Electric Vehicles have shifted from a niche choice to India's fastest-growing vehicle segment. With petrol crossing ₹100/litre in most states, the promise of drastically lower running costs is the #1 reason buyers are switching. But how much does it actually cost to charge an EV at home vs a public station?
In this guide we break it all down — battery capacities, state tariff rates, public charger pricing, and a full fuel-cost showdown.
The Charging Cost Formula
Simple Formula
Cost = Battery Capacity (kWh) × Electricity Rate (₹/unit)
Add ~10% for charging losses (heat from charger conversion). Example: A Nexon EV with a 40.5 kWh battery at ₹7/unit costs roughly ₹315 per full charge at home.
1. Home Charging Costs
Home charging is the cheapest option. Most EVs include a 3.3 kW or 7.2 kW AC charger. You're billed at your state's domestic residential tariff. Average rate across India: ₹6–₹8 per unit. Some states like Maharashtra and UP offer discounted EV-specific tariffs for night charging (₹5.50–₹6.50/unit).
| Vehicle | Full Charge Cost | Per Km |
|---|---|---|
Ola S1 Pro 2-Wheeler | ₹31 | ₹0.23 |
TVS iQube 2-Wheeler | ₹23 | ₹0.23 |
Tata Tiago EV 4-Wheeler | ₹147 | ₹0.92 |
Tata Nexon EV LR 4-Wheeler | ₹315 | ₹1.05 |
BYD Atto 3 4-Wheeler | ₹469 | ₹1.12 |
*Home charging rate assumed at ₹7.00/unit. Actual rates vary by state and consumption slab.
2. Public Charging Station Costs
Public charging (Tata Power EZ Charge, Statiq, Zeon, Jio-bp) uses commercial-grade fast DC chargers. Operators pay commercial power tariffs and add their margin — resulting in rates of ₹15 to ₹25/unit + 18% GST.
AC Slow Charger (3.3–7.2 kW)
₹8–₹15
per unit · 4–8 hours for full charge
DC Fast Charger (25–150 kW)
₹18–₹25
per unit · 30–60 min for 80% charge
💡 Pro Tip
Reserve DC fast charging for highway trips only. Daily home charging at ₹7/unit vs public DC at ₹20/unit saves you nearly 65% and also preserves your battery's long-term health.
3. EV vs Petrol vs Diesel: Monthly Cost Showdown
For a mid-size SUV driven 1,000 km/month:
Petrol SUV
Baseline₹8,333
per month · ₹8.33/km
12 km/l · Rate: ₹100/l
Diesel SUV
28% cheaper₹6,000
per month · ₹6.00/km
15 km/l · Rate: ₹90/l
EV (Home)
87% cheaper₹1,050
per month · ₹1.05/km
300 km/charge · Rate: ₹7/unit
EV (Public DC)
64% cheaper₹3,000
per month · ₹3.00/km
300 km/charge · Rate: ₹20/unit
🏆 Bottom Line
Switching from petrol to an EV charged at home saves you ~₹7,283 every month — that's over ₹87,000 per year in your pocket.
4. Tips to Minimize EV Charging Costs
Charge during night-time slabs
Many states offer off-peak ToD discounts between 10 PM–6 AM. Setting a charger timer can reduce your unit cost by up to 20%.
Install rooftop solar
A 3–5 kW solar system lets you charge your EV using 100% free solar electricity, bringing your per-km cost close to ₹0.
Use EV aggregator apps
Apps like Pulse Energy and ChargeFinder compare rates across charging networks, helping you find the cheapest station on your route.
Avoid frequent DC fast charging
DC fast charging costs 3× more than home charging and degrades battery health over time. Use it only for highway emergencies.
🔌 Free Tool
Calculate Your EV Charging Cost
Enter your state, EV battery size, daily km driven, and electricity tariff to get a precise monthly running cost estimate — and compare it against petrol instantly.
Open EV Charging Calculator