Category: Procurement

What Does a Sleeving Fee Cover in a UK Sleeved PPA?

The sleeving fee pays a supplier to take a solar farm's output, balance it and deliver it to your meters. What it covers, how it is quoted and what to negotiate.

In a sleeved PPA, a licensed electricity supplier stands between you and a solar farm you do not own. It takes the farm's output, matches it against your demand and delivers it to your meters as part of your supply. The sleeving fee is what the supplier charges for doing that. Understanding what the fee pays for is the fastest way to tell a fair quote from an expensive one.

What the supplier actually does

• Takes title to the output. The supplier buys the farm's metered generation under its own contract with the generator, normally for the full term.
• Balances and shapes it. Solar output rarely matches your half-hourly demand. The supplier absorbs the difference — buying top-up power when the farm under-delivers and selling the surplus when it over-delivers — and carries the imbalance exposure under the Balancing and Settlement Code.
• Carries credit risk both ways. The supplier is exposed to the generator's performance and to your ability to pay, for a decade or more.
• Handles the certificates. REGOs from the farm have to be transferred and retired against your consumption for a market-based renewable claim; Ofgem issues one per megawatt-hour.
• Settles and bills. Sleeved and residual volume are reconciled half-hourly against your MPANs and appear on one invoice.

REGO issuance: Ofgem — REGO scheme. Verified 26 Sep 2026.

Why there is no standard price

No UK supplier publishes a standard sleeving fee. It is quoted per deal, either as a pence-per-kWh adder on the sleeved volume or as a fixed annual service charge, and each of the services above is priced to the specific deal. A farm whose output is shaped to your load costs more to sleeve than one delivered as generated, because the supplier takes on more of the firming. A long term, a weaker covenant or a small volume all push the fee up; a large, creditworthy buyer with a flat daytime load pushes it down.

What the fee does not cover

The fee is only one line in the sleeved price. Because sleeved power crosses the public network, network charges, balancing costs, policy levies and the Climate Change Levy all remain on your bill, exactly as they would for grid power. A quote can look cheap because it leaves those out, or expensive because it bundles them in — so ask which it does before comparing two offers. The full stack is laid out on our sleeved PPA page.

Five questions to put to any supplier

• Is the sleeving fee stated separately from the generator tariff, or blended into one number?
• Is it fixed for the PPA term, or reset at each supply renewal?
• Who pays imbalance when the farm under- or over-delivers against the agreed shape?
• Can the sleeve be novated to another supplier if you switch — or if this supplier fails?
• Are the REGOs from the contracted farm transferred and retired in your name, and is that written into the contract?

The answers matter more than the headline number. A slightly higher fee that is fixed for the term and portable to another supplier can be worth more than a lower fee that re-prices every two years.