Andy Adams asked:


In these days of increased energy costs whether it’s Gas, Oil or Petrol many governments around the world are looking for an alternative that is both cost-effective and kind to our environment.  The green issue seems to be the latest concern of the government in the UK and with oil prices skyrocketing they are keen to levy their dependence on these fuels.

Alternative energy sources have already been introduced sporadically in the UK with wind turbines being placed in windy areas of the country such as just outside Barnsley in South Yorkshire.  The idea has caught on with many wind farms being situated all over the country, much to the ramblers and country folk’s disapproval.

One new proposal involves yet another alternative energy source derived from nature, tidal power.  In January of this year the Welsh Assembly and UK Government launched a study into whether using the Severn estuary to capture href=”http://www.moneysupermarket.com/utilities/cheaper-gas-electricity.aspx”>electricity through tidal power was possible.  After all the River Severn has the second largest tidal range in the world.

There are two different methods being tested for feasibility, being Tidal streams and Tidal ranges.  Tidal streams generate electricity by having large free standing turbines turned by the force of the water, this works in a similar fashion to wind turbines and is considered to have a lower environmental impact.

Environmental impact is a big concern for the initiative as the area is a vital feeding ground for many wading birds and any major installations would disrupt the local wildlife.

The other tidal method, ranges involves a large chain of devices which take advantage of the large difference between low and high tide, and stores water to be released when the tide is low passing it through a turbine which generates the energy that will be used to create href=”http://www.moneysupermarket.com/utilities/cheaper-gas-electricity.aspx”>electricity.  Engineers believe this to be the best method for the Severn estuary but it is much more invasive to local wildlife.

Whilst it is admirable that we are looking to renewable energy and natural means of getting href=”http://www.moneysupermarket.com/utilities/cheaper-gas-electricity.aspx”>electricity it is important that we consider all the implications such as wildlife when we start putting up wind farms and water turbines.



Paine