Biggest changeThe 2023 effective tax rate was 29.0%. 40 Table of Contents Segment Results Operating performance by segment for the years ended December 31, 2024, 2023, and 2022 was as follows (in millions): For the year ended December 31, 2024 Utilities % of Segment Revenue Energy % of Segment Revenue Corporate and non-allocated costs Consolidated % of Consolidated Revenue Revenue $ 2,439.0 — $ 4,032.0 — $ (104.2) (1) $ 6,366.8 — Cost of revenue 2,181.1 89.4% 3,586.7 89.0% (104.2) (1) 5,663.6 89.0% Gross profit 257.9 10.6% 445.3 11.0% — 703.2 11.0% Selling, general, and administrative expenses 118.2 4.8% 150.2 3.7% 114.9 383.3 6.0% Transaction and related costs — — 2.5 2.5 Operating income $ 139.7 5.7% $ 295.1 7.3% $ (117.4) $ 317.4 5.0% (1) Represents intersegment revenue and cost of revenue of $104.2 million in the Utilities segment eliminated in our Consolidated Statements of Income. For the year ended December 31, 2023 Utilities % of Segment Revenue Energy % of Segment Revenue Corporate and non-allocated costs Consolidated % of Consolidated Revenue Revenue $ 2,410.1 — $ 3,346.2 — $ (41.0) (1) $ 5,715.3 — Cost of revenue 2,203.1 91.4% 2,965.7 88.6% (41.0) (1) 5,127.8 89.7% Gross profit 207.0 8.6% 380.5 11.4% — 587.5 10.3% Selling, general, and administrative expenses 117.8 4.9% 132.6 4.0% 78.3 328.7 5.8% Transaction and related costs — — 5.7 5.7 Operating income $ 89.2 3.7% $ 247.9 7.4% $ (84.0) $ 253.1 4.4% (1) Represents intersegment revenue and cost of revenue of $29.9 million in the Utilities segment and $11.1 million in the Energy segment eliminated in our Consolidated Statements of Income. For the year ended December 31, 2022 Utilities % of Segment Revenue Energy % of Segment Revenue Corporate and non-allocated costs Consolidated % of Consolidated Revenue Revenue $ 2,033.7 — $ 2,397.3 — $ (10.4) (1) $ 4,420.6 — Cost of revenue 1,823.0 89.6% 2,151.1 89.7% (10.4) (1) 3,963.7 89.7% Gross profit 210.7 10.4% 246.2 10.3% — 456.9 10.3% Selling, general, and administrative expenses 91.7 4.5% 108.6 4.5% 81.3 281.6 6.4% Transaction and related costs — — 20.1 20.1 Gain on sale and leaseback transaction — — (40.1) (40.1) Operating income $ 119.0 5.9% $ 137.6 5.7% $ (61.3) $ 195.3 4.4% (1) Represents intersegment revenue and cost of revenue of $9.3 million in the Utilities segment and $1.1 million in the Energy segment eliminated in our Consolidated Statements of Income. 41 Table of Contents Utilities Segment 2024 and 2023 Revenue increased by $28.9 million, or 1.2%, during 2024 compared to 2023.
Biggest changeThe legislation did not have a material impact on our income tax expense for the year ended December 31, 2025, nor did it materially change our effective income tax rate for 2025. 39 Table of Contents Segment Results Operating performance by segment for the years ended December 31, 2025, 2024, and 2023 was as follows (in millions): For the year ended December 31, 2025 Utilities % of Segment Revenue Energy % of Segment Revenue Corporate and non-allocated costs Consolidated % of Consolidated Revenue Revenue $ 2,691.7 — $ 5,018.6 — $ (135.4) (1) $ 7,574.9 — Cost of revenue 2,383.0 88.5% 4,514.2 89.9% (135.4) (1) 6,761.8 89.3% Gross profit 308.7 11.5% 504.4 10.1% — 813.1 10.7% Selling, general, and administrative expenses 126.2 4.7% 163.4 3.3% 109.6 399.2 5.3% Transaction and related costs — — 2.4 2.4 Operating income $ 182.5 6.8% $ 341.0 6.8% $ (112.0) $ 411.5 5.4% (1) Represents intersegment revenue and cost of revenue of $135.2 million in the Utilities segment and $0.2 million in the Energy segment eliminated in our Consolidated Statements of Income. For the year ended December 31, 2024 Utilities % of Segment Revenue Energy % of Segment Revenue Corporate and non-allocated costs Consolidated % of Consolidated Revenue Revenue $ 2,439.0 — $ 4,032.0 — $ (104.2) (1) $ 6,366.8 — Cost of revenue 2,181.1 89.4% 3,586.7 89.0% (104.2) (1) 5,663.6 89.0% Gross profit 257.9 10.6% 445.3 11.0% — 703.2 11.0% Selling, general, and administrative expenses 118.2 4.8% 150.2 3.7% 114.9 383.3 6.0% Transaction and related costs — — 2.5 2.5 Operating income $ 139.7 5.7% $ 295.1 7.3% $ (117.4) $ 317.4 5.0% (1) Represents intersegment revenue and cost of revenue of $104.2 million in the Utilities segment eliminated in our Consolidated Statements of Income. 40 Table of Contents For the year ended December 31, 2023 Utilities % of Segment Revenue Energy % of Segment Revenue Corporate and non-allocated costs Consolidated % of Consolidated Revenue Revenue $ 2,410.1 — $ 3,346.2 — $ (41.0) (1) $ 5,715.3 — Cost of revenue 2,203.1 91.4% 2,965.7 88.6% (41.0) (1) 5,127.8 89.7% Gross profit 207.0 8.6% 380.5 11.4% — 587.5 10.3% Selling, general, and administrative expenses 117.8 4.9% 132.6 4.0% 78.3 328.7 5.8% Transaction and related costs — — 5.7 5.7 Operating income $ 89.2 3.7% $ 247.9 7.4% $ (84.0) $ 253.1 4.4% (1) Represents intersegment revenue and cost of revenue of $29.9 million in the Utilities segment and $11.1 million in the Energy segment eliminated in our Consolidated Statements of Income.
The structure of our reportable segments is generally focused on broad end-user markets for our services. The Utilities segment operates throughout the United States and specializes in a range of services, including the installation and maintenance of new and existing natural gas and electric utility distribution and transmission systems, and communications systems. The Energy segment operates throughout the United States and Canada and specializes in a range of services that include engineering, procurement, construction, and maintenance services for entities in the energy, renewable energy and energy storage, renewable fuels, and petroleum and petrochemical industries, as well as state departments of transportation. We have longstanding customer relationships with solar facility developers and utility, refining, petrochemical, communications, midstream, downstream, and engineering companies, as well as power producers and transportation agencies across our core markets.
The structure of our reportable segments is generally focused on broad end-user markets for our services. The Utilities segment operates throughout the United States and specializes in a range of services, including the installation and maintenance of new and existing natural gas and electric utility distribution and transmission systems, and communications systems. The Energy segment operates throughout the United States and Canada and specializes in a range of services that include engineering, procurement, construction, and maintenance services for entities in the energy, renewable energy and energy storage, renewable fuels, and petroleum and petrochemical industries, as well as state departments of transportation. We have longstanding customer relationships with solar facility developers, power producers, gas and electric utilities, refining, petrochemical, communications, midstream, downstream, and engineering companies, as well as transportation agencies across our core markets.
