Corporate PPAs in 2026: Why Capture Prices Are Forcing a Rethink

The corporate power purchase agreement was, for most of the last decade, a beautifully simple instrument. A buyer agreed to take a solar plant's output at a fixed price for ten or fifteen years; the developer got financeable revenue; the buyer got cheap, green, predictable electricity. That simplicity is breaking down in 2026 — not because PPAs have failed, but because the market underneath them has moved.

The capture-price squeeze

The problem has a name: the capture price. This is the average wholesale price a solar plant actually earns for its electricity, and it is lower than the average market price — because solar generates most heavily at exactly the hours when abundant solar has already pushed prices down. As solar penetration rises across Europe, this cannibalisation deepens.

The result is that solar capture prices have fallen to roughly 50-60% of the baseload price. In Spain, solar capture prices have dropped toward €40/MWh. In Germany, a ten-year solar PPA now breaks even at around €50/MWh — the level a developer needs simply to finance the plant. When the price the plant can capture drifts toward the price it needs to survive, the comfortable margin that made simple PPAs easy to sign disappears.

Why "pay-as-produced" is dying

The classic PPA structure is pay-as-produced: the buyer takes whatever the plant generates, whenever it generates it, at the agreed price. That structure quietly hands the buyer all of the shape risk — they receive a flood of electricity at midday when it is worth least, and nothing in the evening peak when they may actually need it.

In a world of collapsing midday capture prices and, in some markets, outright negative prices during sunny hours, pay-as-produced becomes a worse and worse deal for the buyer to underwrite and a harder one for the developer to finance. Neither party is comfortable, which is why the market is visibly shifting away from it.

The move to structured and hybrid PPAs

What is replacing it is a family of more sophisticated contracts designed to manage shape rather than ignore it:

• Baseload-shaped PPAs, where the seller commits to deliver a flatter, more predictable profile rather than raw solar output — pushing the shaping problem onto whoever is best placed to solve it.
• Hybrid solar-plus-storage PPAs, where a co-located battery shifts generation out of the saturated midday window and into the higher-value evening hours. This directly attacks the capture-price problem: electricity dispatched at 7pm is worth far more than the same electricity dumped at 1pm.
• Proxy and floor structures that allocate price and volume risk explicitly between buyer and seller, rather than leaving it implicit in a single fixed number.

The common thread is that storage is moving from a nice-to-have to the core of a bankable contract. A battery is what lets a solar PPA deliver a profile a buyer actually values, and it is increasingly what lets the plant capture a price high enough to finance itself. Our energy storage work sits at the centre of this shift, because the storage layer is now what makes the commercial case close.

The honest caveats

Two things worth stating plainly. First, adding storage adds cost and complexity; a hybrid PPA is only worth structuring where the value uplift from time-shifting genuinely exceeds the cost of the battery, and that has to be modelled market by market — a Spanish solar profile and a German price curve produce different answers. Second, capture-price forecasts are exactly that — forecasts. Over a ten-year contract, the spread between midday and evening prices could widen or narrow depending on how fast storage and flexible demand scale across the system. A well-structured PPA prices that uncertainty rather than pretending it away.

What buyers should take away

The corporate PPA is not in trouble — the naive version of it is. For a buyer signing today, the question is no longer just "what price per MWh," but "what shape, and who carries the risk of that shape being worth less over time." The answer, increasingly, involves storage in the structure and a contract that allocates capture-price risk deliberately.

If you are evaluating a PPA — as an offtaker or as a developer building for one — the design of the contract now matters as much as the headline price. Our Solar Project Intake is the right starting point for a grounded view of what a storage-backed, capture-price-aware structure looks like for your specific load and market, rather than a template that the last five years have quietly made obsolete.