Make it affordable for people to have solar on their house as opposed to making it more expensive than ever to make a piece of toast. Sort out the whole net metering issue once and for all nationally so the entire market will be dealing with the same business conditions. Instead of dealing with the biggest technological issue with solar--the grid tethering--the governments seem to be largely ignoring it. If you are grid tied then you lose power when the power goes out. Of you are off grid, you keep power when power goes out, but you cannot put your excess production onto the grid or draw from the grid when your solar goes down. Conceptually, it seems like something could be worked out to resolve this, but it is quite difficult technologically and there doesn't seem to be any incentive for the private market to find a solution. Beyond that there are lots of other things that could be done--require alternative energy on public housing/section 8 units; transition to more environmentally friendly cooling systems (Air conditioning, fridges/freezers are far worse for the environment than your car, plus there are split heat/AC units that particularly would be beneficial if that whole tethering issue could be sorted); make solar assist mandatory on residential hot water systems when feasible; create zoning exemptions for comprehensive sustainable planning, including food production, habitat preservation, etc. --(people fail to appreciate exactly how damaging zoning laws can be to reasonable sustainable living practices in many places)--and reduce hard surface requirements on commercial construction (i.e. get rid of big ass mall-sized parking lots).
