The Ledger
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Ackerman: Current battery tech is too costly and resource-constrained for entire grid
“But with our current battery technology, it would just be way too expensive To back up the entire electric grid. Plus, it would require more materials like lithium and cobalt than we have sitting around right now.”
Ackerman: Molten salt storage delivers 80% to 90% round-trip efficiency
“And these molten salt tanks, they are quite efficient. You get back about 80 to 90% of the energy you put in.”
Ackerman: Northfield Mountain pumped hydro can power 1M homes for 8 hours
“Len told me that when the reservoir at Northfield Mountain is pumped full of water, it can be used to power about a million homes for eight hours.”