BBCNEWS Click October 28, 2021 02:40:00
When you need it, which might be when it's dark or not very windy. now, in the past, we've seen excess electricity being used to pump water up a mountain so it can flow back down when you need the extra power boost, or to send a train up a hill and it rolls back down when you need it. well, here's an idea from germany, where you use energy to pump water out of giant spheres, which are under the sea to create a vacuum! and then, when you need extra electricity, you let the water back in, which turns a turbine and you get your light—bulb moment. the researchers hope these can be sunk under the...