"Scaling up electricity from renewables is crucial for the decarbonization of the world’s energy system.
Solar, along with wind energy, would lead the way in the transformation of the global electricity sector. Wind power would be one of the major electricity generation sources, supplying more than one-third of total electricity demand. Solar PV power would follow, supplying 25% of total electricity demand, which would represent over a tenfold rise in the solar PV share of the generation mix by 2050 compared to 2016 levels. In the context of total installed capacity by 2050, much greater capacity expansion would be needed for solar PV (8,519 GW) as compared to wind (6,044 GW)."
International Renewable Energy Agency (IRENA) Future of Solar Photovoltaic
"According to the research group Bloomberg New Energy Finance, as recently as 2014 — a year before the Paris climate agreement was reached — electricity from solar and wind was cheaper than new coal and gas plants in probably 1 percent of the world. Today, only five years later, solar and wind provide the cheapest sources of new electricity in two-thirds of the world. Within five more years, these sources are expected to provide the cheapest new electricity in the entire world. And in 10 years, solar and wind electricity will be cheaper nearly everywhere than the electricity that existing fossil fuel plants will be able to provide."
Al Gore, New York Times, September 19, 2019
"Perhaps because of its technical, economic, and thermodynamic advantages, a renewable power sector would have six benefits over one reliant on conventional power plants, including (1) lower negative externalities per kWh, (2) more stable and predictable fuel prices, (3) fewer greenhouse gas emissions, (4) less water use, (5) improved efficiency, and (6) greater local employment and revenue."
Benjamin K. Sovacool and Charmaine Watts. The Electricity Journal, May 2009, Vol. 22, Issue 4, p. 99.