At the end of 2017, solar energy accounted for 1.9 percent of global electricity demand and only 0.1 percent of primary energy consumption. Since then, the share of solar energy has been increasing rapidly and was by far the most installed energy source in 2022. The terawatt threshold, or 1000 GW, fell in 2022. The share of solar energy was 3.7% in 2022.

CCities wants to increase the expansion of renewable energies in all sectors and help special municipalities and cities to make the right decisions for investments for more energy efficiency.