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waldoj / home-battery

Figuring out how to install a home battery bank for a PV array.
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What kind a switch is needed for this? #8

Open waldoj opened 5 years ago

waldoj commented 5 years ago

It seems like a switch (or multiple switches?) are needed here. Power needs to either go to the battery bank or the house, and then power needs to either come from the battery bank or the grid. Something has to monitor the power demands of the house, the capacity of the batteries, and the power being generated by the PVs, to figure out when the draw from the batteries, when to send power to the batteries, etc.

waldoj commented 5 years ago

OK, so the standard in question seems to be UL 1741, which costs $716 to read because of course it does.

waldoj commented 5 years ago

I think SolarEdge's StorEdge is the right idea? The brochure promotes "demand response and peak shaving."

I note, however, that its diagram shows DC power coming from the panels, not AC (per #1).

waldoj commented 5 years ago

It looks like StorEdge has three components: the inverter, auto-transformer, and battery pack. The auto-transformer is only for backup power, so it's the inverter that's the real hero here.

So the question I'm left with is what you call the functionality of their inverter that isn't the inverter.