@L__Bow @danc00ks0n This is wind speed limits going into Effect at Walney and then easing. You see power roll out and then back on as speed slow down. The ones posted above are significantly more abrupt.
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Designing Better Artefacts
14K posts
Designing Better Artefacts
@pmholling
Senior Lecturer in Aerospace Engineering, expert on uncertain decision making- Retweets are things I find interesting, but do not, always reflect my opinions.
Manchester, UK Katılım Kasım 2011
346 Takip Edilen445 Takipçiler
@danc00ks0n In that post he mentions "transmission curtailment". Seagreen is curtailed loads because the network capacity hasn't been built for it yet. I'm not clear on whether that's what his post today is showing.
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As Storm Éowyn tore across the UK today, exposed wind farms held steady as the top contributor to our grid the whole time (green line). Detractors love to talk about "windmills" shutting down when it's too windy, but at national scale they perform through the fiercest storms
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@whippletom @freddiesayers @DavidRoseUK @neso_energy LAGA-1, Langage did similar from 06:00, operating at 800MW from 09:00ish to about 23:00, when it desynced for a brief period. Neither were at all related to anything in the periods in ‘question’.
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@whippletom @freddiesayers @DavidRoseUK @neso_energy So finally got back to looking at this, as intermittent.energy has data past 08/01 now. PEHE-1 ramped up in the morning from about 04:50 and ran at 200MW until 10:40ish, then went to over 1.1GW from about 13:00 until 21:25 when it had its ‘event’.
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@Anapecalleddave One of the downsides of processes like 6-sigma is they are very good at ensure an error is common across the entire fleet.
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@Anapecalleddave Obviously combustion plants has slightly more predictable output. However, the trends going forward would seem to have been towards a more homogenous fleet. Given other trends we would like have walked into more of the French nuclear and PW GTF issues.
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I've seen it repeatedly cited here that the capacity market costs are a cost of renewables because it is back-up. This to me is an undue simplification of energy market design. Imagine the long-run (total) cost of solar or wind was under the short run (fuel) cost of gas >
Kathryn Porter@KathrynPorter26
@Anapecalleddave @PeterSmartpower @janrosenow In the UK it was introduced to make sure there was enough generation to back up when there's no wind and sun. That is a fact. In the UK the Capacity Market is a cost of renewables
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@whippletom @freddiesayers @DavidRoseUK @neso_energy It’s weird on BMRS you see the return of pole 1 on one chart but not another. In the generation by type it goes to full 1.4GW from 17-19, but in flows by interconnector it was showing. The dashboard will give you bad data for some calls
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@whippletom @freddiesayers @DavidRoseUK @neso_energy I may be misremembering but I think some of those notices have been failures to sync. Which is believable if the plants only operate intermittently, which looking at the data for Peterhead seems to be the case of late (and many other CCGT plants).
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@whippletom @freddiesayers @DavidRoseUK @neso_energy Though it looks like there might be data issues post 03/01. So don’t count on any numbers for more recently.
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@whippletom @freddiesayers @DavidRoseUK @neso_energy Found it. Looks like the last time T_PEHE-1 generated was at midnight on 04/01.
intermittent.energy/d/bdkf9e861xu6…
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@whippletom @freddiesayers @DavidRoseUK @neso_energy Plus the continued loss of 2GW of interconnectors due to cable faults. One of which has been offline for almost 4 months and won’t likely return before at least 9 February.
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@whippletom @freddiesayers @DavidRoseUK @neso_energy It is possible to pull the metering for each BMU by time and see when and for how long each unit was offline. My understanding is both of those returned quite quickly. The big things were the full day unplanned outages at two gas plants (~1.1GW)
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@TechnicalVault @KathrynPorter26 @1233krc @neso_energy The largest cost in recycling is bringing quality material together. For grid scale you don’t have that issue. Technology isn’t there yet, but much of that is because it hasn’t been asked for until now.
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@KathrynPorter26 @1233krc @neso_energy If you're not recycling grid scale batteries for the metal inside them then something has gone wrong with the market. It seriously should not be cheaper to dig raw lithium out the ground and refine it than refining it from what is essentially just high quality raw material.
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Yesterday the GB power market came within 580 MW of demand control or a blackout on what was the tightest day since 2011 or before
@neso_energy issued its first Electricity Market Notice of the winter and third (quickly cancelled) Capacity Market Notice
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@Simonetheboss2 @paul_winginit Yup, up to 302 on each flight. The ATL-MCO link was mental back then.
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@Simonetheboss2 @paul_winginit DL had two L1011s going ATL-MCO within 5 minutes of each other at one point in the 1990s.
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@Anapecalleddave @cristoforestman @JavierBlas They could also use it to connect the northern regions to NO2. On Thursday the interconnectors to the continent were all maxed out as were the intra NO connections. However, demand in the North was << than gen capacity.
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@cristoforestman @JavierBlas You can just cap domestic prices (Norway even already does this!) and use export revenues to fund the differential. That involves the state capturing some of the rent but this is hardly a new thing (see obsolescing bargain).
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Norway is (very) unhappy that its electricity prices are soaring due to demand from Denmark, UK and Germany via inter-connectors when the wind isn't blowing.
“It’s an absolutely shit situation,” said Norway’s energy minister Terje Aasland.
ft.com/content/f0b621…
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@Anapecalleddave Most of the standing charge, on electricity is in DNO/day charges. This tends to be higher in less ‘used’ regions where there is extra capacity, but the equipment still needs to be maintained. Though some is definitely from depreciation.
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@Anapecalleddave The fact is that some things cost purely by time not by usage. If you charge for those based on usage not time you are forcing a cross subsidy from high users to low. That won’t necessarily get the outcome you want.
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This basically offers a subsidised electricity connection to second home owners. Low usage does imperfectly correlate with low income but this is better managed through targeted rebates. We could call it the "winter fuel allowance".
Martin Lewis@MartinSLewis
NEWS: @Ofgem announces firms to offer a 'no standing' charge Price Cap as well as the normal one. Here's my official MSE comment on it... "While today's Ofgem announcement on standing charges isn't the best possible outcome, it's the best outcome that Ofgem can deliver unilaterally, to do more would require government intervention – and that hasn't happened. "Standing charges are a £338 a year poll tax on energy bills, a moral hazard disincentivising lower users from cutting their bills. They also punish customers that only use gas for central heating in winter, many of whom are elderly, by making them pay for every day in summer. It's by far the biggest single subject of complaint I get from the public about energy bills. "The best outcome would be to slash standing charges within the Price Cap, yet as that'd mean the cost of each unit of energy needed to increase, it'd require the Government to put in special support for vulnerable high energy users – such as those charging electric wheelchairs, or those with illnesses that require a very warm home. That hasn't happened (yet?). "Instead, I'm pleased its alternative path follows our submission suggestion of a dual Price Cap, one as now, a 'higher standing charge, lower unit rate', and a new 'no standing charge, higher unit rate' version that'll benefit lower users. "Yet the Price Cap was designed to be a safety-net tariff for customers who don't or can't engage in switching. The problem with presenting a choice of Price Caps is many vulnerable people won't make that choice. So I will be making representation to Ofgem to ensure firms are mandated to default lower-use Price Cap customers on to the no standing charge tariff – or at least do that for those on the Priority Services Register."
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