MEDFORD TOWNSHIP SCHOOL DISTRICT MEMORIAL MIDDLE SCHOOL 55 MILL STREET MEDFORD, NJ FACILITY ENERGY REPORT

Transcription

1 MEDFORD TOWNSHIP SCHOOL DISTRICT MEMORIAL MIDDLE SCHOOL 55 MILL STREET MEDFORD, NJ FACILITY ENERGY REPORT

2 TABLE OF CONTENTS I. HISTORIC ENERGY CONSUMPTION/COST... 2 II. FACILITY DESCRIPTION... 7 III. MAJOR EQUIPMENT LIST IV. ENERGY CONSERVATION MEASURES V. ADDITIONAL RECOMMENDATIONS Appendix A ECM Cost & Savings Breakdown Appendix B New Jersey Smart Start Program Incentives Appendix C Portfolio Manager Statement of Energy Performance Appendix D Major Equipment List Appendix E Investment Grade Lighting Audit March 3, 2014 FINAL Page 1 of 46

3 I. HISTORIC ENERGY CONSUMPTION/COST The energy usage for the facility has been tabulated and plotted in graph form as depicted within this section. Each energy source has been identified and monthly consumption and cost noted per the information provided by the Owner. Electric Utility Provider: Electric Utility Rate Structure: Third Party Supplier: Power Purchase Provider: PPA Rate Structure: PPA Energy Source: Natural Gas Utility Provider: Utility Rate Structure: Third Party Supplier: Public Service Electric & Gas Large Power & Light (LPLS) South Jersey Energy Co; Champion Energy Services Nautilus Solar Annual Fixed Price per kwh Onsite Solar South Jersey Gas Firm Transportation Hess; Constellation The electric usage profile represents the actual electrical usage for the facility. The electric utility measures consumption in kilowatt-hours (KWH) and maximum demand in kilowatts (KW). One KWH usage is equivalent to 1000 watts running for one hour. One KW of electric demand is equivalent to 1000 watts running at any given time. The basic usage charges are shown as generation service and delivery charges along with several non-utility generation charges. Rates used in this report reflect the historical data received for the facility. The district entered into a Power Purchase Agreement to purchase electric supply generated by an onsite solar array. The district is responsible for purchasing all of the power generated by the system at a fixed price per kilowatt-hours (KWH). New Jersey s net metering guidelines allow them to get an on bill credit for exported KWH, to be utilized in the months to follow, up until the annual balance date when any remaining credit of KWH is paid to the owner based on average electric market pricing for the year. The Electric Billing Data summarized in Table 1 reflect the net electric used by the facility based on utility purchased electric and onsite solar. The gas usage profile within each facility report shows the actual natural gas energy usage for the facility. The gas utility measures consumption in cubic feet x 100 (CCF), and converts the quantity into Therms of energy. One Therm is equivalent to 100,000 BTUs of energy. March 3, 2014 FINAL Page 2 of 46

4 Table 1 Electricity Billing Data ELECTRIC USAGE SUMMARY Utility Provider: PSEG; Nautilus Solar Rate: LPLS Meter No: Account No: Third Party Utility Provider: SJ Energy / Champion Energy Services TPS Meter / Acct No: - MONTH OF USE CONSUMPTION KWH DEMAND KW TOTAL BILL Jan , $14,682 Feb , $14,950 Mar , $13,731 Apr , $11,794 May , $13,646 Jun , $12,841 Jul-12 76, $9,785 Aug-12 58, $8,913 Sep , $15,612 Oct , $15,469 Nov , $11,587 Dec , $11,769 Totals 1,232, Max $154,779 AVERAGE DEMAND KW average AVERAGE RATE $0.126 $/kwh March 3, 2014 FINAL Page 3 of 46

5 Figure 1 Electricity Usage Profile March 3, 2014 FINAL Page 4 of 46

6 NATURAL GAS USAGE SUMMARY Table 2 Natural Gas Billing Data Utility Provider: South Jersey Gas Rate: Firm Transportation Meter No: Account No: Third Party Utility Provider: Hess; Constellation TPS Meter No: - CONSUMPTION MONTH OF USE (THERMS) TOTAL BILL Jan-12 5, $5, Feb-12 4, $5, Mar-12 2, $2, Apr-12 1, $1, May $ Jun $ Jul $97.63 Aug $85.18 Sep $ Oct $ Nov-12 3, $3, Dec-12 4, $4, TOTALS 23, $24, AVERAGE RATE: $1.01 $/THERM March 3, 2014 FINAL Page 5 of 46

7 Figure 2 Natural Gas Usage Profile March 3, 2014 FINAL Page 6 of 46

8 II. FACILITY DESCRIPTION The Medford Memorial Middle School is located at 55 Mill Street in Medford, New Jersey. The 118,750 SF building was built in 1968 with four additions occurring in 1971, 1973, 1985, and The facility is a single-story building comprised of a main office, classrooms, a gymnasium, a cafeteria/stage, a media center, offices, restrooms, and utility/storage rooms. Occupancy Profile The typical hours of operation for the middle school is Monday through Friday between 6:00 am and 3:00 pm, with custodial staff on site afterhours till approximately 7:00 pm. Additional events occur throughout the year after hours in the facility. The school s normal operations span 10 months. The Middle School has an approximate enrollment of 725 students and 75 staff. Building Envelope Exterior walls for the school are masonry brick faced with concrete block interior walls. The windows throughout the school vary by addition with the older sections consisting of single pane operable clear windows with aluminum frames, newer section has double pane coated windows with wood frames. The roof is comprised of a combination of sloped metal roofing, and flat and sloped cold tar roofing. HVAC Systems The Boiler Plant consists of six Aerco KC-1000 condensing style boilers with a rated thermal efficiency of 86%. The boilers fire on as necessary to meet the building load and are fitted with outdoor air reset controls. These boilers provide heating hot water for the unit ventilators and heat pump systems in the building. Heating water is distributed by two constant volume 10 horsepower pumps with a flow rating of 260 gallons per minute and 75 foot of head pressure. The heat pump loop water is distributed by two constant volume 15 horsepower pumps with a flow rating of 450 gallons per minute and 85 foot of head pressure. The Chiller Plant consists of two MultiStack water-cooled chillers rated at 90 tons of cooling each. The units have an estimated full load efficiency of kw/ton of cooling. Chilled water is distributed to the building via two constant volume 20 horsepower pumps, no flow rating was available. The condenser water heat from the chillers and heat pump loop is rejected to an Evapco closed circuit cooling tower located outside fitted with a variable speed drive fan. The condenser water is distributed by two constant volume 40 horsepower pumps with a flow rating of 1350 gallons per minute and 75 foot of head pressure. The school is conditioned by multiple system types throughout the building that include unit ventilators, fan coils, water source heat pumps, and air handlers. The original building and 71/ 73 addition have unit ventilators with hot water heating and ceiling mounted fan coils with chilled water to provide cooling. The 1985 and 1997 additions are conditioned by water source heat pump units to provide heating and cooling. March 3, 2014 FINAL Page 7 of 46

