[Octane99]

This is a simple estimate of running cost of Top 4 EVs currently on sale in India

Disclaimer

1) This is just an estimate of running cost based upon power consumed on charging the EV.
2) A comprehensive running cost will be somewhat more than what is estimated here in this thread as it will include Cost of home charger installation, Home electricity Load Extension, Parking space modification, Insurance, Service & Maintenance, Toll taxes, Parking, etc.


Points to keep in mind

1) The cost of electricity considered in this thread is a moderate Rs 10 for 1 kWH. (Few power corporation provide cheaper electricity, say Rs. 4.5, so just substitute Rs. 10 with your electricity tariff).
2) Not considering any alternative source of Electricity (like a Solar panel, Wind mill, Plutonium rock ,etc) as 95% of India homes runs on electricity provided by a power corporation.
3) You'll have to get your Electricity load extended as cars like Hyundai Kona & MG ZS EV comes with a massive 7kW home charger unit.
(If you have 2 Air conditioner in your house and a Home Charger box for Hyundai Kona, the recommended household load capacity is 12kW).
4) Higher Load capacity results in Higher electricity tariffs.
5) 15A portable Chargers are usually slow and may cause a downtime of up-to 11 - 19 hours in few cars.
6) Best way to charge your EV will always be a Charging Station, cheaper and fast.
7) High Wattage Home Charger are mostly sold separately.
8) You'll notice that the energy consumed while charging is more than battery capacity. (12% - 36% loss usually occur during transfer of energy from Charger to Battery)

Hyundai Kona

Range - 452 km
Total Electric energy consumed to get fully charged - 44.35 kWh
Cost of full charge (Rs 10 for 1 kWh) - Rs. 440.35
Real world range - (80% of ARAI Certified Range) - 361 km
Estimated Running Cost - Rs. 1.21 per Km

Some facts about Hyundai Kona -
Highest estimated Range - 452 km
0-100 in 9.7s
8 years / 1,60,000 km battery warranty
Vehicle charging support in Delhi, Mumbai, Bangalore and Chennai.
DC Fast charging - 57 min (0-80%)
Hot & Cold ventilated front seats.

TATA Nexon EV

Range - 312 km
Total Electric energy consumed to get fully charged - 28.05 kWh
Cost of full charge (Rs 10 for 1 kWh) - Rs. 280
Real world range - (80% of ARAI Certified Range) - 250 km
Estimated Running Cost - Rs. 1.12 per Km

Some facts about TATA Nexon EV -
0-100 in 9.9s
8 years / 1,60,000 km battery warranty
DC Fast charging - 1 hour (0-80%)
Free home charging installation.
Built on 5 star G-NCAP Platform.
Cheapest running cost of the 4.

MG ZS EV

Range - 340 km
Total Electric energy consumed to get fully charged - 60 kWh (avg)
Cost of full charge (Rs 10 for 1 kWh) - Rs. 600
Real world range - (80% of ARAI Certified Range) - 272 km
Estimated Running Cost - Rs. 2.20 per Km

Some facts about MG ZS EV -
0-100 in 8.5s (fastest of the 4)
5 years warranty
DC Fast charging - 50 mins (0-80%)
Free home charging installation.
5 star Euro-NCAP.
Least energy efficient of the 4.

TATA Tigor EV

Range - 213 km
Total Electric energy consumed to get fully charged - 36.8 kWh (avg)
Cost of full charge (Rs 10 for 1 kWh) - Rs.368
Real world range - (80% of ARAI Certified Range) - 170.5 km
Estimated Running Cost - Rs. 2.15 per Km

Some facts about Tata Tigor EV -
Smallest Battery and Range
Top Speed limited to 80km/h
DC Fast Charging - 2 hours
Longest home charging time.
Cheapest of the 4.
3 years / 1,25,000 km warranty.


Again I'll say that a comprehensive running cost will be somewhat more than what is estimated here in this thread as it will include Cost of home charger installation, Home electricity Load Extension, Parking space modification, Insurance, Service & Maintenance, Toll taxes, Parking, etc.

This is just a simple and quick reference thread, there are tons of factors to be addressed before we can estimate an accurate running cost.

Thanks.

[Sanjeev911]

Good reference. It is surprising to see that the cars that are more affordable up-front cost more to cover the same mileage! And we do not consider the battery charge holding capacities in our hot and humid weather conditions. End of the day, the price per km would end up around ₹3-5 per km.

[Octane99]

Originally Posted by Sanjeev911

End of the say, the price per km would end up around ₹3-5 per km.

True that. The Cost of home charger, home charger installation, Home electricity Load Extension, Parking space modification, will add around Rs. 80k - 100k in the overall on road price.

Will be visiting a Tata showroom soon to get the estimated cost of all this as well.

[sunilch]

I think we should consider a lower real world range for the cars in consideration. Primarily because we need to account for traffic, leaking (battery loosing power when the car is not in use which is 80-90% of the time in a day)), driving style and weather conditions (use of AC during day).

