The total energy required for that location is just short of 60,000.
So you definitely have your numbers in title and text wrong.
There are 15,000 energy tiles from time to time in the game. I know it for China and maybe they started to be there in late Scandinavia.
It‘s not like you would have to clear hundreds of them at a time. But if you don’t like them, please don’t region up, because it only gets worse.
Of course nobody likes them. But some hard tiles are part of the game. You have to prepare your camp and your style of playing accordingly.
I leave hard tiles for first thing in the morning.