What Is Solar Power?

Solar power is a method of using light
to generate electricity. The cells that
are the basis for this system are called
photovoltaic since they convert light
(photons) into electricity (volts).

Single crystal cells seem to work the best.
The most popular and cost-effective cells
are made from silicon. This material is a
semiconductor, which was stimulated by light
produces a small charge of direct current
(DC). Each cell produces about half a volt,
but putting them together in a panel can
produce significant amounts of energy.

Several types of solar power systems are
available. The simplest is a portable system
designed to power a single appliance.
These consist of a solar panel, a charge
controller, a battery, an inverter,(if the
appliance runs on AC) and the appliance.

These small systems have a limited capacity but come in very handy on motor homes and trailers since they run on DC and do not
require an inverter.

Most systems are designed to be tied to the grid; they produce electricity for your needs but when your needs fall below the power being generated you sell it to the power company.

Systems linked to the grid can be made with or without batteries. But batteries have some big disadvantages they can be costly, require maintenance, contain caustic chemicals are bulky and heavy and it work
poorly at low temperatures. The only advantage is a source of power whe the grid shuts down; a rare event in most places.

The basic grid-linked system has several solar panels, a DC disconnect, and inverter, an AC breaker panel, and a kilowatt meter. The most complete systems are interactive grid-tied systems but they require more equipment; more solar panels a DC disconnect, a charge controller, deep cycle batteries, an inverter, and AC breaker panel, and a kilowatt meter.

Completely independent systems also require a generator to supply additional power under certain conditions.

Most homeowners choose a system designed to provide some or most of their power needs.If their system is large they may choose to connect to the grid and sell it back to the power company.

Independent systems are rare, except in isolated areas.

The folks at Earth4Energy have prepared an illustrated guide to show you step-by-step how to build your own solar panels from these cells. You also get 3 additional videos to guide you thru every step , so you just can't go wrong.