Understand electricity units and running costs in rupees.
How many units does your AC use? What does a ceiling fan cost to run? EnergyCalc turns your appliance data and applicable tariff into clear estimates in rupees.
Electricity cost calculator
Calculate an appliance’s electricity use and running cost per day, month and year using its power, operating schedule and your unit rate.
CalculateAll tools
Electricity cost calculator
Calculate an appliance’s electricity use and running cost per day, month and year using its power, operating schedule and your unit rate.
Appliance running cost calculator
Explore editable appliance examples and estimate electricity use with the actual power and operating hours of your own equipment.
Compare appliance energy costs
Compare two appliances or operating scenarios and see their electricity use, annual costs, cash savings and percentage difference.
Standby electricity calculator
Estimate the monthly and annual electricity cost of devices left in standby using measured watts, standby hours and device count.
Solar and home battery calculator
Estimate solar generation, household coverage, energy savings and simple payback, with an optional domestic battery scenario.
Heat pump electricity and cost calculator
Estimate heat pump electricity use from annual heat demand and SCOP, then compare running costs with direct electric or gas heating.
Electric vehicle charging cost calculator
Calculate battery energy, electricity drawn from the grid and the cost of charging between two battery percentages.
Electric vehicle cost per distance
Estimate an electric vehicle’s energy cost for a journey, per 100 km, and across your monthly and annual mileage.
Electric car versus petrol or diesel costs
Compare annual electricity and fuel costs for the same driving distance using your consumption figures and local energy prices.
Household electricity use calculator
Review annual household electricity use, monthly averages, consumption per person and per square metre, and the effect of a tariff change.
Energy units and percentage calculator
Convert W and kW or Wh and kWh, and calculate percentage changes without confusing electrical power with energy consumption.
An electricity 'unit' on an Indian bill means one kWh. There is no single household tariff that applies across India: your DISCOM, state, connection category, billing period and consumption slabs matter. For the likely cost of extra appliance use, check the rate applicable to the additional units rather than assuming that your bill divided by total units is the marginal rate.
For cooling, compare measured electricity use or the relevant BEE label information, not only an air conditioner's tonnage. Tonnage describes cooling capacity, not electrical input in kW. Ceiling fans, refrigerators, water pumps and electric geysers are useful starting points for a household review. Where an inverter or battery supplies appliances, allow for energy lost when charging and converting power.