Electricity Bill Calculator (India)
Estimate your monthly electricity bill for all Indian states. Typical household consumption for a family of 4 is 200–400 kWh/month.
Most homes use a domestic single-phase connection.
Below 0.90 may incur penalty charges.
Monthly demand charges apply based on contract.
Estimated Bill Amount
₹ 0.00
Bill Calculation Breakdown (Karnataka)
| Slab (Units) | Rate (₹/Unit) | Units in Slab | Cost (₹) |
|---|
Your Consumption Trend
Enter your past 5 months' usage to visualize your consumption pattern.
Appliance-wise Bill Calculator
Identify which appliances consume the most electricity.
Air Conditioner
1.5 Ton (1500W)
Refrigerator
200L (150W)
Runs 24/7 automatically.
Television
55" LED (80W)
Geyser
15L (2000W)
Consumption Breakdown
Total Consumption: 0 kWh
Estimated Bill: ₹0
💡 Saving Tip
"Energy saved is energy generated."
Dr. APJ Abdul Kalam
Former President of India
📊 Bill Comparison & Tracking
Compare your current bill with the previous month to track consumption patterns.
Current Month
Previous Month
Time-of-Day (ToD) Savings
See if you can save money with a ToD tariff plan. (Total must equal your consumed units above).
☀️ Solar ROI Calculator
Find out how quickly a solar installation will pay for itself based on your current bill.
System Size
0 kW
Payback Period
0 Years
25-Year Profit
₹0
Smart Meter Scan (OCR)
Upload a photo of your meter to read the units automatically.
Bill History
Saves your last 10 calculations to your browser.
🔍 How This Calculator Works
Understanding the science behind your electricity bill calculation
📊 Step 1: Input Your Data
The calculator collects essential information about your electricity usage:
- • State Selection: Each Indian state has different electricity tariffs set by their respective State Electricity Regulatory Commission (SERC)
- • Connection Type: Domestic (residential), Commercial (shops/offices), Industrial (factories), 3-Phase, or HT Industrial
- • Units Consumed: Total kWh (kilowatt-hours) used during the billing period. Found on your electricity meter
- • Connected Load: Total capacity in kW of all electrical appliances connected to your meter
- • Power Factor: (For commercial/industrial) Efficiency ratio between actual power used and apparent power (0.70 to 1.00)
- • Contract Demand: (For HT connections) Maximum power demand agreed with utility in kVA
- • Season: Some states have different rates for summer (March-June) and winter (November-February)
⚡ Step 2: Progressive Slab Calculation
India uses a progressive tariff system where different consumption ranges have different rates:
Example: Karnataka (BESCOM) Domestic Tariff
| Slab Range | Rate (₹/Unit) | Example Cost |
|---|---|---|
| 0-50 units | ₹4.35 | ₹217.50 (for 50 units) |
| 51-100 units | ₹5.75 | ₹287.50 (for next 50 units) |
| 101-200 units | ₹7.70 | ₹770.00 (for next 100 units) |
| 201-400 units | ₹8.75 | ₹1,750.00 (for next 200 units) |
| Above 400 units | ₹9.25 | ₹9.25 per additional unit |
📝 How It Works: If you consume 250 kWh:
- • First 50 units × ₹4.35 = ₹217.50
- • Next 50 units (51-100) × ₹5.75 = ₹287.50
- • Next 100 units (101-200) × ₹7.70 = ₹770.00
- • Next 50 units (201-250) × ₹8.75 = ₹437.50
- • Energy Charges Total = ₹1,712.50
🔌 Step 3: Fixed Charges Calculation
Fixed charges are monthly fees based on your Connected Load (total kW capacity):
Karnataka Fixed Charges
- • 0-1 kW: ₹110/month
- • 1.01-5 kW: ₹220/month
- • Above 5 kW: ₹330/month
Delhi Fixed Charges
- • 0-2 kW: ₹125/month
- • 2.01-5 kW: ₹140/month
- • 5.01-15 kW: ₹175/month
- • Above 15 kW: ₹250/month
💡 Note: Fixed charges apply even if you consume zero units. They cover meter maintenance, billing, and infrastructure costs.
