⚡ How to Calculate Bihar Electricity Bill - Quick Answer
Bihar domestic electricity bill 2026 (NBPDCL / SBPDCL) uses a 2-slab tariff with first 125 units FREE. Above 125 units is charged at a flat ₹5.52/unit (on all units, not telescopic). Your total bill adds a ₹80 fixed charge, ₹25 meter rent, a ₹0.15/unit FAC, and a 5% electricity duty on energy charges. Use the calculator below for an instant result.
Bihar Electricity Bill Calculator
Enter your monthly electricity consumption in units (kWh) and select your connection type. NBPDCL / SBPDCL Bihar tariff - first 125 units FREE for domestic consumers! Above 125 units charged at flat ₹5.52/unit on total consumption. The calculator instantly shows a full breakdown with charts.
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🪷 NBPDCL / SBPDCL Tariff 2026 - Patna · Muzaffarpur · Gaya · Bhagalpur
Your Bill Breakdown
🏛️ Nalanda · 🛕 Vaishali · 🏰 Rajgir
Bill Breakdown Charts
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Which DISCOM Serves Your District in Bihar?
Bihar electricity is distributed by two DISCOMs under BERC oversight. Both follow the same BERC-approved tariff for 2026 - first 125 units FREE for domestic consumers. All 38 districts of Bihar are covered.
NBPDCL - North Bihar Power Distribution Company Limited
Covers 21 districts of North Bihar, including Muzaffarpur, Darbhanga, Chhapra (Saran), Motihari (East Champaran), Bettiah (West Champaran), Gopalganj, Siwan, Samastipur, Sitamarhi, Vaishali (Hajipur), Begusarai, Khagaria, Madhubani, Purnia, Katihar, Kishanganj, Araria and Saharsa.
SBPDCL - South Bihar Power Distribution Company Limited
Covers 17 districts of South Bihar, including Patna, Gaya, Ara (Bhojpur), Aurangabad, Buxar, Sasaram (Rohtas), Bihar Sharif (Nalanda), Rajgir, Jehanabad, Nawada, Munger, Bhagalpur, Jamui, Lakhisarai, Sheikhpura and Banka.
Bihar Electricity Tariff Rates 2026 - NBPDCL & SBPDCL
These rates are approved by BERC (Bihar Electricity Regulatory Commission) for FY 2025–26 and apply uniformly across both NBPDCL and SBPDCL. First 125 units FREE for domestic consumers - Bihar's generous free power scheme. Above 125 units, ₹5.52/unit is charged on total consumption (non-telescopic billing).
🏠 Domestic (LT-I) Consumer Slab Rates - 2026 ⚠️ Non-Telescopic
| Units Consumed per Month (kWh) | Rate per Unit (₹/kWh) | Slab Amount (Example) |
|---|---|---|
| 0 – 125 units | ₹0.00 / unit (FREE) | Zero charge - Bihar free power scheme |
| Above 125 units | ₹5.52 / unit (on ALL units) | ⚠️ Non-telescopic - charged on total consumption, not just excess |
📋 Additional Charges - Domestic 2026 (NBPDCL/SBPDCL)
| Charge Type | Rate / Amount | Notes |
|---|---|---|
| Fixed Monthly Charge | ₹10 / kW | Per kW of sanctioned/contracted load, every slab |
| Meter / Customer Charge | ₹25 / month | For standard single-phase meter |
| FAC (Fuel & Power Purchase Cost Adjustment) | ≈ −₹0.13 / unit | Currently a refund to consumers, not a surcharge (NBPDCL/SBPDCL order dated 27.09.2025, applicable through Oct 2026) |
| Electricity Duty | 6 paise (₹0.06) / unit | Flat state duty on energy consumed - not a percentage |
🏢 Commercial Consumer Slab Rates - 2026
| Units Consumed per Month (kWh) | Rate per Unit (₹/kWh) |
|---|---|
| 0 – 100 units | ₹6.10 / unit |
| 101 – 200 units | ₹7.25 / unit |
| 201 – 500 units | ₹8.10 / unit |
| Above 500 units | ₹9.00 / unit |
Commercial fixed charge: ₹120/month. FAC: ₹0.15/unit. Electricity duty: 5% of energy charges. First 125 units free for commercial - all units chargeable from unit 1.
How to Calculate Your Bihar Electricity Bill
Understanding how your Bihar bijli bill is calculated helps you catch overcharges. Bihar uses a unique non-telescopic billing above 125 units - very different from most Indian states. Here's the exact NBPDCL/SBPDCL method.
