- factor vier
- factor 4
The goal of being twice as productive with half the resources (materials and
energy), leading to a factor 4 improvement in efficiency. Alternatively,
practices which are just as productive with 1/4 of the resources or 4 times as
effective with the same resources also count.
The concept was introduced in the 1998 book, Factor 4,
written by L. Hunter Lovins and Amory Lovins of the Rocky Mountain Institute,
and Ernst von Weizsäcker, founder of the Wuppertal Institute for Climate,
Environment & Energy. The book explains how relatively easy it is for
businesses to achieve these results with existing technologies. It has many
examples of real-world projects that save money and reduce pollution
simultaneously. Another way of phrasing the Factor 4 efficiency gain is that it
reduces energy and materials usage by 75%.
source: http://www.sustainabilitydictionary.com/
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