Engineering Recommendations

The grid connection of PV systems is governed by two engineering recommendations made by the Electricity Association:

G83/1 ‘Recommendations for the connection of small-scale embedded generators (up to 16A per phase) in parallel with public low voltage distribution networks' contains a generic first section addressing the network requirements of all distributed micro-generators (including PV and micro-CHP), complemented by a series of annexes focusing on technology-specific issues, including annex C on photovoltaics. Under G83/1 the generator is required to inform the DNO on the day of connection and then provide full details within 30 days.

Grid-interconnection of PV systems over 16 Amps per phase is governed by Engineering Recommendation G59/1, Amendment 1 (1992) and Amendment 2 (1995), 'Recommendations for the Connection of Embedded Generating Plant to the Public Electricity Suppliers’ Distribution Systems'.