💰 Step 4: Additional Charges & Adjustments
🔥 FPPCA (Fuel & Power Purchase Cost Adjustment)
Variable charge that adjusts for fluctuating fuel costs (coal, gas, hydro).
Formula: Total Units × FPPCA Rate
Example: 250 kWh × ₹0.65 = ₹162.50
Rates: Karnataka ₹0.65, Delhi ₹0.22, Tamil Nadu ₹0.15
⚙️ Power Factor Penalty/Incentive (Commercial/Industrial Only)
Power factor measures electrical efficiency. Minimum required: 0.90
⚠️ Penalty (PF < 0.90)
1% penalty for every 0.01 below 0.90
PF = 0.85 → 5% penalty on energy + fixed charges
✅ Incentive (PF > 0.95)
0.5% rebate for every 0.01 above 0.95
PF = 0.98 → 1.5% rebate
📈 Demand Charges (HT Industrial Only)
Charged based on maximum demand during billing cycle.
Formula: Contract Demand (kVA) × Demand Rate (₹/kVA)
Example: 500 kVA × ₹350/kVA = ₹175,000/month
🎁 Step 5: Subsidies & Tax
Karnataka - Gruha Jyothi Scheme
Free electricity for households consuming up to 200 units
✓ Up to 200 units: 100% subsidy (capped at ₹200)
Example: Bill ₹1,200 → Pay ₹1,000 (₹200 subsidy)
Delhi - Free Electricity Scheme
Subsidized electricity for low consumption households
✓ 0-200 units: 100% free (₹0 bill)
✓ 201-400 units: 50% subsidy (max ₹800)
✗ Above 400 units: No subsidy
💵 Electricity Tax / Duty
Applied on total charges (varies by state):
9%
5%
10%
Note: Some states apply tax before subsidy, some after. Calculator handles both methods.
🧮 Step 6: Final Bill Calculation
Complete Bill Breakdown Example (Karnataka, 250 kWh)
| Energy Charges (Slab-wise) | ₹1,712.50 |
| Fixed Charges (1 kW) | ₹110.00 |
| FPPCA (250 × ₹0.65) | ₹162.50 |
| Subtotal Before Tax | ₹1,985.00 |
| Electricity Tax (9%) | ₹178.65 |
| Gruha Jyothi Subsidy | -₹200.00 |
| FINAL BILL AMOUNT | ₹1,963.65 |
📊 Per Unit Cost: ₹1,963.65 ÷ 250 kWh = ₹7.85 per unit
📅 Per Day Cost: ₹1,963.65 ÷ 30 days = ₹65.45 per day
✨ Why This Calculator is Accurate
✓ Updated Tariff Data
Uses latest 2025 electricity tariffs from official SERC notifications for each state
✓ Progressive Slab Logic
Correctly distributes units across multiple tariff slabs for accurate calculation
✓ All Components Included
Accounts for energy charges, fixed charges, FPPCA, tax, subsidies, power factor, and demand charges
✓ State-Specific Rules
Applies correct tax timing (before/after subsidy) and state-specific schemes accurately
🏠 3 Real Indian Examples
See how the calculator works with real-life scenarios from across India
🏘️ Example 1
Bangalore Family
Karnataka (BESCOM)
📋 Input Parameters:
🧮 Bill Calculation Breakdown:
✅ Analysis: With Gruha Jyothi subsidy, this family saves ₹200/month! Without subsidy, bill would be ₹1,829.89
🏢 Example 2
Delhi Shop Owner
Delhi (BRPL)
📋 Input Parameters:
🧮 Bill Calculation:
💡 Analysis: Commercial rates are higher (₹8.50/kWh without subsidy). First 200 units qualify for 50% subsidy relief!
🏭 Example 3
Chennai Factory
Tamil Nadu (TANGEDCO)
📋 Input Parameters:
🧮 Bill Calculation:
⚠️ Analysis: Power factor 0.85 adds 5% penalty (₹1,483.75)! Improving to 0.95 would save ₹2,227.13/month!
