Is the ICE kicking on in EV mode?

The 0.2 barrels for electric thing is confusing. The same result is shown for the LEAF and I-MiEV.

I assume it means that if you drove all-electric then the national average electricity fuel mix would include 0.2 barrels of petroleum-derived energy. Most areas use little or no petroleum for electricity production but Hawaii does and some areas like New York apparently use it in "peaker" plants during higher power demand periods.

 

Really, I've not seen a credible wells-to-wheels for the Prius PHV, where was it published?


But your wells-to-wheels is misguided. Many PHEV uses are trying hard to avoid any use of energy for wells and paying for renewable energy for charging. Average grid does not matter me (or many). What is the efficiency of driving on wind power? Solar Power?

 

Really? So Torque app shows 100% when Volt's battery is full and 0% when depleted?

 

Here is one from US Department of Energy.

EPA's Beyond Tailpipe Emission calculator also include the upstream emission so we can use it as WTW comparison. The regular 50 MPG Prius is already lower than the Volt national average so Prius PHV will just be have lower WTW carbon footprint. We'll have to wait until they add Prius PHV in there.