How it works
You provide the roof. The PPA provides everything else.
They build and own it.
The funder pays for design, equipment and installation. The system is owned, maintained and insured by the provider for the whole term — performance risk sits with them.
You buy the power.
Monthly costs are based on the energy the system actually generates, at an agreed rate — generally lower than your current supply rate. Generation drops, costs drop with it.
You can take it over.
Buy the system out at any point in the agreement, or let the fixed end-of-term route play out. Either way the asset ends up working for you.
Prefer to own from day one? Compare PPA against rental and hire purchase — or see the calculator for outright costs.
Questions
The questions asked before every PPA.
What is a solar Power Purchase Agreement?
A funder builds, owns and operates a solar system on your roof or land, and you buy the electricity it generates at an agreed rate — generally lower than your current supply rate. You get cheaper, cleaner power with no capital outlay; the provider carries the asset.
Who maintains and insures the system under a PPA?
The provider. Under a PPA the system is owned, maintained and insured by the funder for the term of the agreement — performance risk sits with them, not you.
How long does a solar PPA last?
Terms run from 7 to 30 years, and you can buy the system out at any time during the agreement if you later decide you want to own the asset.
Is a PPA better than buying the system outright?
It depends on your capital position. Outright purchase captures the full 2–5 year payback and the tax relief; a PPA delivers savings from day one with £0 upfront and no maintenance obligation. We model both against your half-hourly data so you can compare like for like.
What happens at the end of the PPA term?
Typically the system transfers to you or the agreement is extended — the route is fixed in the contract at the start, so there are no surprises in year twenty.
See PPA numbers for your site.
Send us your site details — we model PPA, hire purchase and outright purchase against your real consumption, so you compare like for like.
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