Michaud and his company, AVEtec, are building a prototype of its Atmospheric Vortex Engine to create tornadoes about 40 meters high that can produce energy from waste heat.
The energy would be free of carbon emissions, and would only cost 3 cents per kilowatt hour. As a reference, coal can cost anywhere from 4 to 5 cents per kwh.
the smarter thing to do would be to use a solar concentrator. These are typically pointed at some oil or salt fluid that is used to boil water. but I don’t think they produce electricity at 3 cents a kilowatt hour.