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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.
Bebic et al. (2009) studied this question.