Alan Ambrose Posted October 25 Share Posted October 25 See: https://www.theguardian.com/environment/2024/oct/24/power-grid-battery-capacity-growth This sounds good, but what are the implications: No point in having house-based batteries as the grid does it cheaper? Renewables + batteries as good as nuclear etc? More transmission capacity required? Link to comment Share on other sites More sharing options...
ProDave Posted October 25 Share Posted October 25 Batteries don't generate power. They help smooth the peaks and troughs of usage demand and match it to also variable renewable generation. No more no less. so they will be an essential part of a more renewable generation. Link to comment Share on other sites More sharing options...
PNAmble Posted October 25 Share Posted October 25 I find it very funny all these people working out ROI on PV and Battery on export at 15p when in 12-24 months we’ll be the same as California and you’ll be at -15p. this will move really quickly so be very certain on your ROI re renewables. Link to comment Share on other sites More sharing options...
SteamyTea Posted October 26 Share Posted October 26 (edited) Why do they not mention the storage capacity in the article. It is all very well having x amount of GW, but for how long. Edited October 26 by SteamyTea Link to comment Share on other sites More sharing options...
Alan Ambrose Posted October 26 Author Share Posted October 26 Written by liberal arts grad trying to explain to ‘the man in the street’? (ducks and hides behind wall) 1 Link to comment Share on other sites More sharing options...
Alan Ambrose Posted October 26 Author Share Posted October 26 (edited) OK so: Kimberly is a journalist/lawyer Mark is a thought leader with degrees in geography and history Here’s the source: https://www.eia.gov/todayinenergy/detail.php?id=63025 Actually maybe that way of reporting capacity is somehow standard for some reason? https://www.energy.ca.gov/data-reports/energy-almanac/california-electricity-data/california-energy-storage-system-survey#:~:text=From 2018 to 2024%2C battery,by the end of 2024. For baby batteries, I know the generation/current is often specified in ‘C’ with C being the capacity and often around 1 see e.g. https://www.power-sonic.com/blog/what-is-a-battery-c-rating/ Edited October 26 by Alan Ambrose Link to comment Share on other sites More sharing options...
Alan Ambrose Posted October 26 Author Share Posted October 26 @PNAmble - are you saying grid supplied PV will get super cheap v soon? Link to comment Share on other sites More sharing options...
SteamyTea Posted October 26 Share Posted October 26 16 minutes ago, Alan Ambrose said: C being the capacity Without checking I think it is for coulomb, hence the capital C. A coulomb is an amp.second. Link to comment Share on other sites More sharing options...
SteamyTea Posted October 26 Share Posted October 26 18 minutes ago, Alan Ambrose said: Actually maybe that way of reporting capacity is somehow standard for some reason If it is used for load balancing, then peak power can be useful measure. They could just put in both quantities i.e 1 GW, 300 MWh. Link to comment Share on other sites More sharing options...
Iceverge Posted October 26 Share Posted October 26 38 minutes ago, Alan Ambrose said: Mark is a thought leader I too am a thought leader. The trouble is though, that I have no thought followers. Link to comment Share on other sites More sharing options...
SteamyTea Posted October 26 Share Posted October 26 17 minutes ago, Iceverge said: The trouble is though, that I have no thought followers The ones that follow my thoughts end up in trouble. I was chatting to vicar and had a thought. 'when does a cult become a religion?' The stock reply of 'when you get 1 million followers' came out. That was not good enough for me. Link to comment Share on other sites More sharing options...
Dillsue Posted October 26 Share Posted October 26 2 hours ago, Alan Ambrose said: @PNAmble - are you saying grid supplied PV will get super cheap v soon? Be interesting to know where those installing renewables are going to get their ROI if this becomes the case Link to comment Share on other sites More sharing options...
Alan Ambrose Posted October 26 Author Share Posted October 26 >>> Without checking I think it is for coulomb Yes it is, but in another context it's also the battery charge/discharge rate (which may be different). So, a 10 Ah battery which has a 1C charge rate and 2C discharge rate will charge ~10A in 1 hour and discharge at ~20A in 0.5 hour. Link to comment Share on other sites More sharing options...
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