For these contracts, revenue is recognized over time as work is completed because of the continuous transfer of control to the customer (typically using an input measure such as costs incurred to date relative to total estimated costs at completion to measure progress).
For these contracts, revenue is recognized over time as work is completed because of the continuous transfer of control to the customer (typically using an input measure such as costs incurred to date relative to total estimated costs at completion to measure progress).
For certain contracts, where scope is not adequately defined and we can’t reasonably estimate total contract value, revenue is recognized either on an input basis, based on contract costs incurred as defined within the respective contracts, or an output basis based on units completed.
For certain contracts, where scope is not adequately defined and we can’t reasonably estimate total contract value, revenue is recognized either on an input basis, based on contract costs incurred as defined within the respective contracts, or an output basis based on units completed.
In the event of a project cancellation, we are typically reimbursed for all of our costs through a specific date, as well as all reasonable costs associated with demobilizing from the jobsite, but typically we have no contractual right to the total revenue reflected in 48 Table of Contents backlog.
In the event of a project cancellation, we are typically reimbursed for all of our costs through a specific date, as well as all reasonable costs 48 Table of Contents associated with demobilizing from the jobsite, but typically we have no contractual right to the total revenue reflected in backlog.
Our current outlook for our primary end markets is as follows: ● Construction of alternative energy facilities, chemical processing facilities, renewable natural gas facilities, solar power facilities, battery storage — We believe state and federal governments, investors and utilities remain committed to a diversified power generation mix that includes more alternative energy sources.
Our current outlook for our primary end markets is as follows: ● Construction of alternative energy facilities, chemical processing facilities, renewable natural gas facilities, solar power facilities, battery storage — We believe state and federal governments, investors and utilities remain committed to a diversified power generation mix that includes alternative energy sources.
If the carrying amount of a reporting unit is in excess of its fair value, goodwill is considered impaired and an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill of the reporting unit. There were no impairments of goodwill for the years ended December 31, 2024, 2023 and 2022. Income taxes —We account for income taxes under the asset and liability method as set forth in ASC 740, “ Income Taxes ”, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements.
If the carrying amount of a reporting unit is in excess of its fair value, goodwill is considered impaired and an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill of the reporting unit. There were no impairments of goodwill for the years ended December 31, 2025, 2024 and 2023. Income taxes —We account for income taxes under the asset and liability method as set forth in ASC 740, “ Income Taxes ”, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements.
We believe that based on continuing population growth, increased power demand, and the intermittency of renewable power resources, gas powered plants will still be needed, not withstanding some opposition to these traditional generation sources.
We believe that based on continuing population growth, increased power demand, and the intermittency of renewable power resources, gas powered generation will still be needed, not withstanding some opposition to these traditional generation sources.
In July 2024 we renewed the Facility for a two-year term, added Regions Bank to the Facility, and increased the maximum purchase commitment to $150.0 million, at any one time.
In July 2024 we renewed the AR Facility for a two-year term, added Regions Bank to the AR Facility, and increased the maximum purchase commitment to $150.0 million, at any one time.
Management is unable to ascertain the ultimate outcome of other claims and legal proceedings; 37 Table of Contents however, after review and consultation with counsel and taking into consideration relevant insurance coverage and related deductibles/self-insurance retention, management believes that it has meritorious defenses to the claims and believes that the reasonably possible outcome of such claims will not, individually or in the aggregate, have a material adverse effect on our consolidated results of operations, financial condition or cash flows.
Management is unable to ascertain the ultimate outcome of other claims and legal proceedings; however, after review and consultation with counsel and taking into consideration relevant insurance coverage and related deductibles/self-insurance retention, management believes that it has meritorious defenses to the claims and believes that the reasonably possible outcome of such claims will not, individually or in the aggregate, have a material adverse effect on our consolidated results of operations, financial condition or cash flows.
However, high levels of production from the shale formations and increased demand for exporting liquified natural gas (“LNG”) could strain the current pipeline capacity limitations between production and processing locations which would provide opportunities for our Energy segment. ● Inspection, maintenance and replacement of pipeline infrastructure — We believe that regulatory measures around the frequency or stringency of pipeline integrity testing requirements provides growth opportunity for our Energy segment.
However, high levels of production from the shale formations and increased demand for gas-fired power generation and exporting liquified natural gas (“LNG”) could strain the current pipeline capacity limitations between production and processing locations which would provide opportunities for our Energy segment. ● Inspection, maintenance and replacement of pipeline infrastructure — We believe that regulatory measures around the frequency or stringency of pipeline integrity testing requirements provides growth opportunity for our Energy segment.
While the construction of gathering lines within the oil shale formations may remain at lower levels for a period, we believe that over time, the need for pipeline infrastructure for midstream and gas utility companies will result in a continuing need for our services. The continuing changes in the regulatory environment have affected the demand for our services, either by increasing our work, delaying projects, or cancelling projects.
While the construction of gathering lines within the oil shale formations may remain at lower levels for a period, we believe that over time, the need for pipeline infrastructure for midstream and gas utility companies will result in a continuing need for our services. 32 Table of Contents The continuing changes in the regulatory environment have affected the demand for our services, either by increasing our work, delaying projects, or cancelling projects.
Costs to obtain contracts are generally not significant and are expensed in the period incurred. The classification of revenue, gross profit, and operating income for segment reporting purposes can at times require judgment on the part of management. Our segments may perform services across industries or perform joint 30 Table of Contents services for customers in multiple industries.
Costs to obtain contracts are generally not significant and are expensed in the period incurred. The classification of revenue, gross profit, and operating income for segment reporting purposes can at times require judgment on the part of management. Our segments may perform services across industries or perform joint services for customers in multiple industries.
The effect of changes in tax rates on net deferred tax assets or liabilities is recognized as an increase or decrease in net income in the period the tax change is enacted. Deferred tax assets may be reduced by a valuation allowance if, in the judgment of management, it is more likely than not that all or a portion of a deferred tax asset will not be realized.
The effect of changes in tax rates on net deferred tax assets or liabilities is recognized as an increase or decrease in net income in the period the tax change is enacted. 36 Table of Contents Deferred tax assets may be reduced by a valuation allowance if, in the judgment of management, it is more likely than not that all or a portion of a deferred tax asset will not be realized.
To the extent this dynamic continues, we anticipate continued engineering, procurement, and construction opportunities, that will benefit our Energy segment. ● Communications construction opportunities — We believe the federal government remains committed to improving and expanding broadband communications access.
To the extent this trend continues, we anticipate continued engineering, procurement, and construction opportunities, that will benefit our Energy segment. ● Communications construction opportunities — We believe the federal government remains committed to improving and expanding broadband communications access.
Similarly, some utility clients reserve the right to audit costs for significant periods after performance of the work. 35 Table of Contents The timing of when we bill our customers is generally dependent upon agreed-upon contractual terms, milestone billings based on the completion of certain phases of the work, or when services are provided.
Similarly, some utility clients reserve the right to audit costs for significant periods after performance of the work. The timing of when we bill our customers is generally dependent upon agreed-upon contractual terms, milestone billings based on the completion of certain phases of the work, or when services are provided.