Read Your Meter
Note down the current meter reading. Subtract the previous month's reading to find units consumed. Your electricity bill also shows this directly as "Units Consumed" in kWh.
Apply Slab Rates (Telescopic)
Bihar uses NON-TELESCOPIC billing. If units ≤ 125: Energy = ₹0 (FREE). If units > 125: Energy = Total units × ₹5.52 (charged on ALL units, not just excess). Example: 1125 units = 150 × ₹5.52 = ₹828 (not just 25 × ₹5.52).
Calculate Electricity Duty
Electricity Duty = 5% × energy charges. If consuming ≤125 units (FREE), energy = ₹0 so duty = ₹0. If consuming 1125 units, energy = ₹828 → duty = 5% × ₹828 = ₹41.40. Collected through your NBPDCL/SBPDCL bill.
Add FAC Adjustment
FAC (Fuel & Power Purchase Cost Adjustment) ≈ −₹0.13 × total units consumed right now - currently a small refund, not a surcharge. It is revised periodically by NBPDCL/SBPDCL based on actual power purchase costs.
Add Fixed Charges & Meter/Customer Charge
Fixed Charge = ₹80 per month + Meter Rent = ₹25 per month (domestic). Total fixed = ₹105 every month regardless of consumption. Even households on the free slab pay ₹105 in fixed charges.
Sum = Total Bill
Total Bill = Energy Charges + Electricity Duty (5% of energy) + FAC (₹0.15/unit on ALL units) + Fixed Charge (₹80) + Meter Rent (₹25). Check this against what's printed on your NBPDCL/SBPDCL bijli bill for accuracy.
Electricity Bill Examples for Common Usage Levels
See exactly how much you'd pay in Bihar for different consumption levels - 2026 NBPDCL/SBPDCL domestic tariff. First 125 units FREE. ⚠️ Crossing 125 units triggers full non-telescopic billing on ALL units!
Duty: ₹0
FAC: ₹7.50 + Fixed+Meter: ₹105
Duty: ₹0
FAC: ₹15 + Fixed+Meter: ₹105
Duty: ₹0
FAC: ₹18.75 + Fixed+Meter: ₹105
Duty: ₹41.40
FAC: ₹22.50 + Fixed+Meter: ₹105
Duty: ₹55.20
FAC: ₹30 + Fixed+Meter: ₹105
Duty: ₹82.80
FAC: ₹45 + Fixed+Meter: ₹105
Duty: ₹110.40
FAC: ₹60 + Fixed+Meter: ₹105
Duty: ₹193.20
FAC: ₹105 + Fixed+Meter: ₹105
⚠️ Approximate estimates based on official BERC 2025–26 Bihar tariffs. ⚠️ Bihar uses NON-TELESCOPIC billing - crossing 125 units means ₹5.52 is charged on ALL units, causing a large bill jump. Always verify with your official NBPDCL/SBPDCL bill.
Advantages & Disadvantages of Bihar's Slab Tariff System
Bihar's tariff model is very generous for low-consumption households with 125 FREE units. However, the non-telescopic billing means crossing 125 units causes a dramatic bill jump - a major disadvantage for middle-class households.
✅ Advantages of the Slab System
- First 125 FREE units - one of the most generous free power schemes in India. Households consuming ≤125 units/month pay zero energy charges, benefiting crores of Bihar families.
- The ₹5.52/unit flat rate above 125 units is relatively affordable compared to top slabs in other states (Maharashtra charges ₹12+/unit). Bihar's highest rate is moderate.
- Each slab is charged independently (telescopic billing), so crossing into a higher slab doesn't retroactively increase charges on earlier units.
- The tariff structure is simple - just 2 domestic slabs (0–125 FREE, 125+ at ₹5.52). Easy to understand and verify on your bijli bill.
- BERC is actively expanding rural electrification across Bihar's 38 districts under Har Ghar Bijli scheme, improving supply reliability significantly.
- Bihar has excellent solar potential - Patna gets 5.0–5.5 kWh/m²/day. PM Surya Ghar solar subsidy is available to Bihar consumers seeking to eliminate bills entirely.
⚠️ Disadvantages & Limitations
- ⚠️ NON-TELESCOPIC BILLING is the biggest disadvantage. Consuming just 126 units (1 unit above the free threshold) results in ₹5.52 being charged on ALL 126 units = ₹695.52 energy charge vs ₹0 at 125 units. A sudden jump of nearly ₹700!
- Starting rate of ₹4.00/unit is among the highest base rates in India - almost 2× mainland states like Bihar (₹1.90 starting rate).