9 The Media Center is conditioned by four large vertical McQuay water source heat pumps from 70 to 100 MBH of cooling capacity. These units have an EER of approximately 11.5 and COP of 3.8. The heat pumps are connected to a single SEMCO Energy Recovery air handlers rated at 2500 cubic feet per minute (CFM) of airflow that pre conditions outdoor air for the system. The cafeteria and stage are conditioned by a single McQuay four pipe air handler with chilled and hot water. Supplemental cooling and heating is provided by vertical water source heat pumps located in the seating section and serving line. The Large Group Instruction is conditioned by a single McQuay four pipe air handler with chilled and hot water. The space has supplemental heating provided by hot water radiators located underneath each window. The gymnasium is conditioned by two ceiling hung McQuay air handlers with chilled and hot water. The air handlers, unit ventilators, fan coils, and heat pumps were all fitted with 3-way valves on the chilled and hot water distribution systems. Exhaust System Toilet exhaust air is relieved through roof mounted exhaust fans with small horsepower fan motors. The kitchen also has a general exhaust fan and two exhaust fans dedicated to the hoods, note one hood appeared to be used for food warming or serving standby. HVAC System Controls The HVAC systems within the building are controlled through a combination Delta Control System and ASI System. The Delta System is local only and controls the heat pump and fan coil systems. The ASI System controls the chilled water system and hot water system, and maintains a global system schedule for systems under its control. Domestic Hot Water Domestic hot water for the facility is provided by a single Aerco 1,000 MBH KC series boiler connected to a 200 gallon Bradford and white storage tank. The storage tank is maintained at a temperature of 130 degrees Fahrenheit. Typical plumbing fixtures through the facility restrooms consist of standard 2.2 gallon per minute rated sinks with either manual or timed off faucets. It was noted during the survey that some sinks were missing aerators to regulate flow. The toilets were fitted with manual flush valves and had ratings of 1.6 gallons per flush. Urinals consisted of manual and automatic flush valves rated at approximately 1.0 gallons per flush. March 3, 2014 FINAL Page 8 of 46

10 Lighting Refer to the Investment Grade lighting Audit Appendix for a detailed list of the lighting throughout the facility and estimated operating hours per space. Kitchen Equipment The kitchen located in the middle school is responsible for providing meal service for most of the schools in the district. The kitchen has one main large grease exhaust hood, and one secondary hood. The main hood has electric cooking equipment that consists of an 11 kw oven, electric fryer, two steam kettles, and one steam convection oven. There are two walk-in freezers and one walk-in refrigerator to store food each with evaporators fitted with three circulation fans. The kitchen also has a single dishwasher model CMA-44H with a 36 kilowatt electric booster heater. March 3, 2014 FINAL Page 9 of 46

11 III. MAJOR EQUIPMENT LIST The equipment list contains major energy consuming equipment that through implementation of energy conservation measures could yield substantial energy savings. The list shows the major equipment in the facility and all pertinent information utilized in energy savings calculations. An approximate age was assigned to the equipment in some cases if a manufactures date was not shown on the equipment s nameplate. The ASHRAE service life for the equipment along with the remaining useful life is also shown in the Appendix. Refer to the Major Equipment List Appendix for this facility. March 3, 2014 FINAL Page 10 of 46

12 IV. ENERGY CONSERVATION MEASURES Energy Conservation Measures are developed specifically for this facility. The energy savings and calculations are highly dependent on the information received from the site survey and interviews with operations personnel. The assumptions and calculations should be reviewed by the owner to ensure accurate representation of this facility. The following ECMs were analyzed: Table 1 ECM Financial Summary ENERGY CONSERVATION MEASURES (ECM's) ECM NO. DESCRIPTION NET INSTALLATION COST A ANNUAL SAVINGS B SIMPLE PAYBACK (Yrs) SIMPLE LIFETIME ROI ECM #1 Lighting Upgrade - General $326,280 $19, % ECM #2 Lighting Upgrade - Gymnasium $7,800 $1, % ECM #3 Lighting Upgrade - Exterior $23,120 $6, % ECM #4 Lighting Controls $19,310 $4, % ECM #5 Electric to Gas Kitchen Equipment $72,501 $1, % ECM #6 Gas Fired Booster Heater $11,000 $ % ECM #7 Kitchen Hood Controls $16,500 $1, % ECM #8 Walk-In Controls $9,775 $ % ECM #9 Refrigerator Replacement $2,250 $ % ECM #10 Water Conservation $1,100 $ % ECM #11 DDC Controls Upgrade $150,000 $4, % ECM #12 Window Upgrade $130,000 $2, % Notes: A. Cost takes into consideration applicable NJ Smart StartTM incentives. B. Savings takes into consideration applicable maintenance savings. March 3, 2014 FINAL Page 11 of 46

13 Table 2 ECM Energy Summary ENERGY CONSERVATION MEASURES (ECM's) ECM NO. ECM #1 Lighting Upgrade - General ,795 - ECM #2 Lighting Upgrade - Gymnasium 3.1 8,112 - ECM #3 Lighting Upgrade - Exterior ,923 - ECM #4 Lighting Controls - 35,658 - ECM #5 DESCRIPTION Electric to Gas Kitchen Equipment ELECTRIC DEMAND (KW) ANNUAL UTILITY REDUCTION ELECTRIC CONSUMPTION (KWH) NATURAL GAS (THERMS) - 12,235-2,092 ECM #6 Gas Fired Booster Heater - 9, ECM #7 Kitchen Hood Controls - 15,803 - ECM #8 Walk-In Controls - 6,747 - ECM #9 Refrigerator Replacement - 1,278 - ECM #10 Water Conservation ECM #11 DDC Controls Upgrade - 27, ECM #12 Window Upgrade - 1,002 2,338 Notes: A. Utility reductions denoted with a "-" means there are no associated savings for that measure. March 3, 2014 FINAL Page 12 of 46

14 Table 3 ECM Emissions Summary ENERGY CONSERVATION MEASURES (ECM's) ECM NO. ECM #1 Lighting Upgrade - General 238, ,019 ECM #2 Lighting Upgrade - Gymnasium 12, ECM #3 Lighting Upgrade - Exterior 74, ECM #4 Lighting Controls 54, ECM #5 DESCRIPTION Electric to Gas Kitchen Equipment GREENHOUSE GAS EMISSIONS REDUCTION CO 2 EMISSIONS (LBS) NO X EMISSIONS (LBS) SO 2 EMISSIONS (LBS) (5,879) ECM #6 Gas Fired Booster Heater 9, ECM #7 Kitchen Hood Controls 24, ECM #8 Walk-In Controls 10, ECM #9 Refrigerator Replacement 1, ECM #10 Water Conservation 1, ECM #11 DDC Controls Upgrade 51, ECM #12 Window Upgrade 28, Notes: A. Emissions Reduction based on NJCEP published factors for electric & gas. March 3, 2014 FINAL Page 13 of 46

