Constellation Energyvs.Talen Energy
CEG vs TLN · 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 5.9× larger than Talen Energy by market cap; year to date, Talen Energy leads (−4.2% vs −19.3%).
Side by side
| CEG | TLN | |
|---|---|---|
| Market cap | $106B | $17.9B |
| Price | $298.07 | $378.57 |
| Today | +4.6% | +5.4% |
| Return YTD | −19.3% | −4.2% |
| Return 1Y | −23.2% | −19.4% |
| Since June 26, 2026 | +12.9% | −6.3% |
| P/E | 30.5 | — |
| P/S | 3.4 | 5.2 |
| P/B | 3.3 | 11.1 |
Data as of 2026-10-09 · updates daily after U.S. close
Since June 26, 2026: the change in the closing price, from the daily closes Sectivia records itself since that date.
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 →Talen EnergyTLN
Independent power producer whose Susquehanna nuclear plant sells directly to data centers.
Full TLN profile →More CEG & TLN comparisons
Other head-to-heads in the Utilities & power producers segment.