We’re planning to install the following system for a couple of houses due to increased power outages from the grid.
Each house will have:
2 strings of 5 panels. Each panel 375Wp, 42V Voc and 12A Isc.
Easysolar 48/3000/32
48V 100Ah LifePo4 battery
This will run all the critical loads in the house 24/7.
Non critical loads like vacuum cleaners, water heaters and washing machines will be on grid only.
Reading about the 2nd AC output I’ve been wondering if we could utilise this output to pass through all the non critical loads and when the batteries are fully charged, send pv power to AC2 and reduce the electricity bill.
Can we send excess pv power to AC-2-out? Or doesn’t this work as we would exceed the inverter limit of (around) 2400W?
From your answer I guess my question is more if I can substitute pv power to ac-out 1/2 during grid operation?
Grid is working and providing power.
pv charged the batteries (lets say >95%) and now I would like to ‘feed’ in excess pv power into my ac-out 1 and 2.
But I don’t know if this is possible. In my idea, the inverter would need to ‘throttle’ the grid power and then feed in from pv/batteries to supply the excess pv being generated. If the inverter can’t throttle and only do 100% of the power being drawn from ac-out-2, that wouldn’t work as some loads like water heaters could exceed the 2400W from the inverter.
Thanks, yes this is a fixed install an ESS is part of the plan. We’re still talking with the grid supplier if we’re allowed to feedback. There will probably be a limit per day/month. But we have grid around 12-20 hours a day normally. Battery levels will be kept close to 100% before sundown as most cuts are during the evening and night hours.
Good to hear that solar will be automatically fed to its outputs and yes it’s the expected behaviour that AC-OUT-2 will lose power when grid is lost.
See below on the idea. Perhaps we’ll add a monitor.