15 Table 4 Facility Project Summary FACILITY PROJECT SUMMARY TABLE ENERGY CONSERVATION MEASURES ANNUAL ENERGY SAVINGS ($) PROJECT COST ($) SMART START INCENTIVES CUSTOMER COST SIMPLE PAYBACK Lighting Upgrade - General $19,756 $332,000 $5,720 $326, Lighting Upgrade - Gymnasium $1,022 $9,000 $1,200 $7, Lighting Upgrade - Exterior $6,164 $25,000 $1,880 $23, Lighting Controls $4,493 $22,000 $2,690 $19, Electric to Gas Kitchen Equipment $1,594 $75,000 $2,499 $72, Gas Fired Booster Heater $792 $14,500 $3,500 $11, Kitchen Hood Controls $1,991 $17,000 $500 $16, Walk-In Controls $850 $10,000 $225 $9, Refrigerator Replacement $483 $2,250 $0 $2, Water Conservation $500 $1,100 $0 $1, DDC Controls Upgrade $4,000 $150,000 $0 $150, Window Upgrade $2,488 $130,000 $0 $130, Total Project $44,133 $787,850 $18,214 $769, Note the measure totals in this table do not take into account interactive effects of measures; see Method of Analysis Section III in Executive Report for further explanation. March 3, 2014 FINAL Page 14 of 46

16 ECM #1: Lighting Upgrade General Description: The majority of the interior lighting throughout Memorial Middle School is provided with fluorescent fixtures with older generation, 32W T8 lamps and electronic ballasts. Although these T8 lamps are considered fairly efficient, further energy savings can be achieved by replacing the existing T8 lamps with new LED tube style lamps. In addition to the fluorescent tube lamps there are additional fixture types consisting of metal halide lamps and incandescent lamps. These too can be retrofitted to LED style lamps. This ECM includes retrofitting the interior lighting (excluding gymnasium) with new LED type screw in based lamps and fluorescent tube lamps. It is recommended the District consult with a professional engineer prior to retrofitting fixtures to ensure code required minimum light levels will be met. Energy Savings Calculations: The Investment Grade Lighting Audit Appendix outlines the hours of operation, proposed retrofits, costs, savings, and payback periods for each set of fixtures in the each building. LIGHTING UPGRADE SAVINGS SUMMARY DESCRIPTION SAVINGS Electric Demand Savings (kw) 60.6 Electric Usage Savings (kwh) 156,795 Electric Cost Savings ($) $19,756 March 3, 2014 FINAL Page 15 of 46

17 Energy Savings Summary: ECM #1 - ENERGY SAVINGS SUMMARY Installation Cost ($): $332,000 NJ Smart Start Equipment Incentive ($): $5,720 Net Installation Cost ($): $326,280 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $19,756 Total Yearly Savings ($/Yr): $19,756 Estimated ECM Lifetime (Yr): 10 Simple Payback 16.5 Simple Lifetime ROI -39.5% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $197,560 Internal Rate of Return (IRR) -8% Net Present Value (NPV) ($157,757.31) March 3, 2014 FINAL Page 16 of 46

18 ECM #2: Lighting Upgrade Gymnasium Description: The gymnasium is light by low bay type 250 watt magnetically ballasted high intensity discharge lamps. These older style fixtures can be replaced with new more efficient fluorescent T5 high output fixtures that can provide equivalent if not improved light output. While there are currently LED options for gymnasium lighting, the cost of these fixtures are still relatively high compared to a T5 system that can provide similar energy savings benefits at a reduced cost. This ECM would replace the existing gym lighting with new high output T5 4 fluorescent high bay fixtures with cage guards. Energy Savings Calculations: The Investment Grade Lighting Audit Appendix outlines the hours of operation, proposed retrofits, costs, savings, and payback periods for each set of fixtures in the each building. Energy Savings Summary: LIGHTING UPGRADE SAVINGS SUMMARY DESCRIPTION SAVINGS Electric Demand Savings (kw) 3.1 Electric Usage Savings (kwh) 8,112 Electric Cost Savings ($) $1,022 ECM #2 - ENERGY SAVINGS SUMMARY Installation Cost ($): $9,000 NJ Smart Start Equipment Incentive ($): $1,200 Net Installation Cost ($): $7,800 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $1,022 Total Yearly Savings ($/Yr): $1,022 Estimated ECM Lifetime (Yr): 10 Simple Payback 7.6 Simple Lifetime ROI 31.0% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $10,221 Internal Rate of Return (IRR) 5% Net Present Value (NPV) $ March 3, 2014 FINAL Page 17 of 46

19 ECM #3: Lighting Upgrade Exterior Lighting Description: The exterior lighting at Memorial Middle School is currently lit by various high pressure sodium and metal halide fixtures. The exterior would be better served with more efficient LED lighting system. Concord Engineering recommends upgrading the lighting to an energy-efficient LED lighting system that includes LED lamps for the existing metal halide and high pressure sodium fixtures on the exterior. This ECM would replace the existing exterior fixtures with equivalent LED exterior luminaire fixtures. Energy Savings Calculations: A detailed Investment Grade Lighting Audit can be found in Investment Grade Lighting Audit Appendix that outlines the proposed retrofits, costs, savings, and payback periods. Energy Savings Summary: LIGHTING UPGRADE SAVINGS SUMMARY DESCRIPTION SAVINGS Electric Demand Savings (kw) 13.7 Electric Usage Savings (kwh) 48,923 Electric Cost Savings ($) $6,164 ECM #3 - ENERGY SAVINGS SUMMARY Installation Cost ($): $25,000 NJ Smart Start Equipment Incentive ($): $1,880 Net Installation Cost ($): $23,120 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $6,164 Total Yearly Savings ($/Yr): $6,164 Estimated ECM Lifetime (Yr): 10 Simple Payback 3.8 Simple Lifetime ROI 166.6% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $61,640 Internal Rate of Return (IRR) 23% Net Present Value (NPV) $29, March 3, 2014 FINAL Page 18 of 46

20 ECM #4: Lighting Controls Upgrade Occupancy Sensors Description: Some of the lights in the Memorial Middle School are left on unnecessarily. In many cases the lights are left on because of the inconvenience to manually switch lights off when a room is left or on when a room is first occupied. This is common in rooms that are occupied for only short periods and only a few times per day. In some instances lights are left on due to the misconception that it is better to keep the lights on rather than to continuously switch lights on and off. Although increased switching reduces lamp life, the energy savings outweigh the lamp replacement costs. The payback timeframe for when to turn the lights off is approximately two minutes. If the lights are expected to be off for at least a two minute interval, then it pays to shut them off. Lighting controls come in many forms. Sometimes an additional switch is adequate to provide reduced lighting levels when full light output is not needed. Occupancy sensors detect motion and will switch the lights on when the room is occupied. Occupancy sensors can either be mounted in place of a current wall switch, or on the ceiling to cover large areas. The U.S. Department of Energy sponsored a study to analyze energy savings achieved through various types of building system controls. The referenced savings is based on the Advanced Sensors and Controls for Building Applications: Market Assessment and Potential R&D Pathways, document posted for public use April The study has found that commercial buildings have the potential to achieve significant energy savings through the use of building controls. The average energy savings are as follows based on the report: Occupancy Sensors for Lighting Control 20% - 28% energy savings. Savings resulting from the implementation of this ECM for energy management controls are estimated to be 20% of the total light energy controlled by occupancy sensors. This ECM includes installation of ceiling or switch mount sensors for offices, classrooms, and restrooms. Sensors shall be manufactured by Sensorswitch, Watt Stopper or equivalent. The Investment Grade Lighting Audit Appendix of this report includes the summary of lighting controls implemented in this ECM and outlines the proposed controls, costs, savings, and payback periods. The calculations adjust the lighting power usage by the applicable percent savings for each area that includes lighting controls. Energy Savings Calculations: Energy Savings = Savings. = Energy Savings (% Savings Controlled Light Energy ( kwh/yr) ) $ kwh ( kwh) Ave ElecCost March 3, 2014 FINAL Page 19 of 46

