Constellation Energy Corporation (CEG) | The Buildout — AI Infrastructure

The Verdict

Constellation Energy produces and sells electricity and capacity. After the January 2026 Calpine merger it operates the largest private-sector power fleet in the world, built around the largest nuclear fleet in the United States, with gas, geothermal, hydro, wind and solar alongside it. It sells that output under long-term contracts to hyperscalers, data center developers, businesses, utilities and financial counterparties. For the AI buildout, that makes it a supplier of the input that is increasingly the binding constraint — already-built, already-interconnected firm power — rather than a technology vendor. Its growth depends less on inventing anything than on signing long-dated agreements for plants that already exist, which is why regulatory decisions about how large loads connect to the grid matter so much to its story.

Earnings Beat

In Q2 2026 Constellation reported revenue of $7,506M and EBITDA of $1,277M, a 17.0% EBITDA margin. GAAP earnings per share were $1.42; adjusted operating earnings per share were $2.55, $0.64 above the year-ago quarter. Contracting was the standout: about 920 MW of long-term nuclear deals signed since the prior call, averaging 18.5 years with investment-grade counterparties, taking contracted clean baseload to roughly 30%. Management raised FY26 adjusted operating EPS guidance to $11.50–$12.50 from $11.00–$12.00.

Management tone: The tone moved from waiting for clarity to acting on early clarity. On the Q1 2026 call management affirmed guidance and described some customers choosing to pause and wait for regulatory clarity; on the Q2 2026 call it raised the guide, disclosed about 920 MW of signed contracts, and described the speed at which FERC is requiring PJM to move as unprecedented. Management declined to name counterparties or narrow the disclosed $20–$50/MWh price range, gave what it called a nonanswer on which site contracts next, and tempered new-nuclear expectations by saying nothing was imminently on the horizon. It also acknowledged co-location was moving slower than it wanted.

Management Guidance

Management raised FY26 adjusted operating EPS guidance to $11.50–$12.50 from $11.00–$12.00, attributing the increase to strong commercial execution and disciplined capital allocation. On the Q1 2026 call it guided to $8.4B of free cash flow before growth for 2026–27 and $11.5B–$13B for 2028–29, about a 45% increase, and did not restate those figures on the Q2 call. It also updated the 2029 capital-allocation sensitivity to a $0.20 per-share floor with more than $0.75 of upside, and revised the 2030 nuclear PTC strike price to $50.88/MWh from $49.88 — about $0.30 per share of 2030 base earnings — assuming a 2.8% adjustment for 2025 and 2% annual inflation thereafter, with more upside if inflation runs higher.

Trajectory

Revenue grew 64% year over year in Q1 2026, to $11,122M from $6,788M, as Calpine entered the consolidated numbers for a full quarter. Q2 2026 revenue was $7,506M, up 23% from $6,101M a year earlier, with EBITDA of $1,277M at a 17.0% margin. The code-computed signals flag revenue as accelerating and gross, operating and EBITDA margins as expanding, but mix explains much of it: Q1 2026 carried $3,581M of 'other revenue sources' — largely derivative and trading marks — against $682M a year earlier. Nuclear generation was steady at roughly 40 TWh in each of Q1 and Q2 2026, at capacity factors of 92.3% and 93%, and management attributes the improved results to Calpine accretion, higher PJM capacity prices and commercial margin capture in volatile markets. Free cash flow is the weak spot: negative $850M in Q1 2026 and negative $118M in Q2 2026.

The Model

The model projects FY+1 revenue of $34,500M with EBITDA of $8,004M, a 23.2% margin, then FY+2 revenue of $36,000M with EBITDA of $9,000M, a 25.0% margin. The near-term anchor is the full run-rate of the Calpine assets plus higher PJM capacity prices and the raised earnings guide; the FY+2 step implies EBITDA margin expanding by 1.8 percentage points, which would require more of the nuclear fleet to be contracted long-term and a mix shift toward the higher-margin nuclear-heavy regions. The five runs behind the locked numbers spread 14% on FY+1 revenue and 13% on FY+2.

