#Solar savings
rocky temple
correct
thick creek
Bummer, hoped they were stored in statistics or something
I guess Solar production and Grid import is stored there, and not calculated on the fly from history?
Makes things a lot more complicated to change
Is there a Core part for the Solar production/Grid import? That does the statistics saving etc.?
That I might just be able to copy some code from, and do a calculation from?
I see there is some "on the fly" calculation of the Self consumed solar here:
https://github.com/home-assistant/frontend/blob/25c702ad2bb1fb7d1f93a2237b2e0035e81d3dc4/src/panels/lovelace/cards/energy/hui-energy-solar-consumed-gauge-card.ts#L104C5-L110C6
I guess all this has to be refactored too then, if I implement statistics/history of the value before a PR would be accepted :/
rocky temple
I have no idea, there are only a few people here who know how any of the frontend stuff works. Perhaps @tight furnace knows
thick creek
We'll see if anyone else chimes in with some info here then 🤞
Meanwhile I'll keep digging to try to understand who it all works.
Thanks @rocky temple 🙏
tight furnace
Yeah consumed solar is a frontend calculation, that link you posted is probably the right place.
I think the only thing core does for energy is manage the cost statistic if you select a fixed price.
thick creek
OK.
So if you have an entity that holds the cost there is nothing done in Core?
All calculations are done in the frontend?
tight furnace
frontend requests from core all of the statistics for all the entities you configure in your energy config page. with that data the frontend computes some of the other displayed values (like consumed solar, total consumption, etc)
thick creek
Also the "cost" in the Source table?
tight furnace
the cost is a statistic, the frontend doesn't calculate costs, the backend does
well the frontend calculates the total I guess
thick creek
Ok. Any idea where that is done?
Cuz that's where this Solar savings has to start saving the data I recon..
tight furnace
doesn't your idea fall apart if you have a tariff electrical rate? It's not always just as simple as a fixed price
thick creek
Why?
Import from grid manages to calculate the cost for import already?
That's the same price I "save" for the selfconsumed solar.
all the numbers are basically there already?
Instead of me importing 1 kWh from the grid, because my PV managed to produce that 1 kWh.
Would mean i saved that 1kWh in the current tariff price.
tight furnace
I guess I was thinking in some cases you are billed more as consumption increases, like after X kWh consumed the price increases
the increased rate wouldn't be captured if you only have hypothetical consumption
thick creek
Sure there are edge cases like that
But i don't think that needs to be thought of here
tight furnace
maybe that's ok to ignore 🤷
thick creek
that would be the entity you chose for the price that has to calculate that correctly?
tight furnace
I guess user can either have choose a dynamic price (and let energy backend calculate), or they can provide a sensor with total cost and calculate themselves.
thick creek
There is no advanced pricing method in the energy dashboard as of now anyway. So why complicate things?
You can choose fixed, or a sensor/entity that gives the price, or no price at all?
tight furnace
backend cost calculation is in homeassistant/components/energy