欧洲电力行业联盟欧盟水电：通过大规模提供灵活性确保供应安全

3 main hydropower plant types Run-of-river hydropower: Channel the water of a river through turbines, and thus, supply a continuous amount ofelectricity linkedtothe river's discharge.However,these plants can provideflexibility servicesina certainrange. Reservoir hvdropower: Accumulatewatercuringperiocsofaoundance.Thesestratedicwaterreservesenableoptimisedoperationforcurationsrangingfromweeksuptoavear,irrespectiveofprevailingnatural discharge conditions.Conseguently,reservoirhydropower stands as the predominantrenewablesourceofflexiblepowergeneration.addressingshort.medium,andlong-termflexibilityrequirements Pumpedstorage hydropower: Provideelectricitystoragebyutilisingwaterwhichiscycledbetweenalowerand upperreservoir.Duringperiods of surplus power,pumps act as flexible absorbers,lifting waterto theupperreservoir.Converselywhenelectricitydemandpeaks,waterisreleasedfromtheupperreservoir,facilitatingflexibleelectricitygeneration.Thestoragecapacityvariesdepending onthe system'ssizerangingfrom short-fermto long-term,potentially spanningseveral months. In many hydropower schemes these different plant types are strategically combined andoperated'to harness the maximum energy output from the available water while keepingthe environmentalimpact to a minimum. Flexible generation and storage capacity is increasing all over Europe Mauranger IIl (Norway)Reseryoir Hp Kihtai ll [Austria] - Resarvoirand pumped storage HP Rengard [Sweden) -Reservoir HP nvcstmont:1.1 bnYear of cornpletion:2026Capacily:+130 MWDetei s:In addition to a reservoirwith natural inflow, a ngupumped storage HPisbeing built and integratedinto an existing HPscheme. Invostmont:3.8 bnYeEr o completionPhase 1: 2030Phase2:2Q40Capacity: 29 MwPhase 1: +300 Mw (100%)Phase 2: +300 Mw (100%)Details:By making the mostout ofanexisting reservoir, an operatingHP is extended by a new one,tripling the flexible capacity. Investment:100millionYear caf comp e-ion:2024Capecity: 36 Mw+35 MW (100%)Datails:By adding anotherturbine, the capacity of anexisting HP was doubled,resulting in greaterflexibility of the plant itselfand dounstream ones. Cierny vah (Slovakia] .Pumped Storage HP Frades Il (Portugal)Pumped Storage HP Limberg l [Austnia]Pumped Starage HP Invcstmont:500millionYesr of con'pleticr:2025Capacily:+480MWDerails:An exiting scheme ofreservoir and pumpedstorageHPsisextendedbyanepumpedstorage HP daubling thepumping capacity. Investmont:173 millionYeer of ccmpleticn:2030Capacily: 735 Mw+70MW (10%)Derails:To increase the flexibility ofan existing pumped storageHP,two of six units will beupgradedtovariablespeedtechnology and hybridisedwith battery storage. Yaar cf comp c-io1:2017Cape city:MW 66L+Dela lsBy utilising existingreservoirs and employingvariable speed technology.the new pumped storageHPcanmeetflexibilityrecuirements both ingeneratian and pumpingmode. 5 Essential calls to enhance hydropower flexibility Recognise the diversity of hydropower - run-of-river, reservoir and pumped storage plantsproviding flexible renewable electricity generation and storage to ensure an efficient andreliable power system for decades. Tofully exploit the potential of hydropower,a technology-neutral, stable regulatoryenvironmentis neededto strengthen confidence ofplantowners,operators and investors. f is crucial thatfuture marketinterventions are avoided,and market principles maintained taenableefficientdispatchandstorage of electricifyti.e.,flexible sourcesareactivatedwhenthey offer the greatest value to the electricity system]. Swift implementation of the provisions in the Clean Energy Package and Electricity MarketDesign will contribute to an accurate assessment of different flexibility needs, long-termvisibility forinvestments and incentives tofoster more participation offlexibility services. while public support mechanisms can provide short-term signals and catalyse essentiallong-term investments in hydropower, they must align with existing regulations, applying fornew and existing assets and allowing flexible plants to maximise their incomes on variousCmarkets. References: European Commission, Ccmmissior Staff working Document. Implementing the REPowerEL Actisn: EUR: - 52022S00230 - EN - ElR-Lexleuroe.sJ:sustairsble, just nd prosperous scciety, limpart Assessiment Report Fart ll: hllpesr:.eurooesrehmr =1oc-95d9-0aa/5oda1.0001.02iL0s6format-FL:3 Furcpean Commission, voint Research Centre, Koo en, D., De Felice, M. B.isch, s. Fiexiolity reruirements and the rcle f stcrage in futureEgroriegr pcwer systers. jb lications Ofice of the Eurooeen Unicr. 2023. htps://cate.eurcpa.euidoi/10.2760/384443: Photo credits: Graphichydropower planttypos -Oosterrcichs EncrgicMauranger Il - StatkraftFrades II - EDPRengird-SkellefteaKraftLirnbergIIVERBUNDKuhtai II - TIWAGCierny Vah- Slovenske elektrarne Contact: Adrian LINLERMUIHAdvisorllydropower&SociaSustairabilityalinderruthoeurelectric.org