Plan? Absolutely! Our electric bills are crazy (pool plus tropical fish tank).
The trick for me is waiting for >20% efficiency panels that are aesthetically pleasing (our roof is a 12-pitch (!) with lots of strange segments - diagonal panels will be a must) that don't cost the same as the car.
Interesting enough, working for one of the greenest companies in the valley, I'll be able to charge up at work for at least a while, which is nice, but I do want to end up powering it from a solar system.