Uniper calls flexible gas plants essential as Germany's dunkelflaute problem sharpens

Uniper calls flexible gas plants essential as Germany's dunkelflaute problem sharpens Germany's dominant utility says dispatchable capacity is non-negotiable as Europe's renewable surge fails to reliably cut emissions. Germany needs more flexible baseload power plants, not fewer, Uniper said on Monday (2026-06-01), citing the recurring threat of dunkelflaute — prolonged spells of low wind and solar output that expose the structural weakness in the country's energy transition.⁵ That argument matters because it lands at an awkward moment. Europe added more than 70 GW of renewable capacity in 2025, led by Germany, Spain and France, yet analysts at Montel's EnAppSys, EQ and Energy Brainpool found that only Finland had successfully combined green buildout with actual emissions reductions. The rest of Europe is adding wind and solar without consistently decarbonising its power sector.² Dunkelflaute is not a fringe weather event in Germany. These periods, when cloud cover and low wind combine to suppress both solar and wind generation simultaneously, leave the grid reliant on whatever dispatchable capacity remains online. Uniper's position is that no realistic near-term volume of batteries or interconnectors bridges that gap safely.⁵ The debate is live in Berlin. Plans by the economy ministry to ease power grid bottlenecks drew a warning from industry figures who told Montel that the network package shifts investment risk heavily onto developers, threatening a sharp slowdown in clean energy spending before the infrastructure is ready to absorb it.¹ Uniper is not simply defending existing gas assets. The company demolished the cooling towers at its Gelsenkirchen-Scholven coal plant on May 19 (2026-05-19) — two 114-metre structures razed in a controlled demolition — as part of a broader pivot away from coal. A new combined-cycle gas turbine is planned for the same site, designed to be hydrogen-ready and eventually integrated into Germany's hydrogen network.⁴ The Scholven replacement signals the shape of Uniper's bet: gas-fired flexible capacity now, hydrogen-capable infrastructure later. The utility is already trying to line up hydrogen supply. It is seeking buyers for output from its planned Wilhelmshaven ammonia-to-hydrogen import terminal, which would receive up to 2.6 million tonnes of ammonia per year, crack it into roughly 350,000 tonnes of hydrogen, and feed that into Germany's 9,000 km core hydrogen network once operational.³ On the supply side, Uniper has signed an offtake agreement for up to 500,000 tonnes of green ammonia per year from AM Green's 1.3 GW project in India. The Wilhelmshaven site could also host a 1 GW green hydrogen production plant alongside the import terminal. Under Berlin's green hydrogen strategy, imports are expected to meet up to 70 percent of Germany's 2030 hydrogen demand.³ None of that infrastructure exists yet. The terminal has no confirmed buyers. The hydrogen network buildout is years from completion. Between now and then, flexible dispatchable capacity — running primarily on gas — is what keeps the lights on when solar panels produce nothing and turbines stand idle. Uniper's argument is essentially that Germany cannot afford to close that option early.^5,3 The cross-sector implication is direct. Less dispatchable gas-fired generation reduces coal-to-gas switching options, which tightens the relationship between ICE Endex TTF front-month prices and ICE EUA Dec-rolling contract pricing — any squeeze in gas supply or spike in TTF raises the switching threshold and can push EUA demand higher as the marginal generator reverts to coal. Germany's grid balance question is an EUA pricing question too.⁵ What to watch: whether the Wilhelmshaven terminal secures anchor offtake contracts that would justify a final investment decision, and whether Berlin's network package is revised enough to keep renewable developers from pulling back capacity additions. If green investment slows while flexible gas capacity stays thin, Germany's dunkelflaute exposure deepens — and with it, the winter supply risk premium in ICE Endex TTF front-month prices.^1,3