0 using little electricity, gas, etc.:
1 used to describe things that use only as much energy as is needed without wasting any:
In this section we model the different options available to the plants and the policies that will induce them to adopt the energy-efficient technology.
It may be assumed that an energy-efficient realization was not their goal.
So, they replaced the single compression spring with four extension springs and observed more energy-efficient movements.
284 will allow us to apply this energy-efficient concept in realworld applications.
Researchers have investigated more energy-efficient foodproduction systems, such as those that include legumes in rotation, and those that require less tillage2.
Within the rigid framework, both in terms of geometry and function, the design team set itself the challenge of designing energy-efficient buildings with a high-quality thermal and visual internal environment.
Typically, alternative products were not only energy-efficient but also labour-intensive ; as a result, industrial crops like saffron, teasels, woad, and flax engaged whole villages of underemployed men, women, and children.
So we should perhaps talk about finding other ways of promoting energy-efficient equipment and gradually removing the big energy wasters from the market.
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