If 272 million light duty vehicles in the US were all 100 kWh BEVs, they would store enough energy to run the entire US electricity grid for two and one-half days, holding 27,248 GWh. We will be halfway there by 2040.pic.twitter.com/jNzExxaC5E
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Hydrogen is definitely good for longer term storage, but BEVs feeding back into the grid is a no brainer once battery longevity improves (like how Tesla’s latest patents portend). I’d be interested in reading about the 30 day requirement if you have an article or paper to link.
This blog post and paper by @KenCaldeira from 2018 is a good overview and links to other work as well.
I agree V2G is a no brainer but seems like we'll still need additional bulk storage.https://kencaldeira.wordpress.com/2018/03/01/geophysical-constraints-on-the-reliability-of-solar-and-wind-power-in-the-united-states/ …
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Note hydro power & nuclear power provide 27% of US electricity which implies that wind & solar could be the compliment along with biomass, bulk storage, micro storage and v2g. Challenge will be demand from the shift from fossil based heat energy to electricity based heat energy.
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Yes - I was just thinking about my own Brooklyn townhouse - could go off grid with oversized PV and some batts, except for winter heat pump needs (so many batts/not a lot of roof). Might even be physically possible, but $$$.
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A good paper from 2015 by
@DKeithClimate makes the underappreciated point that today's gas plants work as infrequent backup for more wind+solar, with potentially very low avg CO2. Along with utility scale batts/V2G, many ways to skin the storage cat!https://drive.google.com/file/d/0B6wfH8hIAchFa1NPMXVpMk9MQ2M/view … -
Thank you for sharing! Fascinating, properly modelling the dynamics of prices of alternatives impacting market shares. Also, achieving low cost bulk storage may not be a necessity even for a zero carbon grid, given dispatchable hydro, nuclear, CCS & falling costs of RE.
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Interesting post. I agree with the authors that we should be pushing to get to 80% renewables ASAP. I think insulation, heat pumps, and other efficiency advances will significantly change the demand curve by the time we get there though. Maybe we'll need less storage?
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