PPA Mechanics

End-of-Contract Options on a Solar PPA

Solar panels routinely produce for 30+ years; PPAs run 15-25 years. So what happens at the end? Three standard pathways, each with different financial implications.

Option 1: Extend the PPA

Most PPAs include an extension option — typically at fair market price for the remaining asset life. Year 25 panels still produce ~88% of original capacity, so an extension at a re-negotiated lower tariff (often 6-8 p/kWh) is common.

Option 2: Buy the system at fair market value (FMV)

The off-taker buys the asset at FMV — usually established via independent valuation referencing remaining useful life and current electricity prices. By year 25 the system is often worth 10-25% of original capex. Buy-out then converts you from PPA off-taker to direct owner: kWh becomes "free" subject to O&M.

Option 3: System removal

Provider removes the system at no cost. Roof is left in agreed condition (mounting holes patched, electrical isolated). Rarely chosen — most off-takers prefer extending or buying because by year 25 the panels are still productive and a removal is a missed opportunity.

What to negotiate upfront

• FMV calculation method specified in writing — not left to year-25 dispute.
• Right of first refusal: provider can't sell the asset to a third party without offering it to you first.
• Pre-agreed extension tariff bands, ideally referenced to a forward-curve formula.
• Provider O&M obligations during any extension period.