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TCAAP Energy Integration Resiliency Framework <br />Policy White Paper – Exhibit I - Definitions <br /> <br /> 66 <br />Daylighting – Designing buildings to maximize the use of natural daylight to reduce the need for electricity. <br />Demand-Side Management (Energy Efficiency) – A utility action that reduces or curtails end-use equipment or <br />processes. Energy Efficiency is often used in order to reduce customer load during peak demand and/or in times <br />of supply constraint. Energy Efficiency includes programs that are focused, deep, and immediate such as the <br />brief curtailment of energy-intensive processes used by a utility's most demanding industrial customers, and <br />programs that are broad, shallow, and less immediate such as the promotion of energy-efficient equipment in <br />residential and commercial sectors. <br />Demand-side management costs – The costs incurred by the utility to achieve the capacity and energy savings <br />from the Demand-Side Management Program. <br />Differential temperature (dT, delta T) – The difference between the supply temperature and return temperature <br />of the district heating water delivered to users. This is an indication of the amount of energy delivered to the <br />customer. <br />Distributed Control System (DCS) – A control system of an energy production plant and process wherein control <br />elements are not only located in central location but are also distributed throughout the system with each <br />component sub-system controlled by one or more controllers so the intelligence is distributed across the <br />sections of the system. <br />Distribution – The delivery of energy to retail customers. <br />District energy – A thermal energy delivery system that connects energy users with a central production facility. <br />Diversified load – The actual peak load on an energy system. The diversified load is less than the sum of the peak <br />loads of individual users due to the difference in time of day that each individual user realizes their peak load. <br />Distribution system – The underground piping network that delivers hot water from an energy production facility <br />to the customer buildings. Hot water is circulated through this distribution system using pumps that are located <br />at the production facility. <br />Domestic hot water – Potable water that is heated for use in faucets, showers, laundry, and similar uses. <br />Energy Conservation Measure (ECM) – This includes building shell conservation measures, HVAC conservation <br />measures, lighting conservation measures, any conservation measures, and other conservation measures <br />incorporated by the building. However, this category does not include any Energy Efficiencyprogram <br />participation by the building. Any Energy Efficiency program participation is included in the Energy Efficiency <br />Programs. <br />Energy Transfer Station – Equipment installed at the point of customer connection to the district energy system. <br />The energy transfer station is utilized to transfer and measure the thermal energy delivered from the district <br />energy distribution network to the customer’s building(s) or other thermal loads. <br />Energy Usage Intensity - The quantity of total energy that a building consumes per square foot per year. Energy <br />is usually expressed in terms of thousand british thermal units (KBtu/SF/year).