Electric Vehicles have gained very considerable popularity in India due to the environment-friendly benefits and cost efficiency of these vehicles compared to conventional fuel-powered vehicles. However, consumers are often restrained due to the prevalent misconceptions pertaining to costs towards charging and infrastructure facilities. This article unmystifies the cost of charging an EV, lists out detailed information on how such costs are to be calculated, compared with petrol or diesel vehicles, and understanding different charging methods.
HOW TO CALCULATE EV CHARGING COSTS: THE BASICS
It’s essential to understand some key units and factors involved, to determine the cost of charging your EV:
- Battery Capacity: EV battery capacity is measured in kilowatt-hours (kWh) and usually ranges between 15 to 40 kWh. A higher battery capacity offers a longer driving range.
- Electricity Rate: The cost of electricity per unit (1 kWh) varies by location. For example, the average residential rate in Delhi is around Rs. 8/kWh, while public charging stations may charge Rs. 4/kWh.
Using these two variables, you can calculate the total charging cost. For instance, if you own a Tata Nexon EV with a 40.5 kWh battery, the charging cost at home in Delhi would be:
- Home Charging Cost: 40.5 kWh x Rs. 8/kWh = Rs. 324
- Public Charging Cost: 40.5 kWh x Rs. 4/kWh = Rs. 162
IS CHARGING AN EV CHEAPER THAN USING PETROL AND DIESEL?
Yes, EV charging is significantly cheaper than refueling a petrol or diesel vehicle. To understand this, let’s compare the Tata Nexon EV with its petrol and diesel variants:
- Tata Nexon EV (Long Range)
- Full charge cost: Rs. 324
- Range: 465 km
- Running cost: Rs. 0.69 per km
- Tata Nexon Petrol Manual
- Refueling cost: Rs. 4,180 (44-litre tank at Rs. 95/litre)
- Range: 767 km (17.44 km/l)
- Running cost: Rs. 5.4 per km
- Tata Nexon Diesel Manual
- Refueling cost: Rs. 3,872 (44-litre tank at Rs. 88/litre)
- Range: 1,022 km (23.23 km/l)
- Running cost: Rs. 3.79 per km
As shown, the Nexon EV’s per-kilometre cost is far lower than its petrol and diesel counterparts, leading to substantial savings over time.
HOME CHARGING COSTS FOR EVs
The total cost of home charging depends on several factors, such as the sanctioned load, electricity rate, and type of meter (residential or commercial). For example, in Delhi:
- Residential Charging Cost: Rs. 324 for a 40.5 kWh battery at Rs. 8/kWh
- Commercial Charging Cost: Rs. 162 at Rs. 4/kWh
Charging at home is convenient and eliminates the need to locate a public charging station. However, if you use a commercial meter, the cost may vary.
STANDARD CHARGING VS. FAST CHARGING
Understanding the difference between standard and fast charging can help you choose the best option for your EV:
- Standard Charging (AC): Typically done at home using a 120-volt or 240-volt outlet, standard charging uses alternating current (AC) that’s converted to direct current (DC) inside the EV. While this method is slower, it is ideal for regular overnight charging.
- Fast Charging (DC): Available at public charging stations, fast charging uses direct current (DC) and higher voltage (up to 480 volts), which significantly reduces charging time. Fast chargers usually charge up to 80% capacity to prevent battery degradation.
Recommendation: Use standard charging for daily needs and opt for fast charging during long road trips or in emergencies.
CONCLUSION
Calculating the cost of charging an electric vehicle is straightforward with the right information on battery capacity and electricity rates. EVs offer considerable savings compared to petrol and diesel vehicles, making them a cost-effective and sustainable choice. Whether you charge at home or at a public station, understanding the charging process can help you manage your expenses and optimize your EV’s performance.
With the increasing availability of charging infrastructure, making the switch to electric mobility is more viable than ever. Start your journey towards a greener future with an electric vehicle!
