Vending Machine Removal
In 2005, there were 56 refrigerated soda vending machines on the Mount Holyoke campus. A soda machine, which runs 24/7, uses a lot of energy, about 10 times the electricity of a home refrigerator. That crop of 56 machines was costing MHC about $27,000 a year to run.
A group from Dining Services and Facilities Management reviewed the income from all the vending machines, and recommended 12 low-volume units for removal. Removing those 12 machines is saving an estimated $6,200 a year in electricity.
In the summer of 2006, 26 machines were fitted with Vending Misers. A Vending Miser consists of a motion sensor and control box that shuts the machine down when nobody is near. This saves about 35% of the electricity required to run the unit. The controls measure ambient temperature, to start the machine occasionally to keep the soda cool in warm weather, and let the refrigeration system shut down normally to keep from harming the compressor.
The 26 machines are located in the residence halls, and in Blanchard, Kendade, and Kendall. Each has a sticker explaining how the Vending Miser works. Combined with the low-volume machine removals, this effort will save $10,000 a year."
But money isn't all we're saving. Saving electricity also saves the greenhouse gases that would have been generated by the plants that make our electricity. This effort will save 27 tons of carbon dioxide per year, equivalent to taking 5 cars off the road or planting 7 acres of forest.
For more information on vending machines, please visit the following web sites: