From
https://en.m.wikipedia.org/wiki/Cost_of_electricity_by_source
The cost of wind power is less than solar.
<< In the windy great plains expanse of the central United States new-construction wind power costs in 2017 are compellingly below costs of continued use of existing coal burning plants. Wind power can be contracted via a power purchase agreement at two cents per kilowatt hour while the operating costs for power generation in existing coal-burning plants remain above three cents.[118] >>
LCOE – Levelized Cost Of Electricity
https://en.m.wikipedia.org/wiki/Levelized_cost_of_energy
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Life Cycle greenhouse gas emissions of energy sources Wiki
https://en.m.wikipedia.org/wiki/Life-cycle_greenhouse_gas_emissions_of_energy_sources