The Solar Energy Action Plan operates in London, according to which the design capacity of the solar power plants in the British capital will increase about 10 times till 2030 and reach 1 GW and up to 2 GW till 2050. This software is designed to help solve macro problems. In the middle of the century London must become a neutral carbon  black called zero carbon city. Greater London occupies 1600 km3 of territory, 1/3 of which is covered with roofs. solar panels can be installed not only on these roofs, but also on facades, adjacent roads, and other areas.

Source: here.