- FAC of ₹0.15/unit is always a surcharge - unlike mainland FAC which can be a refund, island FAC always adds to your bill.
- 5% electricity duty on energy charges (above 125 units) adds significantly to bills. At 200 units (₹1,104 energy), duty = ₹55.20 additional cost.
- Power supply reliability remains a challenge in many rural Bihar districts. Outages can be frequent in North Bihar and remote areas, affecting actual consumption measurement.
- Net metering infrastructure is still developing in Bihar. Rooftop solar owners in many districts face delays in getting NBPDCL/SBPDCL net metering connections approved and commissioned.
20 Proven Ways to Reduce Your Electricity Bill in Bihar
Bihar's non-telescopic billing makes the 125-unit threshold critical. Crossing it by even 1 unit triggers full ₹5.52/unit billing on ALL units. These tips are tailored to Bihar's climate and NBPDCL/SBPDCL tariff structure.
Stay Below 125 Units - Bihar's Most Important Tip
Bihar's non-telescopic billing makes 125 units the critical threshold. Consuming 124 units costs ≈₹124 (just fixed charges + FAC). Consuming 126 units costs ≈₹885+ (full ₹5.52/unit on all 126). That's a ₹760 jump for just 2 extra units! Monitor your meter in the last week of each billing cycle and reduce usage if you're close to 125.
Switch to 5-Star Appliances
A 5-star AC uses up to 25–30% less electricity than a 2-star equivalent. BEE star ratings ensure you know the real consumption. When replacing old appliances, always check the energy label.
Replace All Bulbs with LED
LEDs use just 8–10 watts versus 40–60 watts for incandescent bulbs. If you replace 10 bulbs in your home with LEDs, you'll save roughly 300–400 units annually in Bihar.
Go Solar - Bihar's Growing Solar Opportunity
Bihar receives 5.0–5.5 kWh/m²/day solar irradiation. Given Bihar's non-telescopic billing, solar is especially valuable - reducing consumption below 125 units means zero energy charge. A 1kW system generating 4–5 units/day = ~130+ units/month can potentially keep most households in the free slab permanently. PM Surya Ghar subsidy (up to ₹78,000 for 3kW) is available to Bihar consumers.
Install Roof Insulation
Bihar's flat concrete rooftops absorb intense heat. Adding a false ceiling with rock wool or foam insulation can reduce indoor temperatures by 3–5°C, cutting AC or cooler usage significantly.
Shift Heavy Appliances to Night
Run washing machines, geysers, and dishwashers in the evening or night (after 10 pm). It reduces simultaneous load in your home and prevents your circuit from tripping during peak afternoon hours.
Stop Phantom Load (Standby Power)
TVs, set-top boxes, chargers, and microwaves left plugged in keep drawing power even when idle. In a typical Indian home, standby power wastes 50–100 units per year. Use switchable power strips.
Set AC at 24°C, Not 18°C
Every 1°C increase in AC temperature setting saves roughly 6% electricity. Setting your AC at 24°C instead of 18°C can save 30–40% on cooling costs - BEE recommends 24°C as the national standard.
Use Reflective Window Film
Bihar's strong west-facing windows bring in intense heat during afternoons. Metallic reflective films cut solar heat gain by 70–80%, keeping rooms cooler and reducing cooler or AC load.
Use Solar Water Heaters
Electric geysers are the biggest electricity guzzlers after ACs. A 100-litre solar water heater costs ₹15,000–₹25,000 but saves 200–400 units annually, paying for itself in 3–4 years in Bihar's sun.
Optimise Cooler Usage
Keep your air cooler's pads moist and clean. Dirty pads reduce cooling by 30%. Also, ensure cross-ventilation in the room - coolers need an escape route for warm air to function well, and work best in Bihar's dry pre-monsoon heat (April–June).
Track Monthly Consumption
Read your meter every week, not just when the bill arrives. Spotting a spike early lets you investigate - a refrigerator compressor fault or a geyser left on can quietly add 100+ units in a month.
Bihar Electricity Bill: Everything You Need to Know in 2026
Bihar's electricity sector has gone through significant changes over the past decade. The erstwhile Bihar State Electricity Board (BSEB), operating since 1958, was unbundled on 1 November 2012 under the Bihar State Electricity Reforms Transfer Scheme into five companies - including two distribution companies, NBPDCL (North Bihar) and SBPDCL (South Bihar) - alongside separate generation and transmission companies. As of 2026, both DISCOMs operate under a unified domestic tariff approved by BERC (Bihar Electricity Regulatory Commission).
