Tata Nexon EV Home Charging Cost: Monthly Electricity Bill Math
The Tata Nexon EV is India's best-selling electric car. The primary reason people buy it is the massive savings on running costs compared to petrol or diesel. But how much does it actually cost to charge at home?
Unlike petrol pumps where you see the rupees ticking up instantly, an EV subtly increases your monthly home electricity bill. Let's break down the exact mathematics of charging a Tata Nexon EV so you know exactly what to expect.
The Quick Answer
It takes 30 Units (kWh) of electricity to fully charge the Tata Nexon EV Medium Range (0% to 100%). If your state charges ₹8 per unit, a full charge costs you exactly ₹240 at home, giving you a running cost of roughly ₹1.10 per kilometer.
The charger adds units to your existing home bill
A car is very different from an electric scooter. If you drive daily, the Nexon EV can add 120-200 units a month to your home meter. Those units may be billed at the top slab, especially in states with steep residential tariffs.
For a fair running-cost calculation, use your marginal home tariff or dedicated EV tariff if you have a separate EV meter.
How Many Units to Charge a Nexon EV?
In the world of electricity, 1 Unit is equal to 1 kWh (Kilowatt-hour). EV batteries are measured in kWh. Therefore, the battery capacity directly tells you how many units it takes to fill it from zero.
The Tata Nexon EV comes in two main variants:
- Medium Range (MR): 30 kWh Battery = 30 Units to full charge
- Long Range (LR): 40.5 kWh Battery = 40.5 Units to full charge
Calculating the Monthly Charging Cost
To calculate your monthly electricity bill increase, you need to estimate your daily driving distance.
Let's assume you own the Medium Range (30 kWh) Nexon EV, and you drive 40 km per day for office commutes.
- Monthly Distance: 40 km × 30 days = 1,200 km per month.
- Real-world Range: The 30 kWh battery gives roughly 220 km of real-world driving per full charge.
- Charge Cycles Needed: 1,200 km ÷ 220 km = ~5.5 full charges per month.
- Total Units Consumed: 5.5 charges × 30 Units = 165 Units per month.
| Driving Distance | Petrol Cost (₹100/L at 15kmpl) | EV Cost (₹8/Unit) | Monthly Savings |
|---|---|---|---|
| 1,000 km / month | ₹ 6,666 | ₹ 1,090 | ₹ 5,576 Saved! |
| 1,500 km / month | ₹ 10,000 | ₹ 1,635 | ₹ 8,365 Saved! |
| 2,000 km / month | ₹ 13,333 | ₹ 2,180 | ₹ 11,153 Saved! |
Beware the Tariff Slab Jump!
If charging your EV adds 165 units to your monthly bill, it might push your total household consumption into a higher, more expensive tariff slab (e.g., from the ₹6 slab to the ₹12 slab). Check out our guide on EV Tariff Slabs to see how to avoid this.
Commercial vs Home Charging
Charging your Nexon EV at home is significantly cheaper than using public fast chargers. Public DC Fast Chargers (like Tata Power EZ Charge or Zeon) charge a premium for speed and convenience, usually costing between ₹18 to ₹24 per unit. This effectively doubles or triples your running cost to around ₹2.50 - ₹3.00 per km—which is still cheaper than petrol, but nowhere near as cheap as home charging.
Frequently Asked Questions
How many units of electricity does it take to fully charge a Tata Nexon EV?
The Tata Nexon EV comes in two battery sizes. The Medium Range (30 kWh) takes exactly 30 units of electricity to charge from 0% to 100%. The Long Range (40.5 kWh) takes roughly 40.5 units.
What is the cost of charging Nexon EV at home?
If your home electricity rate is ₹8 per unit, charging the 30 kWh battery fully will cost ₹240 (30 units × ₹8).
What is the per km running cost of Nexon EV?
With a full charge costing ₹240 and delivering a real-world range of about 220 km, the running cost is approximately ₹1.09 per km. This is significantly cheaper than petrol cars which cost around ₹6 to ₹8 per km.
