Keep your insulation topped up and you'll reduce the wear and tear on these systems, and you can reduce your energy costs by up to 15 % per year. (moneysense.ca)
This webinar will present a step by step overview on how to reduce energy costs in your school building (s). (txcharterschools.org)
Seems like a very promising way to reduce the energy cost of cooling. (builditsolar.com)