Microgenerators continue to be required to comply with IS EN 50549-1 but the internal protection settings have been revised to facilitate the connection of much greater volumes of microgeneration on the network.

Additionally, to provide clarity and simplicity, the export rating of 25A (approx. 6kVA) single phase or 16A/Phase (Approx. 11kVA) three phase, is now assessed based on the size of the Inverter through which the PV panels transport their generation. This is because the Inverter will limit any output to 6kVA/11kVA, even if there is an over-install of generation (above 6/11kVA) behind the inverter, for the purposes of increasing kWh production at times of lower light levels.

However, the peak export from the Inverter must not exceed 6kVA single phase or 11kVA three phase.

Note: Only registered microgenerators are eligible for any export payments.