Heat pumps need electricity to work, but generate more energy than they use.

"We need the light and electricity around here, but most of it is going north," she said.

Or: I didn't know our generator needs electricity to turn on!

But businesses and people need electricity, no matter what it costs, so demand does not vary much with price.

You know what would have been a smart thing to do in these developing countries that need electricity?

But to succeed you also need to satisfy people's basic needs: jobs and electricity.

If a region needs electricity, they reach for a power plant.

If we need electricity over the next few months.

It doesn't need electricity, and the spigot at the house is close enough for water.

Power producers use this information to plan how much electricity they will need to make available at any given time.