Improvement ROI: Power factor correction equipment investment pays back in 2-3 months
📊 Bangalore Example Learnings
- ✓ Gruha Jyothi subsidy saves ₹200/month
- ✓ Summer surcharge increases bill by 15%
- ✓ Fixed charges apply regardless of consumption
- ✓ Effective rate: ₹9.05/unit (after all charges)
💼 Delhi Shop Example Learnings
- ✓ Commercial rates are 2.83x higher than domestic
- ✓ First 200 units get 50% subsidy benefit
- ✓ Delhi subsidy saves ₹90 in this example
- ✓ Commercial tax is 10% (vs 9% domestic)
🏭 Chennai Factory Lessons
- ✓ Power factor penalty adds 5% to bill
- ✓ First 100 units completely FREE!
- ✓ 5,000 kWh industrial consumption is massive
- ✓ Improving PF from 0.85→0.95 saves ₹2,227/month
📈 Comparison of All 3 Examples
| Metric | Bangalore (Domestic) | Delhi (Commercial) | Chennai (Industrial) |
|---|---|---|---|
| State | Karnataka | Delhi | Tamil Nadu |
| Units Consumed | 180 kWh | 600 kWh | 5,000 kWh |
| Energy Charges | ₹1,121.00 | ₹2,800.00 | ₹28,725.00 |
| Final Bill | ₹1,629.89 | ₹3,289.20 | ₹34,906.00 |
| Cost per Unit | ₹9.05/kWh | ₹5.49/kWh | ₹6.98/kWh |
| Per Day Cost | ₹54.33 | ₹109.64 | ₹1,163.53 |
💡 Quick Tips from These Examples
Maximize Subsidies
Bangalore's Gruha Jyothi saves ₹200/month. Know your state's schemes!
Watch Power Factor
Chennai's PF penalty costs ₹1,483.75/month. Correction pays off fast!
Monitor Seasonal Changes
Summer surcharge adds 15% to Bangalore bills. Plan accordingly!
Higher Consumption = Lower per-Unit Rate
Delhi shop pays ₹5.49/unit vs Bangalore's ₹9.05 (despite commercial rates!)
⚡ 5 Pro Tips to Reduce Your Electricity Bill by 30-40%
Expert strategies from electricity professionals to cut your monthly bills and save thousands annually
Load Shifting
Move consumption to off-peak hours
💡 The Strategy
🕐 Peak Hours (Avoid These):
6 PM - 10 PM (Usually 20-30% higher rates)
- ❌ Don't use AC during peak hours
- ❌ Avoid using geyser/water heater
- ❌ Don't use heavy appliances (microwave, mixer)
- ❌ No laundry or dishwashing
🌙 Off-Peak Hours (Use These):
10 PM - 8 AM (40-50% cheaper rates)
- ✅ Run water heater at night
- ✅ Do laundry after 11 PM
- ✅ Charge devices overnight
- ✅ Do cooking prep early morning
💰 Potential Savings: ₹2,000 - ₹4,000/month
30-40% reduction with shift to ToD tariff
AC Optimization
AC is your biggest power consumer
🎯 Smart AC Usage
🌡️ Thermostat Settings
💡 Each 1°C increase = 3-5% energy saving
⏱️ Runtime Control
Current: 8 hrs/day
Use Timer: 7 hrs/day
Savings: -₹1,500/month
Pro Tip: Use smart AC controller
🔧 Maintenance
- ✓ Clean filters monthly
- ✓ Check refrigerant level
- ✓ Service annually
- ✓ Seal room properly
Saves: 10-15%
🏠 Room Setup
- ✓ Close doors & windows
- ✓ Use thermal curtains
- ✓ Avoid direct sunlight
- ✓ Use ceiling fan with AC
Saves: 15-20%
💰 Potential Savings: ₹3,000 - ₹6,000/month
45-50% reduction in AC consumption
LED Revolution
Lighting is 15-20% of bills
💡 Switch to LED
| Type | Wattage | Cost/Month | Lifespan |
|---|---|---|---|
| 🔴 Incandescent (60W) | 60W | ₹50 | 1 yr |
| 🟡 CFL (15W) | 15W | ₹12.50 | 5 yrs |
| 🟢 LED (8W) | 8W | ₹6.67 | 10 yrs |
