100 units electricity bill in Bihar
A home in Bihar that uses 100 units a month pays about ₹0 on today’s BERC tariff (order of 18 March 2026). The Government of Bihar tariff subsidy pays the whole bill.
- No bill to pay
- Tariff before schemes: ₹902
- NBPDCL, SBPDCL
How the 100-unit bill adds up
| Slab (units) | Units × rate | Amount |
|---|---|---|
| All units (one rate) | 100 × ₹7.42 | ₹742.00 |
| Energy charge | ₹742.00 | |
| Fixed charge | ₹160.00 | |
| Government of Bihar tariff subsidy | −₹330.00 | |
| Mukhyamantri Vidyut Upbhokta Sahayata Yojana: 125 units free | −₹572.00 | |
| Bill | ₹0.00 | |
Urban home, default options of the Bihar calculator, monthly bill. Source: BERC Tariff Order for NBPDCL & SBPDCL, FY 2026-27 (uniform state-wide tariff).
What changes the bill
- The Government of Bihar tariff subsidy takes ₹902 off. Before it, the bill is ₹902.
- One more unit adds ₹0.00.
- Unit 126 adds about ₹164 on its own: the bill moves to higher rates there. Stay at 125 units or below if you can.
- At 50 units the bill is ₹0; at 150 units it is ₹263.
Where 100 units sit in the Bihar slabs
All 100 units are charged at one rate: ₹7.42 a unit.
Of the bill before any scheme, the energy charge is 82%, the fixed charge is 18%.
100 units a month is about 3.3 units a day.
100 units a month in nearby states
100 units a month, priced under each tariff in the region. Bihar is number 1 of 5, from the lowest bill.
| State or UT | Bill a month | Average a unit |
|---|---|---|
| Bihar | ₹0 | ₹0.00 |
| Odisha | ₹420 | ₹4.20 |
| Andaman & Nicobar Islands | ₹490 | ₹4.90 |
| West Bengal | ₹576 | ₹5.76 |
| Jharkhand | ₹840 | ₹8.40 |
Urban home, 2 kW, the calculator’s default options, with each state’s own free-unit schemes. States that bill every two or three months are shown per month.
What this figure includes
- BERC tariff before the State subsidy; the subsidy and the 125 free units are shown as their own lines.
- Smart-metered homes are on mandatory ToD: 80% of the rate 09-17 h, 110% 17-23 h. This estimate uses the flat rate.
- Electricity duty and FPPAS not included.
Questions
How much is the electricity bill for 100 units in Bihar?
About ₹0 for 100 units a month on the Bihar tariff, with the calculator’s default options. Your load, phase and any monthly fuel charge can change it.
What is the per unit rate for 100 units in Bihar?
The bill is nil, so the average is ₹0 a unit. The last units are charged at ₹7.42 each in the tariff.
How many units a day is 100 units a month?
About 3.3 units a day. One unit is one kWh: a 1,000-watt load for one hour.
How do I lower a 100-unit bill?
Stay at 125 units or below: the bill jumps above that. Use the appliance calculator to find what uses the most power.