Solar Panels

December 6, 2018

Solar Panels

By now everyone knows what a solar panels are but not the specifics. The Photovoltaic solar panels are the typical solar panel kits we see solar industries selling. These solar pv panels absorb sunlight as a source of energy to generate electricity. A photovoltaic (PV) module is a packaged, connected assembly of generally containing 6×10 photovoltaic solar cells. Photovoltaic modules generally need an array(a dozen) to be considered a commercial pv system that generates and supplies solar electricity.

This is because a single solar module can only produce a limited amount of power; most installations contain multiple modules. The pv system design typically includes an array of photovoltaic modules, an inverter, a battery pack for storage, interconnection wiring, and optionally a solar tracking system. These renewable energy source modules have helped solar transition into its form we see today. The price of solar electrical power has continued to fall so that in many countries it has become cheaper than ordinary fossil fuel electricity from the electricity grid since 2012, a phenomenon known as grid parity.

Solar modules are rated by their Direct Current power output as defined by standard test conditions, their commercial range is from 100 to 500 Watts (W). The efficiency of a module determines the area of a module given the same rated output. There are a few commercially available solar modules that exceed efficiency of 24%. Although this seems low, the solar panel cost will meet their value over time(it’s an investment). Solar panel conversion kit efficiency, typically in the 20% range, is reduced by dust, grime, pollen, and other particulates that accumulate on the solar panel. “A dirty solar panel can reduce its power capabilities by up to 30% in high dust/pollen or desert areas”, says Seamus Curran, associate professor of physics at the University of Houston and director of the Institute for NanoEnergy, which specializes in the design, engineering, and assembly of nanostructures. Paying to have solar panels cleaned is often not a good investment; researchers found panels that had not been cleaned, or rained on, for 145 days during a summer drought in California, lost only 7.4% of their efficiency. Overall, for a typical residential solar systems of 5 kW, washing panels halfway through the summer would translate into a mere $20 gain in electricity production until the summer drought ends—in about 2 ½ months. For larger commercial rooftop systems, the financial losses are bigger but still rarely enough to warrant the cost of washing the panels. On average, panels lost a little less than 0.05% of their overall efficiency per day.  Therefore solar panel cleaning will not return the worth of the solar panel cleaning service.

Solar modules have a strong durability they are able to withstand damage by rain, hail, heavy snow load, and cycles of heat and cold varies by manufacturer, although most solar panels on the U.S. market are UL listed, meaning they have gone through testing to withstand hail. Many crystalline silicon module manufacturers offer a limited warranty that guarantees electrical production for 10 years at 90% of rated power output and 25 years at 80%. Solar panel repairs are not uncommon because there is that chance they break. Solar energy is bound to give you a bright future, start your investment today!