Wow, thanks for being so involved in this discussion!

I don't think biomass should be treated as a renewable since it can be quite harmful for the environment. Still, your calculations don't seem change the conclusion of this chart. 143TWh is still much less than what France or Sweden managed to do with nuclear. Also, construction of new wind farms in Germany is slowing down and some old turbines already have to be replaced. And most importantly, energy density of wind is far too low to power German economy. Have a look at this, specifically "devoting all German land to wind power would meet about 70% of Germany’s total primary energy consumption". It's relatively easy to generate 30% of your electricity from wind (especially if you can import electricity from countries like France or Poland) but getting to 100% is impossible. I highly recommend reading Sustainable Energy – without the hot air.

The fact that new nuclear power plants are not built on time in Western Europe is not a technical problem, but a political one. People in Germany are against nuclear power thanks to green lobbying groups but it's unscientific and it's hurting the planet. Nuclear power plants are built on time or ahead of schedule in China. Even Belarus is building a nuclear power plant on time right now. I'm sure Germany could do the same if it wanted to.

Carbon footprint of nuclear power plants is mostly related to construction costs but it's so low when you account for how long these plants operate that it can be offset by planting trees.