The cost of producing wind or solar electricity is about seven cent per kilowatt per hour. Most of the costs are spread over multiple periods of the capital investments. That means that the costs of the electricity is spread over the period of the usefulness of life in years, for example 20 years. Seven cent per kilowatt-hour is competitive with coal and nuclear, but more expensive then natural gas. But there is a serious problem with wind and solar electricity. The problem is that wind and solar is generating erratic electricity, it comes and goes and nobody can control that. And there is another problem and that is the subsidies, which are actually nothing else then additional taxes for the clients, industries and the governments (and coming back to its taxpaying citizens).