How much electricity will solar panels generate in Marlow?

PVGIS, the European Commission's solar model, estimates about 1,028kWh a year per kWp for a south-facing, 35-degree roof at the SL7 centroid, using SARAH3 data for 2005 to 2023 and 14% system losses. Facing east, the same roof is modelled at about 824kWh per kWp, and facing west about 801kWh. On that basis, ten AIKO 485W panels (4.85kWp) facing south would be modelled at roughly 5,000kWh a year, before any shading from trees or buildings, which we assess on site. Smart Export Guarantee payments require an MCS-certified installation, and our installations are MCS certified.