Massive iron batteries could be key to displacing natural gas from the grid

The Inflation Reduction Act will give renewable energy a boost, but they haven't taken over because they're dependent on the weather.

Storage of excess power raises the cost of renewable power. There is a race among startup to find the cheapest way to do it, from batteries to compressed air.

Many of the batteries used are the same chemistries used in EV batteries. The scale of EV battery production allows it to get a foothold in the sector, but its long-term prospects for grid-scale storage are murkier given its high cost of materials.

There are many uses for batteries beyond electric vehicles, which is why some companies, like Germany's VoltStorage, are trying to build batteries using the cheapest, most widely available materials.