Understanding NBPDCL/SBPDCL and How Tariffs Are Set
The Bihar Electricity Regulatory Commission (NBPDCL/SBPDCL) is the state regulator that approves all electricity tariffs. Every year, NBPDCL/SBPDCL submit Annual Revenue Requirement (ARR) petitions to NBPDCL/SBPDCL, justifying their cost structures and proposed rate revisions. NBPDCL/SBPDCL holds public hearings before issuing its final tariff order. The rates in this calculator reflect the most recent NBPDCL/SBPDCL order, effective for FY 2025–26 and carried forward unchanged into FY 2026–27.
FAC (Fuel & Power Purchase Cost Adjustment) is separately notified by NBPDCL/SBPDCL and trued-up periodically. It directly reflects the gap between actual and approved power purchase costs - coal, gas, and market power purchases. When NBPDCL/SBPDCL' actual costs come in below the approved baseline, as happened for FY2024–25, the FAC can turn into a consumer refund. Right now (per NBPDCL/SBPDCL's order dated 27 September 2025), the FAC works out to roughly −₹0.13 per unit, applicable through October 2026.
Why Bihar Bills Spike in April–June
Bihar's summer (April to June) regularly pushes household consumption well above 400 units/month, especially in the humid Gangetic plains and the hot, dry southern districts around Gaya and Aurangabad. A single 1.5-ton air conditioner running 8 hours a day consumes approximately 360 units a month by itself. Add lighting, refrigerator, TV, and water pump - and many Patna, Muzaffarpur, or Bhagalpur households cross 400 units in peak months, triggering non-telescopic billing at ₹5.52/unit on their entire consumption. This is why monitoring usage and shifting to more efficient cooling (rooftop solar, insulation, air coolers) makes such a large financial difference in Bihar specifically.
Bihar Free Electricity Scheme - What You Need to Know
Bihar does not run a blanket free-units scheme for all domestic consumers, but several targeted concessions exist: SC and ST households get free power up to 200 units/month, handloom weaver families get up to 100 units/month free, and all agricultural consumers receive 9 hours/day of free power. Fixed charges, meter/customer charges, and duty may still apply depending on the category. Check your eligibility and register with your local NBPDCL/SBPDCL office.
How to Check Your Bihar Electricity Bill Online
Each DISCOM has an online portal for bill viewing and payment. NBPDCL users can visit nbpdcl.co.in, and SBPDCL users can access sbpdcl.co.in. You need your Consumer Account Number (CA number) printed on your current bill. You can also pay through BHIM, PhonePe, Google Pay, Paytm, and the official NBPDCL/SBPDCL consumer app.
Net Metering for Solar Users in Bihar
Bihar has one of India's most progressive net metering policies for rooftop solar. Consumers who install solar panels can export surplus electricity back to the grid and get credit at the applicable tariff rate. Given Bihar's unmatched solar irradiance, a well-sized rooftop system can bring your net bill to near-zero during summer months when both consumption and solar generation are high. NBPDCL/SBPDCL has a separate Net Metering application process available through your local sub-division office.
Frequently Asked Questions - Bihar Electricity Bill 2026
Answers to the most searched electricity billing questions from Bihar consumers, covering tariffs, NBPDCL/SBPDCL, billing disputes, solar, and more.
People Also Ask - Bihar Electricity Bill
The most frequently asked follow-up questions from Google Search users about Bihar electricity billing, answered with precision.
State-Wise Electricity Bill Calculators
Latest 2026 tariffs - pick your state for an accurate estimate
Each Indian state has its own electricity regulator and tariff slab structure. Our calculators are built from official tariff orders - not guesswork. Select your state below for an instant, slab-wise bill estimate.
Bihar vs Other States - Electricity Bill Comparison
See how your Bihar electricity bill stacks up against UP, Bihar, Delhi, Maharashtra and Gujarat at the same consumption level. All calculations use each state's official 2026 domestic tariff slabs.