21 Rebates and Incentives: From the NJ Smart Start Program Incentives Appendix, the installation of a lighting control device warrants the following incentive: Smart Start Incentive = (# Wall mount sensors $20 per sensor) + (# Ceiling mount sensors $35 per sensor) Energy Savings Summary: LIGHTING CONTROLS SAVINGS SUMMARY DESCRIPTION SAVINGS Electric Demand Savings (kw) 0.0 Electric Usage Savings (kwh) 35,658 Electric Cost Savings ($) $4,493 ECM #4 - ENERGY SAVINGS SUMMARY Installation Cost ($): $22,000 NJ Smart Start Equipment Incentive ($): $2,690 Net Installation Cost ($): $19,310 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $4,493 Total Yearly Savings ($/Yr): $4,493 Estimated ECM Lifetime (Yr): 10 Simple Payback 4.3 Simple Lifetime ROI 132.7% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $44,930 Internal Rate of Return (IRR) 19% Net Present Value (NPV) $19, March 3, 2014 FINAL Page 20 of 46

22 ECM #5: Kitchen Equipment Gas Conversion Description: The Middle School Kitchen is equipped with electric cooking equipment. Located in the kitchen are a steamer, a fryer, and two rack convection ovens. By converting over to Energy Star Rated natural gas fired cooking equipment significant energy and cost savings could be realized. This ECM would replace the existing equipment with new natural gas fired Energy Star rated kitchen equipment. Natural gas will be required to be extended into the kitchen area from the nearest line connection of adequate size. Energy Savings Calculations: Energy savings were calculated based on NJ BPU Protocols to Measure Resource Savings with adjustments made based on operating assumptions for a school kitchen. Fryer, Griddle, & Ovens Equation: Energy Usage = Days Year Energy Food Hours day Combination Oven & Range: Btu lb 1 + Idle Energy Rate Btu Efficiency hr Production Capacity 1 Fuel Conversion Energy Usage = Qty of Units Days Year (Op. Hrs Idle Hrs) Qty Burners Energy Rate Burner Use Rate % + Idle Hours Qty Pilots Idle Energy Rate + (Op. Hrs Idle Hrs) 1 Oven Qty Energy Rate Efficiency 1 Fuel Conversion March 3, 2014 FINAL Page 21 of 46

23 FRYER EQUIPMENT ANALYSIS ECM INPUTS EXISTING PROPOSED SAVINGS Quantity of Units 1 1 Operating Days per Year Operating Hours per Day 8 8 Average Production per Day (lbs) Production Capacity (lb/hr) Fuel Source Electric Gas Fuel Conversion Factor 3, ,000 Heavy Load Efficiency 75% 35% Idle Energy Rate (Btu/hr) 3, ,000.0 Electric Cost ($/kwh) $0.126 $0.126 Natural Gas Cost ($/therm) $1.010 $1.010 ENERGY SAVINGS CALCULATIONS Electric Usage (kwh) 6, ,020 Natural Gas Usage (therm) (440) Energy Cost ($) $758 $445 $314 COMMENTS: March 3, 2014 FINAL Page 22 of 46

24 STEAMER EQUIPMENT ANALYSIS ECM INPUTS EXISTING PROPOSED SAVINGS Quantity of Units 1 1 Operating Days per Year Operating Hours per Day 8 8 Average Production per Day (lbs) Production Capacity (lb/hr) Fuel Source Electric Gas Fuel Conversion Factor 3, ,000 Heavy Load Efficiency 26% 15% Idle Energy Rate (Btu/hr) 3, ,000.0 Electric Cost ($/kwh) $0.126 $0.126 Natural Gas Cost ($/therm) $1.010 $1.010 ENERGY SAVINGS CALCULATIONS Electric Usage (kwh) 2, ,136 Natural Gas Usage (therm) (127) Energy Cost ($) $269 $128 $141 COMMENTS: March 3, 2014 FINAL Page 23 of 46

25 OVEN EQUIPMENT ANALYSIS ECM INPUTS EXISTING PROPOSED SAVINGS Quantity of Units 2 2 Type of Oven Convection Convection Operating Days per Year Operating Hours per Day 8 8 Average Production per Day (lbs) Production Capacity (lb/hr) Fuel Source Electric Gas Fuel Conversion Factor 3, ,000 Heavy Load Efficiency 65% 30% Idle Energy Rate (Btu/hr) 6, ,800.0 Electric Cost ($/kwh) $0.126 $0.126 Natural Gas Cost ($/therm) $1.010 $1.010 ENERGY SAVINGS CALCULATIONS Electric Usage (kwh) 4, ,080 Natural Gas Usage (therm) (300) Energy Cost ($) $514 $303 $211 COMMENTS: March 3, 2014 FINAL Page 24 of 46

26 Energy Savings Summary: ECM #5 - ENERGY SAVINGS SUMMARY Installation Cost ($): $75,000 NJ Smart Start Equipment Incentive ($): $2,499 Net Installation Cost ($): $72,501 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $1,594 Total Yearly Savings ($/Yr): $1,594 Estimated ECM Lifetime (Yr): 15 Simple Payback 45.5 Simple Lifetime ROI -67.0% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $23,910 Internal Rate of Return (IRR) -11% Net Present Value (NPV) ($53,471.93) March 3, 2014 FINAL Page 25 of 46

27 ECM #6: Kitchen Domestic Gas Booster Heater Description: The kitchen uses a 36 kilowatt electric booster heater for the dishwasher. The booster heater is used to boost lower temperature domestic hot water up to 180 degrees Fahrenheit. The use of electric water heating can be much more costly and is more source energy intensive than using a natural gas heater. This ECM includes replacing the electric booster heaters with new Hatco PMG-100 natural gas fired booster heaters. This will require natural gas to be piped to the heater, and combustion venting to be installed. Energy Savings Calculations: Booster HW Heat (BTU) = Washer Gal Hr 8.33 Lbs Use Wk Temp Rise ( F) Hr Gal Wk Yr 1.0 BTU Lb F Elec Booster Energy = Gas Booster Energy = Booster HW Heat (BTU) Elec Heat Value BTU kwh Booster HW Heat (BTU) HWH Eff. (%) Gas Heat Value BTU Therm Elec Energy Cost = Energy Use, kwh Cost of Elec $ kwh $ Nat Gas Energy Cost = Energy Use, Therms Cost of Nat Gas Therm March 3, 2014 FINAL Page 26 of 46

28 GAS DISHWASHER BOOSTER CALCULATIONS ECM INPUTS EXISTING PROPOSED SAVINGS ECM INPUTS Elec Booster Heater Nat Gas Booster Estimated Dish Washer Use (Gal/Hr) Dish Washer Use (Hr/Week) Dish Washer Use (Week/Yr) Booster Temp Rise ( F) Dom. HWH Efficiency (%) 98% 82% -16% Booster HW Heat Required (kbtus) 31,225 31,225 Elec Cost ($/kwh) $0.126 $0.126 Gas Cost ($/Therm) $1.01 $1.01 ENERGY SAVINGS CALCULATIONS ECM RESULTS EXISTING PROPOSED SAVINGS Natural Gas Usage (Therms) Elec Booster Energy (kwh) 9, ,336 Total Energy Cost ($) $1,176 $385 $792 COMMENTS: This ECM is based on savings due to the fuel switching from electric to natural gas and includes affects from efficiency change. March 3, 2014 FINAL Page 27 of 46

