My goal as governor is for Colorado to have the cleanest air and the cleanest water in the country, and to be a model for the nation in using clean, renewable sources of energy.

I'm a monomaniac with one goal: clean air from clean energy.

Of course we have to use coal... the renewable energy sources will supplement the supply from coal.

I spent more than 20 years of my professional career researching and developing renewable energy sources.

We should not just consume hydrocarbon fuel but use it to develop nuclear energy, hydro power and renewable energy sources.

We've offered direct financial support for a range of renewable energy sources, whether it be large-scale solar, whether it be geothermal, whether it be wave power or wind power.