In performing these assessments, management relies on various factors, including operating results, business plans, economic projections, anticipated future cash flows, comparable 36 Table of Contents transactions and other market data. There are inherent uncertainties related to these factors and judgment in applying them to the analysis of goodwill for impairment.
In performing these assessments, management relies on various factors, including operating results, business plans, economic projections, anticipated future cash flows, comparable transactions and other market data. There are inherent uncertainties related to these factors and judgment in applying them to the analysis of goodwill for impairment.
In addition, permitting challenges associated with construction of new pipelines may make existing pipeline infrastructure more valuable, motivating owners to extend the 32 Table of Contents useful life of existing pipeline assets through maintenance and integrity initiatives.
In addition, permitting challenges associated with construction of new pipelines may make existing pipeline infrastructure more valuable, motivating owners to extend the useful life of existing pipeline assets through maintenance and integrity initiatives.
For contracts with multiple performance obligations, we allocate the contract’s transaction price to each performance obligation using the observable standalone selling price, if available, or alternatively our best 34 Table of Contents estimate of the standalone selling price of each distinct performance obligation in the contract.
For contracts with multiple performance obligations, we allocate the contract’s transaction price to each performance obligation using the observable standalone selling price, if available, or alternatively our best estimate of the standalone selling price of each distinct performance obligation in the contract.
The effect of a contract modification on the transaction price, and our measure of progress for the performance obligation to which it relates, is recognized as an adjustment to revenue on a cumulative catch-up basis.
The effect of a contract modification on the transaction price, and our measure of progress for the performance obligation to which it 34 Table of Contents relates, is recognized as an adjustment to revenue on a cumulative catch-up basis.
To monitor and manage these market risks, we have established risk management policies and procedures. Our Revolving Credit Facility and Term Loan bear interest at a variable rate which exposes us to interest rate risk. From time to time, we may use certain derivative instruments to hedge our exposure to variable interest rates.
To monitor and manage these market risks, we have established risk management policies and procedures. Our Revolving Credit Facility, Term Loan, and Amended Accounts Receivable Securitization Facility bear interest at a variable rate which exposes us to interest rate risk. From time to time, we may use certain derivative instruments to hedge our exposure to variable interest rates.
We determine the fair value of these assets as of the acquisition date. For current assets and current liabilities of an acquisition, we will evaluate whether the book value is equivalent to fair value due to their short term nature.
We determine the fair value of these assets as of the acquisition date. For current assets and current liabilities of an acquisition, we will 35 Table of Contents evaluate whether the book value is equivalent to fair value due to their short-term nature.
For tax positions not meeting the more likely than not test, no tax benefit is recorded. Based on our results for the year ended December 31, 2024, a one-percentage point increase in our effective tax rate would have resulted in an increase in our income tax expense of approximately $2.5 million. Litigation and contingencies — Litigation and contingencies are included in our consolidated financial statements based on our assessment of the expected outcome of litigation proceedings or the expected resolution of the contingency.
For tax positions not meeting the more likely than not test, no tax benefit is recorded. Based on our results for the year ended December 31, 2025, a one-percentage point increase in our effective tax rate would have resulted in an increase in our income tax expense of approximately $3.8 million. Litigation and contingencies — Litigation and contingencies are included in our consolidated financial statements based on our assessment of the expected outcome of litigation proceedings or the expected resolution of the contingency.
We have experienced increased operating costs and anticipate that elevated levels of cost inflation could persist in 2025.
We have experienced increased operating costs and anticipate that elevated levels of cost inflation could persist in 2026.
See Note 12 — “ Commitments and Contingencies ” of the Notes to Consolidated Financial Statements included in Item 8.
See Note 11 — “ Commitments and Contingencies ” of the Notes to Consolidated Financial Statements included in Item 8.
We may elect to raise additional capital by issuing common stock, convertible notes, term debt or increasing our credit facility as necessary to fund our operations or to fund the acquisition of new businesses. Our cash and cash equivalents totaled $455.8 million at December 31, 2024, compared to $217.8 million at December 31, 2023.
We may elect to raise additional capital by issuing common stock, convertible notes, term debt or increasing our credit facility as necessary to fund our operations or to fund the acquisition of new businesses. Our cash and cash equivalents totaled $535.5 million at December 31, 2025, compared to $455.8 million at December 31, 2024.
We conclude with a discussion of our outlook and backlog. Introduction We are one of the leading providers of infrastructure services operating mainly in the United States and Canada. We provide a wide range of construction, maintenance, replacement, fabrication, and engineering services to a diversified base of customers through our two segments: Utilities and Energy.
We conclude with a discussion of our outlook and backlog. Introduction We are a leading provider of critical infrastructure services operating mainly in the United States and Canada. We provide a wide range of construction, maintenance, replacement, and engineering services to a diversified base of customers through our two segments: Utilities and Energy.
For the years ended December 31, 2024, 2023, and 2022, $4.7 billion, $3.9 billion, and $2.7 billion, respectively of our revenue is derived from contracts where scope is adequately defined, and therefore we can reasonably estimate total contract value.
For the years ended December 31, 2025, 2024, and 2023, $5.6 billion, $4.7 billion, and $3.9 billion, respectively of our revenue is derived from contracts where scope is adequately defined, and therefore we can reasonably estimate total contract value.
As this trend continues, along with the growing demand for power, we are seeing an increase in the construction of new generation facilities powered by renewable energy sources, as well as energy storage systems.
As this trend continues, along with the growing demand for power, we are seeing strong demand for the construction of new generation facilities powered by renewable energy sources, as well as energy storage systems.
Federal and State programs provide critical 31 Table of Contents funding to help construct and improve the infrastructure required to provide sufficient broadband access to areas that have historically had lower access to broadband services.
Federal and State programs provide critical funding to help construct and improve the infrastructure required to provide sufficient broadband access to areas that have historically had lower access to broadband services.
We have no off-balance sheet financing arrangement with VIEs. The following represents transactions, obligations or relationships that could be considered material off-balance sheet arrangements. ● At December 31, 2024, we had letters of credit outstanding of $53.0 million under the terms of our credit agreements.
We have no off-balance sheet financing arrangement with VIEs. The following represents transactions, obligations or relationships that could be considered material off-balance sheet arrangements. ● At December 31, 2025, we had letters of credit outstanding of $10.1 million under the terms of our credit agreements.
For contract revenue recognized over time, the accrued loss provision is adjusted so that the gross profit for the contract remains zero in future periods. At December 31, 2024, we had approximately $220.8 million of unapproved contract modifications included in the aggregate transaction prices.
For contract revenue recognized over time, the accrued loss provision is adjusted so that the gross profit for the contract remains zero in future periods. At December 31, 2025, we had approximately $201.2 million of unapproved contract modifications included in the aggregate transaction prices.
Approximately $206.1 million of the unapproved contract modifications had been recognized as revenue on a cumulative catch-up basis through December 31, 2024. In all forms of contracts, we estimate the collectability of contract amounts at the same time that we estimate project costs.
Approximately $179.5 million of the unapproved contract modifications had been recognized as revenue on a cumulative catch-up basis through December 31, 2025. In all forms of contracts, we estimate the collectability of contract amounts at the same time that we estimate project costs.
