Yesterday's WSJ had an interesting article about how a startup is using a old steel factory in West Virginia to make large rechargeable batteries out of iron (as opposed to lithium) that can run homes / businesses for 100 hours. The battery uses oxygen to turn the iron into rust, which generates electricity. Then, it uses solar and wind to generate electricity to recharge the battery by turning the rust back into iron, creating oxygen.
That's why I'm hopeful that we'll eventually solve the climate problem because of innovation.
© 2023 Praveen Puri
