Solar Panels For Homes: How To Pick Them Right
Our sun is a source of renewable energy called solar energy. Solar cells are employed to convert this energy into electricity. Solar cell is also known as photovoltaic cell or PV for short. Only a small amount of elecrticity is generated by one solar cell, so solar cells are organized and packaged into panels. At present one can get both commercial solar panels and solar panels for homes.
Crystalline silicon is frequently the material used for solar cells. When open to sun, wafer-based crystalline silicon cells generate electricity. An average of 13% of solar power is converted to electrical power. At present, 18% is achieved, but 30% is a targeted value by researchers.
If you plan to install a solar-powered system for your house, solar panels for homes are the major piece of equipment you need. In general, manufacturing methods and materials used vary for each type of panels one can find in the market, so you ought to understand the requirements of your system to be able to choose the right solar panel for your home.
One thing to remember is whether your system will be stand-alone or connected to the grid. In addition to that consider your geographical area and identify the correct solar panel for your location. If you reside in a place where the sun always shines, buy the concentrating solar collectors. These types of panels are angled to collect direct sun rays. Otherwise, get the non-concentrating solar collectors, because they can absorb reflected sun rays as well.
Solar panels that can be used in your residence are available in different power output ratings, from 60-190 watts. If you require greater output than 190 watts, you need to buy more panels and set up an array of panels.
Depending on the brandname, a solar panel is priced approximately $1,000. Mitsubishi, Sharp, Evergreen, Kyocera, Sanyo and Uni-Solar are popular brands. These products come with a 20-year warranty. In you can, choose brands that have low manufacturing impact on nature.
You need to keep in mind the efficiency of specific brands because systems with greater efficiency will pay for themselves faster. Efficiency of between 16 and 18% is already good, and expect around 10-year payback period. This will be cut to four years when panels with 25% efficiency would be available in the future.
With brand new panels costing around $1,000 each, the entire system for your house can cost you up to $20,000, provided that a contractor installs it for you. If you are able to do it yourself, the cost would be cut to less than half. You can save more if you buy broken panels and fix them yourself.
The market trend for solar panels is towards less expensive panels. In addition, both the federal and state governments offer incentives that help reduce the total cost of a solar energy system. Keeping these factors in mind, many households are thinking about installing solar energy system for their homes.
$20,000 for the cost of a system that could power a medium-size home is still beyond affordability for the majority of homeowners. The solution then is to get a system that only partially covers the energy requirements. Solar panels for homes could be installed for $5,000 and are enough to take 30% of the energy requirements. The number of residences powered by solar panels for homes is expected to increase in the future, thus sustaining a greener planet.
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