⚡ 100 Units Electricity Bill in India
State-wise monthly cost comparison · FY 2025-26 · All major DISCOMs
₹30
Cheapest (Tamil Nadu)
₹398
Avg (7 states)
₹660
Priciest (Uttar Prad)
📊 100 Units Bill — 7 States
Includes fixed/demand charge. Residential domestic category. FY 2025-26 SERC tariff orders.
| State | DISCOM | Monthly Bill | Full Rates |
|---|---|---|---|
| Delhi | BRPL/BYPL/TPDDL | ₹425 | Full rates → |
| Maharashtra | MSEDCL | ₹263 | Full rates → |
| Karnataka | BESCOM | ₹528 | Full rates → |
| Tamil Nadu cheapest | TANGEDCO | ₹30 | Full rates → |
| Uttar Pradesh priciest | PVVNL/DVVNL | ₹660 | Full rates → |
| Gujarat | DGVCL/MGVCL | ₹267 | Full rates → |
| Rajasthan | JDVVNL/AVVNL | ₹616 | Full rates → |
🧮 Calculate Your Bill
Full Calculator — all states, appliance-wise, solar ROI →🏠 Who Uses 100 Units per Month?
Typical household: 4–5 LED lights, 2 fans, CRT/small LED TV (4 hr), basic 165L fridge. 1BHK without AC.
💡 Tips to Reduce a 100-Unit Monthly Bill
- →A 5-star fridge uses 30–40% less energy than 3-star. Payback in 2–3 years.
- →Set your fridge temperature to 3–4°C (not colder) — saves 5% per degree.
- →Use natural light during day hours — reduces lighting load by 40–60%.
- →Check if your state offers subsidised connections — Delhi, Tamil Nadu, Karnataka have generous schemes.
❓ FAQ — 100 Units Electricity Bill India
How much is the electricity bill for 100 units per month in India?
The bill for 100 units varies by state. Tamil Nadu: ₹30 (first 100 units FREE), Gujarat: ₹267, Maharashtra: ₹263, Delhi: ₹425, UP: ₹660, Karnataka: ₹528, Rajasthan: ₹616. National average across major states: approximately ₹398/month including fixed charges.
Which state has the cheapest electricity at 100 units?
Tamil Nadu (TANGEDCO) has the cheapest electricity at 100 units — ₹30/month (first 100 units FREE). Gujarat is the second cheapest at ₹267/month. These states benefit from government subsidies and relatively lower state electricity taxes.
Which state has the most expensive electricity at 100 units?
Uttar Pradesh has the highest bill at 100 units — ₹660/month. High electricity rates in Uttar Pradesh reflect higher cross-subsidies, distribution infrastructure costs, or higher state VAT on power.
How do I reduce my 100 units/month electricity consumption?
A 5-star fridge uses 30–40% less energy than 3-star. Payback in 2–3 years. Set your fridge temperature to 3–4°C (not colder) — saves 5% per degree. At your consumption level, the biggest gains come from: upgrading to BEE 5-star rated appliances and fixing phantom loads.
What is the fixed charge in the electricity bill and why do I pay it even if I use less?
The fixed/demand charge is a monthly fee paid regardless of consumption — it covers grid maintenance, transformer costs, and distribution infrastructure. It ranges from ₹20–₹125/month depending on your state. For 100 units/month consumers, the fixed charge is 79 on average across states.
🗺️ Your State Calculator
Get exact slab rates, fixed charges, and a state-specific calculator for your DISCOM.
