Shape, aspect, material, greening and the presence of solar panels are among the catalogued details.  According to the data, 1.3million UK homes, now have solar panels fitted, while 0.1% have thatched roofs and 92% are made of either tile, stone or slate.  The Ordnance Survey National Geographic Database [OS NGD] already holds extensive information on … Continue reading Ordnance Survey maps out 40m British rooftops for ‘unprecedented’ energy insight