But how do the costs of any of the above compare to the cost of building a wind turbine? Even taking the fuel and operations and maintenance cost to be free, how does one compare the capital cost against other renewables where you don't pay for fuel?<p>If you use a Brayton-cycle gas turbine for a nuclear reactor, for example, now heat exchange to the gas becomes the biggest issue. And even the most optimized gas peaker turbine plants cost $500/kw.