Live State-by-State Bill Comparison
Adjust units consumed below - all 6 states update instantly
| State | Starting Rate | Top Slab Rate | Fixed Charge | Key Feature |
|---|---|---|---|---|
| 🛕 Bihar | ₹1.90/unit | ₹9.75 (>400u) | ₹10/kW | Telescopic, 6-slab NBPDCL/SBPDCL tariff; FAC currently a refund |
| ⚡ Uttar Pradesh | ₹3.50/unit | ₹6.50 (>500u) | ₹60/mo | Cheaper base, lower top slab |
| 🔌 Bihar | ₹4.60/unit | ₹7.00 (>400u) | ₹50/mo | Simpler 4-slab structure |
| 🏙️ Delhi | ₹3.00/unit | ₹8.00 (>400u) | ₹20/mo | Heavy subsidies apply; low base |
| 🌊 Maharashtra | ₹3.72/unit | ₹11.00 (>500u) | ₹100/mo | High top slab, high fixed charge |
| 🦁 Gujarat | ₹4.00/unit | ₹8.00 (>300u) | ₹55/mo | Moderate; DGVCL/PGVCL rates |
Bihar Electricity Bill Calculator – How It Works
Everything you need to know - from inputs to slab math to final bill
About the Calculator
This tool calculates your Bihar electricity bill using the official BERC (Bihar Electricity Regulatory Commission) tariff slabs for 2025–26. It covers both distribution companies - NBPDCL (North Bihar) and SBPDCL (South Bihar) - which follow an identical unified tariff structure.
Unlike generic calculators, every charge component is computed separately: energy charges slab-by-slab, electricity duty as a flat per-unit amount, FAC on all units, and flat fixed/meter charges. This matches exactly how NBPDCL/SBPDCL bills are generated.
- Telescopic slab billing - each unit priced at its own slab rate
- Covers domestic and commercial connection types
- Editable slab rates - test custom tariff scenarios
- Visual charts for slab cost breakdown and multi-unit comparison
- Works offline after first load - no server calls during calculation
Why NBPDCL/SBPDCL Tariff, Not Estimated Rates
Many online calculators use rounded or outdated per-unit figures. This calculator sources slabs directly from NBPDCL/SBPDCL's most recent tariff order. The current domestic structure - ₹1.90, ₹3.00, ₹4.50, ₹6.00, ₹8.75, and ₹9.75 per unit across six slabs - is verified against official NBPDCL/SBPDCL billing documentation.
FAC (currently ≈ −₹0.13/unit, a refund) and Electricity Duty (₹0.06/unit flat) are separately applied, as they appear on your actual bill. This gives you an estimate accurate to within 2–4% of your real NBPDCL/SBPDCL bill - far more precise than flat per-unit calculators.
Last verified: June 2026 · Source: NBPDCL/SBPDCL Tariff Order 2025–26
How to Use the Bihar Electricity Bill Calculator
What Are Slabs in Electricity Billing?
Electricity slabs are consumption ranges, each with a fixed per-unit rate. Bihar uses a telescopic slab system - meaning each slab rate applies only to units within that range. Your total consumption is never multiplied by a single rate.
This system protects low-income households. A family using 25 units stays in the ₹1.90 slab entirely. A household using 1125 units pays ₹1.90 for the first 30, ₹3.00 for the next 45, ₹4.50 for the next 50, and ₹6.00 for the remaining 25 - not ₹6.00 across all 1125 units.
The financial implication is significant: crossing a slab threshold costs only the marginal rate, not a blanket increase. This is why staying just below key thresholds (30, 75, 125, 225, 400 units) matters for your bill.
Bihar 2026 Slab Structure (Visual)
Bar widths show relative rate - not unit count. Each slab is billed independently.
Example: How a 250-Unit Bihar Bill Is Calculated
Here's a step-by-step breakdown for a domestic consumer who used 2125 units in June 2026 in Patna (SBPDCL circle).
⚠️ Minor rounding differences (±₹2–5) may appear on your actual NBPDCL/SBPDCL bill due to billing system precision.
Frequently Asked Questions
🌐 Multi-Language Support
The electricbillcalculate.in platform offers calculator pages in Hindi, Marathi, Tamil, Telugu, Punjabi, Gujarati, and other regional languages - so consumers across India can read their bill breakdown in their native language without needing to translate.
🌙 Dark Mode & Theme Support
Switch between light and dark themes using the button in the top navigation. Your preference is saved to your browser's local storage and restored on your next visit - no account needed. Both themes are fully accessible with proper contrast ratios.
Preference saved locally - no cookies, no tracking.
Why Use This Calculator Over Others
Official Tariff Data
Built directly from NBPDCL/SBPDCL's 2025–26 tariff order. Not estimates - actual approved rates with correct slab boundaries.
Fully Editable Slabs
Change any rate, add slabs, or adjust fixed charges to model future tariff hikes or compare different scenarios.
Rich Visual Charts
Pie, bar, and line charts show your bill composition and how costs change across consumption levels - not just a number.
Mobile-First Design
Works perfectly on all screen sizes. No app download, no login, no ads - just fast, clean calculation on any device.
