Well natural gas would certainly fit the bill for them.
I gotta admit, I don't particularly care for using natural gas for power generation either. There are far too many other uses for natural gas, and I'm afraid if we start relying on it too heavily for electricity as well, we'll just create a shortage and drive the price up for all the uses.
Makes more sense to me to use nuclear and clean coal technologies for central power generation. That way natural gas remains more abundant for distribution for home, commercial and industrial applications.
About thirty years ago, I shared a row of airline seats with a veteran (and very high ranking) engineer from, as I recall, Babcock & Wilcox. There was talk of an "energy crisis" at the time, remember.
His take on the matter was crystal clear. Use fuel energy in the most efficient fashion -- meaning:
a. Use coal to raise steam.
b. Use nukes to generate electricity
c. Use petroleum products to power automobiles
d. Use natural gas for home heating and cooking.
Each would thus be employed to do what they do best. And there would be no "energy crisis", short-term, or for the foreseeable future.
In this equation, wind power and solar power would be used to power remote applications -- beyond the reach of utility lines. Solar power, by the way, is great for electric fences. And there are a lot of ranches up in the remote Davis Mountains of West Texas that employ windmills for household electricity.
One wonders why it is so very difficult for liberals to understand these rather fundamental matters.