May be a 60% range of the stated ARAI range would be a better figure. So with that in question the figures stand out as follows:

Kona
60% of ARAI Range: 271.2Kms
Cost per Km: 1.62

Nexon EV
60% of ARAI Range: 187.2
Cost per Km: 1.5

MG ZS
60% of ARAI Range: 204Kms
Cost per Km: 2.94

Tigor EV
60% of ARAI Range: 127.8Kms
Cost per Km: 2.88

[SKC-auto]

Just curious to know how come a 20kwh something battery Tigor take 36.8kwh to charge. After all the inefficiencies, can that not be charged with 25kwh of energy?

Charge to 100% should not be calculated by peak power * charge time, the charge power decreases with the battery reaching higher charge.

[Octane99]

Originally Posted by sunilch

I think we should consider a lower real world range for the cars in consideration. Primarily because we need to account for traffic, leaking (battery loosing power when the car is not in use which is 80-90% of the time in a day)), driving style and weather conditions (use of AC during day).

That is definitely a valid point.
Thanks for doing the calculations based on 60% ARAI range.

Originally Posted by SKC-auto

Just curious to know how come a 20kwh something battery Tigor take 36.8kwh to charge. If after all the inefficiencies can that not be charged with 25kwh of energy

1) TigorEV doesn't offer efficient home wall box charger, like in Nexon.
2) NexonEV takes just 28.05 kWh for 80% which is kinda way efficient.

Originally Posted by SKC-auto

Charge to 100% should not be calculated by peak power * charge time, the charge power decreases with the battery reaching higher charge.

You are kind of right.
As per my knowledge, charging current do decreases with the battery reaching higher charge but that's the Ah (Ampere hours) which decreases. The current sent to battery keep depreciating with higher charge percentage but the working wattage of the charger unit remains the same. As W= (VxV)/R, The Resistance of Charger unit & Potential remains the same, hence the Wattage.

But I'll agree that it won't be always using the peak wattage as the charger unit will take some shut downs while charging, it wont work continuously for 11 or 19 hours.

Thanks for making the thread more useful

[GTO]

Some relevant points from our Hyundai Kona review . Do also keep in mind that if you buy an EV today, it won't necessarily be to "save money" because of their higher initial cost, limited use cases (e.g. long-distance touring capability) & suspect long-term reliability (what we are currently seeing are the 1st-gen EVs for most brands, so you are their beta tester).

Originally Posted by ChiragM

• Based on current electricity rates, the running cost of the Kona works out to a paltry 0.8 - 1.1 Rupees / km. GTO did Mumbai – Pawna – Mumbai in just 220 bucks. The cost is so insignificant that it'll be a rounding off error for most households. In fact, he paid more in tolls than he did for the electric charge.

• Warranty coverage for the battery is 8 years / 1,60,000 km. The main concern with older EVs was that the battery would have to be replaced within a few years, increasing the ownership cost significantly. An 8-year warranty will bring peace of mind to the owners.

• When setting up your charging station at home, do also account for the additional cost of wiring required from the meter box to your parking spot. BHPian sheldon.dz says that he paid Rs. 28,000 for the wiring that was installed by his building maintenance team.

[zhopudey]

Is the cost for charging point at home to be borne by the customers?

[ADI7YAK]

Originally Posted by zhopudey

Is the cost for charging point at home to be borne by the customers?

Nope. Charger box is included in the car price for most of the common brands in EV market right now (Tata,MG,Hyundai) not sure about others though. One will have to pay for the wiring though.

[sgmuser]

Great thread to start with! Factoring in the cost of the vehicle is as well important. One can see from the reviews, Nexon is a capable car even when it is compared with Kona, which costs almost 11 lakhs more. Can Kona justify that difference? Personally, I do not think so. Both are 5 seaters with decent ride quality, fit and finish. So, it is critical to consider the entry cost of EV as well. With EV, it is all going to be more about 'range' and less of 'which brand', in my opinion. In 6 to 8 years of time, we will start to see the importance of brand value in car diminishes and other factors like range etc. gains importance.

[pogo0120]

Originally Posted by Octane99

1) TigorEV doesn't offer efficient home wall box charger, like in Nexon.

You are kind of right.
As per my knowledge, charging current do decreases with the battery reaching higher charge but that's the Ah (Ampere hours) which decreases. The current sent to battery keep depreciating with higher charge percentage but the working wattage of the charger unit remains the same. As W= (VxV)/R, The Resistance of Charger unit & Potential remains the same, hence the Wattage.

Is the number you are quoting for Tigor EV accurate?
If the Tigor EV is CE/UL certified, I would expect atleast 80% or more efficiency in charging, in which case your number is off the mark.
All are SMPS based chargers and must be efficient.

Regarding charging current change, I do have experience working with Lithium Ion, NiMh batteries. Charging current is reduced upon change in raise of temperature of the battery. For some chemistry like Lithium Polymer, not Lithium Iron Phosphate (where voltage raises upon fully charging), a gas gauge continuously monitors the amount of charge filled but the charge cut off is based on raise in temperature(delta T) vs time.

Still I donot get 50% charge efficiency of Tigor EV charger.

