⚡ 400 Units Electricity Bill in India
State-wise monthly cost comparison · FY 2025-26 · All major DISCOMs
₹777
Cheapest (Tamil Nadu)
₹2,103
Avg (7 states)
₹2,905
Priciest (Karnataka)
📊 400 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 | ₹1,624 | Full rates → |
| Maharashtra | MSEDCL | ₹2,468 | Full rates → |
| Karnataka priciest | BESCOM | ₹2,905 | Full rates → |
| Tamil Nadu cheapest | TANGEDCO | ₹777 | Full rates → |
| Uttar Pradesh | PVVNL/DVVNL | ₹2,634 | Full rates → |
| Gujarat | DGVCL/MGVCL | ₹1,494 | Full rates → |
| Rajasthan | JDVVNL/AVVNL | ₹2,817 | Full rates → |
🧮 Calculate Your Bill
Full Calculator — all states, appliance-wise, solar ROI →🏠 Who Uses 400 Units per Month?
Typical household: 1.5-ton AC 4–5 hr/day, full appliance suite. 2–3BHK in hot climate state.
💡 Tips to Reduce a 400-Unit Monthly Bill
- →Set AC to 24°C minimum — every degree below 24°C adds 6% to cooling cost.
- →Service your AC annually — dirty coils reduce efficiency by 20–30%.
- →Use curtains/blinds on west-facing windows — reduces cooling load by 15%.
- →Consider a solar rooftop system — at 300–400 units/month, payback is 4–5 years in India.
❓ FAQ — 400 Units Electricity Bill India
How much is the electricity bill for 400 units per month in India?
The bill for 400 units varies by state. Tamil Nadu: ₹777, Gujarat: ₹1,494, Maharashtra: ₹2,468, Delhi: ₹1,624, UP: ₹2,634, Karnataka: ₹2,905, Rajasthan: ₹2,817. National average across major states: approximately ₹2,103/month including fixed charges.
Which state has the cheapest electricity at 400 units?
Tamil Nadu (TANGEDCO) has the cheapest electricity at 400 units — ₹777/month. Gujarat is the second cheapest at ₹1,494/month. These states benefit from government subsidies and relatively lower state electricity taxes.
Which state has the most expensive electricity at 400 units?
Karnataka has the highest bill at 400 units — ₹2,905/month. High electricity rates in Karnataka reflect higher cross-subsidies, distribution infrastructure costs, or higher state VAT on power.
How do I reduce my 400 units/month electricity consumption?
Set AC to 24°C minimum — every degree below 24°C adds 6% to cooling cost. Service your AC annually — dirty coils reduce efficiency by 20–30%. At your consumption level, the biggest gains come from: AC efficiency and solar rooftop if applicable.
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 400 units/month consumers, the fixed charge is 79 on average across states.
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