The sun provides an abundant, renewable and efficient source of energy. The amount of solar energy intercepted by the Earth every minute is greater than the amount of energy the world uses in fossil fuels each year. There are two types of “solar panels,” electrical and thermal. The electrical type is generally referred to as a “photovoltaic module” or a “solar module.” It is a solid state device or an assembly of solid state devices and produces electricity only. These devices are usually seen as long flat panels mounted on rooftops perpendicular to the arc of the sun. The electricity created is either used immediately or stored in batteries. The thermal type of panel generally consists of water piping, glass and insulation and is generally much larger in size (often 4′ x 10′) and is used to heat water for the home.

Using solar power to generate electricity has both advantages and disadvantages. Although costly to implement solar facilities can operate with little maintenance or intervention after initial setup. Solar energy although costly on the mainland is relatively economically competitive in area where grid connection of fuel transport is difficult, this includes remote islands. Finally, once the initial capital cost of building a solar power installation has been spent, operating costs are low compared to other existing technologies. One of the main disadvantages of solar power next to cost is that it is the most efficient in areas that receive a great deal of sunlight, primarily the tropics. Therefore, these systems may not be as practical in northern regions

Image courtesy of Backwoods Solar

Filed under: Powering Your Island, Solar Power