What different types of fuels are used in CHP systems?
Bill: I don’t have the numbers to back this up, but I am guessing that 95% of CHP systems that installed today are operated on natural gas. Most turbines and reciprocating engines are natural gas fired. There are a few that I am sure are running on fuel oil. When you start talking about steam turbines that is a slightly different issue, because there are quite a few steam turbines are running off of coal plants. But most gas turbines and reciprocating engines that go in for a bunch of reasons, including environmental issues, natural gas is by far, the preferred fuel. John: If I can add to that, Bill is absolutely correct. Again, I don’t have the numbers either, but the preferred fuel or the majority of installed CHP systems are run off of natural gas. What we are seeing here in the Midwest mainly due to price fluctuation and the volatility of natural gas, we are seeing a lot of interest in CHP systems, granted, a little smaller in size, maybe up to a couple Megawatts and down to a half