Under the Facility, certain of our designated subsidiaries may sell their trade accounts receivable as they are originated to a wholly owned bankruptcy remote Special Purpose Entity created specifically for this purpose. The total outstanding balance of trade accounts receivable that have been sold and derecognized is $75.0 million as of December 31, 2024.
Under the Amended AR Facility, certain of our designated subsidiaries may sell or pledge their trade accounts receivable as they are originated to a wholly owned bankruptcy remote Special Purpose Entity created specifically for this purpose. The total outstanding balance of trade accounts receivable that have been sold and derecognized is $125.0 million as of December 31, 2025.
Our short-term and long-term cash requirements consist primarily of working capital, investments to support revenue growth and maintain our equipment and facilities, general corporate needs, and to service our debt obligations. At December 31, 2024, there were no outstanding borrowings under the Revolving Credit Facility, commercial letters of credit outstanding were $52.3 million, and available borrowing capacity was $272.7 million.
Our short-term and long-term cash requirements consist primarily of working capital, investments to support revenue growth and maintain our equipment and facilities, general corporate needs, and to service our debt obligations. At December 31, 2025, there were no outstanding borrowings under the Revolving Credit Facility, commercial letters of credit outstanding were $9.9 million, and available borrowing capacity was $315.1 million.
In addition, there were no outstanding borrowings under our Canadian credit facilities as of December 31, 2024, commercial letters of credit outstanding were $1.0 million in Canadian dollars and available borrowing capacity was $13.0 million in Canadian dollars. In June 2023, we entered into an Accounts Receivable Facility (the “Facility”) with PNC Bank, National Association (“PNC”) to reduce interest costs and improve cash flows from trade accounts receivable.
In addition, there were no outstanding borrowings under our Canadian credit facilities as of December 31, 2025, commercial letters of credit outstanding were $0.3 million in Canadian dollars and available borrowing capacity was $13.7 million in Canadian dollars. In June 2023, we entered into an Accounts Receivable Securitization Facility (the “AR Facility”) with PNC Bank, National Association to reduce interest costs and improve cash flows from trade accounts receivable.
“ Financial Statements And Supplementary Data ” of this Annual Report on Form 10-K for a discussion of recently issued accounting pronouncements. Results of Operations Consolidated Results Revenue 2024 and 2023 Revenue for the year ended December 31, 2024 increased by $0.7 billion, or 11.4%, compared to 2023.
“ Financial Statements and Supplementary Data ” of this Annual Report on Form 10-K for a discussion of recently issued accounting pronouncements. Results of Operations Consolidated Results Revenue 2025 and 2024 Revenue for the year ended December 31, 2025 increased by $1.2 billion, or 19.0%, compared to 2024.
Management’s estimates are based on the relevant information available at the end of each period.
Management’s estimates 33 Table of Contents are based on the relevant information available at the end of each period.
Based on our variable rate debt outstanding as of December 31, 2024, a 1.0% increase or decrease in interest rates would change annual interest expense by approximately $3.8 million. Seasonality, Cyclicality and Variability Our results of operations are subject to quarterly variations.
As of December 31, 2025, none of our variable rate debt outstanding was economically hedged. Based on our variable rate debt outstanding as of December 31, 2025, a 1.0% increase or decrease in interest rates would change annual interest expense by approximately $4.4 million. Seasonality, Cyclicality and Variability Our results of operations are subject to quarterly variations.
Our Credit Agreement bears interest at variable market rates, and estimated payments are based on the interest rate in effect as of December 31, 2024, including the impact of our interest rate swap. The summary does not include potential obligations under multi-employer pension plans in which some of our employees participate.
Our Credit Agreement and Amended AR Facility bear interest at variable market rates, and estimated payments are based on the interest rate in effect as of December 31, 2025. The summary does not include potential obligations under multi-employer pension plans in which some of our employees participate.
Capital expenditures are expected to total between $90.0 million and $110.0 million for 2025, which includes $60.0 million to $80.0 million for construction equipment. Cash Flows Cash flows during the years ended December 31, 2024, 2023 and 2022 are summarized as follows (in millions): 2024 2023 2022 Change in cash: Net cash provided by operating activities $ 508.3 $ 198.6 $ 83.3 Net cash used in investing activities (27.2) (30.0) (481.9) Net cash (used in) provided by financing activities (244.4) (205.3) 452.0 Effect of exchange rate changes 1.2 1.3 (0.1) Net change in cash, cash equivalents and restricted cash $ 237.9 $ (35.4) $ 53.3 43 Table of Contents Operating Activities The sources and uses of cash flow associated with operating activities for the years ended December 31, 2024, 2023 and 2022 were as follows (in millions): Year Ended December 31, 2024 2023 2022 Operating Activities: Net income $ 180.9 $ 126.1 $ 133.0 Depreciation and amortization 95.5 107.0 99.2 Gain on sale and leaseback transaction — — (40.1) Changes in assets and liabilities 255.9 (0.1) (79.0) Gain on sale of property and equipment (44.8) (48.1) (31.9) Other 20.8 13.6 2.1 Net cash provided by operating activities $ 508.3 $ 198.5 $ 83.3 2024 and 2023 Net cash provided by operating activities for 2024 was $508.3 million, an increase of $309.7 million compared to 2023.
Capital expenditures are expected to total between $120.0 million and $140.0 million for 2026, which includes $90.0 million to $110.0 million for construction equipment. 43 Table of Contents Cash Flows Cash flows during the years ended December 31, 2025, 2024 and 2023 are summarized as follows (in millions): 2025 2024 2023 Change in cash: Net cash provided by operating activities $ 470.4 $ 508.3 $ 198.5 Net cash used in investing activities (93.9) (27.2) (30.0) Net cash used in financing activities (296.3) (244.4) (205.3) Effect of exchange rate changes (0.3) 1.2 1.3 Net change in cash, cash equivalents and restricted cash $ 79.9 $ 237.9 $ (35.5) Operating Activities The sources and uses of cash flow associated with operating activities for the years ended December 31, 2025, 2024 and 2023 were as follows (in millions): Year Ended December 31, 2025 2024 2023 Operating Activities: Net income $ 274.9 $ 180.9 $ 126.1 Depreciation and amortization 91.9 95.5 107.0 Changes in assets and liabilities 102.5 255.9 (0.1) Gain on sale of property and equipment (21.7) (44.8) (48.1) Other 22.8 20.8 13.6 Net cash provided by operating activities $ 470.4 $ 508.3 $ 198.5 2025 and 2024 Net cash provided by operating activities for 2025 was $470.4 million, a decrease of $37.9 million compared to 2024.
Our national position in this market allows for scalable coverage across the industry. Electric distribution expansion and resiliency initiatives with clients in our key markets has been, and will continue to be, a strong opportunity for us as we see utilities customers continue to invest in grid reliability.
Electric distribution expansion and resiliency initiatives with clients in our key markets has been, and will continue to be, a strong opportunity for us as we see utilities customers continue to invest in grid reliability.
At December 31, 2024, we had bid and payment/performance bonds issued and outstanding totaling approximately $8.1 billion. The remaining performance obligation on those bonded projects totaled approximately $3.0 billion at December 31, 2024.
At December 31, 2025, we had bid and payment/performance bonds issued and outstanding totaling approximately $8.7 billion. The remaining performance obligation on those bonded projects totaled approximately $2.4 billion at December 31, 2025.
