RubanTools

Electricity Bill Calculator

Enter your meter reading and state - get an instant slab-wise bill breakdown covering 25+ states and DISCOMs across India.

Bill Calculation Details
Rates are indicative domestic tariff (LT domestic category). Rates vary by DISCOM; verify with your provider for exact amounts.

How to Reduce Your Bill

BEE 5-Star Appliances

A 5-star AC uses 20–30% less electricity than a 3-star. For a household running AC 8 hrs/day for 5 months, this saves ₹2,000–6,000 per year in bill.

Rooftop Solar + Net Metering

A 3kW rooftop solar system generates ~12–15 units/day. Under net metering, surplus power is credited to your bill. PM Surya Ghar scheme offers up to 40% subsidy.

Off-Peak Usage

With smart meters and ToD tariffs, running heavy appliances (washing machine, EV charging) after 10 PM can save 15–25% - off-peak rates are mandated to be lower.

Frequently Asked Questions

India uses a progressive slab tariff - the first N units are cheaper, higher consumption is charged at higher rates. This calculator shows each slab's contribution. Most states also add a fixed monthly charge (₹20–100) regardless of consumption.

1 unit = 1 kilowatt-hour (kWh). A 1000W appliance running for 1 hour = 1 unit. A typical ceiling fan uses ~0.075 units/hour; a 1.5-ton AC uses ~1.5 units/hour; a 5-star 250L fridge uses ~1.5 units/day. Average household uses 150–300 units/month.

A fixed monthly charge covers grid maintenance costs - it is charged even if you consume zero units. Typically ₹25–200/month for domestic connections. Some states also charge meter rent (₹10–30/month). This appears as "Fixed Charges" or "Minimum Charges" on your bill.

Use BEE 5-star appliances, LED bulbs (saves ₹500–1000/year), install rooftop solar with net metering, use appliances during off-peak hours (10 PM–6 AM), and avoid standby consumption by unplugging devices. A smart energy meter helps track real-time consumption.

ToD tariffs charge different rates by time - off-peak (10 PM–6 AM) is cheaper, peak (6–10 PM) is expensive. Being rolled out for smart meter consumers. Shifting EV charging and washing machine usage to off-peak can save 15–25% on bills.

Under net metering, surplus rooftop solar power is exported to the grid and credited on your bill at the export tariff (₹2–4/unit). A 3kW system in India generates ~12–15 units/day. The PM Surya Ghar scheme offers up to 40% subsidy for residential installations.