PV1 wrote:An ICE vehicle that gets 25 mpg burning gasoline uses 1,400 Wh per mile (35 kWh contained in one gallon of gasoline, traveling 25 miles on that gallon). Even at 50 mpg, an ICE still uses 700 Wh per mile.
An EV getting 100 MPGe uses 350 Wh per mile. In order to achieve the rated 62 miles in the i-MiEV, it achieves 136 MPGe, using 258 Wh per mile. Most of us easily exceed the 62 mile range estimate, so the i-MiEV in practice is even more efficient.
Even in the winter, using half of a charge to heat the vehicle, an EV uses 600 Wh per mile, still better than a 50 mpg ICE vehicle.
These figures are for onboard energy only, not including charging, BUT:
From the wall, I measure total energy consumed by the vehicle, including losses from charging, balancing, and even consumption from the EVSE itself. With these losses factored in, I still only use between 250 and 300 Wh per mile.
I generate my own solar energy, so the energy used by my i-MiEV only travels through 250 feet of wire as electricity. ZERO emissions generated from driving. Very minimal losses through transmission. This is something no ICE vehicle can claim.
alohart wrote:Kuuuurija, you're acting as if electricity generating facilities and transmission networks would not be necessary if EV's didn't exist. However, this infrastructure was already available prior to the first sale of a mass-produced EV. The additional electricity needed by EV's costs very little because of this. Studies have indicated that no additional generation or distribution capacity will be needed even when the number of EV's increases considerably.
This is totally different from the situation with the gasoline and diesel needed by ICE vehicles. Petroleum refineries would still exist to produce petrochemicals for use in plastics, etc., but far less petroleum would be needed, so the considerable ecological damage petroleum causes would be minimized. But the huge, expensive, polluting (many leaks) gasoline and diesel distribution system would not exist, so its costs need to be allocated to ICE vehicles. As a result, there's just no way that ICE vehicles can compete with BEV's in terms of overall efficiency.
You are absolutely correct. The University of Delaware (my alma mater) has built a working model using vehicle-to-grid technology (V2G) to connect 15 electric vehicles to the power grid and supply power back to the grid from the vehicles batteries during peak load. The majority of electric vehicle charging can be done during off-peak hours when the existing electrical grid has plenty of capacity and will not need to be upgraded.alohart wrote:Kuuuurija, you're acting as if electricity generating facilities and transmission networks would not be necessary if EV's didn't exist. However, this infrastructure was already available prior to the first sale of a mass-produced EV. The additional electricity needed by EV's costs very little because of this. Studies have indicated that no additional generation or distribution capacity will be needed even when the number of EV's increases considerably.
Power plants adjust their capacity downward for evening and nights when most businesses are not using the power they do during the day and when air conditioning loads are less and that's when most EV's are charging - Overnight. If we had 50 million EV's charging overnight, we wouldn't be overloading the existing grid . . . . we'd actually be doing the power plants a favor, as they operate most efficiently nearer their optimum capacity than they currently do at night scaled back to half throttleKuuuurija wrote:Do you understand, that power lines have its capacity and it must be much higher if many EV-s are charged? No additional generation or distribution capacity will be needed? Think again! EV is not a Perpetuum mobile!
Sorry, but that's not 'logic' at all. When you consume a gallon of gasoline, it's one less gallon left in the world - It's GONEThe same logic was if I say, that Gasoline stations are there even if I do not consume gasoline at all, so my consumption does not add any additional oil consumption.