Solar panels / collectors can be relatively expensive to fit, although grants and subsidies may be available. When an excess of energy is produced, you are able to sell you environmentally friendly energy to the national electricity grid.
Relevant image keywords:
alternative energy, architecture, blue, blue sky, built structure, clay, clay tiles, climate, close-up, collectors, converting, convertors, detached house, electricity, energy, energy source, environment, environmental conservation, environmentally friendly, fuel and power generation, generator, green, home, house, in a row, innovation, natural energy, no people, outdoors, panels, power, power supply, recycling, residential building, roof, roof tiles, rooftop, sky, solar, solar cells, solar energy, solar energy panels, solar panel, solar panels, solar power, solar power station, sun, sunny, sunshine, technology, terracotta, terracotta tiles, tiles
