just drive by most windmills randomly in your travels, most wouldnt be
moving or turning slowly.

The large wind farm turbines are designed to turn slowly--28.5 rpm is a
common design speed.

most dont turn at all inb winds under 10 MPH,

sync troubles with lines, wear and little power,

OP might do better if he owns enough land with mineral rights to get a
oil well with gas drilled on his property.

owners usually get free natural gas plus 11.5 percent of
sales.........

a casual friend had a oil well drilled on his property and gets free
natural gas heating.