I would also suggest you to look at mainly in demand branch.
The problem could be - you have had assigned historical production for base year 2010. Thus the output seems fine.
But in demand side, the actual demand could have been low, and thus in future years, the production would be as much as demand only.
To cross check the results, look at
Module Energy Balance result under
Transformation. If the case is as i have mentioned, there would be surplus energy in production side in 2010. But in other hand, if it's not the case, there could be imports to meet the same demand in later years, it will be also visible in this results.