🏠 Home Setup (10 bulbs)
🎁 Government UJALA Scheme
Get LED bulbs at ₹70-90 each (vs ₹400-600 market price)
Status: Available in most Indian states
Action: Visit your state's official UJALA website
💰 Potential Savings: ₹600 - ₹1,200/year
+ Payback period: 6-8 months
Solar Water Heater
Heating consumes 20-30% of bill
☀️ Solar Water Heater ROI
🔴 Electric Geyser
- Cost: ₹2,000-4,000
- Power: 2000W
- Usage: 2 hrs/day
- Monthly Cost: ₹2,400-3,600
- Lifespan: 3-5 years
🟢 Solar Water Heater
- Cost: ₹25,000-40,000
- Subsidy: ₹5,000-15,000
- Net Cost: ₹15,000-25,000
- Monthly Cost: ₹500-700
- Lifespan: 15-20 years
📊 Financial Comparison (Per Year)
🎁 Government Subsidy
PMAY-G, State schemes offer 40-70% subsidy
Contact: MNRE (Ministry of New and Renewable Energy)
💰 Annual Savings: ₹20,400 - ₹37,200
+ Tax benefits + 15-20 year lifespan
Smart Appliances
IoT devices reduce consumption 15-25%
📱 Smart Technology
⭐ Buy 5-Star Rated Appliances
📍 Smart Plugs
Schedule devices, prevent phantom load
Savings: 5-10%
📊 Smart Meters
Real-time consumption tracking
Awareness: 10-15%
🤖 Smart AC
Auto-adjust based on room occupancy
Savings: 15-20%
💡 Smart Lights
Auto-off when room empty + dimming
Savings: 20-30%
👻 Kill Phantom Load
Devices in standby consume 5-10% of your bill!
Solution: Use power strips with switches
📅 Implementation Priority
💰 Potential Total Savings: ₹5,000 - ₹15,000/month
Combined impact: 50-60% reduction in 2-3 years
🚀 Quick Wins (Month 1)
- 1. Stop phantom load (-₹400)
- 2. AC thermostat to 26°C (-₹600)
- 3. Off-peak load shift (-₹800)
- 4. Close AC doors properly (-₹500)
Month 1 Savings: ₹2,300
📈 Medium Term (3-6 Months)
- 1. Replace all bulbs with LED (-₹800)
- 2. Install smart plugs (-₹500)
- 3. Get smart meter (-₹200 awareness)
- 4. AC servicing & maintenance (-₹400)
Additional Savings: ₹1,900
🎯 Long Term (1-2 Years)
- 1. Install solar water heater (-₹2,000)
- 2. Upgrade to 5-star appliances (-₹1,500)
- 3. Install rooftop solar panels (-₹4,000)
- 4. Smart AC controller (-₹1,000)
Total Annual Savings: ₹51,600+
💡 Your Action Plan
Implement these 5 tips to reduce your electricity bill by 30-60% in the next 2 years
❓ Frequently Asked Questions
Find answers to common questions about electricity bills and this calculator
⚡ What is kWh? How is it different from kW? ▼
💡 kW (Kilowatt) = POWER
The rate at which an appliance consumes electricity at any given moment.
Example: Your AC runs at 1.5 kW
⚙️ kWh (Kilowatt-hour) = ENERGY
The total electricity consumed over time. This is what you pay for.
Formula: Power (kW) × Time (hours) = Energy (kWh)
Example: AC (1.5 kW) × 8 hours = 12 kWh
Analogy: kW = Speed of car | kWh = Distance traveled
📊 How is my electricity bill calculated? ▼
📋 Bill Calculation Formula:
Energy Charges = Units × Tariff Rate (Progressive)
Fixed Charges = Monthly fee (based on load)
FPPCA = Fuel surcharge
Tax = Applied on subtotal
Subsidy = Applicable benefits
Total Bill = (Energy + Fixed + FPPCA + Other) × (1 + Tax %) - Subsidy
Note: Tax and subsidy order varies by state. Some apply tax before subsidy, some after.
