Energy Calculators

Estimate monthly electricity consumption from appliance power, daily usage and days used.

Estimate electricity cost from energy use, price per kWh and optional fixed charges.

Calculate the cost of a specified electricity usage at a chosen price per kWh.

Estimate daily and monthly solar energy generation from panel count, wattage, peak sun hours and system efficiency.

Estimate electricity-cost savings from solar generation using energy output and grid electricity price.

Estimate simple solar-system payback from upfront cost and annual electricity savings.

Estimate generator runtime from available fuel and hourly fuel consumption.