Solar Photovoltaic Stand Alone System

Being solely relying on its own solar modules, as the name suggests, the system does not generate its power from other sources such as wind or diesel generators. In addition, it does not connect to any electricity grid. This gives the system the advantage of being located in remote areas where electricity are deem impossible to supply due to many factors.

The system has three main components and a sub component, which gives the system advantages to the maximum. First are of course the solar modules or panels, then the battery and inverter. The solar modules generates electricity in the form of direct current (DC) which is then stored in the battery. When power is needed in the household or building, DC from the battery is converted into alternate current (AC) by the inverter before being put to use.

Next, we have the sub component of the system. The charge controller is connected to the battery in a way which supports it, given the circumstances of a prolonged period of overcast or when high power loads are needed at a certain time. Furthermore, they safeguard the battery, increasing its operational life. All these in turn contribute to its advantages, which involves availability of electricity even during nighttime and in case of dark weather.

However, because of the requirement for a sizeable battery capacity and solar generation capacity, the cost of the system increases.  Plus, the solar modules need to be positioned so that it is pointed directly towards the sun to generate more power.

Finally, we come to the part where the system specifications have to be determined. There are a few things to look at when attempting to set up a Solar Stand Alone system or any renewable energy systems.

Firstly, we need to analyze the load on appliances in the building. Determine the peak demands so the voltage system selection can be matched to the system. Next, determine the configuration and quantity of solar modules which will be used. It usually depends on the location, either on the rooftop or a specially built protrusion to place the solar modules.

Third is the selection of an appropriate inverter and battery to support the power output and surge of electricity in the system, followed by the necessity of a charge controller.  Finally, make final calculations to acquire the agreed load to see if the production output matches the budget.

Solar modules mounted on roof	Batteries, charge controller and inverter in secured cabinets