Solar Power

Solar energy is considered a source of energy that offers benefits on the cost and climate. For most parts of the world, sunlight is in abundance. Together with the technology for harvesting electric power from the sun, adopting home solar system is tenable. Solar power panels are utilized to absorb and convert sunlight into electric power using photovoltaic (PV). By looking around, it is easy to realize that most homes now have roofs and or a backyard that can accommodate solar panels so as to produce electricity.

Features of a home solar system

It is the wish of many people that a solar system provides enough electric energy so that it is able to power appliances within a home. That is exactly what solar does. In addition, the home solar system should be capable of providing AC power which is akin to the traditional system and that most electric equipment are designed to take AC power source. AC power operates lights, gadgets, computers, mixers, fans, air conditioners, TVs and music systems.

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Essential elements of a home solar system

When considering a home solar power plant, it should comprise of

  1. The number of solar panels ought to be adequate enough to absorb much of the solar energy. Taking ideal assessment of sunlight in a home, solar panels on a rooftop can produce about 300 watts in an hour of exposure to the sun.  For a typical day of 10 hours that amounts to 3000 watts by day. It is vital to note that the amount produce is dependent on the number of hours the sun shines on the panels.
  2. The home solar system does require a battery that can be charged by the electric energy generated by the solar panels when illuminated. The battery allows for storage of power which will be used at night when there is no light. The battery technology has been improving to cater to increased capacity, longer lasting and cheap to acquire.
  3. An inverter is a key requirement for a home solar system. It functions to convert the generated DC power to AC power for use in powering home appliances. The inverters are also rated depending on the amount of DC to be converted to AC and the size of home equipment that draws power from the solar system. To design a home system you might need an expert advice. Also consider the questions
  4. Home system solar panels are usually installed on the roof tops or in the backyard and will require cabling to make power available within the home traditional wiring system. The interconnection should be adequately throughout to ensure the right cabling and sizing is achieved.  
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The working of a home solar system

Ones installed, the solar system will power most of the equipment at home. When the sun shines on the solar panels, the inherent energy is absorbed by the PV cells made from silicon semiconductors within the cells. The semiconductors thus convert the solar energy to electric energy through the PV effect. This is scientific. No magic. The converted energy is in the form of DC power similar to battery power. It can thus be used to charge a battery directly. Ones the battery is charged to a level enough for conversion to AC, an inverter then converts the DC power to an AC power component. The mains of a home are then supplied by the AC power from the inverter. From the sockets, all appliances within the home can be powered. For the latest batteries and prices

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Factors to consider

When setting up a home solar system, a homeowner should make this consideration

  1. AC power demand for the home is determined. One of the best methods for ascertaining this is to make use of the home monthly electric bill. Consider especially the highest bill in a month ever. Bills are a record of the electricity consumed by the equipment connected to the power source. From the monthly bill, a daily bill can be obtained by diving the monthly bill be the number of days in that month. Considering that a typical solar might generate up to 3 kWh a day, the daily bill can inform the number of panels and battery storage capacity required.
  2. The number of solar panels that will be required in the generation of the AC power required is another key concern. The number of panels is essentially the building block of the amount of energy your home solar system can be rated at. Consider a home that requires 30 units a day or 30 kWh. For a panel that produces 3kWh a day, 10 such panels will be required to power the home.
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  • Having determined the AC power required and then the number of panels that supply the power demand, it not all complete. A home owner should then consider, the available space for connecting the solar panels. This includes considering a space that is devoid of obstruction and clear space for the sun to shine on the panels.

Cost of home solar system

The amount of cash to spend on a solar system is dependent on the size and the type of solar system. The solar system to be installed can be an off-grid or a grid-connected solar system the off-grid solar system is usually a stand-alone system and is not connected to the traditional main grid. The system has solar panels and a connection to the battery and then to the inverter which supplies the home. The batteries here are the deep cycle type of batteries. They store DC power which is then converted to AC power by the inverter.

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The grid connected solar system does not have batteries. The panels are connected to the inverter directly. The countries that have this type of connection have a governing statutory for net metering. The connection performs meter charge balancing for energy supplied to the grid versus the energy drawn from the grid. The homeowner earn a revenue when they supply the excess power to the grid. For the year 2019, homeowners are paying up $2.8/w. while in 2008, the cost was at $8/w for a system rated as 6 kW.

An off-grid home solar system is an excellent cost-saving feature when planned properly and is capable of paying back the initial investment within the first 5 years of operation through savings in electricity bill. A grid-connected home solar system is both a cost-saving feature as well as a revenue earning system when planned with revenue earning as an objective. However, while off-grid home solar power plants are independent of the main grid, on-grid systems are subject to the regulations of the grid power supply provider. Thus, home users can choose an appropriate system depending on the circumstances prevailing in their localities.