How do solar panels work?

With solar, the scientific process of converting sunshine into electricity, although complicated, is a very efficient process as a result of years of research. Solar electricity is generated by a group of solar modules (also referred to as a solar array) that's installed on your roof. When sunlight comes in contact with solar modules, DC electrical current (direct current) is created instantly. The DC electricity is then fed into an inverter which converts the DC current into standard AC electricity (alternating current) - the same kind your home already uses.

Is Solar Power Reliable?

Solar electricity has been in experimentation with for over 3 decades and has proven to be highly dependable. Unlike other methods used to generate electricity, solar does not rely on moving parts and expensive infrastructure to get power from a utility. The power generation in solar is happening close to the output source. Utilities often struggle to cope with demand on really hot days due to the use of air conditioners. A solar system will ensure your house or business is powered up when you need it the most especially on those blistering hot Perth days.

What sort of maintenance is required?

Solar modules/panels should be free off all debris that blocks sunlight and reduces efficiency.

Photovoltaic array explained in detail.

A photovoltaic array is a linked collection of photovoltaic modules, which are in turn made of multiple interconnected solar cells. The cells convert solar energy into direct current electricity via the photovoltaic effect. The power that one module can produce is seldom enough to meet requirements of a home or a business, so the modules are linked together to form an array. Most PV arrays use an inverter to convert the DC power produced by the modules into alternating current that can plug into the existing infrastructure to power lights, motors, and other loads. The modules in a PV array are usually first connected in series to obtain the desired voltage; the individual strings are then connected in parallel to allow the system to produce more current. Solar arrays are typically measured by the peak electrical power they produce, in watts, kilowatts, or even megawatts.

For more visit: http://en.wikipedia.org/wiki/Photovoltaic_array