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.
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Get an indicative PPA tariffYear-25 output of roughly 88% of original capacity only holds if the array has been maintained to specification throughout, which is exactly what how PR guarantees are measured is designed to police.
A right of first refusal only helps while the asset is still with its original owner, so negotiate as well for the scenario covered in what happens if the provider defaults.
A fair-market-value buy-out at 10–25% of the original outlay only means something if you know what that outlay was, so start from original capex by system size.
A contract that runs past 31 March 2035 outlives the current business rates exclusion for solar plant, so its end-of-term clauses need to say who pays if that changes.
What you pay to leave early is usually set by reference to the PPA tariff and the provider's outstanding investment, so read the two clauses side by side.
Leases end differently: at the end of a solar lease the equipment is typically returned, the lease extended or the system bought at an agreed value.
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End-of-Contract Options on a Solar PPA — tell us about your site and we'll return an indicative p/kWh tariff for it. Reply by email within one working day.