An online clean technology database

Use of primary energy sources

High performance building façades © ClimateTechWiki and respective owners

The building façade is the interface between the external and internal environments of a building. Therefore, it has a large impact on occupants’ interface with the surrounding environment; energy...

Highly efficient heating, ventilation and air conditioning © ClimateTechWiki and respective owners

Heating, ventilation and air conditioning (HVAC) systems supply fresh air and condition the indoor air temperature and humidity of a building. HVAC is reported as the key energy user (37%) in US...

Household biogas digesters © ClimateTechWiki and respective owners

Biogas is a flammable gas produced by organic materials after it has been decomposed and fermented by anaerobic bacteria in tightly sealed environmental digesters under certain temperature,...

Hybrid Electric Vehicles Hybrid electric bus (source: http://www.pcac.org/category/councils/page/4/)

One approach to lowering the CO2 emission from traffic is the hybridization of vehicles. A hybrid vehicle uses two or more distinct power sources, i.e. hybrid electric vehicles (HEVs)...

Hybrid Technology © ClimateTechWiki and respective owners

Hybrid technology systems combine two or more technologies with the aim to achieve efficient systems. Possible combinations are: wind-solar photovoltaic (PV) hybrid systems, wind-diesel hybrid...

Hydro Dams for Large-Scale Electricity Supply image large scale hydro

Hydro power plants capture the energy released by water falling through a turbine and converts this into mechanical power, which drives generators to produce electricity. Today’s hydropower...

Hydrogen technologies Utsira Wind-Hydrogen Site

Hydrogen is considered an important fuel for future use in transportation, central and distributed electric power, portable power and combined heat and power for industrial development. The...

Improved Cook Stoves © ClimateTechWiki and respective owners

Since about 1.5 billion people in the world use traditional stoves for cooking (and heating), efforts to improve the efficiency of cookstoves have been increasingly popular in the developing world...

Improving Private Vehicle Operating Standards In Cairo and elsewhere in the world older vehicles need to be replaced

The measures outlined in this section are part of a bigger picture. Reduced greenhouse gas emissions will result from shifts to other transport modes, from reduced levels of travel,...

Influencing travel choices © ClimateTechWiki and respective owners

Travel is complex in the modern world, especially in cities. There are a large number of ways of getting around: cars and taxis and auto-rickshaws; bicycles, motor scooters and motorcycles; buses...

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