No heating loads, it's a natural gas furnace. Loads are just lights, furnace blower, and other ancillary loads. It's not exactly the same as just adding batter

No heating loads, it's a natural gas furnace. Loads are just lights, furnace blower, and other ancillary loads. It's not exactly the same as just adding battery backup, because the marginal cost of adding battery backup to a solar inverter is far lower than getting an inverter for just backup purposes, and solar allows a smaller battery.