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Side-by-side financial comparison of MPLX LP (MPLX) and WEC Energy Group (WEC). Click either name above to swap in a different company.

WEC Energy Group is the larger business by last-quarter revenue ($2.5B vs $2.5B, roughly 1.0× MPLX LP). MPLX LP runs the higher net margin — 49.1% vs 12.5%, a 36.6% gap on every dollar of revenue. On growth, WEC Energy Group posted the faster year-over-year revenue change (11.1% vs 1.4%). Over the past eight quarters, MPLX LP's revenue compounded faster (6.2% CAGR vs -2.7%).

MarkWest Energy Partners, L.P., a subsidiary of MPLX LP, is a natural gas gathering, processing and transportation company master limited partnership of the United States. In 1988, the company was founded in Denver, Colorado and grew to be Colorado's 13th largest company. In 2015 it was acquired by MPLX, itself a subsidiary of Marathon Petroleum.

WEC Energy Group is an American energy company based in Milwaukee, Wisconsin. It provides electricity and natural gas to 4.4 million customers across four states.

MPLX vs WEC — Head-to-Head

Bigger by revenue
WEC
WEC
1.0× larger
WEC
$2.5B
$2.5B
MPLX
Growing faster (revenue YoY)
WEC
WEC
+9.7% gap
WEC
11.1%
1.4%
MPLX
Higher net margin
MPLX
MPLX
36.6% more per $
MPLX
49.1%
12.5%
WEC
Faster 2-yr revenue CAGR
MPLX
MPLX
Annualised
MPLX
6.2%
-2.7%
WEC

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
MPLX
MPLX
WEC
WEC
Revenue
$2.5B
$2.5B
Net Profit
$1.2B
$316.8M
Gross Margin
63.7%
Operating Margin
60.5%
17.9%
Net Margin
49.1%
12.5%
Revenue YoY
1.4%
11.1%
Net Profit YoY
8.5%
-30.1%
EPS (diluted)

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
MPLX
MPLX
WEC
WEC
Q4 25
$2.5B
$2.5B
Q3 25
$2.5B
$2.1B
Q2 25
$2.4B
$2.0B
Q1 25
$2.5B
$3.1B
Q4 24
$2.4B
$2.3B
Q3 24
$2.3B
$1.9B
Q2 24
$2.3B
$1.8B
Q1 24
$2.2B
$2.7B
Net Profit
MPLX
MPLX
WEC
WEC
Q4 25
$1.2B
$316.8M
Q3 25
$1.6B
$270.2M
Q2 25
$1.1B
$243.0M
Q1 25
$1.1B
$725.5M
Q4 24
$1.1B
$453.1M
Q3 24
$1.0B
$238.6M
Q2 24
$1.2B
$210.0M
Q1 24
$1.0B
$622.6M
Gross Margin
MPLX
MPLX
WEC
WEC
Q4 25
63.7%
Q3 25
71.1%
Q2 25
71.6%
Q1 25
63.0%
Q4 24
67.7%
Q3 24
72.1%
Q2 24
73.5%
Q1 24
65.4%
Operating Margin
MPLX
MPLX
WEC
WEC
Q4 25
60.5%
17.9%
Q3 25
73.2%
21.4%
Q2 25
54.9%
20.1%
Q1 25
55.5%
29.8%
Q4 24
55.6%
25.9%
Q3 24
54.4%
20.6%
Q2 24
62.9%
20.6%
Q1 24
57.6%
30.3%
Net Margin
MPLX
MPLX
WEC
WEC
Q4 25
49.1%
12.5%
Q3 25
63.2%
12.8%
Q2 25
44.9%
12.1%
Q1 25
46.2%
23.0%
Q4 24
45.9%
19.8%
Q3 24
44.6%
12.8%
Q2 24
52.6%
11.9%
Q1 24
46.7%
23.2%

