#Hi all hopefully an easy question but

1 messages · Page 1 of 1 (latest)

golden wigeon
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I think I figured this out. I need to replicate the total energy consumption used tracking that the default dashboard uses, since it appears that my sensor just reports cumulative use. Once I have that, I can build a template sensor that takes the solar generated and the daily consumption and make something that represents the net usage. The downside is that since I can't easily track the credits and debits separately, it will likely look wonky.

So while I don't really want to do it, I think I'm going to see how to extend the CT clamps through the wall of my house and into the panel that has the utility feed/generator/solar interconnects.

safe knoll
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Can’t you split the import and export into two sensors, each of which have independent tariffs?

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Do your devices have +/- W or just total net which goes up and down?

golden wigeon
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I have the solar generation which is daily and cumulative kWh, and I have the total used kWh in the household. So fundamentally to get the in and out, I would need to essentially sample the load over time to see if I was pushing to the grid or pulling. I could then put those into accumulators and use it as the synthesized utility sources... maybe.

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I suspect I will be better off figuring out how to put the clamps where I need them.

safe knoll
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Clamps are good. Does your solar or house have no W sensors?
I think you should be able to convert real-time kWh into W using whatever is the opposite of integration. Derivative?

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differentiation

rocky sun
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you have:
house = solar - return_grid + cons_grid
so:
return_grid = max(solar - house + cons_grid, 0)
cons_grid = max(return_grid - solar + house, 0)

You can make two template sensors, one for return_grid and another for cons_grid. These take the kWh values you have as input

golden wigeon
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Thanks all for your help. I ended up deciding that the problem was really presentation layer within the default energy dashboard, and that by creating some sensors, I'd have what I waned - just not using the default dashboard.

What I think I'll do when I have some time is look if I can clone the default dashboard, but make a few small changes so that it can work the way my sensors require. If there's interest, I can provide those changes to the community. I haven't looked deeply at any of the HA implementation, and so I can't tell you how easy/hard that might be, but it doesn't seem like it would be a huge hurdle.

safe knoll
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You can put all the widgets on other dashboards, and there are some realtime-power ones too. I have my own energy dashboard, which needs work, like permanently.

golden wigeon
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Yeah that's what I have done so far, but it would be nice to have the standard integration just with slightly different math... we will see how ambitious I get.

rocky sun
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but I do agree it would be nice to have the flexibility, the math isn't difficult it's just a bit more frontend work

golden wigeon
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I think my case is unusual only because I have solar generation data and due to the connections being outside, my home panel is effectively a subpanel now. So it is easier to measure the total consumption vs trying to directly measure the flows to the grid.

rocky sun