Complete Solar Electric Systems.
What are the components of a solar electric system?
Technically, Solar PV panels (or PV modules) are usually over 1 sqm in area and consist of a series of individual low voltage photovoltaic cells wired together (in series) under a sheet of highly transparent, hard glass. The PV cells are usually made from one of three different types of semi-conductor material. The commonest are polycrystalline or monocrystalline silicon photovoltaics. These are usually the most cost effective PV panel materials. Polycrystalline PV panels tend to look slightly more textured and glittery than monocrystalline PV panels because the latter have fewer crystal edges to reflect light. However this is barely noticeable except, when you look at the PV cells close up.
What is a thin-film solar panel?
Many people are resistant to having solar panels installed on their homes because they believe the installation costs are too high. Initial installation costs of residential solar panels vary depending on a number of factors.
Solar System Basics - How Does Solar Power Work
On existing pitched roofs, Solartwin usually recommend solar PV panels which are mounted above the roof rather than integrated much more expensively within special solar PV tiles. (We want to give you value for money!) In our above roof PV mounting systems, rails are fixed over the roof tiles and firmly anchored to the structure beneath. (In roof integrated PV mounting systems, typically used on new build, the PV panels are fixed directly to the structure flush with the roof tiles. On flat roofs, solar PV panels are attached to pitched frames that are either fixed to the roof structure. If there is not a suitable roof, solar PV panels may sometimes be fitted to ground mounted frames. However this approach can raise security issues.)
Solar Basics - Drews Solar - Madison, WI | Solar Panel Energy
An off-grid solar system includes a battery bank as well as solar panels (so that you can have power when the sun isn't shining - like at night, and on cloudy days). Batteries require proper care (for example, they must not be over-drained) and some maintenance (some types require filling with water now and then). With proper care, they should last at least 10 years. Since most off-grid solar systems replace a gasoline or diesel generator, the fuel cost savings can be tremendous over just a few years, not to mention the reduced carbon emissions.