And they had to use electricity to run their systems.

They use only 25% as much electricity to give the same light.

In another thousand years we'll probably be using them the way we use electricity now.

The plant also uses enough electricity to power a city of more than 50,000.

And one way to do so is to use electricity to power vehicles.

He made a piano that could be heard far away by using electricity.

I don't know if they used electricity or not, but he looked like he'd aged 10 years.

These new appliances use a lot less electricity than the ones we used to have.

At this time, he heard of a local paper mill that was going to begin using electricity.

They also do not use electricity as it involves violence.