Tell me why there are 14,000 abandoned wind mills in America if it’s “free”.
In spite of your fantasy, there are operating costs, not the least of which is ensuring there is replacement energy available to compensate for lack of sunshine and wind.
As to your “only expense”, tell that to the company that spent 5 years fighting DiFi and the Sierra Club, to set-up a 500 Megawatt solar plant in the Mojave dessert, as they decried the “environmental impact”.
The company finally gave up, after considerable “only” expense with no return.
The simple fact is the enviro-whackos don’t want solutions that work.
These dirt firster’s don’t want the industry or the people anywhere on the planet.