29 Energy Savings Summary: ECM #6 - ENERGY SAVINGS SUMMARY Installation Cost ($): $14,500 NJ Smart Start Equipment Incentive ($): $3,500 Net Installation Cost ($): $11,000 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $792 Total Yearly Savings ($/Yr): $792 Estimated ECM Lifetime (Yr): 15 Simple Payback 13.9 Simple Lifetime ROI 8.0% Simple Lifetime Maintenance Savings 0 Simple Lifetime Savings $11,880 Internal Rate of Return (IRR) 1% Net Present Value (NPV) ($1,545.16) March 3, 2014 FINAL Page 28 of 46

30 ECM #7: Commercial Kitchen Exhaust Hood Controls Description: The existing kitchen hood operates for 10 hours per day regardless of whether or not cooking is being conducted underneath the hood. This type of operation continuously exhausts conditioned air from out of the kitchen, thereby forcing makeup air systems to continually condition the kitchen space. While this type of operation is standard procedure in most commercial kitchens, additional controls can be added to the hood exhaust system in order to reduce the airflow and power requirements of the system while full load operation is not required. This ECM would install Captiv Aire EMS system that allows for a reduction in air flow to 80%, while cooking is not being conducted. This system will modulate both the exhaust flow down based on the activity it senses under the hood. In addition the EMS system comes with a hood mounted control panel that allows for the chef to override the system for a period of time. Energy Savings Calculations: Savings were calculated based on the kitchen hood operating for 10 hours per day for 42 weeks per year. March 3, 2014 FINAL Page 29 of 46

31 VARIABLE SPEED KITCHEN HOOD CONTROLS ECM INPUTS EXISTING PROPOSED SAVINGS ECM INPUTS Constant EMS Controls Exhaust Fan, HP Exhaust Air, CFM 3,600 3,600 Full Load Operating Hours 2, Part Load Operating Hours Fan Power Usage, kwh 4,178 2,527 1,651 Heating Usage, kwh 50,544 36,392 14,152 Cooling Usage, kwh Elec Cost ($/kwh) ENERGY SAVINGS CALCULATIONS ECM RESULTS EXISTING PROPOSED SAVINGS Electric Energy (kwh) 54,722 38,918 15,803 Energy Cost ($) $6,895 $4,904 $1,991 COMMENTS: EMS System Reduces Airflow to 80% for low speed operation March 3, 2014 FINAL Page 30 of 46

32 Energy Savings Summary: ECM #7 - ENERGY SAVINGS SUMMARY Installation Cost ($): $17,000 NJ Smart Start Equipment Incentive ($): $500 Net Installation Cost ($): $16,500 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $1,991 Total Yearly Savings ($/Yr): $1,991 Estimated ECM Lifetime (Yr): 15 Simple Payback 8.3 Simple Lifetime ROI 81.0% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $29,865 Internal Rate of Return (IRR) 9% Net Present Value (NPV) $7, March 3, 2014 FINAL Page 31 of 46

33 ECM #8: Walk-In Controls Description: The Middle School has three walk-in coolers/freezers that store food for the kitchen. Each box has an evaporator with fans to circulate cold air, three in the refrigerators, and two in the freezer. These fans operate continuously whether the compressor is on or off resulting in unnecessary heat buildup in the box due to the fan motors. This measure would install an evaporator fan controller and EC Motors that features two-speed operation of the evaporator fans high speed during cooling, and low speed or off when not cooling manufactured by Frigitek or equivalent. Energy Savings Calculations: Energy savings calculations are based on New Jersey Board of Public Utilities Protocols to Measure Resource Savings. The energy savings are calculated using existing equipment characteristics. Amps Volts Phase 1 2 kwh Savings Evap Fans = % kwh Savings Evap Reduced Heat = kwh Savings Evap Fans kwh Savings Controls = Amps CP Volts CP Phase CP (35% 2,195 Hrs + 55% 6,565 Hrs) Amps EF Volts EF Phase EF % 5% 1000 CALCULATION CONSTANTS Evaporator Fan Motor Power Factor 0.55 ConversIon kw to ton (Refrigeration) 0.28 Efficiency of Typical System (kw/ton) 1.6 Compressor Power Factor 0.85 Compressor Winter Runtime 2195 Compressor Winter Duty Cycle 35% Compressor Non-Winter Runtime 6565 Compressor Non-Winter Duty Cycle 55% Reduced Runtime due to Controls 5% Percent Time Evaporator is Turned Off 35.52% March 3, 2014 FINAL Page 32 of 46

34 WALK-IN COOLER/FREEZER EVAPORATOR FAN CONTROL ECM INPUTS EXISTING PROPOSED SAVINGS ECM INPUTS No Controller Frigitek Controller Qty of Evaporator Fans 8 8 Nameplate Amps of Evap Fan Nameplate Volts of Evap Fan Phase of Evap Fan 1 1 Nameplate Amps of Compressor Nameplate Volts of Compressor Phase of Compressor 3 3 Elec Cost ($/kwh) $0.126 $0.126 ENERGY SAVINGS CALCULATIONS ECM RESULTS EXISTING PROPOSED SAVINGS Evaporator Fan Usage (KWH) 14,431 9,305 5,126 Evap Fan Heat Usage (KWH) Compressor Usage (KWH) 26,690 25,356 1,335 Total Electric Usage (KWH) 41,929 35,182 6,747 Electric Cost ($) $5,283 $4,433 $850 COMMENTS: Walk-In #1, 2, 3 March 3, 2014 FINAL Page 33 of 46

35 Energy Savings Summary: ECM #8 - ENERGY SAVINGS SUMMARY Installation Cost ($): $10,000 NJ Smart Start Equipment Incentive ($): $225 Net Installation Cost ($): $9,775 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $850 Total Yearly Savings ($/Yr): $850 Estimated ECM Lifetime (Yr): 10 Simple Payback 11.5 Simple Lifetime ROI -13.0% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $8,500 Internal Rate of Return (IRR) -2% Net Present Value (NPV) ($2,524.33) March 3, 2014 FINAL Page 34 of 46

36 ECM #9: Refrigerator Replacement Description: The Middle School has residential style refrigerators in the teacher lounge, science labs, and home economics. These units are older models that are not nearly as energy efficient as those manufactured today. The proposed replacement is a one-for-one with a unit of similar size and dimensions that has the most up-to-date Energy Star Rating. The model selected is a 2012 model manufactured by Frigidaire model FFGHT1846P. REFRIGERATOR REPLACEMENT LIST EXISTING Proposed Manufacturer Model Year Size (cu-ft.) Manufacturer Model Year Size (cu-ft.) GE TBX18JAXPRAA Frigidaire FGHT1846P GE TBXS19PLB Frigidaire FGHT1846P GE TBF18D Frigidaire FGHT1846P Energy Savings Calculations: ENERGY STAR REFRIGERATOR CALCULATION ECM INPUTS EXISTING PROPOSED SAVINGS Quantity 3 3 Manufacturer GE Frigidaire Type Top Freezer Top Freezer Model "Varies" FGHT1846P Size (Cu-Ft) Per Unit Electric Usage (kwh) 1, ,278 Electric Rate ($/kwh) $0.126 $0.126 ENERGY SAVINGS CALCULATIONS Electric Usage (kwh) 5,002 1,167 3,835 Energy Cost ($) $630 $147 $483 COMMENTS: Calculations based Energy Star Website March 3, 2014 FINAL Page 35 of 46

