Energy efficiencyEnergy efficiency in buildings
Energy efficiency in buildings
Buildings account for 40% of energy consumption in most countries, yet their potential for energy efficiency is huge. By using adapted insulation and energy savings techniques, up to 80% of a building’s energy consumption for heating or cooling can be saved.
Buildings could be turned into climate savers rather than remaining energy wasters
Buildings are responsible for at least 40% of energy use in most countries. The absolute figure is rising fast, as construction booms, especially in countries such as China and India. It is essential to act now, because buildings can make a major contribution to tackling climate change and energy use.
Heating and cooling are the main energy consumers in buildings. The use of air condition is estimated to triple before 2030. Most of this energy is wasted due to inadequate insulation.
The huge potential of energy efficiency in buildings has been recognised. Progress can begin immediately because knowledge and technology exist today to slash the energy buildings use, while at the same time improving levels of comfort. By using well-proven energy efficiency measures , 70 to 90 % of a building’s energy need for heating or cooling can be cut.
A strategy for improved energy efficiency
of existing buildings is a necessity if the energy consumption is to be reduced significantly over a limited period of time. The life time of buildings ranges from 50 to 100 years and improvement of the existing building stock will thus have much higher impact than the tightening of requirements for new buildings.
“A building has a long life cycle, so its effect on the environment is a long and continuing issue to consider.”
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“Insulation is one of the few products that has no other purpose than to provide comfort and save energy.”