BBCNEWS BBC News June 4, 2024 09:53:00
So you get a lot of heat stored in a small, small space. the finns now plan to massively expand their sand system, making it 1,000 times bigger. the researchers hope the world can quickly benefit. they say the sands of time have run out for fossil fuels, and it's now time for sand. yeah, it's cheap and easy to build. and we really like to license this technology and give it for a good use as widely as possible. this idea still faces big challenges. can it store electricity as well as heat? if that can be done economically, sand could well be a simple solution to a global problem. matt mcgrath,...