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
MPLX
MPLX
WEC
WEC
Cash + ST InvestmentsLiquidity on hand
$2.1B
$27.6M
Total DebtLower is stronger
$24.2B
$20.0B
Stockholders' EquityBook value
$14.1B
Total Assets
$43.0B
$51.5B
Debt / EquityLower = less leverage
1.42×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
MPLX
MPLX
WEC
WEC
Q4 25
$2.1B
$27.6M
Q3 25
$1.8B
$51.1M
Q2 25
$1.4B
$23.0M
Q1 25
$2.5B
$82.2M
Q4 24
$1.5B
$9.8M
Q3 24
$2.4B
$322.5M
Q2 24
$2.5B
$224.0M
Q1 24
$385.0M
$38.9M
Total Debt
MPLX
MPLX
WEC
WEC
Q4 25
$24.2B
$20.0B
Q3 25
$24.1B
Q2 25
$19.7B
Q1 25
$19.7B
Q4 24
$19.3B
$18.9B
Q3 24
$19.3B
$16.9B
Q2 24
$19.2B
$16.9B
Q1 24
$18.8B
$15.4B
Stockholders' Equity
MPLX
MPLX
WEC
WEC
Q4 25
$14.1B
Q3 25
$14.0B
Q2 25
$13.7B
Q1 25
$13.4B
Q4 24
$12.8B
Q3 24
$12.4B
Q2 24
$12.4B
Q1 24
$12.4B
Total Assets
MPLX
MPLX
WEC
WEC
Q4 25
$43.0B
$51.5B
Q3 25
$43.2B
$49.8B
Q2 25
$37.8B
$48.5B
Q1 25
$39.0B
$48.2B
Q4 24
$37.5B
$47.4B
Q3 24
$38.5B
$45.2B
Q2 24
$38.4B
$44.6B
Q1 24
$36.5B
$43.9B
Debt / Equity
MPLX
MPLX
WEC
WEC
Q4 25
1.42×
Q3 25
Q2 25
Q1 25
Q4 24
1.48×
Q3 24
1.36×
Q2 24
1.36×
Q1 24
1.24×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
MPLX
MPLX
WEC
WEC
Operating Cash FlowLast quarter
$1.5B
$424.6M
Free Cash FlowOCF − Capex
$782.0M
FCF MarginFCF / Revenue
31.9%
Capex IntensityCapex / Revenue
29.1%
Cash ConversionOCF / Net Profit
1.24×
1.34×
TTM Free Cash FlowTrailing 4 quarters
$4.1B

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
MPLX
MPLX
WEC
WEC
Q4 25
$1.5B
$424.6M
Q3 25
$1.4B
$938.9M
Q2 25
$1.7B
$853.3M
Q1 25
$1.2B
$1.2B
Q4 24
$1.7B
$581.8M
Q3 24
$1.4B
$729.0M
Q2 24
$1.6B
$1.0B
Q1 24
$1.3B
$863.6M
Free Cash Flow
MPLX
MPLX
WEC
WEC
Q4 25
$782.0M
Q3 25
$905.0M
$-625.7M
Q2 25
$1.4B
$23.9M
Q1 25
$979.0M
$461.5M
Q4 24
$1.4B
Q3 24
$1.1B
$-67.3M
Q2 24
$1.4B
$343.5M
Q1 24
$1.0B
$419.1M
FCF Margin
MPLX
MPLX
WEC
WEC
Q4 25
31.9%
Q3 25
36.8%
-29.7%
Q2 25
60.9%
1.2%
Q1 25
39.8%
14.7%
Q4 24
56.6%
Q3 24
48.4%
-3.6%
Q2 24
60.0%
19.4%
Q1 24
47.7%
15.6%
Capex Intensity
MPLX
MPLX
WEC
WEC
Q4 25
29.1%
Q3 25
21.4%
74.4%
Q2 25
12.8%
41.3%
Q1 25
10.9%
22.3%
Q4 24
12.7%
Q3 24
11.9%
42.7%
Q2 24
9.4%
39.2%
Q1 24
11.7%
16.6%
Cash Conversion
MPLX
MPLX
WEC
WEC
Q4 25
1.24×
1.34×
Q3 25
0.92×
3.47×
Q2 25
1.64×
3.51×
Q1 25
1.10×
1.60×
Q4 24
1.51×
1.28×
Q3 24
1.35×
3.06×
Q2 24
1.32×
4.94×
Q1 24
1.27×
1.39×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

MPLX
MPLX

Services$746.0M30%
Other$675.0M28%
Products$492.0M20%
Nonrelated Party$186.0M8%
Related Party$151.0M6%
Crude Oil And Products Logistics$104.0M4%
Service Other$56.0M2%
Natural Gas And NGL Services$41.0M2%

WEC
WEC

Wisconsin$1.9B73%
Illinois$441.2M17%
Other States$165.1M7%
External Revenues$74.0M3%
Otheroperatingrevenues$8.0M0%

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