How This Calculator Works
A simple 3-step process to get accurate financial results instantly
Enter Your Details
Fill in the required fields with your current financial data, income, or investment amounts
Instant Calculation
Our calculator processes inputs using verified financial formulas and current India-specific rates
Get Your Results
View detailed breakdowns, comparisons, and actionable insights to make informed financial decisions
📐 The Formula
Calculations use standard financial formulas updated with FY 2025-26 India tax slabs and rate parameters
🇮🇳 3 Real Indian Examples
See how real Indians use the 100 Units Electricity Bill India — State-wise Cost FY 2025-26
👤 Example 1 — Typical Indian Salaried Professional
A 32-year-old software professional in Bengaluru uses this calculator to plan finances:
| Profile | IT professional, ₹15 LPA, married with 1 child |
| Goal | Financial planning for major life milestone |
| Result | Clear breakdown of costs, taxes, and savings impact |
| Action taken | Restructured financial plan based on calculator output |
| Annual saving | Optimised by ₹60,000–₹1,50,000 |
👤 Example 2 — Self-Employed Professional, Mumbai
A 40-year-old consultant in Mumbai uses this calculator for business planning:
| Profile | Self-employed consultant, ₹25 LPA income |
| Challenge | No employer-provided benefits, must plan independently |
| Calculator use | Understood exact tax and investment implications |
| Outcome | Reduced tax burden by 25% through proper planning |
👤 Example 3 — Retired Senior Citizen, Delhi
A 62-year-old retired government officer in Delhi plans post-retirement finances:
| Profile | Retired at 60, pension ₹45,000/month, savings ₹35 lakh |
| Need | Calculate if savings are sufficient for 25-year retirement |
| Calculator output | Safe withdrawal = ₹35,000/month additional from savings |
| Planning | Invested in SCSS and SWP mutual fund for regular income |
💡 5 Expert Tips
Professional advice to get the most from 100 Units Electricity Bill India — State-wise Cost FY 2025-26
Always Calculate Before Committing — Never Estimate Mentally
The human brain is poor at compound interest and percentage calculations. A ₹1,000/month difference in EMI seems small but means ₹3.6L more interest over 30 years. Always run the numbers through a calculator before signing loan documents, investment forms, or insurance policies.
Review Your Financial Calculations Annually
Interest rates change, tax slabs update, inflation shifts. Re-run all your financial calculations every April (start of financial year) to ensure your assumptions remain valid. A home loan rate change from 8.5% to 9.5% on ₹50L increases total interest by ₹8+ lakh.
Compare Multiple Scenarios Before Deciding
Don’t use a calculator to confirm a decision you’ve already made. Use it to COMPARE scenarios: short tenure vs long, prepay vs invest, old vs new tax regime. The most valuable insight often comes from the scenario you didn’t expect to choose.
Include All Hidden Costs in Your Calculations
Financial calculations often omit: processing fees (0.5-2% for loans), brokerage and taxes (for investments), maintenance and insurance (for property). Always add 5-10% buffer to calculated costs for realistic planning. Underestimating costs is the #1 planning mistake.
Consult a SEBI-Registered Advisor for Major Decisions
Calculators provide projections based on assumptions. For decisions involving ₹5 lakh+, consult a SEBI-registered Investment Advisor (RIA) or Chartered Accountant. Find SEBI-registered advisors at sebi.gov.in. Avoid commission-based agents who earn from products they recommend.
❓ Frequently Asked Questions
Everything you need to know about 100 Units Electricity Bill India — State-wise Cost FY 2025-26
Q1. How accurate are the calculator results?
Our calculators use industry-standard financial formulas validated against RBI guidelines and financial planning standards. Results are accurate for the inputs provided. Real-world outcomes may vary due to changing interest rates, market conditions, and regulatory changes.
Q2. Are my inputs stored or shared?
No. All calculations happen entirely in your browser. We do not store, transmit, or share any financial data you enter. Each calculator session is private and temporary — refreshing the page resets all inputs.
Q3. How often is this calculator updated?
Our calculators are updated in line with major financial events: Union Budget announcements, RBI REPO rate changes, SEBI regulations, and quarterly government scheme rate revisions. Check the “Last Updated” date on each calculator.
Q4. What should I do after getting the calculator results?
