General considerations for solar power installations

There is a significant amount of difference between designing a grip direct system which does not require batteries, and a stand-alone photovoltaic system. The major difference lies in the fact that a stand-alone system must meet the total energy requirements and needs throughout the year, in contrast to meeting the annual energy demand of a home. It is essential that the photovoltaic system keeps its battery bank charged at all times, and if this is not possible, then a generator must be included in the system to act as a backup source of energy.

The main component of any conventional or modern solar power system is photovoltaic cells or panels. These PV or photovoltaic panels are specialized devices that have the capacity to receive and absorb rays from the sun, and then convert this light and heat energy into electricity. The electricity thus produced can be consumed for household purposes. In order to generate and produce the optimal amount of electricity with the help of these PV panels, their installation and location must be such that the greatest amount of sunlight must reach them for throughout the day. In the northern regions, the ideal location for the installation of photovoltaic panels is a roof which faces the south. Some of the most important factors which must be taken into consideration include the following:

Roof orientation, tilt and condition

For the ideal performance of the photovoltaic cell, some of the most critical factors which are required include about 100 square feet of a space that faces the southern direction and is does not get obscured by any shade. This is the requirement of each kilowatt of power that will be produced. If you are using thin film panels, then you require space which is about 175 square feet. The installation of the panels in the southeast or southwest directs will alter the functionality and optimal power production capacity of the photovoltaic cells, which is why positioning and location are critical to achieve maximum output.

Condition of your roof:

Another important factor is the overall condition of the root. Do make sure that you roof is capable of withstanding the weight of the photovoltaic system prior to the installation. The system weighs about three to five pounds per square foot. Thus it is important to ensure that the material of the roofing is long lasting and durable.

Potential Shading

Try to avoid areas that have too much shade from trees, vents buildings, cables, chimneys, and other sources. Also keep in mind that the shade areas on your roof can change and vary from season to season. A professional installer can correctly estimate the approximate shading that your system may receive.

Ground mounted or pole mounted systems:

If your roof receives too much shade, your best option is to mount the panels on the ground or poles. This is especially good for homes that have large back yards.