There are lots of residential rate plans in Michigan, but with distribution fees and off-peak it seems to be around $0.15/KW-H. On peak looks to be in the mid/upper 20's My cost for Diesel is in between mid-grade and premium gasoline prices.
An interesting point is the 546 mile range afforded by the generator is roughly 20 MPG and what I assume the Hurricane will achieve, so the $0.27 (below) is probably a reasonable estimate for series hybrid operation or a standard Hurricane power vehicle in your area. If the Hurricane gets better mileage, then the cost analysis gets worse for the Ramcharger. If the Battery only operation does not achieve close to 144 miles on a charge then again, the cost analysis gets worse for the Ramcharger.
The way I figure it, the high cost of electric in your area almost makes this a break-even for the two operating modes but electric still seems to win. Don't try to justify this based upon payback unless you expect gas costs to increase much more rapidly than electric.
$0.33 | per KW-H | * | 92 | KW | / | 90% | chg eff | = | $33.73 | Charged | / | 144 | mi | = | $0.23 | per mi |
$5.40 | per ga | * | 27 | ga | | | | = | $145.80 | Fueled | / | 546 | mi | = | $0.27 | per mi |
At $0.15 per KWH and $3.75/ga for fuel (roughly my situation), assuming the vehicle costs an extra $10K and ignoring cost of capital, I'd be at over 125K miles to break even. Considering I live in Michigan with cold winters, I probably won't be getting 144 miles per charge.
$0.15 | per KW-H | * | 92 | KW | / | 90% | chg eff | = | $15.33 | Charged | / | 144 | mi | = | $0.11 | per mi |
$3.75 | per ga | | | | | | | | | | | 20 | MPG | = | $0.19 | per mi |
This vehicle won't save me any money in the long run and unless battery replacement prices come down, it will be more expensive than a pure gas truck. But, I still want an EV that can tow, that would be cool.
All that said, I've been told I can't evaluate the costs this way... Maybe I have to add in maintenance fees for the 3.6L? The 90% charge efficiency (not all power goes into the battery) is just a guestimate. Will a Hurricane be unable to achieve 20MPG? But until someone points out a major error in my assumptions, this is what I believe.