38 Units used to pump in 20 Units of battery energy. Remaining 18 Units is lost as heat. If charging duration is 18 hours, that means the amount of heat generated is 1 unit per hour and is more like 1Kwatt electric stove turned on. Its still lot of heat.

[123.rishabh]

Does anyone have an idea of the battery cost of these vehicles, because after sometime it will definitely need replacement.

[Octane99]

Originally Posted by sgmuser

Can Kona justify that difference? Personally, I do not think so. Both are 5 seaters with decent ride quality, fit and finish. So, it is critical to consider the entry cost of EV as well. With EV, it is all going to be more about 'range' and less of 'which brand', in my opinion. In 6 to 8 years of time, we will start to see the importance of brand value in car diminishes and other factors like range etc. gains importance.

Nexon EV is more of an entry level EV, where as Kona is projected as a SUV by Hyundai.
The major difference between the two is -
Higher Range in Kona Electric.
Paddle Shifts.
Hot & Cold ventillated front seats.
Electrically Powered adjustable driver seat.
Sunroof.
On boasd TPMS, etc.
Brand value, trust and reliabilty are the walls which can't be breached easily.

Originally Posted by GTO

Do also keep in mind that if you buy an EV today, it won't necessarily be to "save money" because of their higher initial cost, limited use cases (e.g. long-distance touring capability) & suspect long-term reliability (what we are currently seeing are the 1st-gen EVs for most brands, so you are their beta tester).

Its for investing in a cleaner & greener future.
It scares me to the core when I see school kids wearing pollution masks, stuck in traffic for an hour or two.
Even if we have to pay a little bit more today, we should try to be the crop of beta tester so that we have more efficient, reliable and fun to drive cars in future as well as healthier generations.

Originally Posted by zhopudey

Is the cost for charging point at home to be borne by the customers?

As of now all 3, Tata, MG & Hyundai are including a Home Box Chagring unit with your EV.

Originally Posted by pogo0120

Regarding charging current change, I do have experience working with Lithium Ion, NiMh batteries. Charging current is reduced upon change in raise of temperature of the battery. For some chemistry like Lithium Polymer, not Lithium Iron Phosphate (where voltage raises upon fully charging), a gas gauge continuously monitors the amount of charge filled but the charge cut off is based on raise in temperature(delta T) vs time.

Yeah, true that.
There will be some charger cut off/shut down durations.

Originally Posted by pogo0120

Still I donot get 50% charge efficiency of Tigor EV charger.

38 Units used to pump in 20 Units of battery energy. Remaining 18 Units is lost as heat. If charging duration is 18 hours, that means the amount of heat generated is 1 unit per hour and is more like 1Kwatt electric stove turned on. Its still lot of heat.

Got in contact with a dealer in South Delhi today, and yes I'm a bit off mark.
According to a dealer :
Battery capacity is 21.5 kWh
Unit used for charging is in between 32 kWh - 35 kWh (as per few owners of Tigor EV)
Only a 15A portable chager is the way to charge your car at home. (Efficeint AC Wall Box, like the one in Nexon EV is in works).
I guess the portable charger is inefficient, resulting in higher downtime and high electricity consumption.
I'll try to get more clarity on this ASAP.

Originally Posted by 123.rishabh

Does anyone have an idea of the battery cost of these vehicles, because after sometime it will definitely need replacement.

Well when I visited the Hyundai Showroom in December, the sales executives were not having any clue about that. All they said that till 8 years/ 1,60,000 km its all covered by Hyundai. (Note there will be some depriciation in the range and battery capacity over the course of 8 years, so after 3 years, you can't just get your battery replaced under warranty saying that it is now returning a peak range of 350km than the 400km range I used to get. Depreciation will be applicable)

Not sure about Hyundai, but Nissan Leaf's battery replacement cost is somewhat near $5500 in US, with that said I'll assume that it'll be around 4-5 lakhs (I'm just guessing).

Thanks

[highlander]

Can someone add the corresponding details for all variants of E20 (E20/E20 plus/Reva).
Since the market is flooded with used E20 and the price of replacement battery is known in today's price; folks can make complete calculation before taking plunge.

[Octane99]

Originally Posted by highlander

Can someone add the corresponding details for all variants of E20 (E20/E20 plus/Reva).

Mahindra e2o Plus

Range - 110 km
Total Electric energy consumed to get fully charged - 18 kW
Cost of full charge (Rs 10 for 1 kWh) - Rs. 180
Real world range - (80% of ARAI Certified Range) - 88 km
Estimated Running Cost - Rs. 2.04 per Km

Some facts about Mahindra e2o Plus -
0-60 in 14.1s
3 years / 60,000 km battery & Car warranty
10kW AC fast charging only available in P2 commercial fleet vehicle.
Top speed - 80 km/h

Originally Posted by highlander

Since the market is flooded with used E20 and the price of replacement battery is known in today's price; folks can make complete calculation before taking plunge.

Used e2o selling price - 3-4 lakhs
Battery replacement - 3 lakhs (approx)
There is no point of buying a used Mahindra e2o if its battery has to be replaced (or needs replacement in 1-2 years) because a new e2o will cost around 7.3 lakhs in New Delhi.