Constellation Energy vs. Vistra: Who Leads the AI Power Revenue Race?
Key Points
Constellation Energy shows steadier, stronger revenue growth with consistent year-over-year gains, whereas Vistra's growth is slower and choppier.
The dominant trend in recent quarters reveals that both companies have navigated significant volatility, but Constellation's revenue base is larger.
Can the revenue gap between the two nuclear and natural gas heavyweights narrow? Keep an eye out.
- 10 stocks we like better than Constellation Energy ›
Constellation Energy: Maintaining Steady Upward Momentum in Revenue
Constellation Energy (NASDAQ:CEG) primarily generates revenue by producing and distributing electricity across multiple geographical markets in the U.S., managing a large portfolio of generation assets that includes nuclear, wind, and solar facilities to serve utility distributors, commercial enterprises, and everyday household consumers.
It recently filed regulatory applications to extend the operational life of multiple energy plants and continues to secure long-term power purchase agreements. It reported a net margin of 7% in the quarter ended June 30, 2026.
Vistra: Navigating Recent Year-Over-Year Declines in Revenue
Vistra (NYSE:VST) earns its revenue through a combination of retail electricity supply operations and extensive power generation activities, managing a large fleet of natural gas, nuclear, and battery storage facilities to deliver electricity to residential, commercial, and industrial clients across multiple states.
While launching a joint entity to finance digital infrastructure projects and running community energy assistance programs, it reported an operating margin of around 14% for the quarter ended June 30, 2026.
Why Revenue Trends Matter for Individual Investors
Revenue here refers to the data provider's standardized income-statement revenue line item, and it serves as an essential baseline metric for everyday investors because it reveals the absolute scale of capital flowing into the business prior to any expenses being deducted.
Quarterly Revenue for Constellation Energy and Vistra
| Quarter (Period End) | Constellation Energy Revenue | Vistra Revenue |
|---|---|---|
| Q3 2024 (Sept. 2024) | $6.5 billion | $5.5 billion |
| Q4 2024 (Dec. 2024) | $5.4 billion | $7.4 billion |
| Q1 2025 (March 2025) | $6.8 billion | $5.2 billion |
| Q2 2025 (June 2025) | $6.1 billion | $4.3 billion |
| Q3 2025 (Sept. 2025) | $7.2 billion | $5.0 billion |
| Q4 2025 (Dec. 2025) | $5.5 billion | $2.3 billion |
| Q1 2026 (March 2026) | $11.1 billion | $4.7 billion |
| Q2 2026 (June 2026) | $7.5 billion | $4.0 billion |
Data source: Company filings. Data as of Aug. 12, 2026.
Foolish Take
The demand for nuclear energy is on the rise amid the artificial intelligence (AI) data center boom.
Constellation Energy and Vistra are the two biggest players in U.S. nuclear power, and both are interestingly running the same playbook right now: leaning on nuclear as the crown-jewel asset for the AI data center build-out, while simultaneously bulking up on natural gas to add flexible capacity faster than new nuclear could ever be built. So while Constellation Energy acquired Calpine in early 2026, Vistra is all set to acquire gas plants from Cogentrix Energy.
The Calpine deal explains the big recent jump in Constellation's quarterly revenues. Vistra's revenue, meanwhile, is lumpy as it uses energy derivatives to hedge power prices and books gains and losses on commodity price fluctuations, as the case may be.
Both companies have a large exposure to major wholesale power markets, such as the Electric Reliability Council of Texas (ERCOT) and PJM. Power prices in such markets are driven by supply and demand and therefore offer greater upside potential for the two companies than for traditional utilities.
Constellation is the larger, faster-growing energy company integrating a massive acquisition, while Vistra is the smaller but more capital-return-focused of the two, targeting at least $1 billion in annual share repurchases.
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Neha Chamaria has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Constellation Energy and Vistra. The Motley Fool has a disclosure policy.
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