Zero Data Collection
Everything runs in your browser. No units data is sent to any server. Your usage figures stay completely private.
Regularly Updated
Tariff data is reviewed with every NBPDCL/SBPDCL order. FAC changes, new slab announcements, and duty revisions are tracked and applied.
Important Note
This calculator provides an estimated bill based on the official BERC 2025–26 tariff slabs. Actual bills issued by NBPDCL or SBPDCL may differ slightly due to billing cycle rounding, mid-year FAC revisions, applicable category-specific concessions (SC/ST household concession, free agricultural power, handloom weaver concession, etc.), security deposit adjustments, arrears, or any special notifications issued after this page's last update.
Always treat this calculator's output as a close estimate - not an official bill. For billing disputes or non-telescopic billing queries, contact your DISCOM. NBPDCL: nbpdcl.co.in · SBPDCL: sbpdcl.co.in · Helpline: 1912.
Bihar Electricity Bill - Answered in Seconds
Direct answers to the most searched questions about Bihar electricity tariff, NBPDCL, SBPDCL, and bijli billing. Includes Bihar's unique non-telescopic billing explained clearly.
As of 2026, Bihar domestic tariff (NBPDCL / SBPDCL) has 2 slabs with first 125 units FREE:
| Consumption | Rate (₹/unit) |
|---|---|
| 0 – 125 units | ₹0.00 FREE |
| Above 125 units | ₹5.52 (on ALL units) |
Source: BERC Tariff Order 2025–26. ⚠️ Non-telescopic - ₹5.52 applies on total units, not just excess above 125.
Formula: Total Bill = Energy Charges + Electricity Duty (5% of energy) + FAC (₹0.15 × all units) + Fixed Charge (₹80) + Meter Rent (₹25)
▸ Energy = 200 × ₹5.52 = ₹1,104 (non-telescopic)
▸ Duty = ₹55.20 | FAC = ₹30
▸ Fixed ₹80 + Meter ₹25 = ₹105
▸ Total ≈ ₹1,294
FAC = Fuel & Power Purchase Cost Adjustment. Currently ≈ −₹0.13 per unit - a refund, not a surcharge. Added (or subtracted) on all units consumed. Trued-up by NBPDCL/SBPDCL based on actual fuel/power purchase costs vs the approved baseline. Not subject to electricity duty. On a 200-unit bill, FAC currently subtracts ₹26.
Electricity Duty = 5% of energy charges (domestic) - not GST, not a flat per-unit levy. Applied only on chargeable energy above 125 units. Collected by NBPDCL/SBPDCL on behalf of Bihar state government.
Covers: Muzaffarpur, Darbhanga, Madhubani, Sitamarhi, Vaishali, Gopalganj, Samastipur, Bhagalpur & North Bihar
Covers: Patna, Gaya, Nalanda, Rohtas, Bhojpur, Aurangabad, Munger, Jehanabad & South Bihar
Sets uniform tariff for both DISCOMs - same rates across all 38 Bihar districts
Bihar Electricity Consumer Rights & How to File a Complaint
Under the Electricity Act 2003 and BERC regulations, Bihar electricity consumers have legally enforceable rights. If your bijli bill seems wrong - especially regarding non-telescopic billing errors - you have a clear escalation path.
Step 1: Contact Your NBPDCL/SBPDCL
Call the NBPDCL/SBPDCL helpline 1912 (toll-free, 24/7) or visit your local DISCOM section office. NBPDCL has a portal at nbpdcl.co.in and SBPDCL at sbpdcl.co.in. They are required to respond within 15 days under BERC Consumer Grievance norms.
Step 2: Consumer Grievance Forum
If DISCOM resolution is unsatisfactory, escalate to the DISCOM's Consumer Grievance Redressal Forum (CGRF), mandated under Electricity Act 2003. NBPDCL and SBPDCL both maintain CGRF offices in Muzaffarpur and Patna respectively. File online or in person.
Step 3: NBPDCL/SBPDCL Ombudsman
If CGRF fails, escalate to the BERC-appointed Electricity Ombudsman. File a petition at berc.co.in. The Ombudsman can order bill corrections, refunds, and penalties - especially useful for non-telescopic billing errors.
Your Key Rights as a Bihar Electricity Consumer
Solar Rooftop & Net Metering in Bihar - Complete 2026 Guide
Bihar's solar potential is underutilised - Patna gets 5.0–5.5 kWh/m²/day. Given Bihar's non-telescopic billing, even a small 1kW solar system that keeps consumption below 125 units can save ₹800+ monthly. PM Surya Ghar subsidy up to ₹78,000 is available.
