In the world of power generation, the amounts of electricty a fossil fule plant can produce is well known. If a certain amount of natural gas is pumped into a boiler, a known amount of steam will be produces and therefore the energy produced is known. No surprises. Conventional energy production cannot be compared to renewable energy in the same way.Installed capacity with conventional energy production closely matches that actual energy production; not so with wind energy. Most engineers familar with wind energy will agree that the most one will get out of a wind project is less that 20% of the installed capacity, more like 10% to 13%, depending on location. As part of the certification required by the application, and in the spirit of transparency, an third party engineer's certification should be required showing the actual energy that can be expected based on at least one year of actaul measured wind data at the site, with back up wind data.