Hi all, I would like to use surplus solar power to heat the water. The idea is to check the met.no cloud cover forecast for the next 3 hours and if they are "sunny" raise the target temperature of the water boiler, so that it heats the water more than on cloudy days.
To be able to access the forecast values, I was trying the "Example template sensor using get_forecasts" on https://www.home-assistant.io/integrations/weather/, but it doesn't work. I copied the example code into a Helper-Template for a sensor but I'm getting "Translation error: MALFORMED_ARGUMENT". I can save it but the hourlyforecast variable isn't available. I'm not sure if this is even the right approach?
#met.no forecast in automation - need help
jovial oak
tawdry musk
Is there a particular reason why you aren't using the Forecast.Solar integration? It's quite useful for doing exactly this kind of thing
Or even just raising it when your export to grid is above a certain amount and dropping it when it falls?
jovial oak
Thank you for pointing out Forecast.Solar. Just installed it and built the automation using production_next_hour. If over 3000 (I assume the unit is Wh?) I set the desired temp to 50.
How can I tell the automation ELSE to set the temp to 42? (As in if ... else ...)
OK found it already.
Thanks! Tomorrow I'll know if it works 🙂
tawdry musk
Heh yeah, you beat me 🙂 good luck
Units should be shown in the entity but I think by default they are in kWh
Personally for stuff like this what I do is:
Trigger Grid Export > some number: Turn on my energy dumping method
Trigger Battery charge < 95%: Turn off my energy dumping method (though this could be some other, lower grid export number)
jovial oak
That's what I'm doing with an electric towel/bathroom heater, since I can switch that on and off any time. The hot water is made with a heat pump, which I don't want to interrupt once it's running. So I'm modifying its parameters based on the expected energy production and let it do its normal job, without interference.