Battery vs Generator Cost Calculator
Compare battery and generator backup costs using your outage hours, power load, fuel price, electric rate, and equipment costs.
Compare battery and generator backup costs using your outage hours, power load, fuel price, electric rate, and equipment costs.
Compare exporting extra solar with charging a battery, including efficiency, export credit, payback, and export-limited solar.
Estimate solar used at home, exported kWh, grid power needed, annual value, and extra EV solar charging value.
Estimate home battery TOU savings, mid-price shifting, and simple payback from your rates, battery size, efficiency, and cost.
Estimate battery payback using installed cost, cycles, peak/off-peak rates, export credit, incentives, and battery aging.
Estimate panels needed, system size, monthly production, roof space, roof fit, and rough cost from kWh use and sun hours.
Size off-grid solar panels, batteries, inverter, and controller, then check weak months with your own monthly sun hours.
Estimate 3-phase voltage drop, percent drop, load voltage, heat loss, and a voltage-drop-only wire size suggestion.
Check breaker fit for one dedicated device load, including the 125 percent continuous-load rule and optional voltage drop.
Add watts or amps for devices on a power strip and check strip load, long-run target, setup safety, and same-circuit room.