“On a roof” may not matter much if neighboring houses are as high as yours. You want to be higher than anything close by. If you’re going to use a longer pole,

“On a roof” may not matter much if neighboring houses are as high as yours. You want to be higher than anything close by. If you’re going to use a longer pole, portability goes out of the window, as the pole will have to be stronger, too. Then, you might as well get an even stronger longer pole and increase the turbine diameter. Micro wind turbines rarely make sense.