Introduction to Solar Electricity

Solar Electricity

When people think about alternative or renewable energy, the first image that comes to mind is often large blue or black panels on rooftops or portable highway signs that have a small panel attached. These solar panels, also known as photovoltaic (PV) modules, convert sunlight into electricity, and they have been the backbone of renewable energy for decades. The Photovoltaic Effect (how sunlight is converted into electrical energy) was discovered over a hundred years ago! Yet widespread implementation of this technology has been very gradual. Only in very recent years has photovoltaics gained wide popularity as an alternative way to produce electricity.

In 1958 the first PV modules were launched into space to power satellites. Even today, PV is the primary source of energy at the International Space Station. On Earth as well, PV has traditionally been used in areas where there is no practical source of electrical power but there is abundant sunshine. PV is often used for remote applications: like powering cabins, RVs, boats and small electronics when grid service is not available. Recently, “grid-interactive” PV systems have started gaining momentum as a cost-effective way to incorporate solar electricity into our everyday lives. Now we can take advantage of available solar energy while still enjoying the safety net of the utility grid.

Read on to learn more about PV modules, proper placement of your solar array, and various system considerations.