37 Energy Savings Summary: ECM #9 - ENERGY SAVINGS SUMMARY Installation Cost ($): $2,250 NJ Smart Start Equipment Incentive ($): $0 Net Installation Cost ($): $2,250 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $483 Total Yearly Savings ($/Yr): $483 Estimated ECM Lifetime (Yr): 15 Simple Payback 4.7 Simple Lifetime ROI 222.0% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $7,245 Internal Rate of Return (IRR) 20% Net Present Value (NPV) $3, March 3, 2014 FINAL Page 36 of 46

38 ECM #10: Water Conservation Description: The facility utilizes standard plumbing fixtures. The typical sink aerator consumption is 2.2 gallons per minute. New fixtures and aerators are available that use less water that can add up to significant water reduction over a long period. This ECM includes the replacement of the existing sink aerators with low flow sink aerators in the restrooms rated at 1.0 GPM. The existing quantity of sink estimated is based off observed quantity in the field. Energy Savings Calculations: Faucets: Days min Water Consumption = Occupancy Use Yr Day Water Consumption ( Gallons) Ave Cost Water Cost = 1000( Gal) FixtureQuantity $ 1000 Gal Fixture Gal Min Water Heating Usage (kwh) = Gallons 8.33 Btu year gal Water Heating Usage (therm) = Gallons 8.33 Btu year gal T (50 ) T (50 ) 1 Heater Eff (95%) kw 3412 Btu 1 Heater Eff (80%) therm 100,000 Btu March 3, 2014 FINAL Page 37 of 46

39 LOW FLOW WATER SAVING DEVICES ECM INPUTS EXISTING PROPOSED SAVINGS Quantity of Sinks Flow Rate (GPM) Device Usage (min per day) Facility Operation (days / year) Heat Content of Water (Btu/gal/ F) Temperature Rise ( F) Efficiency of Heating System (%) 90% 90% Conversion Factor for Electric Conversion Factor for Gas Natural Gas Rate ($/therm) $1.010 $1.010 Water Rate ($/1000gal) $5.000 $5.000 ENERGY SAVINGS CALCULATIONS Natural Gas Usage (Therm) Water Usage (gallons) 126,720 57,600 69,120 Energy Cost ($) $930 $423 $507 COMMENTS: Heating Savings based on 50% Hot Cold Mix March 3, 2014 FINAL Page 38 of 46

40 Energy Savings Summary: ECM #10 - ENERGY SAVINGS SUMMARY Installation Cost ($): $1,100 NJ Smart Start Equipment Incentive ($): $0 Net Installation Cost ($): $1,100 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $500 Total Yearly Savings ($/Yr): $500 Estimated ECM Lifetime (Yr): 5 Simple Payback 2.2 Simple Lifetime ROI 127.3% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $2,500 Internal Rate of Return (IRR) 36% Net Present Value (NPV) $1, March 3, 2014 FINAL Page 39 of 46

41 ECM #11: Digital Energy Management System (DDC EMS) Description: The Memorial School currently has two control systems that operate different sections of the building, one having local control access only, and the other being a web based system with outside access. By integrating these systems the District would be better able to control both sections of the buildings and operating as efficiently as possible through improved scheduling and set point control. This ECM includes integration of the older Detal Control System into the new ASI system. The system integration may require an update to the ASI front end in order to accommodate the additional points. Savings resulting from the implementation of this ECM for energy management controls are estimated to be 5% of the electricity and 5% for the gas utility in this building. Energy Savings Calculations: Energy savings for each utility is calculated with the equation below. Energy Savings (Utility) = Current Energy Consumption Estimated Savings, % Following table summarizes energy savings for this facility via implementation of an Energy Management System: It is estimated 40% of the building utilizes Delta Controls. March 3, 2014 FINAL Page 40 of 46

42 DDC ENERGY MANAGEMENT SYSYEM CALCULATIONS ECM INPUTS EXISTING PROPOSED SAVINGS ECM INPUTS Existing Controls w/ Local Thermostats DDC Controls Existing Nat Gas Usage (Therms) 16,848 - Existing Electricity Usage for HVAC (kwh) 549,968 - Energy Savings, Nat. Gas - 5% Energy Savings, Electricity - 5% Gas Cost ($/Therm) $1.01 $1.01 Electricity Cost ($/kwh) $0.126 $0.126 ENERGY SAVINGS CALCULATIONS ECM RESULTS EXISTING PROPOSED SAVINGS Natural Gas Usage (Therms) 16,848 16, Electricity Usage (kwh) 549, ,469 27,498 Energy Cost ($) $86,312 $81,997 $4,316 COMMENTS: March 3, 2014 FINAL Page 41 of 46

43 Energy Savings Summary: ECM #11 - ENERGY SAVINGS SUMMARY Installation Cost ($): $150,000 NJ Smart Start Equipment Incentive ($): $0 Net Installation Cost ($): $150,000 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $4,000 Total Yearly Savings ($/Yr): $4,000 Estimated ECM Lifetime (Yr): 15 Simple Payback 37.5 Simple Lifetime ROI -60.0% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $60,000 Internal Rate of Return (IRR) -10% Net Present Value (NPV) ($102,248.26) March 3, 2014 FINAL Page 42 of 46

44 ECM #12: Window Replacement Description: The older section of the facility s envelope consists of single pane windows with aluminum frames. The total area of single pane windows is estimated at 2,800 SF. This area was used as the basis for calculated energy savings and formulating a cost estimate. Older inefficient windows can account for significant energy use through leakage heat loss and conductive heat loss. The age and condition of the windows contribute to the leakage rate of the building. The single pane construction allows higher thermal (conductive) energy loss. These factors lead to increased energy use in the heating season. The heating loss due to single pane glass is combined with heat loss due to poor seals at each operable window. New double pane windows with low E glazing offer a substantial improvement in thermal performance throughout the year. This ECM includes the replacement of all single pane glass in the facility with double pane windows with low emissivity glass. The proposed windows include reduced outside air leakage. In addition the double pane structure will significantly increase the insulation value compared to the existing single pane window structure. The basis for this ECM is an ASHRAE equivalent window. The windows will be replaced throughout the older classroom section. Energy Savings Calculations: Thermal Loss values were calculated for each month based on the average monthly temperature obtained for The cooling period used was May to September, and heating period used was October to April. Thermal Loss Savings (kbtu) = (U E U P ) Window Area T Indoor T Avg Outdoor Hours Month 1 kbtu 1,000 Btu 1 Heating Savings (Therm) = Thermal Loss Savings (Heating) Efficiency 1 Therm 100 kbtu Cooling Savings (kwh) = Thermal Loss Savings (Cooling) 1 EER March 3, 2014 FINAL Page 43 of 46

