Pros
If you are working in a technical domain you can learn a lot. And probably your position is quite secure since there are not many good engineers in this business, especially engineering domain. It seems the green energy and especially wind energy market will grow. So, probably there will be career prospects for the next 20-30 years. Compensations and benefits are not terrible for such a company. There is a chance to work with quite diverse and global teams. Mostly there is good work-life balance.
Cons
There are not many good career opportunities. Middle management is really bad. They hold their positions for so long mostly without any success. This can be seen when they think they are showing off by saying how long they are in this company without stating any specific success. Middle and senior management is in an echo chamber, they evaluate their own work by themselves. They are always successful. And they fire low-level workers if a thing doesn't go well.