Solar Photovoltaic (PV) Systems

Domestic solar photovoltaic (PV) cells are becoming more and more popular as a means of producing free energy, and with these systems, the initial investment quickly pays off by providing the homeowner with free and green energy. Solar PV systems function by using photovoltaic cells which convert solar light into electricity. It is important to have Solar PV systems placed strategically to maximize sun-visibility throughout the day. In this way the panels can maximize their energy production potential. In the United States, photovoltaic systems work best when placed on the south side of buildings.

Inevitably, these solar systems can reduce or eliminate your electricity bills and give you independence from high or rising electricity prices. The payoff period for PV systems is typically around 10-15 years, depending on the energy output and usage of the household. Photovoltaic systems do not harm the environment, and like other solar products, solar photovoltaic systems are environmentally-friendly, work quietly and produce no gas or other pollutants.



Types of photovoltaic systems

Photovoltaic systems are divided into different categories, depending on the way each system works.
Independent systems: In these systems PV Solar may be the only source of electricity. If powerful enough, this system can provide enough energy for the household.
Hybrid Systems: Hybrid PV Systems use photovoltaic cells as a major generator of electricity, but also have an additional source of energy such as a diesel or a gas generator, which provide electricity in cases of very low sun radiation. There are hybrid systems that can combine only renewable sources of energy such as sunlight and wind; however, systems with fuel generators are more reliable.
Hybrid systems may also be connected to the local power company network. This is common for homes “in the grid” as most of these systems don’t have a spare internal power source. In case of excess energy production, the system will send the excess electricity to the local electric company for use by other home owners and often be credited or paid for the excess energy produced.
In case of insufficient sunlight, the building will receive additional energy from the local power company. These systems require coordination with the electric company to ensure safe performance and integration; however, they are recognised as the most effective systems for generating solar energy.

The parts of PV system consist of several solar panels, an inverter, a holding system and connecting cables. The inverter is in fact an AC/DC power converter. A single solar cell produces little energy, so several cells are put together in a protective enclosure making up the solar panel. In addition, special tracking systems can be added in order to increase the effectiveness of the solar photovoltaic systems. These systems are very useful for places with lower levels of sun radiation, and can often increase the efficiency by more than 25 percent. The lifespan of the systems vary according to their type and maintenance. It is generally considered that the lifespan of these systems is around 25 years or more.
Before installation, it is also important to ensure that the roof can bear the burden of the system. If the roof is not strong enough, it may be reinforced or the system may need to be placed near the building. Furthermore, the construction should not be too close to any trees or other buildings that can cast a shadow over the panels as that would reduce their energy output.

Installing a photovoltaic solar system is a smart move all around; it will gradually pay itself off and then afterward it will give you the chance to enjoy absolutely free energy. Moreover, once installed, your home will immediately stop contributing a significant amount of environmental pollution, and you should deserve to feel great about it too.