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Ghar Energy Tools

23 practical calculators and 200 plain-language answers for better household energy decisions.

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© 2026 Ghar Energy ToolsMade for informed household decisions in India.
23 practical tools

Home energy, made easier to calculate.

Choose a tool, enter your own rates and see the assumptions behind every result. No login, no saved data, no cost.

5 focused categories Inputs stay on this device Every listed tool works now
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Showing 23 of 23 working tools

Available nowElectricity

Electricity bill

Estimate monthly and annual electricity spend using your own tariff.

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Available nowElectricity

Appliance cost

See what one appliance may add to your monthly bill.

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Available nowElectricity

Ceiling fan cost

Estimate ceiling fan electricity use and cost from your own fan ratings and routine.

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Available nowElectricity

Refrigerator cost

Estimate refrigerator running cost with a user-entered wattage and duty cycle.

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Available nowElectricity

Water pump cost

Estimate water-pump electricity cost from rated power, quantity and operating time.

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Available nowElectricity

Lighting cost

Estimate the electricity cost of a group of lamps using your wattage and schedule.

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Available nowCooling

Air cooler cost

Estimate air-cooler electricity use and cost from its input power and your usage.

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Available nowEV & heating

Induction cooktop cost

Estimate induction-cooktop cost using rated power, average power setting and cooking time.

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Available nowElectricity

Washing machine cost

Estimate washing-machine electricity cost from power, cycle duration and cycle count.

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Available nowElectricity

Standby power cost

Estimate the always-on electricity cost of appliances left in standby mode.

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Available nowSolar

Solar system size

Estimate the rooftop solar capacity needed for your electricity use.

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Available nowSolar

Solar generation

Estimate annual energy from a rooftop solar system.

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Available nowSolar

Solar payback

Estimate simple payback using your quote and expected generation.

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Available nowSolar

Rooftop solar area

Estimate how much solar capacity may fit on your usable roof.

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Available nowSolar

Solar benefit estimate

Model a benefit using values you verified from an official source.

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Available nowBackup power

Inverter VA

Estimate inverter capacity from connected load and headroom.

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Available nowBackup power

Battery capacity

Estimate battery amp-hours for a target backup duration.

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Available nowBackup power

Battery backup

Estimate how long a battery may run your essential load.

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Available nowCooling

AC tonnage

Get a rough room AC capacity shortlist before a heat-load survey.

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Available nowCooling

AC running cost

Estimate monthly air-conditioner electricity use and cost.

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Available nowEV & heating

EV charging cost

Estimate the home electricity cost of charging an electric vehicle.

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Available nowEV & heating

Geyser cost

Estimate the energy needed to heat household water.

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Available nowBackup power

System comparison

Compare the different jobs and indicative costs of three systems.

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