Mathematicians needed! PiP Charge cost vs Gas

i figger around 25 cents. it is subject to your average charge mileage tho, some do better than others.

 

assume 50 MPG prius = $3.33 per gal gets you 50-miles
assume 3mi/kwhr EV = 16.67 kwhr assume 20 cents per kwhr = $3.33

Here's your equation: Elec Breakeven cost $/kwhr = $3.33x3/50 = Cost ($/gal) x EV (kwhr/mile)/Car MPG

Note that this is good after ICE warm-up period.

PS- Part of the reason I became more active on Prius Chat a few years ago was to learn how to do these calcs so I could figure out how many tons of coal were being used by EV's. So now nobody can fool me.

 

You don't need math.

Figures don't lie, but liars do figure.

You need to determine how effectively you can charge-off (pun almost unintended) your commutting miles or any other regularly driven miles if you're not a commuter.
Can you charge at work?
Can you charge at home?
Is there Public charging available?
How many miles do you drive per day? Per week?
How many of those miles are over a predictable route?
Do you get to use HOV lanes with a Pip and is this a factor for you?
What would you use for personal transportation if you didn't use a Pip?
Is mass transit available?
All of these are important, but in the end the Pip is either going to fit your needs at an acceptable cost or it's not, and if some of those needs are feelings such as fossil fuel dependency or carbon throughput?
You can't say it with math.
I always say that people buy things like the Pip either for very selfish or selfless reasons.
In the end? No. it's not the most financially prudent car that you can get, but it's better than a 73 GMC Suburban.
It's also not the "greenest" way to get from here to there by a long shot.
Bi-ped transportation or some forms of mass transit has it beat......or not.
Depends on how you bend the numbers and humans are a funny bunch when we're trying to justify our actions.

I commute 10 miles per day and I can charge on both ends (I asked my employer! Please do the same if you get a Pip!) but at present the Pip just doesn't work for me.
FWIW, I think that more people COULD be driving them than DO drive them, but that's their call.

Whether or not you adopt the Pip lifestyle?
That's YOUR call.

Good Luck!

 

Most people do WAY better than 3 miles/kWh. During the summer I can do over double that.

Coal usage really depends upon the state...and is becoming less and less by the day across the board.

 

YMMV...3 mi/kwhr should be about 100-110 MPGe considering charging losses.
I gave equation so you can use whatever your experience dictates.

PS- coal use was down in 2012 but is up a little in 2013 so far.

 

It cost me about $.70 to charge my PiP at a rate of $.21/kW. Unlike a lot of people here, I only get about 7-8 miles on EV mode. Without charging the battery, I get around 45mpg. Current gas price is $3.45/gal where I go.

To charge my PiP to go 45 miles on EV mode, it would cost me $3.94.

I'm not a lead foot driver, but I'm also not the slowest. After running two fill ups charging it every chance I get, my decision to charge it all the time has gone out the window. However, I will charge it every other week to maintain the battery and every chance I get to charge for free. Still, PiP is well worth the extra money for the green sticker!!!

 

You have to have a lead foot to get under 120 EV MPGe in the PiP.

 

...I agree my number are not PiP specific...120 MPGe is more like 3.6 mile/kwhr

 

But the title of the thread (and the subforum we are in) should dictate that we be talking about the PiP. That is what the OP's question was about.

 

If we use 3.6 mi/kwhr...BISCO wins it is $0.24 /kwhr for $3.33/gal

 

You can get 50 miles with 12 kWh (4 recharges).


Multiply your cost per kWh with 12.

 

...USB would you say that inlcudes charging loss?

 

Charging loss included. It has 2.7 kWh usable (23% to 85% of 4.4 kWh pack). With charging loss, it is about 3 kWh.

It could go up to 3.2 kWh if you drain the HV portion of the battery. This is the worst case senario EPA use in their calculation.

 

Everyone, make sure and include the losses for driving to the gas station.

Mike

 

I pay .176/kwh at home and 0/kwh at work and I usually hit the gas station about once a month. Does this work for me?

 

...my first PiP siting today in VA! someone with MD plates at our Walmart, fess up.

 

Next one you see is going to be yours. I see a 2014 with your name on it.

 

I did 8 EV-only trips each starting with 85% SOC and carefully recharging after the trip 80.9 miles for 18.98 kWh gives 4.26 miles/kWh. That would be 143 mpg-e without including the gas that the EPA uses in the calculation. If you include the gas per the EPA it calculates as 112 mpg-e. The trips ranged from 6 to 13 miles to/from a variety of locations.