This website provides examples of solar heating for a swimming pool, hot water supply and space heating in single and multi-family houses.

http://www.energytech.at/solar/portrait_kapitel-5.html

The Longar family from Ammanford recently purchased a solar water heating system. Their system incorporates two solar collectors, with a total surface area of 3.3 square metres, fitted onto their south west facing roof.

A new 170 litre "twin coil" solar cylinder has been fitted into their airing cupboard in place of their previous hot water cylinder, with the solar collectors and the boiler piped up to this new cylinder. Their new system will generate hot water energy of approximately 1,350 kilowatt hours per year, roughly 60% of their annual water heating energy needs. A digital display enables the family to see the temperatures in their system and, of course, they have "free" solar heated water running from their taps.

http://www.goingsolar.co.uk/sect1/subsect3/page4/

Universal Communication Systems, Inc. (OTC Bulletin Board: UCSY-News) subsidiary Millennium Electric T.O.U. Ltd announced that the company has completed the first Solar Powered water distillation system and associated projects using special new technology devices for inexpensive Solar Powered Water distillation in Greece.

The system is almost 70 sq. m in size including the PV Solar collectors and distillation device. It is capable of making over10, 000 litters of pure water daily out of wastewater.