Solar FAQ

What is Photovoltaics (PV)?

Photovoltaic cells (PV) convert sunlight into electricity. PV cells are the same cells that are commonly used to power calculators and watches. When PV materials absorb sunlight, electrons flow through the material to produce electricity. PV cells are combined into modules that typically hold about 40 cells. These modules are mounted in arrays that can range from 10 to 75 feet long. PV cells use about 15% of the sunlight that hits their surface, meaning larger arrays are needed.

Can the solar panels be mounted on a roof or the ground?

Panels can be mounted either on the roof or the ground. Ground mounts are ideal for obstructed roofs or if the roof is shaded.

Does the system need to face South in the Northern Hemiphere?

A Southern-facing systems is optimal, but panels installed facing east or west still generate a very high percentage of potential power.

Are PV panels fragile?

The panels are made of tempered glass but are very strong, passing hail impact tests. PV systems are commonly installed in Arctic conditions.

How does the generated solar power get stored?

In a non-battery system, power is used immediately by the facility, not stored. It can also be sent backwards through the power meter, creating a credit with the power company. Batteries can be added to the system if storage is needed.