Solar systems convert sunlight directly into electricity. A solar system enables to generate some or all of their daily electrical energy demand, exchanging daytime excess power for future energy needs (i.e. nighttime usage). The house remains connected to the electric utility at all times, so any power needed above what the solar system can produce is simply drawn from the utility. Solar systems can also include battery backup or uninterruptible power supply (UPS) capability to operate selected circuits in the residence for hours or days during a utility outage. There are two general types of electrical designs for solar systems for homes; systems that interact with the utility power grid and have no battery backup capability; and systems that interact and include battery backup as well.
Grid-Interactive Only (No Battery Backup): This type of solar system only operates when the utility is available. Since utility outages are rare, this system will normally provide the greatest amount of bill savings to the customer per dollar of investment. However, in the event of an outage, the system is designed to shut down until utility power is restored.
Grid-Interactive With Battery Backup: This type of solar system incorporates energy storage in the form of a battery to keep “critical load” circuits in the house operating during a utility outage. When an outage occurs the unit disconnects from the utility and powers specific circuits in the home. These critical load circuits are wired from a subpanel that is separate from the rest of the electrical circuits. If the outage occurs during daylight hours, the PV array is able to assist the battery in supplying the house loads. If the outage occurs at night, the battery supplies the load. The amount of time critical loads can operate depends on the amount of power they consume and the energy stored in the battery system.
Solar systems produce power in proportion to the intensity of sunlight striking the solar array surface. The intensity of light on a surface varies throughout a day, as well as day to day, so the actual output of a solar system can vary substantial. There are other factors that affect the output of a solar power system like temperature, dirt &dust, mismatch and wire losses. These factors need to be understood so that the customer has realistic expectations of overall system output and economic benefits under variable weather conditions over time.
Solar systems are experts who install all types of solar system. Solar installers provides assistance in design of “Gird-Tie” and “Off-Grid” PV solar system projects, engineering solutions, registration processes as well as installation and connection of the solar system projects. Solar installers are trained and experienced in all types of racking systems and more than 20 different makes and models of solar systems. Solar installers are ready to provide you with the best and most professional experience by installing your solar systems. Solar installers have experience in connecting and constructing solar system projects of any size and layouts, with minimum losses from the solar generating stations.