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PRODID:https://www.diw.de/de/diw_01.c.806339.de/veranstaltungen.html
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UID:diw_01.c.1015040.en
LOCATION:Francine D. Blau Room,DIW Berlin,3.3.002b,Anton-Wilhelm-Amo-Strasse 58,10117 Berlin
SUMMARY:Coping with the Dunkelflaute: Power sector implications of variable renewable energy droughts in Europe
DESCRIPTION:13.00 - 14.00 cet. // Coping with prolonged periods of low availability of wind and solar power, also referred to as renewable energy droughts or "Dunkelflaute'', emerges as a key challenge for realizing decarbonized energy systems based on renewable energy sources. Here we characterize extreme European droughts and investigate the role of long-duration electricity storage and geographical balancing in dealing with such events, combining a time series analysis of renewable availability with power sector modeling of 35 historical weather years. We find that extreme droughts define long-duration storage operation and investment. Assuming policy-relevant interconnection, we find 351 TWh long-duration storage capacity or 7 percent of yearly electricity demand in the least-cost system that can cope with the most extreme event in Europe in our model, which occurred in the winter of 1996/97.    As countries are simultaneously affected, a storage capacity of 159 TWh or 3 percent of yearly electricity demand remains required even in the extreme case of unconstrained geographical balancing. Before and during Dunkelflaute events, we find complex interactions of long-duration storage with other flexibility options. While nuclear power can partially reduce storage needs, the storage-mitigating effect of fossil backup plants in combination with carbon removal is limited. Policymakers and system planners should prepare for a rapid expansion of long-duration storage to safeguard the renewable energy transition in Europe.
DTSTART:20260903T110000Z
DTEND:20260903T120000Z
DTSTAMP:20260107T230000Z
URL:https://www.diw.de/en/diw_01.c.1015040.en/events/coping_with_the_dunkelflaute__power_sector_implications_of_variable_renewable_energy_droughts_in_europe.html
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