But that's only twice as big as 1.25 watts per square meter.

That's a big investment for a community.

Yeah. I believe we don't really appreciate what we have, and I only speak for myself.

But her dream of Coal River Mountain Wind is her legacy.

The next thing is What about the footprint? Stewart mentioned the footprint.

Wind is wonderful I love wind.

Now to charge the battery, we connect a source of electricity.

And the chart here shows the difference between the emissions from the regular grid, resulting if you use nuclear, or anything else, versus wind, CSP or photovoltaics.

Along the eastern seaboard, we're going to lead the nation in offshore wind.

This has to be a bridge to the point where you can get to wind, to the point where you can get to solar, to the point where you can get to nuclear and hopefully you won't build the next nuclear plant on a beautiful seashore next to an earthquake fault.

Remember where we are, 1.25 watts per square meter, wind farms 2.5, solar parks about five.

We're often told though that only coal and nuclear plants can keep the lights on, because they're 24 7, whereas wind and solar power are variable, and hence supposedly unreliable.

So, if you wanted to get 16 lightbulbs remember, today our total energy consumption is 125 lightbulbs' worth if you wanted 16 from wind, this map visualizes a solution for the UK.

The whole business is run on sustainable energy.

Wind is a cheap and clean source of energy.

If in the time that it took me to walk out here on this stage, some tens of megawatts of wind power stopped pouring into the grid, the difference would have to be made up from other generators immediately.

These are some questions that we've yet to ask.

Unless you look at the system as a way to treat waste water, sequester carbon, and potentially for photovoltaic panels or wave energy or even wind energy, and if you start thinking in terms of integrating all of these different activities, you could also include in such a facility aquaculture.

In places like Denmark and Germany, they've maxed out on wind already.

In fact, every region of the country could do this.

You cannot do a wind deal under six dollars an MCF.

So far there is only three sources of baseload electricity coal, some gas, nuclear and hydro.

That is how, for example, four German states in 2010 were 43 to 52 percent wind powered.

There are other options for generating power as well, which don't involve fossil fuels.

Everybody talks about carbon taxes it won't work emission schemes, but for example, one policy measure, feed in tariffs on the energy system, which is already applied, from China doing it on offshore wind systems, all the way to the U.S. where you give the guaranteed price for investment in renewable energy, but you can subsidize electricity to poor people.

That's where it is on all the time.

That's a fourfold increase over today's levels of nuclear power.

Should we allow the same mistake to happen again?

I've got a hydro conversion at a watermill that I own.

Let's talk a little bit about how nuclear fission works.

pennsylvania's exercising leadership on solar power and wind power.

If the environmental agency can't decide that the power lines are good for the environment, then there's no way to bring the power from the wind farms to the city.

CA And so, and that windmill, what it worked?

In the scope that we're currently using them, and I think that if we amplify the scope of both wind and solar, then we're also going to be looking at a larger destruction as well.

Rather, when smart autos exchange electricity and information through smart buildings with smart grids, they're adding to the grid valuable flexibility and storage that help the grid integrate varying solar and wind power.

And so it takes a very large footprint on the land, a very large footprint in terms of materials, five to 10 times what you'd use for nuclear, and typically to get one gigawatt of electricity is on the order of 250 square miles of wind farm.

But instead of just showing us the information, we can take our finger and explore, and see, state by state, exactly how much wind potential there is.

Power it generates heat,

We have been trying to put solar and wind online for decades.

Saul Griffith did the numbers and figured out what would it take to get 13 clean terawatts of energy from wind, solar and biofuels, and that area would be roughly the size of the United States, an area he refers to as Renewistan.

This one shows the wind potential all around the United States.

Finding the mother tree under which children can talk about their problems and worries.

Nuclear power currently accounts for less than 4 of the energy consumed worldwide.

Iran is doing that right now.

Wind and solar can't help, because so far we don't have a way to store that energy.