Q How does solar equipment work?
A Solar panels turn daylight and sunlight into electricity. The cells absorb the light and produce electric voltage, solar cells do not store any electricity so all power produced is fed through a regulator to the battery and stored there.
Q Do solar panels require maintenance?
A The only maintenance is cleaning with a damp cloth from time to time.
Q How long do solar panels last?
A Life expectancy is greater than 25 years depending on type. All parts are designed for outside use.
Q Is there something to stop electricity flowing back into the solar panel at night?
A Some solar panels have bypass diodes integrated into the panel to stop this but it is always worth checking on any proposed purchase.
Q What angle should my solar panel be positioned at?
A Try using a volt meter on the panel on a fairly bright day to see what is best for your location, but generally for the UK an angle of 35 - 45 degrees would be suitable.
Q Do solar panels still produce power on cloudy days?
A Solar panels continue to produce power but on a reduced basis.
A Once you know your average power consumption and the amount of sunlight you receive each day, you are ready to calculate the number of panels you’ll need. It is easy. First divide the total watts you use each day by the hours of sun you receive. That is the number of watts you need to generate in one hour. Solar panels are rated in watts. For instance, a 200-watt solar panel will produce 200 watts of power each hour of peak sunlight. Therefore, if you need to produce 500 watts of power each hour then you’ll need five 100W solar panels. Note that panel ratings vary, meaning you could choose five 100W panels, ten 50W panels, or just one 500W panel. You get the picture…Also keep in mind that while some people do get all their power from solar panels, most use solar panels to supply a percentage of their electrical needs. You can always start small and add on later. Think about your energy goals, the amount of money you hope to save each month, and how much you can afford to pay for a system up-front.
Q What is my daily power consumption?
A You need to calculate how much power, in watts, you use on a daily basis. Your electric bill will be necessary for this. A lot of utilities actually break this down for you in your monthly statements.
Q How much sunlight do I get per day?
A Another thing you’ll need to know is the average amount of peak sunlight you get per day. This means yearly average. So don’t think summer hours; many areas get great sun in the summer but you might not see it for what feels like a month in the winter. Be sure to calculate the average…and be conservative.
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