I happened to be logged into ChatGPT, so asked it your question.
This is what it came back with:
🔝 Highest-Paying UK Export Tariffs (as of April 2025)
Most of these require you to take electricity from the same supplier.
E.ON Next – Next Export Premium Plus: 40p/kWh
Requires: E.ON Next import supply. For customers with solar + battery installed by E.ON after 1 Jan 2024.
Octopus Energy – Intelligent Octopus Flux: 29.4p/kWh (time-of-use)
Requires: Octopus import supply. Designed for customers with solar and a GivEnergy battery.
Octopus Energy – Octopus Flux: 25.9p/kWh (time-of-use)
Requires: Octopus import supply. For solar + battery users.
E.ON Next – Next Export Premium: 25p/kWh
Requires: E.ON Next import supply. For customers with solar installed by E.ON after 1 Jan 2024.
EDF Energy – Export Exclusive 12m: 20p/kWh
Requires: EDF Energy import supply. For EDF customers with solar PV.
⚡ Standalone Export Tariffs (no import supply required)
These let you keep your current electricity provider while selling your export separately.
Octopus Energy – Outgoing Lite: 8p/kWh
Standalone SEG export only. No need to take Octopus electricity supply.
Scottish Power – SmartGen+ Export: 12p/kWh
Standalone SEG export only. Available to non-Scottish Power customers.
Good Energy – Smart Export: 20p/kWh
Standalone available with a Smart meter. Subject to eligibility.
E.ON Next – Next Export: 16.5p/kWh
Standalone export version of E.ON’s tariff. Lower than their bundled rate.
HTH.