Household Appliance Electricity Cost & Home Energy Audit Calculator 2026
Calculate running costs for single appliances or audit your entire home with our interactive energy inventory builder, duty cycle physics, and recommended sanctioned load calculator.
⚡ Configure Single Device Power & Usage Routine
➕ One-Click Add Appliance Presets to Inventory
Click to append rowHousehold Active Electronic Inventory
Adjust quantities and operating hours. Real thermostat/compressor duty cycles apply automatically.
| Appliance | Watts | Qty | Daily Hours | Duty Factor | Daily Units | Monthly (kWh) | Action |
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Household Power Consumption Share Breakdown
Which appliance is consuming the highest portion of your electricity bill?
Smart Energy Saving Audit Advice
Your Air Conditioner accounts for of your power bill. Setting the thermostat to 24°C instead of 20°C will save approximately ₹450 to ₹650 every single month! Water Geyser is your highest expense ( ). Installing a 15-minute digital timer or lowering temperature to 50°C saves about ₹300 every month! Ceiling fans account for of consumption. Switching regular 75W fans to 5-Star 28W BLDC fans saves 63% electricity (~₹1,500/year per fan)! accounts for of your power bill. Optimize daily operating duration or switch to 5-Star rated models to minimize bill impact.
Calculate with Official State DISCOM Slabs
Send your units to your state tariff engine:
How to Use the Appliance Electricity Cost & Home Audit Calculator
Choose Calculator Mode
Use "Quick Single Appliance" for instant cost estimates, or "Full Home Inventory Builder" to audit all household appliances together.
One-Click Add Appliances
Click quick preset buttons (+ AC, + Geyser, + BLDC Fan, + Fridge) to load engineering duty cycles and standard wattages automatically.
Adjust Quantity & Usage Hours
Fine-tune daily operating hours and device counts for your household routine.
Review Energy Pie Chart & Audit Advice
Inspect the visual energy share breakdown, BEE recommended sanctioned load (kW), and targeted energy saving tips.
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Mathematical Formula & Power Consumption Guide
Appliance Engineering Data & Duty Cycle Factors
Unlike resistive lamps, appliances with compressors or heating elements (such as refrigerators, air conditioners, water geysers, and irons) do not consume power at full rated wattage continuously. Thermostats disconnect heating coils when set temperatures are reached, and inverter compressors modulate motor speeds.
Effective Running Watts = Rated Wattage (W) × Duty Cycle Factor
Daily kWh (Units) = (Rated Watts × Duty Factor × Hours/Day × Quantity) ÷ 1000
Monthly kWh (Units) = Daily kWh × 30
Monthly Bill (₹) = Total Monthly Units × Tariff Rate (or State DISCOM Engine)
Standard Benchmark Duty Cycle Table:
| Appliance | Rated Watts | Duty Factor | Effective Watts | Typical Use | Daily Units |
|---|---|---|---|---|---|
| Water Geyser | 2000 W | 0.60 | 1200 W | 1.0 hr | 1.20 u |
| Electric Iron | 1000 W | 0.50 | 500 W | 0.5 hr | 0.25 u |
| Induction Cooktop | 1800 W | 0.70 | 1260 W | 1.5 hr | 1.89 u |
| Microwave Oven | 1200 W | 0.80 | 960 W | 0.25 hr | 0.24 u |
| Water Pump (1 HP) | 750 W | 1.00 | 750 W | 1.0 hr | 0.75 u |
| Ceiling Fan (Standard) | 75 W | 1.00 | 75 W | 16 hr | 1.20 u |
| Ceiling Fan (BLDC 5-Star) | 28 W | 1.00 | 28 W | 16 hr | 0.45 u |
| Refrigerator (260L Double Door) | 250 W | 0.35 | 87.5 W | 24 hr | 0.70 u |
| Inverter AC (1.5T @ 24°C) | 1400 W | 0.60 | 840 W | 8.0 hr | 6.72 u |
| LED Bulb (9W) | 9 W | 1.00 | 9 W | 8.0 hr | 0.07 u |
| Smart TV (50" LED) | 100 W | 1.00 | 100 W | 5.0 hr | 0.50 u |
| Desktop / Gaming PC | 400 W | 0.60 | 240 W | 6.0 hr | 1.44 u |
Recommended Sanctioned Load (kW) Formula
Household appliances are never operated simultaneously at 100% capacity. We apply the Bureau of Energy Efficiency (BEE) diversity factor:
Recommended Sanctioned Load (kW) = ⌈ (Highest Power Heavy Appliance + 0.30 × Other concurrent loads) × 1.25 (Safety Factor) ⌉
Example for a standard 2BHK flat (1 AC + 1 Geyser + Fans + Fridge): Recommended Sanctioned Meter Load is 3 kW or 4 kW.