Passive solar energy is the term used to describe a method of building design which considers the sun’s position in relation to the building to maximize solar heating sources. Without installing any technological devices specific to collecting solar energy, such as solar panels, utility costs can be dramatically affected by simply designing and constructing buildings to utilize the south facing walls for solar heat absorption and cooperatively designing the ventilation system of the building to direct the heat throughout the rest of the structure. By conscious placement of the structure there is a dramatic effect on energy consumption required to maintain the temperature within the building. Obviously, during the hot summer months, steps must be considered to shade the south facing walls from the sun’s impact, or the cost for cooling the building will overshadow the cost savings advantages exhibited during the winter months.
While the obvious benefits of passive solar power as a means of heating buildings includes that solar power is an unending energy source and no chemical reaction is required to convert the sun’s heat, therefore releasing no chemical bi-products or environmental pollutant emmisions, there are negatives to the use of passive solar energy which must be considered. For example, productive use of passive solar energy is dependant on the amount of consistent sunlight which can be expected for a geographical location. Even in areas of continual sunny weather, the heat transferred by the south facing walls in a passive solar application must be retained throughout the night time hours after sunset.
A compromising alternative to a spotty passive solar application may be to take advantage of the newest technology in solar grid films. While traditional collection grids designed for harnessing solar energy were previously constructed in large panel form which were typically attached to the roofs of buildings, new technology is emerging which has reduced the solar collection cells into a thin film which may be positioned flush with existing roof systems for unobtrusive installation. These films are much less costly than their predecessors in that less raw material is required for construction and are now also being seamlessly integrated with different types of roofing systems for virtually undetectable installations. Use of this type of solar energy system will allow your dwelling to remain on the electric utility company’s energy grid, but permit you to use the energy exclusively from your solar energy collector when available, at no cost. In this way, your home is hybridized to use passive solar energy to reduce overall fuel consumption, collected solar energy at no cost, and supplement your energy shortages with the utility company’s provided electricity.
