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CharlesGillanders / homeassistant-alphaESS

Monitor your energy generation, storage, and usage data using the official API from Alpha ESS.
MIT License
101 stars 22 forks source link

Sensor for PV Power Forcasting #78

Closed ernstmosch closed 1 year ago

ernstmosch commented 1 year ago

Will see if i can do some first steps on my own.

DavidqStokes commented 1 year ago

I have added the existing Forecast.Solar (https://www.home-assistant.io/integrations/forecast_solar) integration to HA and use the data from that to calculate whether to charge or discharge or do neither with my battery overnight overnight. I then use the AlphaESS integration to update AlphaESS charge/discharge setting around 22.45 hrs every night. The Forecast.Solar forecast isn't perfect (it can get fooled by low cloud or fog coming in from the North Sea - I'm 15km from the coast), but it's reliable enough that I don't look at it most evenings. I reckon it's helped to reduce my overall grid imports an appreciable amount (we now self consume ~90 - 95% of our PV, compared to around 30% before we installed the battery. Around 95+% of our grid use is now on cheaper overnight tariffs)