Before a solar PV installer even pulls out a hammer, the company will do a full and detailed site assessment to help determine the best size, location and configuration for your solar panels. The assessment has several parts and will result in a detailed site analysis and a quote on the best solar PV system for your needs. If you’re considering installing solar panels for your property, here’s what the surveyor will be looking for when he comes to assess your property for installation.
Location of the Solar Panels
In general, the best place to install solar panels is on a pitched roof, but there are exceptions. In some cases, there’s not enough roof space but the property does provide an appropriate place for a free-standing solar PV installation or is suitable for a wall-mounted installation.
The solar surveyor will be looking for an existing roof that faces south, southeast or southwest and that is pitched between 15 degrees and 45 degrees. A flat roof often provides the most flexibility. In either case, the surveyor can design or recommend a system that includes frames to position the solar panels at the perfect angle for your location.
The roof must also be large enough and sturdy enough to support the solar panels arrays that are the right size for your intended system. Or, more to the point, the size of your roof will play a major role in determining how much capacity your solar panels will deliver. Larger solar panels can generate more electricity. Likewise, more expensive, smaller arrays may also generate more electricity than larger, less efficient solar panels.
Mounting Options for Solar Panels
The solar surveyor will recommend a solar PV system that will collect optimal levels of the sun’s energy at your location. He may, for example, fit the panels directly to the roof if it provides an acceptable pitch. If the roof is too flat, the solar array may be mounted on an angled frame to position it at the best angle for collecting the sun’s rays. The solar PV designer will use information you provide along with his own observations to decide how to best configure your solar modules and mount your solar panels.
Shade and Obstruction Free
In addition to the right orientation and pitch, the surveyor will study the area around your property to determine if there are structures, trees or other obstructions that will cast shade on the location for the solar panels. Any shade will reduce the efficiency of the installed solar PV system because the panels generate electricity from the sun’s rays. If a shadow prevents the rays from hitting the solar array for part of the day, you’ll lose a portion of the surface area that could be generating electricity.
Once he has finished the survey, the solar installer will provide you with a detailed quote and answer any questions you may have. Most experts recommend that you get at least three quotes from solar panels installers before making your decision.
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