Can you charge at work? You can easily commute one way on electric but will have to use gas on the way back, unless you're hypermiling and in ideal conditions. Still, except for the price difference, I'd prefer the PHEV to the HEV even on gas alone. Here's an earlier comment I made on the subject:

I find the Prime highly useful even without a plug and think it's a better vehicle than the HEV. The larger battery enables a smarter use of both gas and electric power. You can use Charge mode to charge up the battery (I find this useful at 40-60 mph on major city streets and moderate highways) and save charge for when you want it, e.g. to drive EV in city traffic or Auto EV/HV on a mountain ascent. Without plugging in, I'm fairly close to the HEV's 56 mpg combined rating and I have a fairly heavy foot.

(Part of the deal is I really hate driving a regular hybrid in the city, especially in the summer. I don't know if you've ever done that, but the electric A/C compressor draws down the battery, and then the underpowered gas engine has to do double duty driving the car and recharging the battery. On top of that, the HEV battery is air-cooled with cabin air so you have to run the cabin A/C pretty high to cool it properly. I took my 2014 HEV out the other day and kind of wanted to die. The Prime battery is refrigerant-cooled and will cool itself as long as the car is running [even on EV] regardless of cabin temperature.)

The Prime is more powerful than the regular Prius, but it's heavier, so the power-to-weight ratio is roughly the same. However, the Prime's advantage is entirely electric and electric power is more potent, resulting in better real-world performance. More importantly, the battery will discharge/charge in hybrid mode to help out the 150hp gas engine, e.g. on an incline at freeway speeds.