systems use solar radiation to produce hot water mainly used for showers, washing
etc., but sometimes additionally for space heating and
(Photo Voltaic) systems use solar radiation
(sunlight) to produce
electricity for use in homes or other buildings.
extract low grade heat from the air or ground, rather like a fridge
in reverse. For every unit of electricity input, around 3
units of useful heat is delivered to the home.
Micro CHP replaces the gas boiler in a central
heating system. It burns gas to produce heating, whilst simultaneously generating
boilers burn wood pellets, chips or logs to produce heat in
a central heating system. Biomass is effectively zero
carbon over its life cycle; a typical system in a family home can save around 6 tonnes of CO2 annually.
Micro wind turbines generate
electricity from the energy in the wind striking the turbine. They are only effective when located in windy areas
remote from buildings or other obstructions; current products have
failed to perform well.
Mini wind turbines generate
electricity from the energy in the wind striking the turbine. Free-standing mini turbines are most effective when located in windy areas
remote from buildings or other obstructions.
systems produce power from the flow of water.
continuous power output resulting from this flow is a
valuable resource where available.