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Data studies answer one question from open data and publish the dataset. Explainers cover the ideas behind them. Every piece cites its sources and states its limits.
Original analysis of public Hungarian power data, each with its dataset.
4,430 MW
evening ramp, April to September 2026
On April to September days, midday residual load fell from 3,958 MW in 2020 to 843 MW in 2026, so the evening ramp of the Hungary duck curve grew to 4,430 MW.
1,322 MW
average midday net export, April to September 2025
Hungary electricity imports turned into net exports at April to September middays from 2023, while evening and night imports rose.
894
negative quarter-hours, Oct 2025 to Sep 2026
Negative electricity prices in Hungary came in 894 day-ahead quarter-hours in the first year of 15-minute trading, 88.9% of them between 10:00 and 16:00.
-0.41
monthly correlation of solar and wind, 2020 to 2025
Wind solar complementarity in Hungary is mostly seasonal: the monthly output correlation is -0.41, but only -0.15 once the seasonal cycle is removed (2020 to 2025).
How the technology and the metrics work, with sources and worked examples.
Explainer · PV performance
Explainer · PV performance
Explainer · Grid and system
Explainer · Solar output
Explainer · PV performance
Explainer · PV performance