Constellation Energyvs.NRG Energy
CEG vs NRG · both in Utilities & power producers, part of the Energy, grid & critical infrastructure value chain: Electricity utilities and large power producers, from nuclear to renewable portfolios.
Constellation Energy is about 4.5× larger than NRG Energy by market cap; year to date, Constellation Energy leads (−15.2% vs −31.8%).
Side by side
| CEG | NRG | |
|---|---|---|
| Market cap | $101B | $22.7B |
| Price | $285.07 | $106.32 |
| Today | −4.8% | −2.1% |
| Return YTD | −15.2% | −31.8% |
| Return 1Y | −16.4% | −33.2% |
| Since July 2, 2026 | +19.2% | −22.2% |
| P/E | 29.1 | 26.7 |
| P/S | 3.2 | 0.7 |
| P/B | 3.2 | 4.7 |
Data as of 2026-10-08 · updates daily after U.S. close
Since July 2, 2026: the change in the closing price from the first session with a close for both companies. Sectivia records these closes itself, starting June 26, 2026.
The two companies
Constellation EnergyCEG
No US company generates more nuclear power. Its carbon-free baseload increasingly goes to data centre operators on long-term contracts, the clearest case being Microsoft's deal to restart Three Mile Island.
Full CEG profile →NRG EnergyNRG
Generation plants on one side, millions of retail electricity and gas customers on the other, plus the Vivint smart-home business. The fleet runs on gas, coal and solar, and it is positioned for the demand growth data centers are driving in Texas and beyond.
Full NRG profile →More CEG & NRG comparisons
Other head-to-heads in the Utilities & power producers segment.