Key points
- SEG is the default route for systems up to 5 MW
- Corporate PPAs suit larger systems that need revenue certainty
- Aggregators can beat SEG rates by trading combined output
- An export MPAN + HH metering is required for accurate payment
Smart Export Guarantee (SEG)
The default route for systems up to 5 MW. Every licensed supplier must offer an SEG tariff; rates vary widely, so shop around.
Corporate PPA
A long-term agreement (usually 10–15 years) to sell your export to a single buyer at a fixed or indexed price. Suits larger systems that want revenue certainty.
Route-to-market aggregators
Aggregators bundle multiple small generators and trade the combined output on the wholesale market — often at better rates than a plain SEG tariff.
Metering requirements
You need an export MPAN and half-hourly metering to be paid accurately. Your supplier or DNO can set this up.
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