The increase was primarily driven by an increase in pre-tax profits subject to tax. The 2024 effective tax rate was 29.0%. Our provision for income taxes increased $25.3 million to $51.5 million for 2023 compared to 2022.
The increase was primarily driven by an increase in pre-tax profits subject to tax. Our provision for income taxes increased $22.5 million to $74.0 million for 2024 compared to 2023.
We estimate MSA Backlog based on historical trends, anticipated seasonal impacts and estimates of customer demand based on information from our customers. Fixed and MSA Backlog by reporting segment for the periods ending December 31, 2024 and 2023 were as follows (in millions): December 31, 2024 December 31, 2023 Next 12 Months Total Next 12 Months Total Utilities Fixed Backlog $ 71.1 $ 71.1 $ 96.3 $ 96.3 MSA Backlog 1,822.6 5,449.8 1,776.5 5,093.6 Backlog $ 1,893.7 $ 5,520.9 $ 1,872.8 $ 5,189.9 Energy Fixed Backlog $ 3,160.6 $ 6,023.7 $ 2,599.0 $ 5,102.6 MSA Backlog 142.7 320.7 308.2 602.4 Backlog $ 3,303.3 $ 6,344.4 $ 2,907.2 $ 5,705.0 Total Fixed Backlog $ 3,231.7 $ 6,094.8 $ 2,695.3 $ 5,198.9 MSA Backlog 1,965.3 5,770.5 2,084.7 5,696.0 Backlog $ 5,197.0 $ 11,865.3 $ 4,780.0 $ 10,894.9 Backlog should not be considered a comprehensive indicator of future revenue, as a percentage of our revenue is derived from projects that are not part of a backlog calculation.
We estimate MSA Backlog based on historical trends, anticipated seasonal impacts and estimates of customer demand based on information from our customers. Fixed and MSA Backlog by reporting segment for the periods ending December 31, 2025 and 2024 were as follows (in millions): December 31, 2025 December 31, 2024 Next 12 Months Total Next 12 Months Total Utilities Fixed Backlog $ 96.1 $ 96.1 $ 71.1 $ 71.1 MSA Backlog 1,904.8 6,327.3 1,822.6 5,449.8 Backlog $ 2,000.9 $ 6,423.4 $ 1,893.7 $ 5,520.9 Energy Fixed Backlog $ 3,081.7 $ 4,889.8 $ 3,160.6 $ 6,023.7 MSA Backlog 208.8 632.1 142.7 320.7 Backlog $ 3,290.5 $ 5,521.9 $ 3,303.3 $ 6,344.4 Total Fixed Backlog $ 3,177.8 $ 4,985.9 $ 3,231.7 $ 6,094.8 MSA Backlog 2,113.6 6,959.4 1,965.3 5,770.5 Backlog $ 5,291.4 $ 11,945.3 $ 5,197.0 $ 11,865.3 Backlog should not be considered a comprehensive indicator of future revenue, as a percentage of our revenue is derived from projects that are not part of a backlog calculation.
The extension of investment incentives and strong support of U.S. manufacturing has attracted a significant amount of capital to finance renewable projects as well as to enhance the supply chain needed to meet increasing demand. Other trends we are seeing are major investments in industrial gases and agricultural chemicals.
The extension of investment incentives and strong support of U.S. manufacturing has attracted a significant amount of capital to finance renewable projects as well as to enhance the supply chain needed to meet increasing demand.
The decrease of $12.9 million was due primarily to lower average debt balances and lower average interest rates. Interest expense, net for the year ended December 31, 2023 was $78.2 million compared to $39.2 million for the year ended December 31, 2022.
The decrease of $36.6 million was due to lower average debt balances and lower average interest rates. Interest expense, net for the year ended December 31, 2024 was $65.3 million compared to $78.2 million for the year ended December 31, 2023.
SG&A expense as a percentage of revenue for the year ended December 31, 2023 decreased to 5.8% compared to 6.4% for the year ended December 31, 2022, primarily due to increased revenue. Transaction and related costs 2024 and 2023 Transaction and related costs for the year ended December 31, 2024 were $2.4 million, a decrease of $3.2 million or 57.0% compared to 2023 primarily related to a decrease in integration costs for the PLH acquisition. 2023 and 2022 Transaction and related costs for the year ended December 31, 2023 were $5.7 million, a decrease of $14.4 million or 71.7% compared to 2022.
SG&A expense as a percentage of revenue for the year ended December 31, 2024 increased slightly to 6.0% compared to 5.8% for the year ended December 31, 2023. Transaction and related costs 2025 and 2024 Transaction and related costs for the year ended December 31, 2025 was $2.4 million, a decrease of $0.1 million or 4.0% compared to 2024. 2024 and 2023 Transaction and related costs for the year ended December 31, 2024, were $2.5 million, a decrease of $3.2 million or 56.1% compared to 2023 primarily related to a decrease in integration costs for the PLH Group, Inc.
There were no such comparable transactions for the years ended December 31, 2024 and 2023. Other income and expense Non-operating income and expense items for the years ended December 31, 2024, 2023 and 2022 were as follows (in millions): Year Ended December 31, 2024 2023 2022 Foreign exchange gain (loss), net $ 2.7 $ 1.2 $ 1.1 Other income, net 0.1 1.6 2.1 Interest expense, net (65.3) (78.2) (39.2) Total other expense $ (62.5) $ (75.4) $ (36.0) Interest expense, net for the year ended December 31, 2024 was $65.3 million compared to $78.2 million for the year ended December 31, 2023.
(“PLH”) acquisition. 38 Table of Contents Other income and expense Non-operating income and expense items for the years ended December 31, 2025, 2024 and 2023 were as follows (in millions): Year Ended December 31, 2025 2024 2023 Foreign exchange (loss) gain, net $ (0.1) $ 2.7 $ 1.1 Other income, net 1.3 0.1 1.6 Interest expense, net (28.7) (65.3) (78.2) Total other expense $ (27.5) $ (62.5) $ (75.5) Interest expense, net for the year ended December 31, 2025, was $28.7 million compared to $65.3 million for the year ended December 31, 2024.
The change year-over-year was primarily due to improvement in the impact from the changes in assets and liabilities and an increase in net income. The significant components of the $255.9 million change in assets and liabilities for the year ended December 31, 2024 are summarized as follows: ● Contract liabilities increased $251.2 million, primarily due to higher deferred revenue from favorable billing terms on certain new projects. ● Accrued expenses and accounts payable increased $77.8 million, primarily due to revenue growth and the timing of payments to our vendors. ● Contract assets decreased by $62.7 million from December 31, 2023 primarily due to the timing of billing our customers; and ● Accounts receivable increased $167.6 million from December 31, 2023, primarily due to increased revenue and the timing of collecting from our customers. 2023 and 2022 Net cash provided by operating activities for 2023 was $198.6 million, an increase of $115.3 million compared to 2022.
