It is the use of tides or wind to deliver our daily energy needs that form ‘Green Energy’. They are thought to be ‘Green’ due to the fact that they are easily restored and natural. Often by going back in time we see the value of wind power and windmills as modern energy sources. Regardless of this, we are mainly talking about using modern techniques to offer planet friendly and eco-efficient solutions.
The home can use a range of new ideas to help with energy usage including Solar Thermal and Solar Water Heating Collectors. Equally there is the basic electricity generated through roof-installed panels. Equally important is that of Biomass Energy which includes Stoves, Fuel, Pellets and Boilers burning Wood. Then we have the ancient energy of the Sun and the heat that come it – now often called Ground Source Heat Pumps. At the end there are two of the most mature forms of energy methods in the UK albeit renamed as Wind Turbines and Hydropower.
Looking at each area in turn we will consider some of the skills needed by those who want to train in this field. If you currently work in the areas of Electrical, Gas and Plumbing then this could be appealing to you. Certainly by getting information from many sources we can look at the career potential for Electricians, Gas and Plumbers. We’ve also provided links and adverts from several training providers, so book-mark this page (CTRL-D) and you can come back later to review other options.
Thermal Solar Energy Systems: This technology is based around two core types of knowledge to achieve the results known as Solar Energy. First, we have Solar Water Heating Collectors, which absorb energy from the Sun and transfer this into hot water. Whereas Solar Electrical panels or Photovoltaic heat collectors transfer solar radiation into electricity. Obviously situated away from blockages such as chimneys these Solar Panels basically need to be mounted on south facing roofs at an angle of 30 degrees from the horizontal.
Within Solar Energy overall, Solar Water Power is now commonly used in the UK. Solar Water heating systems can provide over 50 percent of a household’s hot water requirement during the year. The average cost of installing this type of equipment is expected to range from 500 to 1500 pounds for a DIY system, through to 2-5k for a professionally installed system.
Systems Utilising Biomass Energy: Although in the modern world this now includes ‘Energy Crops’ it also takes in suitable plant and animal substances. Due to its adaptability it can produce a range of energy forms from heat and electricity through to combinations of both. It is interesting to note that the UK has some of the largest quantities of Biomass material to generate electricity within Europe. One of the main factors of this style of energy is the result without the impact on C02. With each tree being planted as another is felled you can see how the C02 produced during heating is minimised and why the system is deemed sustainable.
A process titles Short Rotation Coppice (SRC) such as Willow and Poplar are used to meet the demands of such ‘Energy Crops’. Perennial grasses are also responsible for large quantities of dry matter. Of equal importance, although maybe less well known are Municipal and Agricultural Waste. Using normal agricultural activity, Agricultural waste is a natural by-product. Another biomass element is that called municipal waste and this comes from wood or food goods.
Systems Using Geo-Thermal Energy – This is primarily the heating of the Earth (mainly from the sun) and can be utilised in electricity and warm water production. Using the ground temperature of around 12 degrees in the UK we can both heat and cool buildings. Whilst these heat pumps require energy to operate their rate of return is excellent being four units kept for every one unit of energy used. The energy generated by a heat source pump can in fact be considered 100 percent renewable, if the power to operate the pump comes from solar electrical panels or a wind turbine.
Systems Based On Wind Energy: As an energy source wind energy has to be one of the oldest forms of energy creation in history. Whether to a home or local grid when the energy has been generated it must be delivered to appoint if usage and cannot be stored. The UK alone is considered one of the best sources of wind generation within Europe. For the fact remains that within the UK we have the ability to generate 10 percent of our requirement from Wind Production as opposed to the current value of 1 percent. Instead of producing electricity at a rate of 2-10p per kWh we could be generating at 2p per kWh. Because of this it is estimated that it takes between half a year to three quarters of a year to cover the costs.
Within the UK, Hydropower is an energy process that suits the energy generation model. The ability to utilise energy from moving water, much like wind power, has been going on for thousands of years. That said, this type of energy can generate around 2 percent of the total electrical demand for the UK.
A hydropower system transforms the kinetic energy of the moving water into another type of energy by means of a turbine. The important thing is that without relying on water storage the turbines can generate electricity. ‘Micro-Hydro’ utilises a chunk of the outdated sluices and dam systems that have been killed off by the large national distribution methods. Whilst considered a small form of electrical output this system has been thought to be able to give some 200mW of capacity to the UK. The capital cost of installing a micro-hydro system can run between 200 and 3000 pounds per kW of energy output.
The demand on ‘Green Energy’ continues to develop in light of the energy demands worldwide. That said the UK is well placed, especially in the domestic sector to take full advantage of the various items above.
With the bulk of development work in the domestic field both the Plumbers and Electricians are set to capitalise in this area. You can now get a range of grants to support the growth of renewable energy ideas within the European market. Equally important is the role of gaining qualifications to install items that we have talked about. By mixing green training with those of electrical or plumbing you could cover both angles.
Written by Scott Edwards. Check out Solar Training or Green Certification.