Update 12/3/2021 – Draxendedcommercial coal generation at its two remaining coal unitson Friday 5 March。The firm holds capacity market contracts for winter 2021-2022 and says the units will remain available if called on.
There are two remaining UK coal plants, West Burton and Ratcliffe. West Burtonwithdrewfrom the capacity market for winter 2021-22 while Ratcliffe secured a 2021-22 contract for its fourth coal unit.
Update 6/5/2020 – The owner of Kilroot power station in Northern Ireland haswonacontractto supportconversionof the plant to burn gas instead of coal by winter 2023. Only Ratcliffe and West Burton are yet to announce closure plans.
Update 27/2/2020 – Drax has announced it willclose its coal unitsafter September 2022 and “does not expect to use coal” after March 2021.
Once Drax closes its coal units just three coal plants will remain on the UK system: Ratcliffe, West Burton and Kilroot in Northern Ireland.
Update 1/8/2019 – German firm RWEis to closeits last UK coal-fired power station, the 1,500 megawatt (MW) Aberthaw B in Wales, at the end of March 2020.
Just four coal plants will remain on the UK system. These are Drax, Ratcliffe, West Burton and Kilroot in Northern Ireland. The map and tracker have been updated.
The news follows SSE’sannouncementin June that the remaining 1,500MW at Fiddler’s Ferry would close at the end of March 2020. Kilroot, which had been due to close last winter, has now beenboughtby Czech utility firm EPH.
Update 8/5/19 – Great Britain has goneseven days straightwithout using coal to generate electricity, for the first time since a public power system was built in the late 1800s.
The coal-free streak began at 13:24 on Wednesday 1 May, according to National Grid. It is expected to continue until early evening on Thursday “at the earliest”, according to consultancyEnAppSys。
Great Britain has now gone1,139 hours without coalso far in 2019, Carbon Brief analysis shows, equivalent to 47 days or more than one third of all hours in the year to date. By this point in 2018, just 417 coal-free hours had been recorded.
Coal now suppliesless than 5%of the electricity generated in the UK, down from 40% as recently as 2012. Generation in 2019 to date isdown 90%compared to five years ago and nearly two thirds relative to output in 2018.
注意记录coal-free条纹是选举ricity generation in Great Britain only. Northern Ireland is part of a separate integrated grid on the island of Ireland. The UK imports electricity from countries including Ireland, the Netherlands and France, all of which sometimes burn coal to generate power.
Update 8/2/19 – The map and tracker spreadsheet has been updated to reflect the latest developments.
EDF Energyannouncedthat Cottam in Nottinghamshire is to close on 30 September 2019 as it lackscapacity marketcontracts beyond that date, but that West Burton in Lincolnshire would remain open until at least September 2021. SSE’s Fiddlers Ferry in Cheshire also lacks capacity market contracts, but was not mentioned in the company’s latesttrading statement。Another SSE update is due at the end of March. Note that only three of four units at the plantremain online。Drax in Yorkshire has completed the conversion of a fourth unit to burn biomass. Lynemouth in Northumberland has reopened as a biomass plant. Kilroot in Northern Ireland has been given a temporary one-yearstay of execution。Uskmouth in Wales is offline pending conversion to burn waste. After Cottam closes, there will be six coal plants remaining in the UK, totalling 9 gigawatts (GW). The UK had 25GW of coal capacity in 2012 and 29GW in 2010. Coal generation has fallen from 143 terawatt hours (TWh) in 2012, meeting 40% of the UK’s needs, down to17TWh in 2018(5%).
The UK plans to phase out unabated coal-fired power stations by 2025, as long as security of electricity supplies is maintained.
Theproposal, launched to great fanfare in the run up to the Paris climate summit, wasconfirmedon 5 January 2018. However, coal use is already falling rapidly, supplying just 7% ofUK electricity in 2017。
The UK’s coal use fell by a fifth during 2014, tohistoric lowsnot seen since the birth of the industrial revolution. Demand fell by another 22%during 2015and is down by two-thirds year-on-year in2016to date. Across six months of this year,solar generated moreelectricity in total than did coal.
The economics for coal have deteriorated significantly. Fallinggas pricesand higher carbon taxes have combined to leave coal generators facingincreasing losses。Coal suppliedzero powerto the UK for the first time ever in early May。Coal generation across 2015 was thelowest自1950年代初和2016甚至更低。During 2016, coal prices havesurged, though high peak power prices have provided opportunities for remaining coal plants.
Coal closures
Three large coal plants have closed during 2016: Longannet, Ferrybridge C and Rugeley (see map and tables). Eggborough and Fiddlers Ferry had planned to close, but have put those plans on hold. (Update 2/2018: Eggborough will close after September 2018).
Around 4 gigawatts (GW) of capacity has closed this year, leaving 15GW able to operate today. Together, these remaining plants emitted 53m tonnes of CO2 in 2015, around 11% of total UK greenhouse gas emissions that year. As well as reducing greenhouse gas emissions, this year’s closures will reduceair pollution。
It’s worth noting that 8.4GW of coal capacity hasalready closedsince 2010. Coal is usually thought of asbaseloadgeneration that operates constantly day and night, but most coal plants were generating power less than 10% of the time inMayandJune, according toAurora Energy Research。德拉克斯和Aberthaw我刚刚超过50%n June while Rugeley, now closed, touched 50% in May.
