Your Complete Constellation Energy Stock Checklist for Stock Analysis
Constellation Energy stock (ticker: CEG) is the largest nuclear power operator in the United States, owning 21 plants with 32,400 megawatts of generating capacity. The thesis rests on three pillars: clean baseload electricity that data centers need around the clock, federal production tax credits from the Inflation Reduction Act that lock in minimum revenue floors per megawatt, and a grid that cannot replace nuclear without accepting either higher carbon emissions or rolling blackouts. Before you buy, every item on this checklist deserves a clear answer.
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Key Takeaways
- CEG's forward P/E sits near 25.4, above the utility sector median of 16.8, reflecting the growth premium the market assigns to its nuclear-plus-data-center narrative.
- The EV/EBITDA ratio near 14.2x is high for a utility but reasonable for a capital-intensive business with 20-year offtake agreements and federal subsidy protection.
- CEG's PS ratio of approximately 2.1x reflects revenue that is more predictable than most energy companies because roughly 70% is contracted.
- The Microsoft power purchase agreement signed in 2023, committing CEG to restart Three Mile Island Unit 1 and supply 835 megawatts to MSFT, is the clearest signal of institutional demand for nuclear baseload.
- Key risks: a single plant mechanical failure can knock 1,500+ megawatts offline with 48 hours' notice, and nuclear regulatory compliance costs are non-negotiable and tend to escalate.
- The Piotroski F-Score for CEG is 6, indicating acceptable financial health but not the top-tier balance sheet quality you find in names like MSFT (8) or UNH (8).
The Constellation Energy Stock Analysis Checklist
Work through each item before making a decision. Check off items that pass your threshold; flag items that need more research.
Valuation Checklist
- Forward P/E vs. sector: CEG forward P/E of 25.4 vs. utility sector median of 16.8. The premium is justified only if nuclear generation volumes grow or contracted pricing rises materially.
- EV/EBITDA: 14.2x. Acceptable for a regulated utility with long-term contracts, high relative to diversified utilities trading at 8-11x.
- PS ratio: 2.1x. Revenue of approximately $24 billion gives a market cap context. Compare to NextEra Energy at 3.4x for a premium clean-energy comparable.
- Free cash flow yield: approximately 3.2%. Below the 4-5% threshold most value investors prefer, but acceptable given the IRA subsidy tailwind.
- Margin of safety: At current prices near $220, a DCF using a 9% discount rate and 8% FCF growth implies fair value near $195. That gap is narrow, not a deep value setup.
Quality Checklist
- ROIC: Approximately 11.4%. Above the cost of capital (estimated at 8.5%), which means CEG creates shareholder value on each dollar reinvested.
- Piotroski F-Score: 6 out of 9. Passing score. Not exceptional, but no red flags in profitability, debt load, or operating efficiency signals.
- Debt-to-equity: 1.7. Above the 1.5 threshold many conservative investors use. The debt load reflects nuclear plant restart investments and is partly offset by long-term contracted revenue.
- Interest coverage: approximately 6.2x EBIT to interest expense. Adequate, not comfortable.
- Operating margin trend: Margins expanded from 8.1% in 2022 to 14.6% in 2025, driven by IRA production tax credits and higher contracted power prices.
Growth Checklist
- Revenue growth (3-year CAGR): 12.4%. Strong for a utility; reflects Power Purchase Agreement repricing as old contracts expire and new ones are written at higher rates.
- EPS growth (3-year CAGR): 31.7%. Elevated, partly due to IRA credits creating a tax benefit flow-through. This pace will not persist at the same rate once the credit baseline normalizes.
- Capacity pipeline: Three Mile Island Unit 1 restart adds 835 MW of capacity by late 2026, underwritten by the MSFT agreement. Calvert Cliffs relicensing extends through 2053.
- Data center demand: U.S. data center electricity consumption is projected to reach 9.1% of total U.S. electricity use by 2030, up from 4.5% in 2023. Nuclear provides 24/7 reliability that wind and solar cannot.
Risk Checklist
- Regulatory risk: Nuclear plants operate under Nuclear Regulatory Commission licenses. A safety finding can force a temporary shutdown with no revenue replacement.
- Concentration risk: 92% of revenue comes from U.S. operations. Illinois capacity alone represents 28% of revenue; adverse state-level regulatory decisions carry outsized impact.
