Suppliers with more than 150,000 customer accounts will have to offer an export tariff for customers that install solar, wind, anaerobic digestion or hydro generation with a capacity up to 5MW, under a new Smart Energy Guarantee (SEG). The obligation also includes micro CHP with an electrical capacity of up to 50kW.

Suppliers will also be able to offer other export tariffs and buy power from ‘more complex systems’, which could include storage and non-renewable energy, provided they are co-located with an SEG installation.