After long periods of much-reduced running, a number of coal plants have ramped up operation as the UK moves into late autumn. Aberthaw B, for instance, has been running close to capacity.
The plants that have shutdown or will operate reduced hours are slightly older than those still expecting to stay open. However, all but two of the remaining stations are more than 40 years old.
The cost of maintaining ageing equipment wascited by SSEin explaining its (now reversed) decision to consider closing Fiddlers Ferry. From this year, plants face tightening air pollution rules under theEU Industrial Emissions Directive(IED), though variousexemptionsandtransitional arrangementsare in play.
Given unfavourable market conditions, the decision over whether to keep coal plants running at a loss is complicated by two separate policies designed to keep the lights on.
Thecapacity market, due to kick in from winter 2017/18, will pay power stations a retainer to be available during winter evenings. It pays a fixed price for each kilowatt of capacity, up to the level of expected peak demand.
The auction for 2019/20 will pay £18/kW for a total of 46GW, meaning thecapacity marketwill cost nearly £1bn in 2019 alone. Several coal plants have secured capacity market contracts worth£139m in 2019, meaning they should keep running until at least the end of this decade (see table).
However, Fiddlers Ferry considered closing despite having secured a contract for 2018/19. It failed to win a 2019/20 contract. It seemed to havedecidedthat paying a £33m penalty for breaching its 2018/19 agreement would be cheaper than the losses it faces before then.
That decision looked to have dealt a blow to the credibility of the capacity market. It added to pressure for reforms and a sense that the scheme isactively underminingsecurity of supply. The government now plans to strengthen the capacity market and bring it in a year early, fromwinter 2017/18。
SSE’s latestannouncement, at the end of March, means the plant will remain open for winter 2016/17, but still leaves a question mark over whether it will fulfil its 2018/19 capacity contract. The station has now also prequalified for capacity market contracts in 2017/18 and 2020/21, raising the chance that it will remain open for longer.
A second scheme known as the National GridSupplemental Balancing Reserve(SBR)是为了获得供应before the capacity market kicks in. It is paying a small amount of reserve capacity to remain on standby, operating only when supplies are tight.
For winter 2016/17, National Grid is paying £34/kW for 3.6GW under the SBR, at a total cost of £122m. While the per-kW cost isnearly doublethe capacity market’s, the overall cost is lower.
Two of the coal plants that planned to close — Eggborough and one unit at Fiddlers Ferry — have secured SBR contracts for winter 2016/17, offering stays of execution on their eventual closure. It’s worth repeating, however, that these units will only operate on request from National Grid.
There was anexpectationthat the 2016/17 SBR might need to be enlarged now that additional coal plants are due to close. However,current ruleslimit the size of the SBR to 3.7GW, against 3.6GWcontractedto date. Someanalystsbelieve there is no need to expand the SBR.
It’s possible that more coal plants will opt to retire next spring. Aberthaw, Cottam and West Burton were all seen as at risk of closure due to unfavourable market conditions, according to a FebruaryReutersarticle。Indeed, Cottam and West Burton, both owned by French utility EDF, have defaulted on three-year capacity market contracts they held, having decided not to carry out upgrades. The plants could still bid for further one-year contracts.
Fearsthat the UK will be unable to maintainsecure electricity suppliescould spell trouble for the government’s coal phase out plans. The government wantsnew gascapacity to fill the gap, though there isdisagreementover the scale of the requirement and the impact on UK climate goals. Investors are also not currently attracted to building new gas plants in part because the capacity market price is not high enough.
Note – Market data on plant operating hours is sourced from the Aurora Energy ResearchEOS data portal。
Update 2/2/18 -The map and tracker spreadsheet has been updated to reflect the latest developments.KilrootandEggboroughcoal-fired power stations have announced plans to close in May and September 2018, leaving seven coal plants remaining in the UK.Drax will converta fourth unit to burn biomass. This is expected to shift biomass generation to winter but only raise total biomass output by perhaps 1%.
Update 9/6/16 – Rugeley power station in Staffordshire hasclosedearlier than expected. It had been due to run until the end of June.
Update 27/4/16 – Aberthaw B power station in Wales is to runreduced hoursfrom April 2017. We have updated the map and tables. Note also that Drax, once the UK’s largest coal plant, has said it could stop burning coal withinthree yearsif it received extra subsidies from the government to burnbiomassinstead.
Update 31/3/16 – Fiddlers Ferry has decided not to close. One of its four units already had a contract to be available in winter 2016/17. Owner SSEsaysa second unit has won a contract to provide ancillary services to National Grid for the next year. The third and fourth units will remain connected to the grid and may be entered into the capacity market in for winter 2017/18. We’ve updated the text below to reflect this and other recent developments.
Update 24/3/16 –Longannet, Scotland’s last coal-fired power station, is switching off today.Ferrybridge Chas also stopped generating power. We have updated our map.