The popular Rutland range of small wind turbines are built by Marlec, a well-established British company that have been developing renewable energy products since the 1970s.
The Rutland 504 is their smallest wind turbine. Sturdy, compact, safe and efficient, it is the most popular choice for trickle-charging battery banks on yachts - although it is equally at home on narrowboats, or set up next to a touring caravan or motorhome.
The Rutland 913 is a medium-sized wind turbine, again aimed primarily at marine applications. In windy coastal locations it should allow you to run most of your lighting and navigation equipment from clean, free, renewable energy.
The new Rutland 914i has a similar compact size, but produces 30% more power than the popular 913 model, by using maximum power point tracking technology to perfectly match the generator operation to the turbine speed.
Rutland turbines are a popular sight in marinas - many thousands are in use worldwide - boat owners like the clean, aerodynamic lines and the quiet operation. As with any wind turbine, output does depend very heavily on wind speed - these aren't suitable for use in sheltered urban areas.