As the titel says, the wind turbine is a nice source of power early in the game, as they can be used where-ever and without the need for fules, which can be tedious in the early game if you are running full bob/angels/momo-science(with bob's-extended).
I suggest at minimum doubling (3x preferably) the power output of the wind turbine. Currently, the cost is by no means worth the power output.