- Microinverters still require the grid  for a reference signal. But, can the reference signal be provided from an off-grid pure sine wave inverter with a small battery?
- Hybrid inverters can work without grid - . They are both solar inverters and battery inverters. But, can they work without grid if there are no batteries?
- Hybrid inverters feed from grid, or batteries, or solar 
- String inverter that works off grid without batteries -
- Can run grid-tie inverter to pump an air conditioner - without batteries - 
- Can a battery inverter run on solar only?
- Island or stand-alone feature on grid-tie inverters allows them to work without grid -