Wise moves on the part of the project proponent, had they presented their project with a 17 year construction and 11 billion euro budget it never would have been started.
Humans are optimistic. If we knew in the beginning how long something will actually take we never would start many things.
Construction started in 2005 and the plant was supposed to be online in 2010. Eleven years later it’s still not operational.
Original budget was 3 billion euros. Current estimate is over 11 billion.