The change year-over-year was primarily due to improvement in the impact from the changes in assets and liabilities and an increase in net income. The significant components of the $255.9 million change in assets and liabilities for the year ended December 31, 2024 are summarized as follows: 44 Table of Contents ● Contract liabilities increased $251.2 million, primarily due to higher deferred revenue from favorable billing terms on certain new projects. ● Accrued expenses and accounts payable increased $77.8 million, primarily due to revenue growth and the timing of payments to our vendors. ● Contract assets decreased by $62.7 million from December 31, 2023 primarily due to the timing of billing our customers; and ● Accounts receivable increased $167.6 million from December 31, 2023, primarily due to increased revenue and the timing of collecting from our customers. Investing activities Net cash used in investing activities was $93.9 million, $27.2 million, and $30.0 million in the years ended December 31, 2025, 2024 and 2023, respectively. We purchased property and equipment for $129.9 million, $126.5 million and $103.0 million in the years ended December 31, 2025, 2024 and 2023 respectively, principally for our construction activities and investments in facilities.
We received proceeds from the sale of assets of $99.3 million, $63.7 million and $41.3 million for 2024, 2023 and 2022, respectively. During 2023, we received $9.3 million from a net working capital true-up related to the PLH acquisition. During 2022, we used $478.4 million for acquisitions, primarily for the acquisitions of PLH and B Comm. Financing activities Financing activities used cash of $244.4 million in 2024, which was primarily due to the following: ● Payment of long-term debt of $224.5 million including $150.0 million of additional principal payments on our term loan; ● Dividend payments to our stockholders of $12.9 million; and ● Payments related to tax withholding for stock-based compensation of $7.5 million. Financing activities used cash of $205.3 million in 2023, which was primarily due to the following: ● Net payments on our revolving credit facilities of $100.0 million; ● Payment of long-term debt of $97.0 million; and ● Dividend payments to our stockholders of $12.8 million. Financing activities provided cash of $452.0 million in 2022, which was primarily due to the following: ● Proceeds from the entry into an amended and upsized term loan of $432.9 million, net of debt issuance costs paid; ● Net borrowings on our credit facilities of $100.0 million; ● Proceeds from the issuance of debt secured by our equipment of $30.0 million; ● Payment of long-term debt of $86.8 million; and ● Dividend payments to our stockholders of $12.8 million. 45 Table of Contents Debt Activities Credit Agreement On August 1, 2022, we entered into the Third Amended and Restated Credit Agreement (the “Credit Agreement”) with CIBC Bank USA, as administrative agent (the “Administrative Agent”) and co-lead arranger, and the financial parties thereto (collectively, the “Lenders”) that increased the existing term loan by $439.5 million to an aggregate principal amount of $945.0 million (as amended, the “Term Loan”).
We received proceeds from the sale of assets of $32.5 million, $99.3 million and $63.7 million for the years ended December 31, 2025, 2024 and 2023, respectively. During 2023, we received $9.3 million from a net working capital true-up related to the PLH acquisition. Financing activities Financing activities used cash of $296.3 million in 2025, which was primarily due to the following: ● Payment on long-term debt of $329.3 million, including $250.0 million of additional principal payments on our term loan; ● Dividend payments to our stockholders of $17.3 million; ● Payments related to tax withholding for stock-based compensation of $11.8 million; and ● Borrowings on our Amended AR Facility of $62.5 million. Financing activities used cash of $244.4 million in 2024, which was primarily due to the following: ● Payment of long-term debt of $224.5 million including $150.0 million of additional principal payments on our term loan; ● Dividend payments to our stockholders of $12.9 million; and ● Payments related to tax withholding for stock-based compensation of $7.5 million. Financing activities used cash of $205.3 million in 2023, which was primarily due to the following: ● Net payments on our revolving credit facilities of $100.0 million; ● Payment of long-term debt of $97.0 million; and ● Dividend payments to our stockholders of $12.8 million. 45 Table of Contents Debt Activities Credit Agreement On August 1, 2022, we entered into the Third Amended and Restated Credit Agreement (the “Credit Agreement”) with CIBC Bank USA, as administrative agent (the “Administrative Agent”) and co-lead arranger, and the financial parties thereto (collectively, the “Lenders”), which increased our term loan to an aggregate principal amount of $945.0 million (the “Term Loan”) and increased our revolving credit facility to $325.0 million (the “Revolving Credit Facility”), under which the Lenders agreed to make loans on a revolving basis from time to time and to issue letters of credit for up to the $325.0 million committed amount.
As 33 Table of Contents a result, we usually experience higher revenue and earnings in the second, third and fourth quarters of the year as compared to the first quarter. Our project values range in size from several hundred dollars to several hundred million dollars.
As a result, we usually experience higher revenue and earnings in the second, third and fourth quarters of the year as compared to the first quarter. Our project values range in size from several hundred dollars to several hundred million dollars. The bulk of our work is comprised of project sizes that average less than $3.0 million.
Available capacity at December 31, 2024 was $13.0 million in Canadian dollars. 46 Table of Contents Contractual Obligations As of December 31, 2024, we had $739.5 million of outstanding long-term debt, and there were no short-term borrowings. A summary of contractual obligations as of December 31, 2024 is as follows (in millions): Total 1 Year 2 - 3 Years 4 - 5 Years After 5 Years Long-term debt $ 739.5 $ 74.6 $ 648.9 $ 9.4 $ 6.6 Interest on long-term debt (1) 102.3 40.4 60.3 1.5 0.1 Operating leases 514.1 145.3 246.4 107.6 14.8 $ 1,355.9 $ 260.3 $ 955.6 $ 118.5 $ 21.5 Letters of credit $ 53.0 $ 53.0 $ — $ — $ — (1) The interest amount represents interest payments for our fixed rate debt assuming that principal payments are made as originally scheduled.
Available capacity at December 31, 2025, was $13.7 million in Canadian dollars. 46 Table of Contents Contractual Obligations As of December 31, 2025, we had $472.7 million of outstanding long-term debt, and there were no short-term borrowings. A summary of contractual obligations as of December 31, 2025 is as follows (in millions): Total 1 Year 2 - 3 Years 4 - 5 Years After 5 Years Long-term debt $ 472.7 $ 60.9 $ 404.6 $ 0.7 $ 6.5 Interest on long-term debt (1) 36.7 22.6 13.6 0.5 — Operating leases 530.5 178.2 263.7 78.6 10.0 $ 1,039.9 $ 261.6 $ 681.9 $ 79.8 $ 16.5 Letters of credit $ 10.1 $ 10.1 $ — $ — $ — (1) The interest amount represents interest payments for our fixed rate debt assuming that principal payments are made as originally scheduled.
Our business may be affected by declines, or delays in new projects, or by client project schedules. Because of the cyclical nature of some of our business, the financial results for any period may fluctuate from prior periods, and our financial condition and operating results may vary from quarter to quarter.
Because of the cyclical nature of some of our business, the financial results for any period may fluctuate from prior periods, and our financial condition and operating results may vary from quarter to quarter.
Gross profit as a percentage of revenue increased to 11.0% compared to 10.3% for the same period in 2023, primarily driven by improved margins in our Utilities segment. 2023 and 2022 For the year ended December 31, 2023, gross profit increased by $130.6 million, or 28.6%, compared to 2022.
Gross profit as a percentage of revenue decreased to 10.7% compared to 11.0% for the same period in 2024, primarily driven by lower margins in our Energy segment, partially offset by higher margins in our Utilities segment. 2024 and 2023 For the year ended December 31, 2024, gross profit increased by $115.8 million, or 19.7%, compared to 2023.
