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This article is the 13th article in the series: Ground to Grid: A Free 21-Lesson Guide to Mastering Data Center Development
A data center development becomes financeable at the moment someone signs a contract to use it.
Before that signature, the project is a plan with land, drawings, and a power application. After it, the project has a revenue stream a lender can measure.
This is the commercial layer of development, between site control and construction financing.
Three documents drive it: the lease or pre-lease, power purchase agreement, and pre-commitment or build-to-suit arrangement.
Each one converts an assumption into an obligation.
The developer assumes demand will arrive. The contract replaces that with a named party who has agreed to pay whether it does or not.
Pre-development is funded almost entirely with equity, typically 50 to 70 percent of the stack at entitlement stage, because nothing is contracted yet.
Senior construction debt becomes available once a signed lease and a guaranteed maximum price EPC contract are in place.
Pre-leasing now runs three to four years ahead of delivery, at 70 to 90 percent of capacity.
The Three Contracts
The lease or pre-lease. Data center space is leased by critical IT capacity, measured in MW or kW per month, rather than square footage.
A powered shell lease delivers the building and high-voltage power, while the tenant installs electrical and cooling systems.
These run 15–20 years, cost $11–14 million per MW, and price at a 7.0–8.0% cap rate.
A turnkey lease delivers fully commissioned server halls, typically for 10–15 years at $100–150 per kW per month, costing $15–20 million per MW and pricing at 5.5–6.5%.
The power purchase agreement. A PPA is typically a 5–20-year contract to buy electricity at a pre-agreed price, locking in the asset’s highest operating cost.
Physical PPAs deliver power to a named grid node, while virtual PPAs settle financially and hedge costs without physical delivery.
Behind-the-meter arrangements use on-site generation; front-of-the-meter arrangements rely on the public grid.
The pre-commitment or build-to-suit. The tenant commits before design is finalized and shapes the specification around its own requirements.
The term underneath is take-or-pay: the tenant pays a fixed capacity charge on the full reserved load from rent commencement, whether or not a single server has been racked.
How the Contracts Allocate Risk
A long lease moves absorption risk from the developer to the tenant.
The developer no longer carries the cost of an empty building.
A PPA moves electricity price and supply risk to the generator and gives the lender a fixed input cost.
A build-to-suit or take-or-pay contract moves demand risk almost entirely to the tenant, which supports the highest leverage.
Risk does not disappear at the developer’s end.
Turnkey leases carry a contractual power-usage effectiveness cap, and any drift above it is the developer’s cost.
On a 100 MW campus at $0.08 per kilowatt-hour, a 0.10 drift runs to more than $7 million a year.
Delay damages typically run $1,000 to $5,000 per MW per day past target COD.
Long-stop dates must be sequenced so the contractor’s deadline falls before the tenant’s termination right, which falls well before loan maturity.
Why the Counterparty Matters as Much as the Contract
The contract is only as bankable as the party signing it.
Senior lenders model a minimum debt service coverage ratio of 1.15 to 1.25 times against an investment-grade tenant.
Against a weaker counterparty, or a contract permitting volume flexibility, that floor rises to 1.35 to 1.50 times.
Higher coverage means less debt, and more equity for the same building.
A hyperscaler lease sits at the strong end: investment-grade balance sheets and often a parent guarantee on rent commencement and termination fees.
An AI-native tenant sits differently.
Demand may be intense, and the term may be long, but the credit is thinner.
Lenders respond by tightening structure: no walk-away rights, must-pay economics, bankruptcy-remote special purpose vehicles, and receivables assigned in advance.
NVIDIA now provides take-or-pay commitments, and minimum revenue guarantees on neocloud capacity, reaching $36 billion by late July 2026.
That gives lenders a creditworthy name in place of the operator.
A Worked Example
In September 2024, Microsoft signed a 20-year PPA for 100 percent of the 835 MW output of Three-Mile Island Unit 1, now the Crane Clean Energy Center.
The estimated all-in price is $100 to $115 per MWh, and the contract supports a $1.6 billion restart of a reactor that would otherwise have remained shut down.
Constellation did not finance that restart against a power price forecast.
It financed against a 20-year obligation from an investment-grade buyer. The cash flow reads like a bond to a lender.
Structure mattered as much as credit. Microsoft took delivery at the front of the meter under standard PJM tariffs.
Talen Energy and Amazon Web Services went behind the meter at Susquehanna, and FERC rejected that interconnection agreement in November 2024.
Strategic Implications
For developers. Secure the anchor tenant before pursuing debt. The lease determines how much capital you can raise and at what cost. A weak tenant raises lender coverage requirements, reduces debt capacity, and forces more expensive equity. Accepting a weak tenant just to reach financial close is often worse than delaying.
For investors. Assess the counterparty as closely as the contract. A long lease with a weak tenant may be short-lived. Look beyond the headline term: review cancellation rights, parent guarantees, termination fees, and regulatory dependencies. Two contracts can model identically but carry very different risks.
For operators. Lease and PPA terms govern revenue and major costs for years. Efficiency covenants become operating obligations, while PUE caps create liability when performance slips. Capacity charges begin at rent commencement, so commissioning delays reduce margins. Involve the operating team before terms are finalized.
For policymakers. PPA structures influence which generation gets built and when. Long-term offtake from a creditworthy buyer can finance major generation projects. Behind-the-meter versus front-of-the-meter structures also determine who bears transmission costs, driving requirements for minimum capacity commitments and upfront infrastructure funding.
Key Takeaway
You do not finance a data center. You finance the contracts behind it.
The lease and the PPA are the project’s real collateral. The building is what they are attached to.
That changes what you examine first. The megawatt figure and the design tell you what is being built.
The lease term, the coverage ratio, the termination rights, and the delivery structure tell you whether it gets built at all.
The tenant’s credit is what makes the paper worth anything. The debt quantum, the equity requirement, the cost of capital, and the timeline to close are all priced off that one signature.