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Menu options
In the menu are a number of options to help determine the kWh/100km and other conversions
in case they are of interest. I've watched quite a few YouTube videos and find electricity
usage quote in kWh/100, Wh/km, mi/kWh, Wh/mile so if you find these values in videos you can
easily convert to kWh/100km. There's also a kWh/100km to mi/kWh in case you wish to convert
kWh/100km to the commonly used British value of mi/kWh.
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kWh/100km - Enter distance and kWh to get kWh/100km
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Wh/km to kWh/100 - Enter Wh/km to get kWh/100km. Wh/km is used by Tesla.
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mi/kWh - Enter distance in miles and kWh to get kWh/100km.
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mi/kWh->kWh/100 - Convert from mi/kWh to kWh/100km.
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Wh/mi to kWh/100 - Convert from Wh/mi to kWh/100km. Wh/mile is used by Tesla.
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kWh/100->mi/kWh - Convert kWh/100km to mi/kWh, a common UK measurement.
Articles
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Energy consumption of full electric vehicles in Wh/km. view
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Victoria reducing solar feed-in tariff from 4.9c/kWh to 3.3c/kWh. view
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EV charger locations site: Plugshare
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Tesla charger locations: Tesla
Overview:
The Electric Vehicle Cost Calculator enables you to quickly determine the cost of electricity for a trip. Because we don't pay for the electricity
at the time of a trip, we often don't realise the cost of electricity for a trip. By making the cost of electricity apparent you
can often save money by making better decisions on whether to use a car, to use public transport, to put off the trip until
later, to combine trips, or even to pay a little extra locally, because if you add the cost of electricity, you will often find a cheaper item which is further
away actually costs more.
Instructions:
Car Description: The car description is optional and does not affect the calculation. The description
field is provided so I can provide a default value and description for cars as I blog about the fuel efficiency of
different cars. This will enable others with the same type of car to quicky use the default values for their own
car.
Distance: Enter the trip distance. A quick way to determine an estimate of the distance is to use Google maps
and enter the start and end location of the trip. Google maps will return the distance for the trip. If you regularly
drive the same trip, then use the trip meter on your car to record the distance.
Electricity Price: Enter the current electricity price. The price of electricity varies considerably based on your provider
or if you use a third party charging station. I've used the figure of $0.3715 as it's the current standard rate I
pay for elecgtricity as at 13 Feb 2024.
Charging efficiency: One factor with EVs often not mention is the charging efficiency. Power is lost
in the charging process. From what I've read the charging efficiency can range around 75% to 93%, so we need to factor
this energy loss into the cost. Home chargng appears to be less efficient than commercial super chargers. I'd suggest
using an efficiency figure of 80% for home charging and 90% for commercial charging. The best way to calculate
efficiency is to work out home many kWh hours you car has been topped up with and divide this by how many kWh the
charger has delivered.
kWh per 100km: A common figure used to measure energy consumption for cars is the number of kWh per 100km.
Electric cars tend to be very good on reporting statistics. Some EVs will report kWh/100km but if yours doesn't,
then you should be able to use one of the conversion options in the menus to help. You can also manually record
the kilometres travelled and the energy used for multiple recharges to calculate the kWh/100km figure.
Tips:
A good way to store your own electricity cost and kWh per 100km as default settings, is to do a calculation with a distance of zero.
The URL in the address bar contains your settings. Now bookmark the page or add the bookmark to your mobile home screen.
Your defaults settings are now saved with the bookmark.
Electric cars in one aspect suprisingly are not like internal combustion engine (ICE) cars when it comes to efficiency.
With an ICE car for country driving, you would typically get about 50% more distance compared to city driving.
Electric cars use more energy in stop-start congested driving and above a certain speed, uses more energy the faster you
drive. The sweet spot for electric cars I believe is somewhere between 20-40km/h. You may wish to work out your
kWh/100km for city driving and country driving separately and that will enable you to estimate your long distance
higher speed driving better.
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