These steps are how RMI design recommendations would reduce typical store electricity demand:
- High-efficiency refrigeration systems—saves up to 18 percent of the store’s total electricity use.
- Skylights, and high-efficiency interior and exterior lighting—saves 12 percent.
- HVAC efficiency: chilled water, efficient fans and ductwork, desiccant dehumidifier—saves 10 percent.
- Radiant heating and cooling—saves 6 percent.
- Superinsulated walls, tight construction—saves 3 percent.
- Greatly reduced infiltration at entrances (vestibules)—saves 3 percent.
Potential water savings and waste recovery, though smaller in total expenditures, are even more dramatic on a percentage basis. Water efficiency could reduce consumption by 80 percent:
- Xeriscaping—saves 28 percent.
- Low-flow restroom fixtures and sink aerators—save 23 percent.
- Rooftop rainwater capture and use—saves 11 percent.
- Kitchen improvements such as portable pressure washers and pre-rinse spray valves—save 5 percent.
- Reclaiming HVAC condensate—saves 3 percent.
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