The sun also rises

Wind, solar, and other renewable energy important part of any present-day energy the portion of energy they supply to the certainly be increasing over the next few Arguably, large-scale wind power has reached technological maturity, and with more than 100 GW of capacity ample experience exists on integrating wind systems. Solar technologies, on the other emerging, and substantial R&D investments are being made to achieve parity with retail electricity costs in the near future. As this happens, annual capacity additions of solar power will become significant.