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OTTAWA — Energy-efficient lights and better-insulated freezers are saving discount retailer Giant Tiger enough energy to power 47 houses, Hydro Ottawa announced as it presented the chain with a conservation award Monday. The company used $25,000 in subsidies from the Ontario Power Authority’s “saveONenergy” program to install LED lights in parking lots and inside freezers — the technology uses less energy on its own and also generates less waste heat for the freezers to get rid of — in its food sections, and also installed new lids for freezer chests that do a better job keeping heat from bleeding in, Hydro Ottawa said.
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