Last updated: August 30, 2026
Data Center Power Purchase Agreements (PPAs), Explained
A power purchase agreement is the long-term contract that lets a hyperscaler lock in a fixed block of electricity years before a data center opens — and, increasingly, it's the financial commitment that gets a new nuclear or gas plant built in the first place. For a landowner or broker, understanding who has actually signed one and who's still shopping is one of the fastest ways to separate a genuinely advanced project from land-banking speculation.
⚡ TL;DR — Data Center PPAs
- • What it is: a long-term (typically 10-20 year) contract where a buyer locks in electricity from a specific power plant at a fixed price
- • Two main types: physical PPAs (buyer takes actual delivery) and virtual/synthetic PPAs (a financial hedge, no physical power flows)
- • 2026 scale: roughly a dozen disclosed hyperscaler nuclear PPAs committing close to 10 GW combined — the largest private nuclear procurement wave since the 1970s
- • Notable deals: Microsoft's Three Mile Island Unit 1 restart agreement; Meta's multi-reactor commitments across several nuclear developers
- • Why it matters to landowners: a signed PPA is a strong signal a project has cleared financing hurdles and is more likely to actually get built nearby
Physical vs. Virtual: The Two Structures That Matter
Physical PPA
The buyer takes actual delivery of power, generally because the generating asset and the load sit in the same grid region or are directly interconnected. This is the more common structure for large, co-located or near-site generation deals, including many of the newer nuclear and gas agreements tied to a specific data center campus.
Virtual (synthetic/financial) PPA
No power physically changes hands. The buyer and generator settle the difference between a contracted price and the prevailing market price, while the buyer separately purchases actual power from its local utility at whatever that market charges. This structure is more flexible geographically but exposes the buyer to basis risk if local prices move differently than the referenced market.
Sleeved PPA
A hybrid where a utility or retail energy provider sits between the generator and the buyer, physically delivering the contracted power and handling the grid-level logistics the buyer would otherwise have to manage directly. Common where the buyer isn't a licensed power marketer in a given state.
Behind-the-meter / colocated generation
Not a PPA in the traditional sense, but an increasingly common alternative: generation built directly on or adjacent to the data center site itself, bypassing much of the transmission-level contracting entirely. See our guide on on-site power and natural gas generation for how this compares.
The 2026 Nuclear PPA Wave, With Real Numbers
The clearest evidence that PPAs have shifted from a sustainability talking point to core infrastructure strategy is the pace of nuclear deals signed since 2025. Industry trackers following disclosed hyperscaler nuclear agreements counted roughly a dozen projects by mid-2026, with combined committed capacity approaching 10 gigawatts — a scale of private-sector nuclear procurement not seen since the original wave of US reactor construction in the 1970s. Every major hyperscaler has now signed at least one nuclear-linked power deal, a notable change from just a few years earlier when renewable PPAs and carbon offsets dominated corporate energy strategy.
Microsoft's agreement to buy power from the planned restart of Three Mile Island's Unit 1 reactor — a roughly 835-megawatt unit targeted for a 2027 return to service — is one of the most widely cited examples, structured as a long-term (roughly 20-year) purchase commitment that gave the plant's owner the financial certainty needed to move forward with the restart. Meta has taken a broader, multi-developer approach, committing to several gigawatts of capacity spread across more than one nuclear technology and developer rather than betting on a single project. Not every deal is nuclear, either — some hyperscalers are also locking in large hydropower and other firm renewable commitments, reflecting a broader strategy of diversifying baseload sources rather than relying on any single generation type.
See our nuclear power and SMRs guide for how these generation projects actually get sited and built, and our on-site power and natural gas guide for the behind-the-meter alternative some developers are pursuing instead of or alongside a traditional PPA.
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What a Signed PPA Actually Tells a Landowner
This is the part that matters most if you're not the one negotiating the power contract. Getting a PPA signed, especially for a large nuclear or gas project, requires clearing significant financing, regulatory, and counterparty-credit hurdles — it's one of the harder milestones in bringing a large generation project to reality, not a press-release formality. A developer or buyer who has already secured power through a signed agreement has demonstrated real financial commitment, which makes it more likely (though never guaranteed) that an associated data center campus proceeds on a realistic timeline rather than stalling indefinitely.
