Fraunhofer ISE
German research institute operating the energy-charts.info power price transparency platform.
Fraunhofer ISE's energy-charts.info platform supplied the wind and solar generation figures behind Germany's clean spark spread reversal on 31 July 2026, the latest instance of this desk citing its regulator-sourced power data rather than a commercial reseller's.
Last refreshed: 31 July 2026 · Appears in 1 active topic
Why does this desk use Fraunhofer ISE's API rather than raw exchange data?
Timeline for Fraunhofer ISE
Supplied the quarter-hourly price and generation data
European Energy Markets: Same wind, two prices: solar sets gapPublished the German day-ahead price and generation series
European Energy Markets: German gas plants back in profitMentioned in: German spark spread hits cycle worst
European Energy MarketsPublished the hourly day-ahead price data underlying the spread reading
European Energy Markets: French heat flips the FR-DE spreadBackground
The Fraunhofer Institute for Solar Energy Systems is a German applied-research body headquartered in Freiburg. Alongside its core solar and hydrogen research, it operates energy-charts.info, a public platform that aggregates power price and generation data rather than generating its own readings.
The platform draws Germany's day-ahead and balancing figures from SMARD, the Bundesnetzagentur's market data register, and cross-border generation and flow data from ENTSO-E, the European transmission operators' association. Both feeds are republished through a single API under a CC BY 4.0 licence, so the underlying figures are regulator-derived rather than aggregator-sourced.
That distinction is what gives energy-charts.info its standing as a citation source: a price or generation figure pulled through it traces back to SMARD or ENTSO-E rather than to a commercial data reseller, which is why this desk uses it for German and French power-price comparisons rather than pricing services covering gas or carbon.