dtbaker61
Well-Known Member
- First Name
- Dan
- Joined
- May 11, 2020
- Threads
- 104
- Messages
- 3,974
- Reaction score
- 3,646
- Location
- santa fe,nm
- Website
- www.envirokarma.org
- Vehicles
- MME (delivered 2/26/21), DIY eMiata BEV
- Occupation
- Solar Sales/install
there are significant losses between charge energy pulled from the outlet, and miles you get on the road.Also I'm a bit confused by the EPA's kWh/100 miles. If I calculate based on a 88kWh battery and 305 mile range, that works out to be 28.8 kWh/100 miles. But the EPA says 33kWh/100 miles. So if the EPA's 33 is right, then my mpge figures should go up by around 15%.
- charger inversion loss between plug and HV battery,
- internal loss in HV charge/discharge from internal resistance
- inversion loss between HV battery and AC motors,
- variable loss for heating/cooling/lights
The EPA number trying to capture average actual miles taking into account ALL losses under 'average use' and some mix of stop/go and highway miles.
.... 'your milage may vary' is perfectly reasonable.
The cost of energy per kWhr at the plug is fixed though.... charge stations are typically 2x-3x more expensive per kWhr than what you pay at home, particularly if you live in an area with 'off-peak' rates and you can time your charging to happen off-peak.
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