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So in 2020, they had deployed $20 million of Powerwalls and saved $4 million that year? How can the utility make so much money with them?
by sp332 4y ago
So in 2020, they had deployed $20 million of Powerwalls and saved $4 million that year? How can the utility make so much money with them?
- toomuchtodo 4y agoSaves on gas peaker plant runtimes (and potentially capacity payments, which generators can receive for being on standby). Instead of firing up an inefficient once through gas turbine (really just a jet engine bolted to the ground), you call on the distributed batteries in aggregate to discharge for a short duration (and, ideally, they charged when power was cheap and low carbon). Refer to first chart “Levelized Cost of Energy Comparison-Unsubsidized Analysis”, “gas peaking” cost: https://www.lazard.com/perspective/levelized-cost-of-energy-levelized-cost-of-storage-and-levelized-cost-of-hydrogen/ https://www.lazard.com/perspective/levelized-cost-of-energy-... Note the quoted gas peaking cost ($151-$196 per MWh) is assuming a fossil gas cost of $3.45/MMBTU. Current spot prices are double that (Henry Hub). https://www.eia.gov/dnav/ng/hist/rngwhhdm.htm https://www.eia.gov/dnav/ng/hist/rngwhhdm.htm
- deleted 4y ago[deleted]