Today, I enabled the new Energy feature. It’s awesome! I have my smart meter connected, as well as the inverter of my solar panels. And is course, I have enabled the CO2signal integration.
On the energy dashboard, there is a gauge showing the percentage “non fossil energy”. As I understand it, this is based on energymap, which has only one value for the county Inlive in. (The Netherlands) Since NL is dark orange on energy map, I don’t understand how the percentage shown on my dashboard can be ~ 93%, even if I take into consideration my solar panels. Unless HA magically figured out that I buy only green energy, but I guess there is no way HA van know that.
So: how is this percentage calculated? Can I view the values it is based on somewhere?
From what I just researched, what happens is two items are independently determined:
The amount of energy you have taken from the grid (as a time series)
The percentage of grid energy that was produced from non-fossil fuels, in the smallest covered location on energy map that covers your location (as a time series)
Then it uses the former to lookup a percentage in the latter (for the same time period), and the non-fossil percentage is calculated. This means that it is only an estimate. In your case energymap only has a number for the whole country, in my case only for the whole state of California. Yet your particular grid energy may be produced differently. I am serviced by Silicon Valley Green Energy and all my grid energy is “green”, so my number should always be 100%, yet at the moment it is something like 60% (because that is the number averaged for all of California).
It uses your location and gives a value based on you location and the generator / grid supply in your area. It’s a best efforts value, not supplier specific.