Constellation Energyvs.Southern Company
CEG vs SO · 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 and Southern Company are similar in size by market cap; Southern Company trades at the lower P/E (22.9 vs 28.5); year to date, Southern Company leads (+3.3% vs −22.6%).
Side by side
| CEG | SO | |
|---|---|---|
| Market cap | $98.7B | $107B |
| Price | $278.42 | $89.97 |
| Today | +1.8% | −0.1% |
| Return YTD | −22.6% | +3.3% |
| Return 1Y | −11.8% | −4.6% |
| P/E | 28.5 | 22.9 |
| P/S | 3.2 | 3.7 |
| P/B | 3.1 | 2.7 |
Data as of 2026-08-26 · updates daily after U.S. close
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 →Southern CompanySO
Vogtle is adding nuclear output to what is already one of the biggest US electric and gas utilities.
Full SO profile →More CEG & SO comparisons
Other head-to-heads in the Utilities & power producers segment.