How Net Metering Works in Bihar
When your rooftop solar system produces more electricity than you consume, the surplus units are exported to the NBPDCL/SBPDCL grid. These exported units are credited to your bill at the BERC-notified feed-in tariff rate. Your monthly bill = Units consumed from grid × tariff rate minus export credit.
Net metering in Bihar is available under BERC Net Metering Regulation and PM Surya Ghar (most homes install 1–3 kW). Exported units are compensated at the BERC-notified feed-in tariff. Both NBPDCL and SBPDCL process applications - given Bihar's non-telescopic billing, solar self-consumption is especially powerful for staying below the 125-unit threshold.
Net Metering Quick Facts - Bihar 2026
Bihar Electricity Tariff Revision History (2014–2026)
BERC revises tariffs periodically through its Tariff Order process. Here's how Bihar's domestic electricity rates have evolved - and when the non-telescopic billing structure was introduced.
Smart Meters & Prepaid Electricity in Bihar - What You Need to Know
Under the Revamped Distribution Sector Scheme (RDSS), Bihar is rolling out smart prepaid meters across Patna, Muzaffarpur, and major towns. Here's how it changes your bijli billing.
📟 What is a Smart Prepaid Meter?
A smart prepaid meter works like a mobile recharge - you top up before you consume. When your balance runs low, you receive an SMS alert. No more bill shock, no due dates to remember, and no disconnection for non-payment. The meter automatically cuts supply when balance reaches zero.
The same BERC-approved tariff slabs apply to prepaid meters - no separate "prepaid rate." The free 125-unit benefit continues. ⚠️ Under prepaid metering, Bihar's non-telescopic billing is applied in real-time - your credit balance is monitored continuously. However, the billing cycle changes from monthly to real-time, and you can track consumption daily via the NBPDCL/SBPDCL app.
Benefits of Smart Meters for Consumers
- Daily or hourly consumption visibility via app
- No estimated billing - only actual readings
- Instant low-balance SMS alerts
- Eliminates meter reading visits
- Faster fault detection by NBPDCL/SBPDCL
📍 Rollout Status in Bihar (2026)
SBPDCL has installed smart meters across Patna, Gaya, and major South Bihar towns. NBPDCL is in phased rollout across Muzaffarpur, Darbhanga, and Bhagalpur. Rural Bihar is expected to see smart meter installation by 2027–28 under RDSS central funding. Call 1912 or visit your DISCOM portal to check rollout status in your area.
Rural vs Urban Electricity Billing in Bihar
Many Bihar consumers wonder if they're paying different rates based on whether they live in a city or village. Here's the definitive answer.
Surprising Bihar Electricity Facts (That Affect Your Bill)
These statistics explain why Bihar consumers face unique billing patterns - especially in summer - and why solar has a bigger ROI here than almost anywhere in India.
🔥 Shareable Fact: Bihar vs Delhi - The Summer Bill Shock
A Delhi household using 400 units in July pays approximately ₹1,800 (with heavy government subsidies). The same 400-unit Patna household under NBPDCL/SBPDCL non-telescopic tariff pays ₹2,208 in energy charges alone - well above Delhi's subsidised rate. This difference drives strong demand for solar adoption in Bihar, where the ROI is among the best in India.
Bihar Electricity Bill - Expert Guides & Insights
Go beyond the calculator. Our expert blog covers everything about Bihar electricity billing - tariff history, saving strategies, NBPDCL/SBPDCL comparisons, and step-by-step guides for Patna, Muzaffarpur, and Gaya consumers.
Bihar Electricity Bill Calculator 2026 - Complete Guide to NBPDCL/SBPDCL Tariff, Slabs, FAC & How to Reduce Your Electricity Bill
Everything you need to know about your Bihar electricity bill in one place. We break down the NBPDCL/SBPDCL 2025–26 tariff structure, explain how FAC, fixed charges and electricity duty are calculated, compare NBPDCL vs SBPDCL, and give you 20 proven strategies to cut your monthly bill - especially during peak summer months in Patna, Muzaffarpur, and Gaya.
How to Calculate Your Bihar Electricity Bill Step-by-Step
Manual slab-by-slab calculation with worked examples for 100, 200, 300 & 500 units.
Read →What is FAC? Why Your Bihar Bill Varies Each Month
Fuel Adjustment Charge explained - how NBPDCL/SBPDCL sets it quarterly and how it affects your bill.