Projections are the median of 5 independent model runs. The model’s revenue sits 16.4% above analyst consensus.

Management raised FY26 adjusted operating EPS guidance to $11.50–$12.50 from $11.00–$12.00, attributing the increase to strong commercial execution and disciplined capital allocation. On the Q1 2026 call it guided to $8.4B of free cash flow before growth for 2026–27 and $11.5B–$13B for 2028–29, about a 45% increase, and did not restate those figures on the Q2 call. It also updated the 2029 capital-allocation sensitivity to a $0.20 per-share floor with more than $0.75 of upside, and revised the 2030 nuclear PTC strike price to $50.88/MWh from $49.88 — about $0.30 per share of 2030 base earnings — assuming a 2.8% adjustment for 2025 and 2% annual inflation thereafter, with more upside if inflation runs higher.

What Could Go Right — and Wrong

Looking Ahead

The next twelve months turn on two tracks: whether the contracting wave that started in Q2 2026 continues, and whether the rules that gate large-load connections arrive when management says they will. Management has dated overall PJM clarity to year-end, the capacity auction to this fall with results by year-end, and its co-location response to around November 2026, with a FERC order expected in Q1–Q2 2027. The company says it will not commit to new build until it sees more detail from PJM, the Illinois ZEC program ends in May 2027 with no confirmed replacement, and the CyrusOne Freestone substation timeline it gave in Q1 was not updated in Q2.

Financials

Annual Summary

Key Ratios (Trailing)

The Company

Constellation sells electricity and capacity rather than equipment or software. Its defining asset is its nuclear fleet, and around that it has wrapped a competitive retail supply platform and, with Calpine, a gas, geothermal, solar, battery and development engine. The 10-K self-describes the company as the largest private-sector power producer in the world, the nation's largest producer of clean and reliable energy with 55 GW of capacity, and the largest nuclear energy company in the U.S. It serves roughly 2.5 million customer accounts, including three-fourths of the Fortune 100 in the 10-K — a figure management updated to over 80% on the Q1 2026 call — and delivers about 275 million megawatt hours of electricity and 800 Bcf of natural gas a year across 40 states. Its customer products include CORe+, an hourly carbon-free energy product that matches carbon-free generation to a customer's load every hour, and Constellation Navigator.

The January 2026 Calpine merger changed the company's shape, adding roughly 23 GW and a development platform in new natural gas, solar and battery storage, plus capability in natural gas data center transactions. Constellation now reports four regional segments — Mid-Atlantic, Midwest, ERCOT and Other Power Regions — with Calpine still reported separately in the Q1 2026 10-Q. Several plants are only partly owned: Quad Cities at 75%, Peach Bottom at 50%, Salem at 42.59%, Nine Mile Point 2 at 82% and South Texas Project at 44%. The fleet's value rests on license life; management says the vast majority of its generation is secured through 2050 and beyond.

Business Segments

Competitive Landscape

The competitive set for large-load power is mostly other nuclear and gas generators. Supply-chain wiring names Talen, Vistra, NextEra, NRG, AES, PPL, NET Power, Hallador and LNG, with Hut 8 labeled a verified competitor, and PSEG appearing as both a competitor and a co-owner of the Salem units. Constellation's filings describe it as the largest nuclear energy company in the U.S., and management says the fleet's licenses extend through 2050 and beyond, so the material does not read the fleet itself as easily replaced. The competitive risk it identifies is that other suppliers sign the same hyperscalers first, or that co-location rules settle on a structure Constellation is less able to serve.

Supply Chain

Constellation sits between fuel, equipment and construction suppliers and the utilities, businesses and data centers that buy its power. No neighboring company named Constellation on its own earnings call, so most supply-chain links are read-throughs rather than disclosed relationships.