The Smart Export Guarantee (SEG) pays you for every unit of solar electricity you export to the grid. Rates vary dramatically — from 4p/kWh on the worst tariffs to over 30p/kWh on time-of-use export tariffs during peak hours. Outgoing Octopus dropped from 15p to 12p/kWh on 1 March 2026, changing the rankings significantly. This guide shows the current best rates and how to choose the right expo...