- Fuel cost risk: Uranium prices have risen 80%+ since 2020. CEG hedges fuel costs 3-5 years forward, but unhedged exposure beyond that window is real.
- Execution risk (TMI restart): Three Mile Island Unit 1 has been offline since 2019. Restart projects of this scale routinely run 6-18 months over schedule.
Key Metrics at a Glance
| Metric | CEG Value | Utility Sector Median | Threshold to Pass |
|---|---|---|---|
| Forward P/E | 25.4x | 16.8x | Below 30x |
| EV/EBITDA | 14.2x | 9.5x | Below 18x |
| PS Ratio | 2.1x | 1.4x | Below 3.0x |
| ROIC | 11.4% | 7.8% | Above 10% |
| Debt/Equity | 1.7 | 1.2 | Below 2.0 |
| Piotroski F-Score | 6 | 5.8 | Above 5 |
| Free Cash Flow Yield | 3.2% | 3.5% | Above 3.0% |
CEG passes 6 of 7 metrics at the specified thresholds. The only miss is the forward P/E, which sits above 20x where utility investors traditionally expect to see a valuation cap.
What the Market Is Pricing In
At $220 per share, the market is pricing in: continued IRA subsidy payments through at least 2032, successful TMI restart on schedule, and sustained data center demand that requires nuclear's specific clean-baseload characteristics rather than shifting to other sources.
None of those assumptions are unreasonable. Each carries execution risk that a stock trading at a utility-sector premium has little cushion to absorb if they disappoint.
The most defensible position is a partial entry at current prices with a defined plan to add below $185 if the valuation compresses. That gives you exposure to the nuclear-AI demand thesis while keeping dry powder for a better entry.
Further reading: SEC EDGAR · FRED Economic Data
Related ValueMarkers Resources
- Forward Pe — Glossary entry for Forward Pe
- Ps Ratio — Glossary entry for Ps Ratio
- Enterprise Value to EBITDA (EV/EBITDA) — Enterprise Value to EBITDA is the metric used to how cheaply a stock trades relative to its fundamentals
- Energy Stocks Overview — related ValueMarkers analysis
- Clean Energy Investing — related ValueMarkers analysis
- Meta Stock Valuation Is Meta A Value Buy — related ValueMarkers analysis
Frequently Asked Questions
what happens if the stock market crashes
When the stock market crashes, utility stocks like CEG typically fall less than the broad market because regulated revenue and contracted power agreements continue regardless of equity market sentiment. In the 2020 Covid crash, the utilities sector fell 22% versus the S&P 500's 34% decline. CEG's specific crash behavior would depend on whether credit markets tighten enough to threaten its debt refinancing schedule.
what time does the stock market open
The U.S. stock market opens at 9:30 a.m. Eastern Time. CEG and all NYSE/Nasdaq-listed stocks begin trading at that time. For energy stocks, early morning is particularly active because overnight power futures often move on weather forecasts and grid demand data released before the open.
are stock markets closed today
U.S. markets close on 11 federal holidays per year. On all other weekdays, markets run from 9:30 a.m. to 4:00 p.m. Eastern. CEG trades on Nasdaq; you can verify market status on any financial data site under the Nasdaq market hours calendar.
what time does the stock market close
U.S. markets close at 4:00 p.m. Eastern. After-hours trading in CEG continues until 8:00 p.m. Eastern on most brokerages but with thin volume. Earnings releases from utility companies typically come after the close.
when does the stock market open
The stock market opens at 9:30 a.m. Eastern Monday through Friday, excluding federal holidays. Pre-market activity in CEG sometimes reflects overnight news from nuclear sector regulators or power futures markets.
why is the stock market down today
Markets fall when sellers outnumber buyers at current prices. For an individual stock like CEG, a down day usually traces to sector-wide rotation (investors selling utilities to buy growth), interest rate sensitivity (utility stocks correlate inversely with 10-year Treasury yields), or company-specific news like NRC filings or earnings revisions.
Written by Javier Sanz, Founder of ValueMarkers. Last updated April 2026.
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Disclaimer: This content is for informational and educational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any security. Past performance does not guarantee future results. Consult a licensed financial advisor before making investment decisions.