Bihar Electricity Bill Calculator

Bihar's electricity distribution is managed by two separate public sector utilities — the North Bihar Power Distribution Company Limited (NBPDCL) and the South Bihar Power Distribution Company Limited (SBPDCL). Both companies operate under the Bihar State Power Holding Company Limited (BSPHCL) and are responsible for supplying electricity to millions of households, commercial establishments, and agricultural consumers across the state. NBPDCL serves consumers in districts north of the River Ganga, while SBPDCL covers the southern districts including Patna, Gaya, and surrounding regions. Together, they form the backbone of Bihar's electricity distribution network, serving both urban and rural consumers at government-regulated tariff rates approved by the Bihar Electricity Regulatory Commission (BERC).

1. Select Bihar as your state — the calculator automatically loads the latest NBPDCL/SBPDCL tariff rates approved by BERC.
2. Choose your connection type — Domestic Rural, Domestic Urban, Commercial Rural, Commercial Urban, or Agriculture/Irrigation.
3. Enter your monthly electricity consumption in units (kWh). You can find this on your NBPDCL or SBPDCL bill, or calculate it by subtracting the previous meter reading from the current one.
4. Click "Calculate Bill" — the tool instantly computes your energy charges slab-by-slab, adds fixed charges, meter rent, electricity duty, and fuel adjustment charges (FAC).
5. View your itemised bill breakdown — see exactly how much each component costs, including per-slab energy charges and all additional charges.
6. Optionally customise the tariff slabs and charges using the "Customize Slabs" option if BERC revises the rates or you want to verify with different values.

If you are a consumer under the North Bihar Power Distribution Company Limited (NBPDCL), this calculator helps you estimate your monthly electricity bill based on the current NBPDCL tariff schedule. NBPDCL applies a tiered slab rate structure where the rate per unit increases as consumption rises. For domestic rural consumers, the initial units are charged at a lower rate, making electricity more affordable for rural households. The NBPDCL Bill Calculator automatically accounts for all applicable slab rates, fixed charges, electricity duty, and other surcharges, giving you a clear breakdown of your total payable amount before your actual bill arrives.

Consumers supplied by the South Bihar Power Distribution Company Limited (SBPDCL) can use this calculator to get an accurate estimate of their upcoming electricity bill. SBPDCL serves the densely populated southern Bihar region, including the state capital Patna. The SBPDCL tariff follows the same BERC-approved rate structure as NBPDCL, ensuring uniform billing standards across the state. Whether you are a domestic urban consumer, a small commercial establishment, or an agricultural consumer using irrigation pumps, the SBPDCL Bill Calculator provides a quick and transparent estimate so you can plan your monthly household or business budget effectively.

The following tariff rates for Bihar are approved by the Bihar Electricity Regulatory Commission (BERC) and apply to both NBPDCL and SBPDCL consumers. The rates shown below are used directly by the calculator. Domestic consumers benefit from the Har Ghar Bijli subsidy scheme.

Domestic Rural (NBPDCL / SBPDCL)

Domestic Urban (NBPDCL / SBPDCL)

Commercial Rural

Commercial Urban

Agriculture / Irrigation

Here is a step-by-step example of how the Bihar Electricity Bill Calculator computes your NBPDCL or SBPDCL bill for a Domestic Urban consumer who consumed 200 units in a month with a sanctioned load of 2 kW.

Note: This is an approximate estimate based on current BERC-approved tariff rates. Your actual NBPDCL/SBPDCL bill may vary slightly due to additional surcharges, arrears, or subsidy adjustments applied by the distribution company.

One of the most practical uses of the Bihar Electricity Bill Calculator is predicting your bill amount before your actual NBPDCL or SBPDCL bill is generated. By tracking your meter reading at the start and end of a month, you can calculate your consumption in units and enter it into our calculator. This helps you avoid bill shock, manage electricity usage more efficiently, and plan your monthly budget. The calculator also shows you the per-unit rate applicable to each consumption slab, so you can understand exactly how reducing your usage by a few units can significantly lower your electricity charges — especially if you are near the 125-unit free threshold.