Solar Photovoltaic

Neville has an Associates of Science (AAS) degree in Solar Photovoltaic (PV) systems and has passed the national NABCEP 'Certificate of Knowledge' exam. He can guide you on the appropriate design and installation of Solar PV systems.

About Solar PV:

Solar Photovoltaic (PV) systems generate electricity using the sun's energy. When sunlight hits the surface of a solar panel the photon of energy excites the electrons in the silicon cells causing them to move. This flow of electrons generates direct current (DC).

For electric grid-tied systems (most urban areas), the electricity is fed through an inverter where it is converted into alternating current (AC) that is used by most electrical appliances and lighting fixtures within the home. In off-grid systems (rural areas not connected to a utility line), DC appliances can use the DC current directly without inverting it. Alternately, the direct current is transmitted through a charge controller to a battery bank and then an AC inverter to feed AC appliances.

Types of Solar PV Cells include monocrystalline, multicrystalline, and amorphous (thin-film). Monocrystalline is the most expensive and has the highest efficiency (almost 23%) of converting sunlight into energy. Multicrystalline is in the middle for efficiency (almost 17%) and cost. Amorphous is the least expensive and has the lowest efficiency (about 12%). Multijunction cells with much higher efficiency (about 44%) are currently used in satellites, and as cost come down may enter the commercial market in the future.

Building Integrated Photovoltaic (BIPV) deals with the components of a building that have been engineered to incorporate solar photovoltaic technology. Due to their higher cost, they are primarily used in commercial and institutional projects. Examples include - Standing Seam Metal Roofs; Rolled Roofing Sheets; Shades for Walkways; Shades for Windows; Modified Window Assemblies (integrated into the vertical facade of a building); and Modified Skylights. Some instances of BIPV in residential applications include solar roofing tiles and solar panels incorporated into patio or deck canopies.