We hope this AERG will be a valuable resource to all grocery store energy managers, facility managers, owners, and other decision makers who seek to improve their buildings, save energy, increase profits, and provide an enhanced shopping environment .

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* UA o is often referred to as the building loss coefficient. It represents the rate of heat loss or gain of a house as a function of temperature between the inside and outside under steady-state conditions. † DOE-2.2 is an hourly building energy simulation software tool.

A net positive cash flow, meaning that the annual energy cost savings is greater than the annual payment of an energy efficiency investment. Energy Cost Savings: A reduction in utility bills resulting from an investment in energy efficiency. Energy Performance Guarantee: A guarantee from an energy service company or contractor ensuring that a certain level of energy savings is achieved. Energy Savings Threshold: The minimum desired energy savings that a building owner or evaluator expects to achieve cost effectively. Energy Service Company: A business that provides a wide range of energy saving services to a building owner. Energy Use Intensity: Normalized whole-building energy use by building square footage. EUI is represented in the units kBtu/ft 2 /year. Full Initial Costs: The total costs for an energy efficiency building improvement. Incremental Costs: The additional cost of an efficiency improvement that goes beyond the cost of a code-minimum system. Major Renovation: A comprehensive building renovation that includes an overhaul of the major building systems. Net Cash Flow: The difference between the expected annual energy cost savings and the total first year cost for an energy efficiency building upgrade. Net Initial Costs: Costs for energy efficiency building improvements that include relative first costs and incremental costs together. Split Incentive: A dynamic between a building owner and a tenant where the energy savings benefits may not impact the person who pays for the transaction.

This test and analysis protocol has been developed as a practical approach for measuring outside air distribution in homes. It has been used successfully in field tests and has led to significant insights on ventilation design issues. Performance advantages of more sophisticated ventilation systems over simpler, less-costly designs have been verified, and specific problems, such as airflow short-circuiting, have been identified.