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Category:Energy efficiency

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Please insert a brief topic summary here (take from the summary on the the topic page).
Topic page: Energy efficiency

Pages in this category (listed below) may include subtopics, how-tos, projects, designs, organizations and more.



See also Category:Energy conservation

Subcategories

This category has the following 9 subcategories, out of 9 total.

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Pages in category "Energy efficiency"

The following 133 pages are in this category, out of 133 total.