The cost of renewable energy has tumbled even further over the past year, to the point where almost every source of green energy can now compete on cost with oil, coal and gas-fired power plants, according to new data released today.
Hydroelectric power is the cheapest source of renewable energy, at an average of $0.05 per kilowatt hour (kWh), but the average cost of developing new power plants based on onshore wind, solar photovoltaic (PV), biomass or geothermal energy is now usually below $0.10/kWh. Not far behind that is onshore wind, which costs close to $0.12/kWh.
