Constellation Energyvs.Exelon
CEG vs EXC · 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 2.1× larger than Exelon by market cap; Exelon trades at the lower P/E (16.9 vs 28.5); year to date, Exelon leads (+1.7% vs −22.6%).
Side by side
| CEG | EXC | |
|---|---|---|
| Market cap | $98.7B | $47B |
| Price | $278.42 | $44.31 |
| Today | +1.8% | −0.1% |
| Return YTD | −22.6% | +1.7% |
| Return 1Y | −11.8% | −1.4% |
| P/E | 28.5 | 16.9 |
| P/S | 3.2 | 1.9 |
| P/B | 3.1 | 1.6 |
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 →ExelonEXC
Distributes electricity and gas to several large US cities, ComEd and PECO among them.
Full EXC profile →More CEG & EXC comparisons
Other head-to-heads in the Utilities & power producers segment.