People are still making the use of wind power supply but you can't compare the percentage of its output and utilization to that in hydroelectric power supply, solar and any other renewable means of power supply such bio gas organic power supply and many more, the capacity to which all these could provide us individuals is vert little compared to an industrial application which more demands for power, this makes it more common today that the best in use is with the hydroelectric power supply, wind power supply probably could be applicable in some certain levels on research purposes or where the demand in limited to high voltage supply.
for the maintenance costs incurred, hydro energy is said to have a greater cost than wind energy but there is something even cheaper, that is solar energy;
The energy the earth absorbs from the sun in just 1 hour is enough to power the planet for a year. Why, then, is the world not taking greater advantage of this renewable energy source?
Fossil fuel infrastructure is well-established and difficult to phase out. On top of that, humans have only recently managed to harness the sun’s energy in a way that is also efficient, scalable, and relatively affordable. About 80% of the world’s energy still comes from fossil fuels like oil, coal, and natural gas.
Solar energy capacity in the United States is made up of large- and small-scale systems. Solar energy at utility scale — large facilities that generate at least 1 megawatt of power for the grid — represents the largest solar market in the U.S. The second largest market is residential, followed by commercial and community.
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https://www.rocketsolar.com/learn/energy-efficiency/how-cost-solar-panels-has-fallenis still a complicated issue, why does the U.S. Govt focus on
(renewable) wind energy whereas based on data and facts, it will only make them pay more than other renewable energy developments.