Europe also is also short on qualified labour, so spending on training must also be ramped up, especially as the transition would likely boost growth for well over a decade, Lane told a conference.

"In terms of activity levels for the next decade or two, the green transition can be very significant engine of activity," Lane said. "So by and large, I think I will have a higher GDP forecast the more I'm confident that there will be a significant green transition."

(Reporting by Balazs Koranyi; Editing by Toby Chopra)