Post AZ34dB7zJMOUbmymDQ by Havant_Enviro@mastodon.sdf.org
(DIR) More posts by Havant_Enviro@mastodon.sdf.org
(DIR) Post #AYztLb1WbwAgjxURf6 by Havant_Enviro@mastodon.sdf.org
2023-08-22T18:28:16Z
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Batteries replace decommissioned power station site at Ferrybridge.Planning permission is also given for another battery set up at Fiddler's Ferry.https://renews.biz/87626/sse-renewables-breaks-ground-at-ferrybridge-bess/
(DIR) Post #AYztLbupIKPJVTMbrM by publius@mastodon.sdf.org
2023-08-22T18:31:42Z
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@Havant_Enviro 150 MW and 300 MWh is not much when you compare it with the actual energy needs of Scotland. Ferrybridge C was 2 GW and operated with a high load factor.
(DIR) Post #AZ07ESCGQf42hC09vk by Havant_Enviro@mastodon.sdf.org
2023-08-22T21:07:19Z
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@publius Batteries or any storage isn't intended to be a generation source, it's just that the old sites are being used for a new purpose.The generation will come from renewables and probably some nuclear.In particular lithium ion batteries are mainly targeted for frequency stabilisation on the grid not long term storage.
(DIR) Post #AZ2f4wJVO0DdxlwXtg by publius@mastodon.sdf.org
2023-08-24T02:36:00Z
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@Havant_Enviro The point is, you still need those 2 GW of generation somewhere. In fact you're likely to need MORE gigawatts of generation, if you have heat-pump and battery-electric-car mandates.The more systems like this you need to stabilize the grid (which thermal power stations do at no extra charge), the less generation you can afford. The more transmission lines you need, because your new generation is dispersed and far from the load, the less generation you can afford.
(DIR) Post #AZ34AtVlDRDJrabzkm by Havant_Enviro@mastodon.sdf.org
2023-08-24T07:16:46Z
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@publius "The point is, you still need those 2 GW of generation somewhere. "I said that in the reply.Most coal fired power stations in the UK have been decommissioned and the land reused."need MORE gigawatts of generation, if you have heat-pump and battery-electric-car mandates."We need more power (electricity), but less energy.Total energy consumption would drop by about 1/3 if all land transport is electrified and heat pumps are deployed.
(DIR) Post #AZ34dB7zJMOUbmymDQ by Havant_Enviro@mastodon.sdf.org
2023-08-24T07:22:07Z
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@publius "The more systems like this you need to stabilize the grid (which thermal power stations do at no extra charge),"Storage and renewables are one system.Thermal power stations have a different model of economics for running them to renewables because they need fuel every second of the day.So a direct comparison of capital or build costs is false economics.
(DIR) Post #AZ3ncnVtbYwlJ6M2nA by publius@mastodon.sdf.org
2023-08-24T15:46:26Z
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@Havant_Enviro Total energy consumption might drop, but that energy has to be provided in the form of electricity, rather than as fuel ― which means that you need much more electricity, and likewise electric generating and distributing plant.It's not entirely apples-to-oranges, but it's a comparison between two very different things.Burning gas in electric power stations with an average efficiency of about 30%, to run heat pumps with a gain of 3:1, is no gain on burning gas in the home.
(DIR) Post #AZ3ouPIQTz3bMi0z5M by publius@mastodon.sdf.org
2023-08-24T16:00:50Z
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@Havant_Enviro For fission power, variable costs are much a smaller proportion of total costs than for combustion. A reasonable comparison is thus possible.A wind installation has an operating life of 12 to perhaps 20 years, and in a favorable situation, will achieve about 30% annual load factor.The nuclear plant can operate for 40 to 60 years, at a load factor approaching 90% (decreasing of course as you have more nuclear on your system). And it can deliver heat directly to towns.
(DIR) Post #AZ3q74CoJA2HflzMUy by Havant_Enviro@mastodon.sdf.org
2023-08-24T16:14:19Z
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@publius More electricity is needed, that is what I stated.Burning gas in power stations isn't a long term option.The UK needs to produce about 800 TWh of electricity per year from low carbon sources.But apart from that UK CCGT power plants are 50 to 60% or more efficient.
(DIR) Post #AZ3qP6wWrwu1NJyeye by Havant_Enviro@mastodon.sdf.org
2023-08-24T16:17:36Z
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@publius 30% capacity factor is only for onshore wind, you are being deliberately misleading by quoting that.Offshore wind which is and will always be more prevalent is far higher.Nuclear power has a place but no one wants it in their back yard so in the UK will be limited.Nuclear is also extremely expensive and will only get more expensive.