There are basically two different ways in which solar energy can help with our energy needs. Photovoltaic solar panels generate electricity from the sun's rays using cells the panel. Solar water heating by contrast, uses the heat from the sun directly to heat water, either in a swimming pool or as part of a hot water system in an office or home.
Low heat systems most appropriate for swimming pools - they are usually at the base of the pool. They trap the suns eat and slowly release it via the water. They are simple to install, but can be quite expensive. More ambitious systems have solar panels affixed to a water tank, usually on the roof of a building. Water is then passed from the tank into the "traditional" boiler. In some cases, 50% of the hot water needs for a small home can easily be met with solar heating panels.
An average family should expect to invest roughly £4,800 in a solar water heating system. This price does not include professional installation, which is worth considering unless you are an expert. However, they tend to be very cheap to maintain, which is a bonus.
Solar water heating (SWH) or solar hot water (SHW) systems comprise several innovations and many mature renewable energy technologies that have been well established for many years. SWH has been widely used in Australia, Austria, China, Cyprus, Greece, India, Israel, Japan and Turkey.