45 WINDOW REPLACEMENT CALCULATIONS ECM INPUTS EXISTING PROPOSED SAVINGS Existing Single Pane Double Pane Low-E Description: Windows Windows Window (SF) 2,800 2,800 U-Value (BTU/HR/SF* F) Infiltration Rate (CFM/SF) Indoor Temperature Cooling ( o F) Indoor Temperature Heating ( o F) Average Thermal Loss Rate Heating (BTU/HR) Average Thermal Loss Rate Cooling (BTU/HR) 74,400 33,480 40,920 5,040 2,268 2,772 Heating Degree Days (65 o F) Cooling Degree Days (65 o F) Thermal Losses Heating (kbtu) 382, , ,413 Thermal Losses Cooling (kbtu) 18,211 8,195 10,016 Heating System Efficiency (%) 90.0% 90.0% Cooling System Efficiency (EER) Natural Gas Cost ($/Therm) $1.01 $ Electric Cost ($/kwh) $0.126 $ ENERGY SAVINGS CALCULATIONS ECM RESULTS EXISTING PROPOSED SAVINGS Electric Usage (kwh) 1, ,002 Natural Gas Usage (Therm) 4,251 1,913 2,338 Energy Cost Savings ($) $4,523 $2,035 $2,488 Comments: 1. Proposed window U-value Based on ASHRAE Savings Based on Avg. Monthly Temperature for 2012 March 3, 2014 FINAL Page 44 of 46

46 Energy Savings Summary: ECM #12 - ENERGY SAVINGS SUMMARY Installation Cost ($): $130,000 NJ Smart Start Equipment Incentive ($): $0 Net Installation Cost ($): $130,000 Maintenance Savings ($/Yr): $0 Energy Savings ($/Yr): $2,488 Total Yearly Savings ($/Yr): $2,488 Estimated ECM Lifetime (Yr): 30 Simple Payback 52.3 Simple Lifetime ROI -42.6% Simple Lifetime Maintenance Savings $0 Simple Lifetime Savings $74,640 Internal Rate of Return (IRR) -3% Net Present Value (NPV) ($81,234.10) March 3, 2014 FINAL Page 45 of 46

47 V. ADDITIONAL RECOMMENDATIONS The following recommendations include no cost/low cost measures, Operation & Maintenance (O&M) items, and water conservation measures with attractive paybacks. These measures are not eligible for the Smart Start Buildings incentives from the office of Clean Energy but save energy none the less. A. Chemically clean the condenser and evaporator coils periodically to optimize efficiency. Poorly maintained heat transfer surfaces can reduce efficiency 5-10%. B. Maintain all weather stripping on windows and doors. C. Clean all light fixtures to maximize light output. D. Provide more frequent air filter changes to decrease overall system power usage and maintain better IAQ. E. Turn off computers when not in use. Ensure computers are not running in screen saver mode. F. Replace any old CRT Monitors with LED/LCD Type Monitors, which can draw as much as a quarter the power of an equivalent CRT monitor. G. Ensure outside air dampers are functioning properly and only open during occupied mode. March 3, 2014 FINAL Page 46 of 46

48 Appendix APPENDIX A

49 APPENDIX A 1 of 1 ECM ENERGY AND FINANCIAL COSTS AND SAVINGS SUMMARY ECM NO. DESCRIPTION MATERIAL INSTALLATION COST LABOR REBATES, INCENTIVES NET INSTALLATION COST ECM COST & SAVINGS BREAKDOWN CONCORD ENGINEERING GROUP Medford Township School District - Memorial Middle School YEARLY SAVINGS LIFETIME ENERGY SAVINGS ENERGY MAINT. / SREC TOTAL (Yearly Saving * ECM Lifetime) LIFETIME MAINTENANCE SAVINGS (Yearly Maint Svaing * ECM Lifetime) LIFETIME ROI (Lifetime Savings - Net Cost) / (Net Cost) SIMPLE PAYBACK (Net cost / Yearly Savings) INTERNAL RATE OF RETURN (IRR) ($) ($) ($) ($) ($/Yr) ($/Yr) ($/Yr) (Yr) ($) ($) (%) (Yr) ($) ($) NET PRESENT VALUE (NPV) ECM #1 Lighting Upgrade - General $260,000 $72,000 $5,720 $326,280 $19,756 $0 $19, $197,560 $0-39.5% % ($157,757.31) ECM #2 Lighting Upgrade - Gymnasium $5,000 $4,000 $1,200 $7,800 $1,022 $0 $1, $10,221 $0 31.0% % $ ECM #3 Lighting Upgrade - Exterior $15,000 $10,000 $1,880 $23,120 $6,164 $0 $6, $61,640 $ % % $29, ECM #4 Lighting Controls $16,000 $6,000 $2,690 $19,310 $4,493 $0 $4, $44,930 $ % % $19, ECM #5 Electric to Gas Kitchen Equipment $60,000 $15,000 $2,499 $72,501 $1,594 $0 $1, $23,910 $0-67.0% % ($53,471.93) ECM #6 Gas Fired Booster Heater $7,500 $7,000 $3,500 $11,000 $792 $0 $ $11,880 $0 8.0% % ($1,545.16) ECM #7 Kitchen Hood Controls $10,000 $7,000 $500 $16,500 $1,991 $0 $1, $29,865 $0 81.0% % $7, ECM #8 Walk-In Controls $6,500 $3,500 $225 $9,775 $850 $0 $ $8,500 $0-13.0% % ($2,524.33) ECM #9 Refrigerator Replacement $2,250 $0 $0 $2,250 $483 $0 $ $7,245 $ % % $3, ECM #10 Water Conservation $700 $400 $0 $1,100 $500 $0 $500 5 $2,500 $ % % $1, ECM #11 DDC Controls Upgrade $90,000 $60,000 $0 $150,000 $4,000 $0 $4, $60,000 $0-60.0% % ($102,248.26) ECM #12 Window Upgrade $75,000 $55,000 $0 $130,000 $2,488 $0 $2, $74,640 $0-42.6% % ($81,234.10) ECM LIFETIME Notes: 1) The variable Cn in the formulas for Internal Rate of Return and Net Present Value stands for the cash flow during each period. 2) The variable DR in the NPV equation stands for Discount Rate 3) For NPV and IRR calculations: From n=0 to N periods where N is the lifetime of ECM and Cn is the cash flow during each period.

