Bihar
State / UT
SBPDCL
Utility Board
₹7.42/unit
1 Unit Rate
4 covered
Categories
Tariff by Connection Category
Domestic (Residential)
| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0–50 | ₹7.42 |
| 51–above | ₹7.96 |
Detailed Charges
Commercial
| Slab Range (kWh) | Rate/Unit |
|---|---|
| 0–100 | ₹7.79 |
| 101–above | ₹8.21 |
Detailed Charges
PRIMARY — BERC 'NDS-I Rural (Metered)' non-domestic/commercial category, Approved Tariff for NBPDCL & SBPDCL area, FY2025-26 (berc.co.in, Tariff_Chart_FY_2025-26.pdf). Fixed charge is ₹60/kVA (not strictly kW) or part thereof/month; modelled here via the perLoad/perKW field. 'NDS-II' (demand-based, urban) categories have different rates (e.g. contract demand 0.5-70kW: ₹300/kW fixed, ₹7.73-8.93/kWh) not modelled.
Industrial
| Rate | Rate/Unit |
|---|---|
| All units | ₹7.79 |
Detailed Charges
PRIMARY — BERC 'LTIS-I' Low Tension Industrial category, Approved Tariff for NBPDCL & SBPDCL area, FY2025-26 (berc.co.in, Tariff_Chart_FY_2025-26.pdf): flat ₹7.79/kVAh (not slabbed), fixed ₹288/kVA or part thereof/month (per kVA, modelled here via the perLoad/perKW field). 'LTIS-II' has the same energy rate with a higher fixed charge (₹360/kVA).
Agriculture
| Rate | Rate/Unit |
|---|---|
| All units | ₹7.17 |
Detailed Charges
PRIMARY — BERC 'IAS-II (Metered, Demand based)' Irrigation & Agriculture Services category, Approved Tariff for NBPDCL & SBPDCL area, FY2025-26 (berc.co.in, Tariff_Chart_FY_2025-26.pdf): flat ₹7.17/kVAh, fixed ₹500/kVA or part thereof/month (per kVA, modelled here via the perLoad/perKW field). The smaller/connected-load-based 'IAS-I (Metered)' category is cheaper (₹6.74/kWh) but bills its fixed charge per HP (₹100/HP/month) rather than per kW/kVA, which this schema cannot represent without a unit-conversion assumption, so IAS-II was used instead as the closer structural fit.
Bihar Tariff Structure Explained
Bihar 1 Unit Rate
For domestic electricity consumers in Bihar, the initial 1 unit rate starts at ₹7.42 per kWh for consumption within the first slab per monthly billing cycle.
Tariff Categories
The tariff schedule for Bihar covers 4 consumer categories shown above (Domestic (Residential), Commercial, Industrial, Agriculture). Each category has its own energy rates and fixed charges designed for domestic, commercial, industrial or agricultural usage.
Fixed Charges and Other Charges
In addition to unit energy rates, SBPDCL electricity bills include fixed charges and (where applicable) meter rent based on connection parameters.
Electricity Bill Calculation
To estimate your electricity bill for Bihar, multiply your monthly energy consumption in kilowatt-hours (units) by the applicable slab rates, add fixed charges, and include applicable taxes or duties. You can compute your estimated bill instantly using our SBPDCL electricity bill calculator.
Applicable Electricity Board
These electricity tariff rates are applicable for consumers in Bihar served by SBPDCL.
State / UT
Bihar
Electricity Board
SBPDCL
Last Updated
29 August 2026
Frequently Asked Questions
What are the latest electricity tariff rates in Bihar?
The latest verified tariff rates for Bihar are structured by connection category (Domestic (Residential), Commercial, Industrial and Agriculture) as shown in the tables above, sourced from South Bihar Power Distribution Co. Ltd (SBPDCL)'s published tariff schedule effective 1 April 2025.
How do I calculate my Bihar electricity bill online?
Use our dedicated SBPDCL bill calculator — enter your units consumed and connection type for an itemised, slab-by-slab estimate including fixed charges and electricity duty.
Why is my Bihar electricity bill higher than the energy charges alone?
In addition to per-unit slab rates (energy charges), your bill includes other components such as fixed/demand charges, meter rent and electricity duty (tax).
How often are these electricity tariff rates updated?
Electricity tariff rates in India are typically revised periodically by the respective State Electricity Regulatory Commission (SERC). We update our tariff data as soon as new orders are verified — see the "last verified" date on each category card above.
What is the price of 1 unit of electricity in Bihar?
The rate for the first slab of Domestic electricity in Bihar is ₹7.42 per unit. This rate may increase as consumption moves into higher slabs — see the Domestic (Residential) table above for the full slab structure.
Does SBPDCL offer a separate tariff for Commercial or Industrial connections?
Yes — see the Commercial, Industrial and Agriculture categories above for their own slab rates and fixed charges, distinct from the Domestic tariff.