Assistant Professor for Energy Market Design @UniCologne | Reserach Scientist @EWI Energy Economics Institute | Previously Centre for Sustainability @HertieSchoolhttps://bsky.app/profile/oliverruhnau.bsky.socialhttps://bsky.app/profile/oliverruhnau.bsky.social/post/3kpmemsw3uf2eNew Working Paper: Portfolio Effects in Green Hydrogen Production Under Temporal Matching Requirements By Nieves Casas, Reinhard Madlener, and me Link to full paper: https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4747405 Short summary below 👇08 Apr 2024 09:44 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kpmemsw3uf2ehttps://bsky.app/profile/oliverruhnau.bsky.social/post/3km2tsetzis24Recent German survey on accepting onshore wind turbines in residential environment: Without existing turbines (left), the majority has no or small concerns wrt new projects (27 and 41%) With existing turbines (right), the majority fully or tendentially support them (44 and 36%)23 Feb 2024 06:12 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3km2tsetzis24https://bsky.app/profile/oliverruhnau.bsky.social/post/3kltor3e5yd2tWe are offering stipends for a PhD in energy economics ⚡️📈🎓 Beyond 💰, you would benefit from an inspiring environment @WiSoUniCologne and @ewi_koeln and become part of a highly motivated and capable team ☀️🌬️🔋 More info and application by 31 March: https://www.ewi.uni-koeln.de/en/news/ewi-docewi-doctoral-fellowship-stipend-for-research-in-energy-economicstoral-fellowship-forschungsstipendium-energieoekonomik/20 Feb 2024 09:53 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kltor3e5yd2thttps://bsky.app/profile/oliverruhnau.bsky.social/post/3klr45xeon22cDynamic electricity tariffs In Germany, I often hear that, even with smart meters and dynamic tariff offerings in place, not many consumers would choose them. Norway is an impressive counterexample: >90% of households are on spot tariffs19 Feb 2024 09:15 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3klr45xeon22chttps://bsky.app/profile/oliverruhnau.bsky.social/post/3kkxnhhx44w2fInterested in externalities of renewable energy? Check out this (mostly open-access) special issue in Environmental and Resource Economics @SpringerEnviro, edited by @plehmann.bsky.social and Brett Day, to which we had the honor to contribute: https://link.springer.com/journal/10640/volumes-and-issues/87-209 Feb 2024 06:15 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kkxnhhx44w2fhttps://bsky.app/profile/oliverruhnau.bsky.social/post/3kjsobft3kl2jGermany keeps falling short of government targets for onshore wind deployment. But these trends are really promising: +48% in newly installed capacity +78% in newly permitted capacity25 Jan 2024 13:21 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kjsobft3kl2jhttps://bsky.app/profile/oliverruhnau.bsky.social/post/3kicfycehns2fQuo vadis EU ETS price? Nice up-to-date synthesis by Pahle et al. from PIK as part of the Ariadne project https://ariadneprojekt.de/media/2023/12/Ariadne-Documentation_ETSWorkshopBruessel_December2023.pdf06 Jan 2024 08:45 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kicfycehns2fhttps://bsky.app/profile/oliverruhnau.bsky.social/post/3ki5kb3dl4z2cNew evidence on "must-run" electricity generation in Germany When power prices dropped to zero and below for 38 hours in a row at Christmas, 13 GW of controllable generators remained online (5 bio, 3.4 lignite, 2.8 gas, 1.4 coal, 0.4 oil) What are the reasons?04 Jan 2024 10:18 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3ki5kb3dl4z2chttps://bsky.app/profile/oliverruhnau.bsky.social/post/3ki2uml7bet2vThe new year begins with a series of conference submission deadlines 🎉🎓 Here is a 🧵 with those related to energy economics and markets 👇03 Jan 2024 08:46 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3ki2uml7bet2vhttps://bsky.app/profile/oliverruhnau.bsky.social/post/3kgdr7ayawi26Electric vehicles (EVs) have a dark and a light side for the power sector: they may add harmful volatility and provide valuable flexibility. How can we adequately capture both in energy system models? Check out our new publication with @jaruschm.bsky.social on this topic below12 Dec 2023 10:48 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kgdr7ayawi26https://bsky.app/profile/oliverruhnau.bsky.social/post/3kfsk5zuf622jInteresting new preprint on Integrating #DisamenityCosts of #WindEnergy into Energy System Models by Clemens Lohr and colleagues: https://researchsquare.com/article/rs-3586294/v1 My two take-aways...05 Dec 2023 14:27 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kfsk5zuf622jhttps://bsky.app/profile/oliverruhnau.bsky.social/post/3kemri7xvvm2iEnergy transition will require substantially *less* mining than the current fossil system Yes, we need more metals (copper, nickel...) but this increase is overcompensated by a decrease in coal mining New research at Joule Free author link: https://authors.elsevier.com/a/1h%7EXc925JENmBL20 Nov 2023 13:57 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kemri7xvvm2ihttps://bsky.app/profile/oliverruhnau.bsky.social/post/3kef4rkjza22wPlanned vs. optimized electrolyzer locations This is why we need to split the bidding zone (among other reasons) Comparing new data by EWI Köln (https://www.eon.com/de/hydrogen/h2-bilanz.html) with study by Frederik vom Scheidt et al. (https://www.sciencedirect.com/science/article/abs/pii/S0301421521005930)17 Nov 2023 12:57 +0000at://did:plc:75krpgi6oksgb64ib47fcg7c/app.bsky.feed.post/3kef4rkjza22w