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I saw a video recently that pumped water into tanks and used used the air as a spring. Just dip a pipe down and use the air to move the water. Extracting energy from a hyrdo generator.
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Totally out of my depth here, but does cooling the gas down have the added benefit that it'll be heated by the earth whilst stored?
I'm guessing not. Earth's heat is way lower down. Think of a cave: always cold. I think what's going on is they're taking the heat out and storing it more efficiently than just dumping it down the ground, where (1) it would leak away, representing energy loss, and (2) as it leaks away, the air would lose pressure. (It would leak away b/c it's harder to insulate an entire mine, basically.) So, they pull it out ahead o…
Air is kind of a shitty working fluid. I always kind of dismiss compressed air storage because of that. I saw a video recently that pumped water into tanks and used used the air as a spring. Just dip a pipe down and use the air to move the water. Extracting energy from a hyrdo generator. https://youtu.be/sBF5EnK9MPs
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The VC and investment world in energy technology is quite different then the A16z and traditional VC world or financial heavyweights. Having had GS invest in companies in the energy tech space in the past and having not particularly great success - I wouldn't think this is a strong signal. More that the financial heavyweights think there is action and they want to get in.
Goldman has army of analysts that are covering the field. Many many more than Even VCs that specialize in it. I would definitely write them off when it comes to smart investing.
Its small money on a broad industry bet thats all in an economy with very few quality investments available. Don't read too much into it.
It's probably some kind of hedge strategy for energy crises like the recent Texas disaster (which appears to have been very profitable for GS [1]). Having this capacity around when other sources go down means they'll be able to provide power in similar situations and so reap massive profits. Climate chaos == $$$ I guess. > Bloomberg March 5, 2021 > Goldman Sachs Group Inc. could gain more than $200 million from the p…
This is where capitalism goes off the rails. Instead of investing $250m into making the power grid more secure and reliable, they choose to invest in profiting off disaster.
Batteries with a design that can decouple the energy from the power ratings, like this one, will be able to address parts of the market that lithium ion cannot. And if the cost per MWh of additional energy is cheap, and round trip efficiency stays above 50% or so, that sort of battery will have a huge edge in a part of the market that currently has no clear winners.
There are many competitors in the non-lithium ion storage space, but one of the top contenders to watch is Form energy, which has a rust-based battery, and is rumored to have a cost as low as $20/MWh, about a tenth of that of lithium ion.
Can someone explain their revenue to me? They claim 1m in revenue from their existing product which is: "1.75 megawatts (MW) of peak power output; a 2.2 MW charge rating; and 10+ megawatt-hours (MWh) of storage capacity" How does that equal 1m in revenue? You have to pay to charge your air-battery during low-cost hours and then discharge it during high cost hours to make the difference in revenue. The issue is, you c…
Take a look at the price maps and historical pricing data if you are curious https://www.caiso.com/todaysoutlook/Pages/prices.html