Calculator results are for planning and comparison purposes. For major financial decisions (above ₹5 lakh), consult: a SEBI-registered investment advisor (RIA) for investment decisions, a Chartered Accountant (CA) for tax planning, or a bank/NBFC for loan-related decisions.
Q5. Can I use this calculator for filing ITR or official submissions?
No. These calculators provide estimates for financial planning only. For official tax submissions, use the Income Tax Department portal (incometax.gov.in). For loan applications, use the official lender’s published rates and terms. Our calculations should not be used as official financial documentation.
Q6. What is the difference between gross return and XIRR?
Gross return calculates total percentage gain from start to end. XIRR (Extended Internal Rate of Return) accounts for the timing of cash flows (useful for SIP where you invest different amounts at different times). XIRR gives the equivalent annual compounded return — it’s the most accurate metric for comparing investments.
Q7. How do I calculate inflation-adjusted real returns?
Real Return = [(1 + Nominal Return%) / (1 + Inflation%)] − 1. Example: FD at 7% with 6% inflation gives real return of [(1.07/1.06)−1] = 0.94% — barely positive. Equity at 12% with 6% inflation gives real return of [(1.12/1.06)−1] = 5.66% — the actual increase in purchasing power.
Q8. Should I consult a financial advisor before making investment decisions?
Yes, for significant financial decisions. Find SEBI-registered Investment Advisors at sebi.gov.in under “Intermediaries/Market Infrastructure Institutions.” Fee-only advisors (who charge a flat fee rather than commission) give unbiased advice. This calculator helps you understand numbers; an advisor helps with comprehensive planning.
Q9. What is compound interest and why does it matter?
Compound interest is interest calculated on both the principal and previously earned interest. Einstein reportedly called it the “8th wonder of the world.” ₹1 lakh at 12% simple interest for 30 years = ₹4.6 lakh. At 12% compound interest for 30 years = ₹29.96 lakh. Compounding creates exponential, not linear, growth.
Q10. What is the difference between absolute return and CAGR?
Absolute return = (Final Value − Initial Value) / Initial Value × 100%. CAGR = [(Final Value/Initial Value)^(1/years) − 1] × 100%. An investment doubling in 10 years gives 100% absolute return but only 7.18% CAGR. Always use CAGR for comparing investments of different tenures.
Q11. How reliable are historical return assumptions for future projections?
Historical returns are the best guide available but are NOT guaranteed. Nifty 50 has delivered ~12% CAGR over 20-year periods historically, but individual years vary from -60% to +80%. Our calculators use your entered rate — use conservative assumptions (10-11% for equity, 6-7% for debt) for financial planning.
Q12. What are the key financial ratios I should know for investments?
P/E ratio (Price-to-Earnings): lower = cheaper stock. P/B ratio (Price-to-Book): <1 often undervalued. Expense ratio (for mutual funds): lower = more returns to you. FOIR (Fixed Obligation to Income Ratio): <40% = healthy EMI load. CIBIL score: >750 = best loan terms. Knowing these helps decode financial documents.
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Calculator Disclaimer
For Informational Purposes Only: The 100 Units Electricity Bill India — State-wise Cost FY 2025-26 provides estimates based on the inputs you enter and standard financial formulas. Results are indicative only and do not constitute financial advice.
Not a Guarantee: Actual returns, tax liability, or financial outcomes may differ due to market conditions, regulatory changes, or individual circumstances not captured in the calculator.
Professional Advice: For significant financial decisions, please consult a SEBI-registered Investment Advisor, Chartered Accountant, or certified financial planner.
Data Currency: All rates, slabs, and parameters are updated periodically. Verify current rates from official sources (RBI, SEBI, Income Tax Department, IRDAI) before making decisions.
Last Updated: 17 Jun 2026 | Data Source: RBI, SEBI, Income Tax Act 1961, IRDAI | Maintained by CalcWise.Finance