HomeKit HomeKit Trigger - Solar Production or Whether it's Sunny?

[Benjer]

We have solar panels, and I change our Ecobee thermostat based on whether it's sunny. (Because the rate our power company gives us for electricity sent to the grid is less than half the rate we pay for electricity, it's cheaper to pre-cool our home during peak solar production when it's sunny, even if we're not home at the time.) I'm interested in a way to use HomeKit to raise the temperature on our thermostat when either 1) our solar production falls below a certain threshold or 2) if it's overcast. Our inverter is a Sunnyboy, and as far as I know, does not integrate with any tools to make this happen. Are there any products I could use to make this happen? I've done a quick search and some HomeKit products such as the Philips Hue Dusk-to-Dawn Outdoor Motion Sensor has a light sensor, but could it measure whether it's sunny or overcast?

Alternatively, I know I can use IFTTT to trigger an action when it is overcast, but I'm not sure how accurate that might be at a specific address.

 

[pup]

I know that you can set the light/dark sensitivity thresholds for the hue sensor but unless they’ve added it to the app, you have to use a third party app to do so. Otherwise I guess you’d just have to experiment with placement.