Waiting in Flensburg

I have been waiting to cross the Danish border for several days now, staying with a group of energy and environment students who are planning to sail to the COP in Copenhagen - sadly, they won't be leaving in time to get me there by 8th December so I can do my presentation at the alternative Klimaforum09.
Instead, I am going to join up with Kim Nguyen, who has cycled all the way from Australia. He will arrive here at the end of November, and will reach Copenhagen on 6th December .
But I haven't been wasting my time here. I've been to an anti-nuclear, anti-'clean' coal demo, and attended a talk by Ingrid Nestle, newly elected MP for the Greens, and their speaker on energy economics. We discuss energy scenarios afterwards. She agrees that a zero carbon world is certainly possible, though we disagree on how soon; she thinks it can't be until around 2040, I think it could be much sooner, if only we had the political will.
I've also visited Energie aus Wind und Sonne . They are one of the biggest suppliers of renewable energy in northern Germany, and have a large warehouse full of solar panels, for which they are acting as wholesalers, as well as being involved in wind,solar thermal and wood-pellet-fueled central heating systems. They can source the wood from factory waste, using only 10% of it, to provide heat for 100,000 homes. There is clearly room for a lot of expansion, but a simple calculation shows that this can only be part of the solution (100% would be only one million homes), and we need to look for other forms of heat/insulation.
Last night I attended presentations by some of the students on the energy and environment course at the University of Flensburg. They were very interesting, covering means of liberalising energy markets and increasing the proportions of renewables, and the potential of wind and solar technologies. They were also in English, very useful for someone who hasn't studied German for over 40 years!
It seems that there is enough technical potential for wind power to supply seven times Germany's energy supply, and 18 times Europe's, but other factors, such as opposition from NIMBYs, and cost, cut this down.
I went to a talk by Prof Dr Olav Hohmeyer, from the University of Flensburg, and former chair of the IPCC Working group III (adaptation) last night. He said the way forward is to use renewables and energy efficiency, not nuclear power, because of the dangers of accidents and nuclear proliferation, and not carbon capture and sequestration because the available storage for CO2 will be needed later this century for storing CO2 captured from biomass burning, which will be necessary to reduce the amount of CO2 in the atmosphere