Electrical

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.