Article on Bloomberg says China will be increasing solar plants at 89.5% a year through 2015 in order to combat rising emissions. That can't be bad. Also, even at that point, solar would represent a small part of of the energy supply pie, so there would presumably be plenty of room to run.
what the Chinese is doing is to build large solar farms next to conventional plants, they adjust the conventional output to compensate the solar variation, this can be implemented at large scale and greatly improve the tolerance level of the existing grid, making so called "garbage energy" useful. this combines with the incentives will rocket the implementation. We have seen what happens when the Chinese government decided to do something, also, Yingli will be the last man standing in the coming solar consolidation