How much could solar panels save in Hoddesdon?

That depends on how much of your solar electricity you use at home and on your tariffs, so we model it for your household. PVGIS estimates about 1,026kWh a year per kWp for a south-facing, 35-degree roof at Hoddesdon's EN11 coordinates, allowing 14% system losses. On that basis, ten AIKO 485W panels (4.85kWp) would be modelled at roughly 4,970kWh a year before site shading. Each unit you use yourself is one you do not buy from the grid; the Ofgem price cap's GB average Direct Debit unit rate for October to December 2026 is 26.32p per kWh. Outgoing Octopus pays 12p per kWh exported, and Smart Export Guarantee payments require an MCS-certified installation, which ours are.