Wirtschaftswoche cites EU Energy Commissioner Oettinger with an anti-solar talking point I never heard before:
If solar deployment in Germany proceeds with the same speed as in the last years, we will miss out on improved technology that may be developed later (my translation from German).
I am not sure if I can support this position unconditionally.
For one, it obviously means that there never is a right time for deploying. There might always be some technological advance later.
Next, global warming is kind of urgent as a problem. We need to deploy, deploy, deploy, and then deploy some more whatever is available right now. Waiting for new technology makes the problem worse, since early action on decarbonising is worth much more than later action.
And, while it is true that there will be better technology in 2015, people will be free to deploy that as well. There are still enough empty roofs left.
Anyway, the most important improvement in technology is that of getting prices down. And for that to happen, stopping deployment would be very bad news.
Therefore, I fail to see how this is a convincing argument against solar energy. And I am not sure why the EU Commissioner for Energy should be advocating against deployment of solar energy in the first place.