That has practical implications for nearby land. Large generation and transmission buildouts tied to a PPA often require additional parcels for substations, switching stations, or transmission right-of-way beyond the original generating site — and a data center campus tied to a firm power source is a stronger, more durable source of demand for adjacent industrial land than one still shopping for power in an already-strained interconnection queue. See our interconnection queue guide for how a project's place in that queue relates to (but isn't the same thing as) having power actually contracted.
A practical diligence question
When a developer or broker approaches you about your land, it's fair to ask directly whether the project behind the inquiry has power secured through a signed PPA, is still negotiating one, or is purely speculative land-banking ahead of any power arrangement. None of those answers should automatically disqualify a conversation — early-stage interest is still real interest — but the answer should calibrate your expectations about timeline. A project with power already contracted is generally closer to breaking ground than one that's still assembling the pieces, and that difference is worth factoring into how you evaluate competing offers or how patient you're willing to be with an option agreement.
Risks and Trade-offs Worth Understanding
- Virtual PPAs carry basis risk — if local power prices move differently than the market referenced in the contract, the financial hedge can perform worse than expected even though it's working exactly as designed
- Long contract terms (10-20 years) cut both ways: they give a generator the certainty to finance a project, but they also lock a buyer into a price that can look good or bad depending on how wholesale power markets move over the life of the deal
- A signed PPA doesn't eliminate permitting, interconnection, or construction risk for the underlying generation project — it removes one major hurdle, not all of them
- Not every developer approaching a landowner has a PPA in place, and that's not necessarily a red flag on its own — but it is a reasonable factor in judging how advanced a given project actually is
- Nuclear restarts and new-build projects tied to hyperscaler PPAs still face real regulatory and construction timelines measured in years, not months, regardless of how firm the power contract itself is
Frequently Asked Questions
What is a power purchase agreement in the data center context?
It's a long-term contract, usually 10 to 20 years, where a data center operator (or its parent company) agrees to buy a fixed amount of electricity or generation output from a specific power plant at an agreed price. It's how hyperscalers lock in large, predictable blocks of power years before a facility comes online, and increasingly it's also how they help finance new generation — a signed PPA from a creditworthy buyer is often what makes a nuclear, solar, or gas project bankable in the first place.
What's the difference between a physical and a virtual PPA?
A physical PPA means the buyer actually takes delivery of the power, typically because the generating asset and the data center sit in the same grid region or are directly interconnected. A virtual (or synthetic/financial) PPA involves no physical delivery at all — it's a financial contract-for-differences where the buyer and generator settle the difference between the contract price and the market price, while the buyer separately purchases its actual power from the grid at whatever the local utility charges. Virtual PPAs are more flexible and don't require the generator and load to be near each other, but they carry basis risk if the buyer's local power price moves differently than the market referenced in the contract.
Why are hyperscalers signing nuclear PPAs now?
Because AI training and inference load needs firm, round-the-clock baseload power, and renewables paired with batteries haven't scaled fast enough to meet it on their own. As of mid-2026, industry trackers count roughly a dozen disclosed hyperscaler nuclear deals committing close to 10 gigawatts of capacity combined — the largest wave of private-sector nuclear procurement since the 1970s. Microsoft's agreement to buy power from the restarted Three Mile Island Unit 1 and Meta's multi-reactor commitments across several nuclear developers are the clearest public examples of this shift from exploratory renewable deals toward underwriting new and restarted baseload generation directly.
Does a developer's PPA affect the value of nearby land?
It can, indirectly. A developer that has already signed a PPA — especially for a large nuclear, gas, or renewable project — has cleared one of the hardest parts of getting a data center campus financed and built, which makes it more likely that project actually proceeds and that the developer will need adjacent or nearby land for substations, transmission upgrades, or future phases. A landowner near a site with a publicly announced PPA has a genuine reason to expect follow-on interest, though it's worth confirming a specific project's status rather than assuming every rumored deal in a region is equally advanced.
Should I ask a data center developer about their power arrangement before signing anything?
Yes, and a serious developer won't be bothered by the question. Whether a project has a signed PPA, an active interconnection request, or is still purely speculative land-banking tells you a lot about how close it actually is to breaking ground — and how realistic near-term outcomes are for your parcel. It's a reasonable diligence question, not an overreach, and it's one more thing our team factors in when reviewing a submitted site.
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Your information is reviewed privately. We only use submissions to evaluate potential fit and relevant opportunities.