The increase was primarily due to an increase in revenue.
The increase was primarily due to an increase in revenue in both segments and improved margins.
Gross profit as a percentage of revenue remained consistent at 10.3% compared to the same period in 2022. Selling, general and administrative expenses SG&A expenses consist primarily of compensation and benefits to executive, management level and administrative employees, marketing and communications, professional fees, rent for facilities and utilities. 2024 and 2023 SG&A expenses were $383.4 million for the year ended December 31, 2024, an increase of $54.6 million, or 16.6% compared to 2023, primarily due to increased people costs to support revenue growth as well as higher technology 38 Table of Contents costs associated with ongoing initiatives.
Gross profit as a percentage of revenue increased to 11.0% compared to 10.3% for the same period in 2023, primarily driven by improved margins in our Utilities segment. Selling, general and administrative expenses SG&A expenses consist primarily of compensation and benefits to executive, management level and administrative employees, marketing and communications, professional fees, rent for facilities and utilities. 2025 and 2024 SG&A expenses were $399.2 million for the year ended December 31, 2025, an increase of $15.9 million, or 4.1% compared to 2024, primarily due to increased people costs to support revenue growth and investments in technology.
The interest rate swap matured on January 31, 2025. Canadian Credit Facilities We have credit facilities totaling $14.0 million in Canadian dollars for the purposes of issuing commercial letters of credit and providing funding for working capital. At December 31, 2024, commercial letters of credit outstanding were $1.0 million in Canadian dollars and there were no outstanding borrowings.
We were in compliance with the covenants for the Credit Agreement at December 31, 2025. Canadian Credit Facilities We have credit facilities totaling $14.0 million in Canadian dollars for the purposes of issuing commercial letters of credit and providing funding for working capital.
In addition, we recorded a loss on extinguishment of debt during the third quarter of 2022 of $0.8 million related to the Credit Agreement. The principal amount of all loans under the Credit Agreement will bear interest at either: (i) the Secured Overnight Financing Rate plus an applicable margin as specified in the Credit Agreement (based on our net senior debt to earnings before interest, taxes, depreciation and amortization (“EBITDA”) ratio as defined in the Credit Agreement), or (ii) the Base Rate (which is the greater of (a) the Federal Funds Rate plus 0.50% or (b) the prime rate as announced by the Administrative Agent) plus an applicable margin as specified in the Credit Agreement.
There were no outstanding borrowings under the Revolving Credit Facility, and available borrowing capacity was $315.1 million as of December 31, 2025. Under the Credit Agreement, we must make quarterly principal payments on the Term Loan in an amount equal to approximately $11.8 million, with the balance due on August 1, 2027. The principal amount of all loans under the Credit Agreement will bear interest at either: (i) the Secured Overnight Financing Rate plus an applicable margin as specified in the Credit Agreement (based on our net senior debt to earnings before interest, taxes, depreciation and amortization (“EBITDA”) ratio as defined in the Credit Agreement), or (ii) the Base Rate (which is the greater of (a) the Federal Funds Rate plus 0.50% or (b) the prime rate as announced by the Administrative Agent) plus an applicable margin as specified in the Credit Agreement.
The increase was primarily due to growth in our Energy segment. 2023 and 2022 Revenue for the year ended December 31, 2023 increased by $1.3 billion, or 29.3%, compared to 2022.
The increase was due to growth in both our Energy and Utilities segments. 2024 and 2023 Revenue for the year ended December 31, 2024 increased by $0.7 billion, or 11.4%, compared to 2023.
In 2024, we spent approximately $126.6 million for capital expenditures, which included $81.9 million on our facilities and $36.6 million for construction equipment.
In 2025, we spent approximately $129.9 million for capital expenditures, which included $75.8 million for construction equipment and $35.3 million on our facilities.
As of December 31, 2024, we had $75.0 million in available capacity under the Facility. In order to maintain sufficient liquidity, we evaluate our working capital requirements on a regular basis.
In addition, the total amount of trade accounts receivable that have been pledged is $62.5 million as of December 31, 2025. As of December 31, 2025, we had $62.5 million available capacity under the Amended AR Facility. In order to maintain sufficient liquidity, we evaluate our working capital requirements on a regular basis.
We present two measures of backlog; one that includes Fixed Backlog and MSA Backlog for the next twelve months, and total backlog that includes all Fixed Backlog and MSA Backlog to the end of the MSA agreement. We do not consider renewals when estimating MSA Backlog.
We present two measures of backlog; one that includes Fixed Backlog and MSA Backlog for the next twelve months, and total backlog that includes all Fixed Backlog and MSA Backlog to the end of the MSA agreement. In addition, many of our MSAs are subject to renewal, and these potential renewals can be considered in estimating MSA Backlog.
The increase of $39.0 million was due primarily to higher average debt balances from the borrowings related to the PLH acquisition and a higher average interest rate. 39 Table of Contents The weighted average interest rate on total debt outstanding at December 31, 2024, 2023 and 2022 was 5.6%, 6.8% and 6.2%, respectively. Provision for income taxes Our provision for income taxes increased $22.5 million to $74.0 million for 2024 compared to 2023.
The decrease of $12.9 million was due to lower average debt balances and lower average interest rates. The weighted average interest rate on total debt outstanding at December 31, 2025, 2024 and 2023 was 5.0%, 5.6% and 6.8%, respectively. Provision for income taxes Our provision for income taxes increased $35.1 million to $109.1 million for 2025 compared to 2024.
We expect these opportunities, as well as ongoing spending by communications and technology companies, to benefit our Utilities segment. ● Power Delivery — We are experiencing strong tailwinds in our power delivery business as the industry continues to invest in grid resiliency, modernization, renewable generation integration, and increased electrification of certain industries.
We expect these opportunities, as well as ongoing spending by communications and technology companies, to benefit our Utilities segment. ● Power Delivery, inspection, maintenance, and replacement of electrical utility infrastructure — We are experiencing strong tailwinds in our power delivery business due to increased demand for electricity in the United States.
The increase was primarily due to growth in both our Energy and Utilities segments, and the acquisitions of PLH and B Comm in 2022. Gross Profit 2024 and 2023 For the year ended December 31, 2024, gross profit increased by $115.8 million, or 19.7%, compared to 2023. The increase was primarily due to an increase in revenue.
The increase was primarily due to growth in our Energy segment. 37 Table of Contents Gross Profit 2025 and 2024 For the year ended December 31, 2025, gross profit increased by $109.9 million, or 15.6%, compared to 2024. The increase was primarily due to an increase in revenue in both segments, partially offset by lower margins.
The bulk of our work is comprised of project sizes that average less than $3.0 million. We also perform construction projects which tend not to be seasonal, but can fluctuate from year to year based on customer timing, project duration, weather, and general economic conditions.
We also perform construction projects which tend not to be seasonal, but can fluctuate from year to year based on customer timing, project duration, weather, and general economic conditions. Our business may be affected by declines, or delays in new projects, or by client project schedules.
