Solar Modules

Purpose: Solar panels, or modules, are actually an assembly of solar cells, or photovoltaic cells, that convert light from the sun (which is composed of particles of energy called “photons”) into electricity that can be used to power electrical loads. This is known as the “photovoltaic effect” – hence the term “solar PV”.

Manufacturers: Coronal Development Services is not tied to one panel manufacturer. We pride ourselves on our ability to deliver the high quality monocrystalline, polycrystalline, and thin film modules (CdTe, CIGS, amorphous Si, microcrystalline Si) that match our project’s unique requirements. One commonality among the manufacturer’s we choose is that all come up with a 25 year manufacturer’s warranty, and have been pre-approved as “bankable” by the institutional investor community. Our recommended manufacturer’s include:

Quick Fact: The first photovoltaic module was built by Bell Laboratories in 1954. It was billed as a solar battery and was mostly just a curiosity as it was too expensive to gain widespread use. In the 1960s, the space industry began to make the first serious use of the technology to provide power aboard spacecraft.

Racking Systems

Purpose: Also known as “mounting systems”, roof and ground mount racking systems are designed to support solar modules at a specific angle while fixing a solar array to a roof or empty plot. Most mounting systems are comprised of a corrosion free aluminum or steel, and are designed to withstand even the toughest of outdoor elements for years.

Manufacturers: Coronal Development Services recommends:

Quick Fact: Most large-scale rooftop solar arrays are designed around a “ballasted” mounting system, which means the feet of mounting system are attached to ballast trays that are filled with concrete blocks. This system keeps arrays firmly on a roof without the need for roof penetrations. Coronal Development Services has successfully permitted and installed non-penetrating mounting systems on roofs situated in wind zones as high as 120 mph. Despite the added weight of a ballasted array, the total additional roof load for a typical installation is between 4-6 pounds per square foot.


Purpose: A solar inverter, or PV inverter, is a critical component of a photovoltaic system. It performs the conversion of the variable DC electricity that solar modules produce into a utility frequency AC current that can then be fed into a building’s electrical supply or the local grid. Solar inverters also have special functions adapted for use with PV arrays, including maximum power point tracking and anti-islanding protection.

Manufacturers: Coronal Development Services recommends:

Quick Fact: In the 1880’s a “War of Currents” was fought between Nicolas Tesla and Thomas Edison on whether the United States power system should be based on alternating or direct current. Tesla, with support from George Westinghouse, won this “war” by proving that alternating current was better for transmitting electricity over long distances. Today, the majority of the United States’ electrical distribution system is based upon alternating current (AC).


Purpose: Web based monitoring systems allow Coronal Development Services and its clients to monitor system production in real time, ensuring that a system is producing electricity as expected – and enabling a prompt response if it’s not. Web based reporting dashboards are available to anyone with web access and a username and password.

Typical monitoring system features include a weather station on site to help with remote diagnostics (example, determine if cloud cover is present) as well as automated reports available on a daily, weekly, and monthly basis. Alerts can also be programmed to automatically send to an email address or cell phone in the event of a performance issue.

Manufacturers: Monitoring systems are available through several inverter manufacturers, as well as third party monitoring software producers.

Quick Fact: Most monitoring systems not only report electricity production, they also translate production figures into environmental attributes such as metric tons of avoided CO2 – and what those equivalents mean (for example, passenger cars removed from the road or tons of landfill waste avoided). For many clients, environmental stewardship is an important component of a solar investment; therefore access to this information is important.