No sooner had we decided to preach a lesson to the industry about the need to build its financial muscle than news flooded in to demonstrate that it was doing just that. Siemens' purchase of Bonus is the clearest example yet. The entry of Siemens promises to secure Bonus a seat at the table right alongside GE Energy and Vestas. The financial world has woken up to wind because the sector got big enough to be interesting. But continued growth is not a foregone conclusion. It is highly dependent on energy market politics -- and on the development of a modernised and fully integrated transmission and grid infrastructure.