50 Appendix APPENDIX B

51 Appendix B Page 1 of BURNT MILL ROAD VOORHEES, NEW JERSEY PHONE: (856) FAX: (856) SmartStart Building Incentives The NJ SmartStart Buildings Program offers financial incentives on a wide variety of building system equipment. The incentives were developed to help offset the initial cost of energy-efficient equipment. The following tables show the current available incentives as of February 11, 2013: Electric Chillers Water-Cooled Chillers $16 - $170 per ton Air-Cooled Chillers $8 - $52 per ton Energy Efficiency must comply with ASHRAE Gas Cooling Gas Absorption Chillers $185 - $400 per ton Gas Engine-Driven Chillers Calculated through custom measure path) Desiccant Systems $1.00 per cfm gas or electric Electric Unitary HVAC Unitary AC and Split Systems $73 - $92 per ton Air-to-Air Heat Pumps $73 - $92 per ton Water-Source Heat Pumps $81 per ton Packaged Terminal AC & HP $65 per ton Central DX AC Systems $40- $72 per ton Dual Enthalpy Economizer Controls $250 Occupancy Controlled Thermostat (Hospitality & Institutional Facility) $75 per thermostat A/C Economizing Controls < 5 tons $85/unit; >5 tons $170/unit Energy Efficiency must comply with ASHRAE Gas Heating Gas Fired Boilers < 300 MBH $2.00 per MBH, but not less than $300 per unit Gas Fired Boilers MBH $1.75 per MBH Gas Fired Boilers MBH $1.00 per MBH Gas Fired Boilers > 4000 MBH (Calculated through Custom Measure Path) Gas Furnaces $400 per unit, AFUE 95% Boiler Economizing Controls $1,200 - $2,700 Low Intensity Infrared Heating $300 - $500 per unit

52 Appendix B Page 2 of 4 Ground Source Heat Pumps $450 per ton, EER 16 Closed Loop $600 per ton, EER 18 $750 per ton, EER 20 Energy Efficiency must comply with ASHRAE Variable Frequency Drives Variable Air Volume $65 - $155 per hp Chilled-Water Pumps $60 per VFD rated hp Compressors $5,250 to $12,500 per drive Cooling Towers 10 hp $60 per VFD rated hp Boiler Fans > 5 HP $65 to $155 per hp Boiler Feed Water Pumps > 5 HP $60 to $155 per hp Commercial Kitchen Hood up to 50 HP Retrofit $55 $300 per hp New Hood $55 - $250 per hp Natural Gas Water Heating Gas Water Heaters 50 gallons, 0.67 energy factor or better $50 per unit Gas-Fired Water Heaters > 50 gallons $ $2.00 per MBH Gas-Fired Booster Water Heaters Gas Fired Tankless Water Heaters $17 - $35 per MBH $300 per unit Prescriptive Lighting Retro fit of T12 to T-5 or T-8 Lamps $10 per fixture w/electronic Ballast in Existing (1-4 lamps) Facilities (Expires 3/1/2013) Replacement of T12 with new T-5 or T-8 Lamps w/electronic Ballast in $25 per fixture (1-4 lamps) Existing Facilities (Expires 3/1/2013) T-8 reduced Wattage (28w/25w 4, 1-4 lamps) Lamp & ballast replacement For retrofit of T-8 fixtures by permanent de-lamping & new reflectors (Electronic ballast replacement required) $10 per fixture $15 per fixture T-5 and T-8 High Bay Fixtures $16 - $200 per fixture Metal Halide w/pulse Start Including Parking Lot HID 100w Retrofit with induction lamp, power coupler and generator (must be 30% less watts/fixture than HID system) $25 per fixture $50 per fixture HID 100w Replacement with new HID 100w $70 per fixture

53 Appendix B Page 3 of 4 Prescriptive Lighting - LED LED Display Case Lighting $30 per display case LED Shelf-Mtd. Display & Task Lights $15 per linear foot LED Portable Desk Lamp $20 per fixture LED Wall-wash Lights LED Recessed Down Lights LED Outdoor Pole/Arm-Mounted Area and Roadway Luminaries LED Outdoor Pole/Arm-Mounted Decorative Luminaries $30 per fixture $35 per fixture $175 per fixture $175 per fixture LED Outdoor Wall-Mounted Area Luminaries $100 per fixture LED Parking Garage Luminaries LED Track or Mono-Point Directional Lighting Fixtures LED High-Bay and Low-Bay Fixtures for Commercial & Industrial Bldgs. LED High-Bay-Aisle Lighting $100 per fixture $50 per fixture $150 per fixture $150 per fixture LED Bollard Fixtures LED Linear Panels (1x4, 2x2, 2x4 Troffers only) LED Fuel Pump Canopy LED Screw-based & Pin-based (PAR, MR, BR, R) Standards (A-Style) and Decorative Lamps LED Refrigerator/Freezer case lighting replacement of fluorescent in medium and low temperature display case LED Retrofit Kits $50 per fixture $100 per fixture $100 per fixture $20 per lamp $30 per 4 foot $42 per 5 foot $65 per 6 foot To be evaluated through the customer measure path

54 Appendix B Page 4 of 4 Lighting Controls Occupancy Sensors Wall Mounted $20 per control Remote Mounted $35 per control Daylight Dimmers $25-$50 per fixture Occupancy Controlled hi-low Fluorescent Controls $25 per fixture controlled Lighting Controls HID or Fluorescent Hi-Bay Controls Occupancy hi-low $75 per fixture controlled Daylight Dimming $75 per fixture controlled Premium Motors Three-Phase Motors (Expires 3/1/2013) $45 - $700 per motor Fractional HP Motors Electronic Commutated Motors (replacing shaded pole motors in refrigerator/freezer cases) $40 per electronic commutated motor Refrigeration Doors/Covers Energy-Efficient Doors/Covers for $100 per door Installation on Open Refrigerated Cases Aluminum Night Curtains for Installation on Open Refrigerated Cases $3.50 per linear foot Refrigeration Controls Door Heater Controls $50 per control Electric Defrost Controls $50 per control Evaporator Fan Controls $75 per control Novelty Cooler Shutoff $50 per control Performance Lighting Custom Electric and Gas Equipment Incentives Custom Measures Other Equipment Incentives $1.00 per watt per SF below program incentive threshold, currently 5% more energy efficient than ASHRAE for New Construction and Complete Renovation not prescriptive $0.16 KWh and $1.60/Therm of 1st year savings, or a buy down to a 1 year payback on estimated savings. Minimum required savings of 75,000 KWh or 1,500 Therms and an IRR of at least 10%.

55 Appendix APPENDIX C

56 ENERGY STAR Statement of Energy Performance 57 ENERGY STAR Score 1 Medford Memorial Middle School Primary Property Function: K-12 School Gross Floor Area (ft²): 118,750 Built: 1968 For Year Ending: December 31, 2012 Date Generated: December 19, The ENERGY STAR score is a assessment of a building s energy efficiency as compared with similar buildings nationwide, adjusting for climate and business activity. Property & Contact Information Property Address Medford Memorial Middle School 55 Mill Street Medford, New Jersey Property ID: Property Owner Medford Township Public School District 137 Hartford Road Medford, NJ ( ) - Primary Contact Joe Biluck 137 Hartford Road Medford, NJ jbiluck@medford.k12.nj.us Energy Consumption and Energy Use Intensity (EUI) Site EUI 55.4 kbtu/ft² Source EUI kbtu/ft² Annual Energy by Fuel Natural Gas (kbtu) 2,370,919 (36%) Electric - Grid (kbtu) 4,203,727 (64%) National Median Comparison National Median Site EUI (kbtu/ft²) 59.2 National Median Source EUI (kbtu/ft²) % Diff from National Median Source EUI -7% Annual Emissions Greenhouse Gas Emissions (MtCO2e/year) 658 Signature & Stamp of Verifying Professional I (Name) verify that the above information is true and correct to the best of my knowledge. Signature: Date: Licensed Professional Michael Fischette 520 South Burnt Mill Road Voorhees, NJ mfischette@concord-engineering.com Professional Engineer Stamp (if applicable)