Obama’s proposed power plant rules fall slightly short of environmentalists’ hopes

[Benton D Struckcheon]

2. It's already down slightly more than 10% from the 2007 peak.

Data can be found here, in Table 12.1: http://www.eia.gov/totalenergy/data/monthly/#environment

That being the case, a 30% reduction by 2030 from 2005 is a pretty easy target. Just continuing on the current course of increasing the share of renewables in electric generation, combined with stricter MPG targets on cars or conversion of cars to electric simultaneously with converting electric to renewable generation should do it.
Will do it, actually. At this stage it would take an actual turn back from where we are now to stop the momentum already built up in renewable tech, and that is just not going to happen. Science-backed innovation is going to continue regardless. The incentive to break through in the next area needed, battery storage, is immense, given the demand for longer life and faster recharging in everything, from cell phones to cars. With that kind of incentive, it's just a matter of time before we see big improvements there, and once that's done, solar + storage is going to take off. People will do it as a matter of common sense, because in the event of a storm knocking out your power, if you have a fully-charged battery that can keep you going, reduced certainly, but still keep your fridge (and for some people, sump pump) if nothing else going, for a few days until the power comes back on, AND you can recharge it with solar panels on your roof, that's a big convenience in such a situation.