Why did renewables become so cheap so fast?
Dec 01, 2020 · The world's electricity supply is dominated by fossil fuels. Coal is by far the biggest source, supplying 37% of electricity; gas is second and supplies 24%. Burning these fossil fuels for electricity and heat is the largest single source of global greenhouse gases, causing 30% of global emissions. 3 The chart here shows how the electricity prices from the longstanding sources of power ...