The power purchase agreement (PPA) is the single most important contract in a utility-scale solar project. It defines the revenue that supports the financing, and lenders scrutinise it closely before committing capital. A bankable PPA balances the developer's need for certainty with the offtaker's need for flexibility.
Tariff and indexation
The pricing structure, fixed, indexed, or a blend, determines how revenue behaves over the project's life. Currency of payment, indexation to inflation, and any merchant exposure are central to whether a project can raise long-term debt.
Allocation of risk
Curtailment, grid availability, change in law and force majeure all need clear allocation. Where the offtaker is a state utility, the strength of payment guarantees and the availability of sovereign support can be decisive for financing.
Lenders do not finance sunshine; they finance the contract that turns sunshine into predictable, enforceable revenue.
Termination and security
Termination payments, step-in rights for lenders, and the security package together determine what happens if the project or the offtaker falters. Getting these provisions right is what makes the difference between a financeable project and a stranded one.
