As an Electric Car, Chevy Volt need an electric power consumption. This car needs to recharge after we use the battery for a journey. Off course we should calculate how much does it cost to charge a Chevy Volt? or we can change the question to how much does it cost to fully charge back up from a daily journey?
To answer this question, we should know first is the chevy volt use an electric power rather than gasoline. So, the unit to represent this electric power is not a Gallon of Gas but we use kilowatt hours (kWh) to calculate the energy used. This parameter is base on the using of electricity power (in watt) in one hour.
The next step is we must separate the calculation into the two calculations. First, we should know how many electricity we used to charge a Chevy Volt. And the second we must know how much it costs for a unit of electricity. For a common electric car, I have written the electric car charging stations cost in the past, how it can make a help to understand the basic parameter to use in the electric car charging.
Calculate How Many Electricity We Used To Charge A Chevy Volt From 0 to Full
For example, we used a 2017 Chevy Volt as a subject to calculate. We know that 2017 Chevy Volt uses lithium battery with a capacity of 18.4 kWh. So, in an empty condition, we need at least 18.4 kWh to fully recharge the battery. Then we must calculate the charging efficiency to make it more accurate.
We know that we have different charging efficiency in a different type of charger. In 120V charger, the charging efficiency is 75% and in the 240V charger, the charging efficiency is 0.85%. base on this value we can get the real power consumption for 120V and 240V charger.
Here is the calculation:
- Use 120V charger, 18,4 kWh x (100/75) = 24,5 kwh
- And if use 240V charger, 18,4 kWh x (100/85) = 21.6 kwh
Calculate How Many Electricity We Used To Charge Back Up A Chevy Volt From Daily Journey
The above calculation is the extreme condition to charge the Chevy Volt battery from empty to fully recharge. But, this calculation may be different if we use different calculation method. The method I mean is we don’t assume if the battery is empty every day. We assume if there is still remain the power in the battery when we do the recharge. So the battery isn’t really empty.
In this condition, we better use the second method as I mean in the first paragraph, how much does it cost to fully charge back up from a daily journey? We know that fully charge battery Chevy Volt ( at 18.4kwh) can drive a 53 miles journey. So we can say that Chevy Volt uses 2.88 miles per kWh or we need 0.347 kWh per mile.
The we just need to calculate the distance we traveled in one day. After that, we calculate the electricity again base on charging efficiency above, 75% for 120V charger and 85% for 240 charger.
Here is the example calculation for 20 miles journey:
- Use 120V charger, 20 miles x 0,347 kWh x (100/75) = 9,25 kWh.
- And if use 240V charger, 20 miles x 0,347 kWh x (100/85) = 8,16 kWh.
Then, to make your own calculation, just replace the number “20” with your journey to get your own power usage in kWh. Next, we calculate the costs/money for a unit of electricity.
Calculate How Much It Costs For A Unit Of Electricity
It is pretty simple to calculate the cost for a unit of electricity that we use to recharge the Chevy Volt battery. All we do is just multiply the electricity cost for 1 kWh and the electricity used in kilowatt hour (kWh). The cost we must pay depends on the rate should we pay for electricity. We assume that the national range is about 10 to 20 cents per kWh, so we make a 20 cents here for example.
Here is the calculation for charging Chevy Volt from 0 to full:
- In the 120V charger, 24,5 kwh x 20 cents = $ 4,9
- And in the 240V charger, 21,6 kwh x 20 cents = $ 4,32
And here is the calculation base on above example for 20 miles daily journey:
- In the 120V charger, 9,25 kWh x 20 cents = $ 1,85
- And in the 240V charger, 8,16 kWh x 20 cents = $ 1,63
As a result, that is all of the calculation to answer the question of how much does it cost to charge a Chevy Volt. As a say in the past article about electric car charging station cost, The electric car charging costs (especially Chevy Volt here) is cheaper than the cost of refueling of gasoline. And even if one day the government increase the electricity price two fold, the cost to charge a Chevy Volt is still cheaper than the cost of refueling of gasoline.
Photo Credit: Plugincars.com