Extreme heat spikes air‑conditioning load, depresses wind/solar output and forces Germany to fire up coal and gas plants
Executive summary: A severe heatwave across Western Europe drove air‑conditioning use to high levels while low wind and solar output reduced renewable electricity generation, prompting Germany to temporarily restart coal and gas power plants. The event reveals the vulnerability of renewable‑heavy power systems to weather extremes, raising concerns about energy security, emissions spikes and short‑term market volatility.
Who is involved: French meteorological services, German transmission system operators (e.g., Tennet, TransnetBW), European utilities, policymakers and large‑scale electricity consumers.
Likely next: If high temperatures persist, grid operators may keep fossil‑fuel units online longer or implement emergency demand‑response measures, while market participants watch for price spikes and accelerated investment in storage and flexible generation.
The heatwave sweeping across Western Europe has pushed electricity demand for cooling to high levels while coincident low wind and solar generation reduced renewable output. To avoid shortages, German grid operators have temporarily reactivated coal and gas‑fired units, highlighting the system’s reliance on dispatchable fossil fuels during weather extremes. The episode underscores the need for greater grid flexibility, storage, and demand‑response resources to maintain supply when thermal conditions impair renewables.
Timeline
- — Caldo estremo, una sovrattassa da 12 miliardi l’anno. Confesercenti: “Costa fino allo 0,4% del pil” (la Repubblica — Economia)
- — Canicule : quand les climatisations tournent à plein régime, l’éolien et le solaire fonctionnent au ralenti (Le Figaro — Économie)
Sources
- Canicule : quand les climatisations tournent à plein régime, l’éolien et le solaire fonctionnent au ralenti — Le Figaro — Économie
- Caldo estremo, una sovrattassa da 12 miliardi l’anno. Confesercenti: “Costa fino allo 0,4% del pil” — la Repubblica — Economia