solar photovoltaic panels
At Planet Traveler, a portion of our electricity comes from the building’s impressive 4.7kW photovoltaic array, which also doubles as a shade awning over the rooftop bar.
We’ve kept our energy needs low by using LED lighting building-wide, so lighting the entire building only takes 1,500W – that’s less energy than it takes to run a hairdryer or a 4-slice toaster. And when we produce more electricity than we consume, we move that power out to the grid.
how it works
A photovoltaic system, also PV system or solar power system, is a power system designed to supply usable solar power by means of photovoltaics. It consists of an arrangement of several components, including solar panels to absorb and convert sunlight into electricity, a solar inverter to change the electric current from DC to AC, as well as mounting, cabling, and other electrical accessories to set up a working system. It may also use a solar tracking system to improve the system’s overall performance and include an integrated battery solution, as prices for storage devices are expected to decline. Strictly speaking, a solar array only encompasses the ensemble of solar panels, the visible part of the PV system, and does not include all the other hardware, often summarized as balance of system (BOS).
Sources : Wikipedia, PBworks