Plans to build the biggest wind farm in Europe have been given the go-ahead by authorities in Scotland.
The 181 giant turbines on the Isle of Lewis will make green electricity, but not everyone agrees it'll be good for the environment.
The Royal Society for the Protection of Birds (RSPB) says the farm will threaten birds in the area.
But lots of people are in favour of the plan because they say wind energy is renewable, clean and cheap.
Others argue it will bring hundreds of new jobs to the area which will benefit people living there and provide up to 425,000 homes with power.
The RSPB has argued against the farm saying birds who get too close to the turbine's long blades could be injured or killed.
And some people against it say the 140m high turbines would be ugly to look at and noisy.
At the moment there are about 130 wind farms in the UK. Some of the biggest are in Llandinam in Powys, Barrow in Cumbria and Barr South in Ayshire.
It's a big decision to make so the farm still needs approval from top Scottish politicians.