Read →15 Proven Ways to Reduce Your Bihar Electricity Bill in 2026
AC settings, air coolers, solar, BEE star ratings - practical tips that actually cut costs.
Read →About This Calculator - Accuracy & Data Sources
This Bihar electricity bill calculator is maintained by electricbillcalculate.in, a platform built to help Indian households understand and verify their electricity bills. All tariff data is sourced directly from the Bihar Electricity Regulatory Commission (NBPDCL/SBPDCL) Annual Tariff Orders and official NBPDCL/SBPDCL documentation.
The current rates (₹0 for the first 125 units, ₹5.52/unit non-telescopic above that) are from the BERC Tariff Order for Financial Year 2025–26, applicable to both distribution companies: NBPDCL and SBPDCL. FAC (≈ −₹0.13/unit) is verified against the DISCOMs' order dated 27 September 2025.
🔗 Official Resources & Regulatory Links
Our editorial team researches and verifies Indian state electricity tariffs directly from regulatory commission (ERC) orders and NBPDCL/SBPDCL tariff schedules, updating each calculator whenever a new tariff order, FAC revision, or government subsidy scheme is notified.
About our editorial process →⚠️ Disclaimer: This calculator provides estimates only. Your actual NBPDCL/SBPDCL bill may vary due to local surcharges, connection-specific charges, or tariff revisions not yet incorporated. Always verify with your DISCOM or the Bihar State Power Holding Company.
Patna Electricity Bill Calculator 2026 - SBPDCL Tariff
Patna and the surrounding South Bihar districts (Nalanda, Gaya, Bhojpur, Aurangabad, Buxar, Rohtas, Jehanabad, Munger, Bhagalpur, Jamui) are served by SBPDCL - South Bihar Power Distribution Company Limited. SBPDCL follows the unified BERC 2025–26 tariff for all domestic consumers.
⚡ Patna Unit Rate 2026
- 🟢 0–125 units: ₹0 (FREE) - Har Ghar Bijli Yojana
- 🔴 Above 125 units: ₹5.52/unit on ALL units (non-telescopic)
📍 Districts Under SBPDCL
Patna, Nalanda (Bihar Sharif), Rajgir, Gaya, Ara (Bhojpur), Aurangabad, Buxar, Sasaram (Rohtas), Jehanabad, Arwal, Nawada, Munger, Bhagalpur, Jamui, Lakhisarai, Sheikhpura, Banka. Pay online at sbpdcl.co.in or the official NBPDCL/SBPDCL consumer app.
💡 Patna Summer Bill Tip
In peak summer (April–June), Patna's humid heat pushes households well past 125 units with AC use, triggering the full ₹5.52/unit non-telescopic rate on your entire consumption. Keep AC at 24°C, use ceiling fans and coolers where possible, and consider rooftop solar to stay near the free threshold.
Muzaffarpur Electricity Bill Calculator 2026 - NBPDCL Tariff
Muzaffarpur and the North Bihar districts (Darbhanga, Chhapra, Motihari, Bettiah, Gopalganj, Siwan, Samastipur, Sitamarhi, Vaishali, Madhubani, Purnia, Katihar) are served by NBPDCL - North Bihar Power Distribution Company Limited. The tariff structure is identical to the BERC-unified rate applicable across both Bihar DISCOMs. Check your bill or pay online at nbpdcl.co.in.
⚡ Muzaffarpur (NBPDCL) Unit Rate 2026
- 🟢 0–125 units: ₹0 (FREE) - Har Ghar Bijli Yojana
- 🔴 Above 125 units: ₹5.52/unit on ALL units (non-telescopic)
📍 Districts Under NBPDCL
Muzaffarpur, Darbhanga, Chhapra (Saran), Motihari (East Champaran), Bettiah (West Champaran), Gopalganj, Siwan, Samastipur, Sitamarhi, Vaishali (Hajipur), Begusarai, Khagaria, Madhubani, Purnia, Katihar, Kishanganj, Araria, Saharsa. Also see the main Bihar electricity bill calculator above for the full breakdown.
☀️ Solar Opportunity in Muzaffarpur
North Bihar gets strong solar irradiance outside the monsoon months. A 1–2 kW rooftop system can keep many households within the 125-unit free slab permanently, especially with PM Surya Ghar subsidy support and net metering through NBPDCL.
Try the Bihar Electricity Bill Calculator Now
Enter your units and get a full Bihar NBPDCL/SBPDCL bijli bill estimate in under 10 seconds. First 125 units FREE! ⚠️ See exactly what happens when you cross 125 units with non-telescopic billing. No login required.
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