Solar generationSolar
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Will there be
free power
tomorrow?
Our groundhog reads the day-ahead
power auction, the wind, the sunshine
and tomorrow’s demand. Then predicts.
READY FOR THE REVEAL
Ready?What does the hog say?
Tomorrow’s prediction is ready to reveal.
Beta forecast • a prediction, not a confirmed EDF offer
Tomorrow’s forecast factorsTomorrow’s Forecast Factors
A few things our groundhog keeps an eye on.
Wind generationWind
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Grid demandDemand
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Weather outlookWeather
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The week aheadThe Week Ahead
Where the hog thinks free hours might fall. The further out, the shakier the guess. Beta · unproven
Recent outcomesRecent Outcomes
What the day-ahead auction actually gave. Live data
Who built this?
A one-person project, built in the evenings.
I’m Steve Kirtley, a developer and EV driver in Wales. I switched from Octopus Intelligent Go to EDF Go Electric in 2026, found there was no way to get EDF into Home Assistant, and built one. It runs my own house: battery, EV and heavy loads all follow EDF’s off-peak window, smart charging slots and free electricity sessions through that integration.
Power Perks Predictor grew out of the same work. Once the integration was tracking EDF’s free sessions, the obvious next question was whether they could be seen coming. Everything here reads public data: the N2EX day-ahead auction, national grid wind, solar and demand forecasts, and weather models.
More from me: EV Tariff Guide · EDF Home Assistant integration · GitHub
i Beta. Unofficial prediction tool, not affiliated with EDF Energy. Actual Power Perks are set by EDF.