You don’t need to cover a whole roof with PV solar panels before the installation becomes both economically and ecologically viable. The idea of a grid-tie PV installation on your balcony is starting to gain traction with so many office workers now working from home, any energy input from sunlight can help offset the additional domestic power usage during daylight hours. These mini power plants are quite cheap and even benefit from subsidies in some European cities. I looked into the regulations governing them, did some research on the equipment and went ahead with the installation.