RE:So What About Solid State Electric batteries?The biggest lithium-ion battery is in Australia, built by Tesla. It cost 70 million Aussi dollars.
The in-situ costruction for getting it operational for storing excess electricity in the Hornsdale Power Reserve, was an additional 172 million Australian dollars.
This system is providing electricity to 30,000 households.
This storage battery appears to function reliably, however Its operation still needs yearly subsidies.
And we thought Elon Musk only designed and built Tesla vehicles.