🎯 What is a progressive/slab tariff? ▼
📈 How It Works:
Different consumption ranges have different rates. The rate increases as you consume more (encourages conservation).
Example (Karnataka):
- 0-50 units: ₹4.35 per unit
- 51-100 units: ₹5.75 per unit
- 101-200 units: ₹7.70 per unit
- 200+ units: ₹8.75+ per unit
So 150 kWh = (50×4.35) + (50×5.75) + (50×7.70) = ₹937.50
Benefit: Low consumers pay less per unit. High consumers pay more to encourage conservation.
💰 What is FPPCA and why does it change monthly? ▼
🔥 FPPCA = Fuel & Power Purchase Cost Adjustment
A variable charge that adjusts for changing fuel prices (coal, natural gas, etc.) used in power plants.
📊 Why It Changes:
- • Coal prices fluctuate globally
- • Seasonal hydro power availability
- • Natural gas import costs
- • Renewable energy mix variations
Current Rates: Karnataka ₹0.65 | Delhi ₹0.22 | Tamil Nadu ₹0.15
🎁 What are subsidies and how do they work? ▼
🏛️ Government Subsidies:
Government programs that reduce your electricity bill by giving discounts or free electricity to eligible consumers.
📍 Examples:
Eligibility: Usually based on consumption slab or income. Check your state's official website.
⚙️ What is Power Factor and why does it matter? ▼
🎯 Power Factor Definition:
Ratio of real power (actual work done) to apparent power (total power drawn). Ranges from 0 to 1.
⚠️ Penalty & Incentive:
- Below 0.90: 1% penalty for every 0.01 below 0.90
- Example: PF = 0.85 → 5% penalty on your bill
- Above 0.95: 0.5% incentive (rebate) for every 0.01 above
Note: Only applies to Commercial & Industrial connections. Not for domestic.
🏭 What are Demand Charges? ▼
📈 What Are Demand Charges:
Additional charge based on the maximum power demanded during the billing month, not total consumption.
🏢 Who Pays:
Primarily HT (High Tension) Industrial consumers. Rarely for small commercial/domestic.
💰 Example:
Contract Demand: 500 kVA | Rate: ₹350/kVA | Charge: 500 × ₹350 = ₹175,000/month
📱 How accurate is this calculator? ▼
✅ Accuracy Level: 95%+
Calculator uses official 2025 tariff rates from State Electricity Regulatory Commissions (SERC).
📋 What's Included:
- ✓ Progressive slab tariffs
- ✓ Fixed charges
- ✓ FPPCA surcharge
- ✓ Electricity tax
- ✓ State-specific subsidies
- ✓ Power factor penalty/incentive
Disclaimer: Actual bill may vary due to seasonal adjustments, special schemes, or municipal taxes.
🔍 Why is my bill higher than expected? ▼
📊 Common Reasons:
- 1. Seasonal Surcharge: Summer (15-30% higher), Winter (10-20% lower)
- 2. Higher Slab: Each 100 units costs more (progressive tariff)
- 3. Delayed Payment: Late fee + interest charges
- 4. Meter Issues: Old meter may have leakage (consume more)
- 5. Appliance Efficiency: Old AC/Fridge uses 2-3x more power
- 6. Phantom Load: Devices in standby consume 5-10% of bill
Solution: Check your meter reading, compare with previous months, and use our calculator for verification.
💡 What's the difference between domestic and commercial rates? ▼
🏠 Domestic (Residential):
- Lower rates (subsidized by government)
- Typically ₹3-9 per unit
- Fewer charges (no power factor penalty)
- Subsidies like Gruha Jyothi available
🏢 Commercial:
- Higher rates (no subsidy)
- Typically ₹7-12 per unit
- Extra charges: Power factor, HVAC equipment, etc.
- Higher fixed charges & tax
Cost Difference: Commercial rates are typically 2-3x higher than domestic.
☀️ How does solar rooftop system affect my bill? ▼
🔆 Net Metering Concept:
Your solar system generates electricity during day. Excess goes back to grid. You get credit in bill (net billing).
