wind turbine

Not in connection with caravanning etc - but shied away from them on boats because of the noise / vibration and limited output but they might have improved since then. There is also a potential issue with where they are mounted because of the danger of being hit by the blades (but on a roof should be OK).

They are also quite pricey compared with solar and output is probably more variable than the steadier winds available on a mooring. Can't see them as an option myself unless you had a semi-permanent installation on a pole on a beachside seasonal.

If  somebody  is  willing  to  fund  a  Trial  we  could  always  ask Malcolm .. .. .. .. .. .. .. ..

The faster you drive the quicker the blades turn. Free lecky.

With  direct  drive  to  the  water  pump  it  could  do  away  with  fan  belts  then  !