Power purchase agreements in plain language | Overstory

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20 March 2026

What you are buying, what can go wrong and which clauses matter.

Written by Alasdair Keir7 min

The number

7 min

What you are buying, what can go wrong and which clauses matter.

A power purchase agreement fixes the price of clean electricity for ten years or more. That is the whole idea.

Three clauses to read twice

Shape: who pays when the wind does not blow
Curtailment: who pays when the grid says stop
Change of law: who carries a new levy

Get those right and the rest is detail.

Book a baseline callAll insights

Rolling green downs with trees seen from above

Next · InsightLand is the quiet half of the footprint

Insights

What we learn on client work, written down plainly: how to count, what to cut first and what a regulator will ask for.

An open book showing a photograph of a windswept tree

Report12 May 2026 · 9 minImpact report 2025: 2.1 million tonnes, counted twiceWhat our clients cut last year, how we measured it and where we were wrong.

Insights

What we learn on client work, written down plainly: how to count, what to cut first and what a regulator will ask for.

An open book showing a photograph of a windswept tree

Report12 May 2026 · 9 minImpact report 2025: 2.1 million tonnes, counted twiceWhat our clients cut last year, how we measured it and where we were wrong.

Insights

What we learn on client work, written down plainly: how to count, what to cut first and what a regulator will ask for.

An open book showing a photograph of a windswept tree

Report12 May 2026 · 9 minImpact report 2025: 2.1 million tonnes, counted twiceWhat our clients cut last year, how we measured it and where we were wrong.

Sun breaking over a misty field at dawn

Start here

Thirty minutes with a consultant. You leave with a rough footprint, the two biggest cuts and what a full pathway would cost.

01Company size

02What you need first

Your call: Pick a size and a service

Book a baseline callEmail us instead

No cost, no deck. Replies inside one working day.

Sun breaking over a misty field at dawn

Start here

Thirty minutes with a consultant. You leave with a rough footprint, the two biggest cuts and what a full pathway would cost.

01Company size

02What you need first

Your call: Pick a size and a service

Book a baseline callEmail us instead

No cost, no deck. Replies inside one working day.

Sun breaking over a misty field at dawn

Start here

Thirty minutes with a consultant. You leave with a rough footprint, the two biggest cuts and what a full pathway would cost.

01Company size

02What you need first

Your call: Pick a size and a service

Book a baseline callEmail us instead

No cost, no deck. Replies inside one working day.

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