In some countries it's much harder to build a profitable solar farm than a profitable wind farm. Both are viable in much of the United States. In 2016, the US

In some countries it's much harder to build a profitable solar farm than a profitable wind farm. Both are viable in much of the United States. In 2016, the US installed 8203 MW of wind power: https://www.awea.org/wind-energy-facts-at-a-glance https://www.awea.org/wind-energy-facts-at-a-glance It installed ~14000 MW of solar PV, including about 10000 MW of utility scale projects: https://www.seia.org/solar-industry-data https://www.seia.org/solar-industry-data Given the higher capacity factor of utility-scale wind over solar, wind still has the lead in effective electricity supply added in 2016. But both are being built. Through Q3 in 2017 in the US, solar is actually way ahead of wind in terms of capacity increases. Q4 usually dominates the year for both wind and solar, so it remains to be seen if that's true with full-year data. Large scale solar construction in the US could slow down significantly in the near future depending on how harshly the solar module import tariffs/quotas derived from the Suniva ITC case are set.