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Post by David B. Benson on Oct 28, 2020 9:43:09 GMT 9.5
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Post by David B. Benson on Oct 29, 2020 4:40:10 GMT 9.5
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Post by David B. Benson on Oct 30, 2020 5:40:08 GMT 9.5
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Post by David B. Benson on Dec 10, 2020 4:41:46 GMT 9.5
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Post by David B. Benson on Dec 10, 2020 12:29:16 GMT 9.5
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Post by thinkstoomuch on Dec 10, 2020 18:55:34 GMT 9.5
Nope they probably mean 55 GW. Right now peak for just CA ISO is somewhere around 50 GW. Daily usage average for the year is around 600 GWH. More in summer less in winter.
As a side note 55GWH would more or less than half the current(2020) average daily solar in summer. So it might fix the duck curve in summer currently. Not the current demand of between 600-900 GWH demand in summer day.
T2M
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Post by David B. Benson on Jan 7, 2021 16:49:24 GMT 9.5
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Post by David B. Benson on Jan 7, 2021 17:00:47 GMT 9.5
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Post by Roger Clifton on Jan 20, 2021 15:25:45 GMT 9.5
Nope they probably mean 55 GW. How long must the "Long-duration storage" store energy for? California's peak demand of 55 GW in 2045 is estimated in the (above) link. To supply 100% renewable energy with that peak demand in sustained bad weather, they estimate that California would need a total "long-duration storage" able to accumulate and supply the maximum load of 55 GW. However the article does not state how long it would have to store it for, or for how many successive days of bad weather it must supply up to 55 GW. Our ThinksTooMuch helped Roger Andrews calculate ( see webpage) that with 55 GW of demand, 17 TWh of PHES would be needed to store energy between good and bad seasons. That is, for months. If there were no losses, that could store the equivalent of 13 days at full blast (enthusiasts for lithium batteries can only claim a few hours) of 55 GW, but alternately trickled out and topped up across the year. However there certainly would be losses such as evaporation from their PHES. |
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Post by David B. Benson on Feb 25, 2021 22:45:05 GMT 9.5
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Post by David B. Benson on Mar 20, 2021 14:00:45 GMT 9.5
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Post by David B. Benson on Mar 31, 2021 10:48:40 GMT 9.5
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Post by David B. Benson on Apr 30, 2021 2:42:11 GMT 9.5
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Post by David B. Benson on May 2, 2021 17:01:38 GMT 9.5
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Post by David B. Benson on May 5, 2021 1:51:27 GMT 9.5
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Post by David B. Benson on Jun 4, 2021 5:56:48 GMT 9.5
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Post by David B. Benson on Aug 3, 2021 5:26:02 GMT 9.5
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Post by David B. Benson on Dec 2, 2021 3:58:40 GMT 9.5
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Post by David B. Benson on Jan 8, 2022 4:14:08 GMT 9.5
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Post by David B. Benson on Apr 27, 2022 5:26:58 GMT 9.5
How a new heat battery can quickly make millions of homes gas-free 2022 Apr 25 Phys.org techxplore.com/news/2022-04-battery-quickly-millions-homes-gas-free.htmlSalt+water is exothermic! Completely reversible to store more heat. Recharge with the waste heat from industrial processes. Ingenious and appears to be almost immediately practicable. Ought to win an award, in my opinion. |
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Post by David B. Benson on Jun 3, 2022 4:08:20 GMT 9.5
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Post by David B. Benson on Jun 13, 2022 3:44:14 GMT 9.5
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Post by David B. Benson on Jul 8, 2022 3:24:58 GMT 9.5
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Post by David B. Benson on Jul 11, 2022 13:34:49 GMT 9.5
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Post by David B. Benson on Sept 27, 2022 7:15:56 GMT 9.5
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Post by David B. Benson on Nov 18, 2022 4:53:25 GMT 9.5
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Post by huon on Nov 19, 2022 5:41:58 GMT 9.5
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Post by David B. Benson on Dec 25, 2022 9:46:30 GMT 9.5
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Post by David B. Benson on Feb 19, 2023 13:06:25 GMT 9.5
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Post by David B. Benson on Feb 28, 2023 9:43:54 GMT 9.5
Pumped hydro key to meeting storage demand 2023 Feb 24 PV Magazine www.pv-magazine.com/2023/02/24/pumped-hydro-key-to-meeting-storage-demand/As illustrated there are lots of potential sites for pumped hydro. However, these tend to be at some distance from demand centers, incurring a substantial transmission line cost. Furthermore, there may be objections from the local people. So far, here in the western US, the existing pumped hydro facilities are barely paying their way with daily change-discharge cycles and further development plans don’t seem to make any progress. |
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