Using the power of the wind to produce electricity is easier
than you think, and what's more it is free.
Small wind turbines:
Small wind turbines are ideal for small households, small communities
and businesses to provide on-site electricity generation. First
of all you will need to ascertain whether your particular site
is windy enough, you can do this by visiting the UK
Wind Speed Database website
, this will approximately give
you the average wind speed in your area. You must of course
take into account any local topography and any nearby obstructions
such as buildings, trees and nearby hillsides. If your average
wind speed is of 4-5 meters per second then you have a site
which is worth while installing a wind turbine. It is also possible
to purchase a small wind speed calculating instrument at sailing
chandlers or specialist shops such as The
this will help you initially to work out if
your site is worth pursuing with a wind turbine.
Choosing the right size turbine:
The average house uses about 4,700 kilowatt hours (kwh) of electricity
annually. This will of course vary from house to house but you
will be the best judge of that. Rooftop mounted generators are
mounted on either the side or on top of the house/building,
vibration can be a problem so care that the vibrations are not
transmitted through joining walls etc.
There are a number of small wind generators available at sailing
chandlers that are perfectly capable of keeping a 12/24 volt
leisure battery topped up.
National Grid connection is possible and the contribution you
make can be eligible for the Renewables Obligation Certificates
(ROCs) under the Renewables Obligation. When you connect to
the grid it has to be approved by your local electricity distribution
utility. The company will require the connection to be of satisfactory
What happens when the weather
is not windy:
In most systems you have a mix of wind generation and solar
panels so when one element of your system is only producing
low or no power the other will be taking it's place. This is
typical in off grid systems where partial usage of renewable
energy powers part of your energy usage. For systems that are
on grid then the mains power is present for the non productive
periods and automatically kicks in.
|Small wind generators
|Medium wind generators
|Large wind generators
*Plus installation costs which vary from region to region.
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