# AI Power Boom: Constellation vs Vistra

> Which AI energy stock wins the boom?
- Title: AI Power Boom: Constellation vs Vistra · Yahoo Finance
- Summary: Which AI energy stock wins the boom? Vistra's diversified AI power deals and cheaper valuation make it the better bet for the AI electricity boom.
- Keywords: constellation energy, vistra, ai power boom, nuclear power, data centers, power purchasing agreements, ai investment, stock market, business, finance, Power, Boom
- Source: Yahoo Finance — https://finance.yahoo.com/energy/articles/constellation-energy-vs-vistra-2-164500823.html
- Published: 2026-09-16T16:45:00+00:00
- Read time: 1 min
- Topics: constellation energy, vistra, ai power boom, nuclear power, data centers, power purchasing agreements, ai investment, stock market, business, finance
## AI power boom sparks demand
The AI market's rapid expansion has sparked a massive increase in electricity demand, especially among data centers, over the past few years.
## Constellation Energy's growth
Constellation's stock has rallied 137% over three years, trading at 21 times its 2026 earnings outlook of $11.50-$12.50 per share.
## Vistra's growth
Vistra's stock has soared 330% over three years, trading at nine times its 2026 earnings outlook of $6.8-$7.6 billion.
## Constellation's nuclear focus
Constellation operates the country's largest nuclear fleet with 22 GW capacity, serving 80% of the Fortune 100 including top hyperscalers.
## Vistra's natural gas reliance
Vistra relies on natural gas for 62% of its capacity, with coal and renewables driving earnings growth through AI power deals.
## Constellation's growth catalysts
Constellation's growth is fueled by a 20-year PPA with Microsoft to restart Unit 1 at Three Mile Island, scaling PPAs with Meta and Walmart, and integrating Calpine.
## Vistra's growth catalysts
Vistra's growth is driven by massive AI PPAs with Meta and Amazon, a planned takeover of Cogentrix by end of 2026, and Helix Digital Infrastructure for AI data centers.
## Which stock wins?
Vistra is the better buy due to its diversified AI power exposure, greater natural gas reliance, and fundamentally cheaper valuation compared to Constellation.
## Key takeaway

Vistra's diversified AI power deals and cheaper valuation make it the better bet for the AI electricity boom.