The publication of feed-in tariff deployment statistics last month showed that with just 54MW of domestic solar deployed to date, London continues to lag far behind other areas of the UK despite having a much higher concentration of households and office buildings.

Boris Johnson has seemingly ruled out the establishment of a feed-in tariff top-up for Londoners, but how else can the mayor and the London Assembly stimulate the capital's PV market? The GLA's London Energy Plan could help, but it's clear other policy measures, such as a relaxation of planning laws, need to be investigated.