📊 Example (3 kW System):
- Daily generation: 12-15 kWh (5 hours × 3 kW)
- Monthly savings: ₹5,400-6,750 at ₹6/unit
- Annual savings: ₹64,800-81,000
- System cost: ₹1,80,000-2,40,000
- Payback: 2.5-3.5 years
Government Subsidy: 40% on up to 3 kW | 20% on 3-10 kW
🔌 What are fixed charges and why do I pay them? ▼
💰 What Are Fixed Charges:
Monthly fee charged based on your Connected Load (total kW capacity), independent of consumption.
🏗️ Why Do Utilities Charge Fixed Fees:
- • Meter maintenance & reading
- • Distribution infrastructure
- • Billing & customer service
- • Network maintenance
📊 Example (Karnataka):
- 0-1 kW: ₹110/month (even if you use 0 units!)
- 1.01-5 kW: ₹220/month
- 5+ kW: ₹330/month
🌡️ What is Time-of-Day (ToD) tariff? ▼
⏰ ToD Tariff Concept:
Different rates for different hours of the day based on demand patterns.
📊 Typical ToD Rates:
- 🔴 Peak (6PM-10PM): ₹8-10/unit (High demand)
- 🟡 Normal (8AM-6PM, 10PM-11PM): ₹6/unit
- 🟢 Off-Peak (11PM-8AM): ₹3-4/unit (Low demand)
Benefit: Shift consumption to off-peak hours and save 30-40%!
🎯 How can I reduce my electricity bill? ▼
⚡ Quick Wins (Save ₹2,000-3,000/month):
- ✓ Set AC to 26-28°C (3-5% per °C)
- ✓ Use ceiling fan with AC
- ✓ Replace 10 bulbs with LED (₹600/year)
- ✓ Kill phantom load (unplug standby devices)
- ✓ Close AC doors & windows
💰 Long Term (Save ₹5,000-10,000/month):
- ✓ Solar water heater (₹20,000 investment)
- ✓ Rooftop solar system (₹1,80,000 investment)
- ✓ 5-star appliances
- ✓ Smart AC controller
📞 What if I have issues with my bill? ▼
📋 Steps to Dispute:
- 1. Note meter reading & bill amount
- 2. Compare with previous months (use calculator)
- 3. Check for seasonal surcharge
- 4. Contact your power utility customer care
- 5. File written complaint if no resolution
- 6. Escalate to State Electricity Commission (SEC)
📞 Contact Information:
- • BESCOM: 1912 (toll-free) | bescom.co.in
- • BRPL/TPDDL (Delhi): 19123 | brpl.co.in
- • TANGEDCO: www.tangedco.gov.in
🔐 Is my data safe on this calculator? ▼
✅ Safety & Privacy:
- ✓ No data collection: Your inputs are NOT saved anywhere
- ✓ No server transmission: All calculations happen in your browser
- ✓ No cookies: We don't track you
- ✓ No ads: Pure calculator, no advertising
- ✓ No sharing: Your information is 100% private
Fun Fact: You can use this calculator offline! Download once, use anytime.
💬 Still Have Questions?
We're here to help! Reach out to us for any doubts about your electricity bill or this calculator.
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Visit CalcWise →Disclaimer
📌 Estimate Only
This calculator provides an estimated electricity bill based on 2025 tariff rates. Your actual bill may vary due to seasonal adjustments, local taxes, special schemes, and meter-specific factors.
📊 Data Accuracy
We use official tariff data from State Electricity Regulatory Commissions (SERC). However, rates may change without notice. Verify amounts with your utility bill for accuracy.
🔒 No Liability
We are not responsible for errors, omissions, or decisions made based on this calculator's results. Use it as a reference tool only. For official details, contact your electricity supplier.
✅ Privacy Assured
This calculator processes all data locally in your browser. We do not collect, store, or share any personal information. Your calculations are 100% private.
⚡ Variable Charges
Electricity bills include FPPCA (Fuel surcharge) which changes monthly. Actual bills may be 5-15% higher or lower than estimates depending on supply cost fluctuations.