dougbert
Solar Addict
that is what I want to do. Run on battery all the time except when the battery gets too low, then the grid takes over the loads with ByPass and the battery is charged by the solar panels during the day. But with my limited time with the Pro, I cannot determine just how to do that.But why?
I don't see the goal/purpose.
When the battery runs low, why not just let the grid power your loads and let the battery sit low overnight?
Every time I turn on the grid, it goes to ByPass, charges the battery. When the battery reaches the Bulk target, the charger turns off and the grid stays in ByPass running the Loads. aka UPS mode
I want to run the house from the battery all the time - until it gets too low. From March to November I RARELY had (under the Xantrex inverter) the battery discharge so low to cause a Grid ByPass. Very sunny during those times. Late November to early February we get rain/snow storms.
how do you do that? how to get the grid OUT of ByPass?I leave my system connected to the grid all the time. Solar supports loads and charges the battery most of the time. I have set the "grid support voltage" to about 60% SOC, meaning if the power goes out I'll always have at least 60% of my battery capacity to make it through even the hottest nights.
Once the battery discharges to 60% it just sits there. I might buy 2 or 20 kWh, but I'll only buy the power I actually used. PV can recharge tomorrow, or not if the weather doesn't cooperate.
maybe it is because I don't understand "grid support voltage" - the manual SUCKS in explaining it
Seems like with your plan, any time you run the battery down, you'll be buying XX kWh, even if you only needed 100Wh to make it through the night. You might even buy enough that you have excess solar the next day, past what the battery can hold.
In sunny times, the battery fills full and the H2O heater diversion kicks in. When all the water is hot, then yes, the solar is wasted. I do not do NetMetering. Even if I wanted to, the local grid circuit is maxed out and they are NOT allowing any more Netmetering connections.
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