Gross profit as a percentage of revenue decreased to 8.6% in 2023 compared to 10.4% in 2022 primarily due to productivity issues on some legacy PLH projects, higher costs associated with a communication project in 2023, and a shift in revenue mix in 2023. Energy Segment 2024 and 2023 Revenue increased by $685.8 million, or 20.5%, during 2024 compared to 2023, primarily due to increased renewable energy and industrial activity, partially offset by decreased activity in our pipeline market. Operating income increased by $47.2 million, or 19.0% during 2024 compared to 2023, due to strong revenue growth.
In addition, we experienced increased costs in 2025 on certain renewables projects due in part to more challenging soil conditions than anticipated and unfavorable weather conditions. 2024 and 2023 Revenue increased by $685.8 million, or 20.5%, during 2024 compared to 2023, primarily due to increased renewable energy and industrial activity, partially offset by decreased activity in our pipeline market. Operating income increased by $47.2 million, or 19.0% during 2024 compared to 2023, due to strong revenue growth.
In addition, the Credit Agreement includes restrictions on investments, change of control provisions and provisions in the event we dispose of more than 20% of our total assets. We were in compliance with the covenants for the Credit Agreement at December 31, 2024. On January 31, 2023, we entered into an interest rate swap agreement to manage our exposure to the fluctuations in variable interest rates.
In addition, the Credit Agreement includes restrictions on investments, change of control provisions and provisions in the event we dispose of more than 20% of our total assets.
To determine reportable segment gross profit and operating income, certain allocations, including allocations of shared and indirect costs, such as facility costs, equipment costs, selling, general, and administrative expenses (“SG&A”) and indirect operating expenses were made. Acquisition of PLH On August 1, 2022, we acquired PLH Group, Inc.
To determine reportable segment gross profit and operating income, certain 30 Table of Contents allocations, including allocations of shared and indirect costs, such as facility costs, equipment costs, selling, general, and administrative expenses (“SG&A”) and indirect operating expenses were made. Business Environment We believe there are growth opportunities across the industries we serve and we continue to have a positive long-term outlook.
In addition, we had strong performance in our power delivery market and the increased benefit of higher margin storm work in 2024. 2023 and 2022 Revenue increased by $376.4 million, or 18.5%, during 2023 compared to 2022.
In addition, we had strong performance in our power delivery market and the increased benefit of higher margin storm work in 2024. Energy Segment 2025 and 2024 Revenue increased by $986.6 million, or 24.5%, during 2025 compared to 2024, primarily due to increased renewable energy and industrial activity. 41 Table of Contents Operating income increased by $45.9 million, or 15.6% during 2025 compared to 2024, primarily due to strong revenue growth, partially offset by lower gross margins.
SG&A expense as a percentage of revenue for the year ended December 31, 2024 increased slightly to 6.0% compared to 5.8% for the year ended December 31, 2023. 2023 and 2022 SG&A expenses were $328.7 million for the year ended December 31, 2023, an increase of $47.2 million, or 16.7% compared to 2022, primarily due to higher incentive compensation costs associated with improved operational performance and increases in headcount from the acquisitions of PLH and B Comm.
SG&A expense as a percentage of revenue for the year ended December 31, 2025 decreased to 5.3% compared to 6.0% for the year ended December 31, 2024 as we continue to improve leverage of our administrative cost base. 2024 and 2023 SG&A expenses were $383.4 million for the year ended December 31, 2024, an increase of $54.6 million, or 16.6% compared to 2023, primarily due to increased people costs to support revenue growth as well as higher technology costs associated with ongoing initiatives.
Gross profit as a percentage of revenue increased to 11.4% in 2023 compared to 10.3% in 2022, primarily due to significant growth in higher margin renewable energy work, strong performance on a pipeline project in the mid-Atlantic in 2023, higher costs on a separate pipeline project in the mid-Atlantic from unfavorable weather conditions experienced in 2022 and higher relative carrying costs for equipment and personnel in 2022 caused by lower than anticipated pipeline volumes. 42 Table of Contents Liquidity and Capital Resources Cash Needs Liquidity represents our ability to pay our liabilities when they become due, fund business operations, and meet our contractual obligations and execute our business plan.
These amounts were partially offset by growth in higher margin renewable energy work and strong performance by our industrial group in 2024. 42 Table of Contents Liquidity and Capital Resources Cash Needs Liquidity represents our ability to pay our liabilities when they become due, fund business operations, and meet our contractual obligations and execute our business plan.
We also expect that ongoing gas utility repair and maintenance opportunities will continue. ● Construction of natural gas-fired power plants and industrial plants — We expect continued construction opportunities for both baseload and peak shaving power plants; however, we are aware that environmental concerns over gas fired power plants may impact the timing and location of near-term construction opportunities in certain states.
We also expect that gas utility repair and maintenance opportunities will continue. 31 Table of Contents ● Construction of natural gas-fired power plants and industrial plants — We expect strong demand for baseload and peak shaving power plants, as well as behind the meter generation for data centers.
The increase is primarily due to the acquisitions of PLH and B Comm in 2022 and increased activity in our power delivery and communications markets. Operating income decreased $29.8 million, or 25.0%, during 2023 compared to 2022. The decrease is primarily due to a decrease in gross profit, partially offset by growth in revenue.
Utilities Segment 2025 and 2024 Revenue increased by $252.7 million, or 10.4%, during 2025 compared to 2024 primarily due to increased activity in our gas operations, power delivery and communications markets. Operating income increased $42.8 million, or 30.6%, during 2025 compared to 2024 due to revenue growth and improved gross margins.
The change year-over-year was primarily due to improvement in the impact from the changes in assets and liabilities and the inclusion of $40.1 million of gain on a sale and leaseback transaction in 2022 net income. The significant components of the $0.1 million change in assets and liabilities for the year ended December 31, 2023 are summarized as follows: ● Contract assets increased by $229.8 million from December 31, 2022 primarily due to significant revenue growth in 2023; ● Accounts receivable increased $16.9 million from December 31, 2022, which is net of the $75.0 million we received from the Accounts Receivable Securitization Facility; ● Accounts payable increased $93.4 million from December 31, 2022 primarily due to increased revenue and the timing of payments to our vendors; ● Contract liabilities increased $84.7 million, primarily due to higher deferred revenue; and 44 Table of Contents ● Other current assets decreased by $45.6 million primarily due to an income tax refund and the timing of prepaid material purchases. Investing activities Net cash used in investing activities was $27.2 million, $30.0 million, and $481.9 million in the years ended December 31, 2024, 2023 and 2022, respectively. We received net proceeds of $49.9 million from a sale and leaseback transaction of land and buildings during the year ended December 31, 2022. We purchased property and equipment for $126.6 million, $103.0 million and $94.7 million in the years ended December 31, 2024, 2023 and 2022 respectively, principally for our construction activities and facilities investment.
The change year-over-year was primarily due to the impact from the changes in assets and liabilities offset by an increase in net income. The significant components of the $102.5 million change in assets and liabilities for the year ended December 31, 2025 are summarized as follows: ● Accounts payable and accrued liabilities increased by $148.9 million primarily due to revenue growth and the timing of our payments to vendors; ● Accounts receivable decreased by $111.3 million, primarily due to the timing of collecting from our customers; and ● Contract assets increased by $162.2 million, primarily due to increased revenue and the timing of billing our customers. 2024 and 2023 Net cash provided by operating activities for 2024 was $508.3 million, an increase of $309.8 million compared to 2023.