The efficiency rate of your home or commercial solar depends on the amount of sunlight hitting the panels, which gets converted into electrical energy. Photovoltaic (PV) systems normally have efficiencies of 15 percent to 18 percent. However, solar manufacturers in Florida and other US states that produce high-end products have an efficiency rate of over 20 percent.A highly-efficient PV system is one that generates more energy in a smaller area. Many factors determine a solar panel’s efficiency and that is why you should consider a few things before installing a PV system for residential or commercial purposes. For instance, the common misconception is to use price as an indicator of quality. This parameter might not always be correct. That is why, if you have more roof space, it may be smarter to install economically-priced panels instead of shelling out more money on premium products. Following are the most important determinants of a PV system’s efficiency:
Not all areas are blessed with the same amount of sunlight throughout the year. That’s why you must know the percentage of solar radiation received in a particular area. In other words, you must know your home’s or office’s relative insolation. It is critical in designing a budget-friendly solar array for your residence or commercial setup. The sun is in the highest position in the sky during the summer months and the lowest in winter. It implies that the production rate of your panels depends on the seasons. Your PV system will generate more electrical power in summer than during the cooler months. And in summer, you also consume more electricity, especially if you live in Florida, where you need to use air conditioners to stay comfortable indoors.
Shading has an adverse effect on a PV system’s performance. The time of the day during which your roof remains shaded also plays an important role. It is bad news if your home roof remains shaded from 9am to 3pm. It won’t affect the panel performance much if the roof remains shaded after 3pm. Consult your solar installer about the possible impact on the performance of your PV system if your roof is shaded. Partial shading is also an issue because all panels must operate at the same voltage. If one of the panels is partially shaded, it leads to a reduced energy production for the entire system. You can overcome this problem with the use of micro-inverters on the back of the panels.
- Panel Tilt or Inclination
Homeowners looking for solar panels often inquire whether they must use tilt frames to incline the panels or not. As an experienced installer in the Sunshine State, we would recommend that you spend a little more in investing in a few additional panels instead of using your hard-earned dollars in installing tilt frames. The production difference between a zero-degree roof and a twenty-five degree one is just five percent. So, tilt frames are not worth your money. Tilt frames may also be affected by winds and exert more pressure on the roof.
The efficiency of PV systems depends on many environmental factors. However, with professional design and installation, you can get rid of many of these problems. Coast to Coast Solar specializes in home and office installations. If you want to learn more about our PV systems, feel free to contact us.