Army Exceeds Energy Goal Ahead of Mandate (Actual Energy Reduction of 38% vs 30% and Achieved in 2010 vs 2015)

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1 Army Exceeds Energy Goal Ahead of Mandate (Actual Energy Reduction of 38% vs 30% and Achieved in 2010 vs 2015) NDIA E 2 S 2 May 9-12, 2011 New Orleans, LA

2 Overview Background Energy Conservation Measures (ECMs) Implemented Project Financials Performance Period Project Benefits 2

3 Mission Adelphi Laboratory Center (ALC) Manage and operate the facilities of ALC in an equitable, effective manner to support on-going research, enable the well-being of Soldiers and civilians, improve infrastructure, and preserve the environment. ALC Campus Includes 1.1 million square feet of gross floor area in 36 buildings over 207 acres Facilities: research/laboratory facilities, storage, utility plants, maintenance yards, fabrication shops, administrative complexes including occupational health clinic, wellness center, and cafeteria 3

4 Adelphi Laboratory Center (ALC) Project Goals Reduce energy use and operating cost to meet and exceed Energy Laws and Executive Orders Improve the Garrison s energy infrastructure Enhance energy security for critical operations 4

5 AMERESCO Leading Provider of energy efficiency solutions with over $5.0 billion in energy savings & renewable power products. One-Stop, Comprehensive Service Provider. Independent company with no affiliation to any equipment manufacturer, utility or fuel company. Strong National and Local Presence with 54 offices located in United States (29 states), Canada (4 provinces), and Europe (Italy, Spain) with over 600 employees. (over 170 registered professional engineers, PEs and certified energy managers, CEMs) Executive Officers have an aggregate of over 150 years of experience in the energy efficiency field. Note: Ameresco has currently under construction the industry s largest ESPC / Renewable project. It is a $798 million biomass project for Dept. of Energy s Savannah River facility, in South Carolina. 5

6 Definition of Energy Savings Performance Contracting (ESPC) ESPC is a no-upfront-cost contracting method. The contractor incurs the cost of implementing energy conservation measures (ECMs) and is paid from the energy, water, and operations savings resulting from these ECMs. U.S. ARMY CORPS Huntsville, ESPC team provides Contracting and customer support for project. 6

7 ECM PROJECT DEVELOPMENT ALC challenged Ameresco to develop expansive project using combination of traditional and cutting-edge technologies, all within financial constraints of project ECM Content Bleeding Edge Technologies Cutting Edge Technologies Traditional Technologies 7

8 ECM Project Development (continued) Partnership (Army & Ameresco) identified over 45 ECMs Phase I, Site Survey analyzed 37 ECMs 30 ECMs approved for Phase II Feasibility Study Ameresco proposed 14 ECMs from 30 ECMs analyzed 12 ECMs were approved by Army for implementation Note: Includes full O&M for project s major equipment 8

9 Energy Conservation Measures (ECM) Implemented 9

10 High Efficiency Lighting with Controls LED outdoors for parking lots, roadways, building wall packs, display cases, and elevators Occupancy controls interlocked to HVAC controls with VAV set-back Scotopic T-5 high-bay lighting T-8, 32 watt to extended-life super T-8, 25 watt T8 Lamps and Electronic Ballasts 10

11 High Performance Fume Hoods Retrofit Retro-fit 50 fume hoods with bi-stable vortex containment technology for compliance with ASHRAE 110 containment test. Significant HVAC saving achieved through reduced exhaust and associated conditioned air. 11

12 DDC Controls, Rebalance, Recommission, and Improve Delta T Site-wide conversion from legacy system to open protocol DDC system Open protocol system creating options for future expansion and O&M Total point 5844 (4,177 new and 1,667 re-programmed) Chiller plant optimization Reduce simultaneous heating and cooling Sequence optimization for AHUs, VAVs, heat exchangers and humidifiers New 2-way pressure-independent control valves on hot and chilled water Equipment scheduling Outside air set-back based on occupancy New control hardware (control panels, VAV boxes, sensors and wiring, etc) Air-side rebalance for AHU and VAV supply and return air 12

13 Upgrade Existing Boiler Controls, O2 Trim and Repairs Replace control system on 3 boilers to improve combustion efficiency. Replace existing burners on 3 boilers with high-efficiency burner. High efficient, variable speed, fully modulating burners Oxygen-trim control for maximum efficiency Install new boiler refractory, baffles and insulation. 13

14 Optimize Compressed Air System Remove existing abandoned Cube compressor. Install new high-efficiency compressor with new dryer and new zero loss condensate drains. New compressor is lead compressor in parallel with three (3) existing back-up compressors for mission critical operations. 14

15 New Combined Heat and Power Plant (CHP) Two new 1.1 MW natural gas-fired reciprocating engine generators Two new heat exchangers and recovery boilers to recover waste heat for HTHW loop Two (2), new lean-burn, 1.1 MW natural gas engines for site heating and power generation High efficiency with both exhaust and jacket heat recovery equipment Black start capability for critical loads during utility outages MDE permit; Noise analysis and mitigation Stand alone controls for heat recovery optimization with interface to DDC HTHW temperature drop from 400 to 250 degrees Fahrenheit Include selective catalytic reduction (SCR) on engines to control emissions. 15

16 Optimize Central Chilled Water Plant 1,000-ton Variable Speed Screw Chiller with plate and frame heat exchanger for water side economizer, and 6,000 ton central chiller plant optimization. The new 1,000 ton chiller utilizes Carrier s latest triple-screw technology with industrybest efficiency in this size. Install VFDs on primary pumps of the 2 most frequently used chillers. 16

17 Water-Side Economizer Cooling Install new heat exchanger to use free cold condenser water during winter instead of running a chiller. New heat exchanger is connected to new high efficiency 1,000 ton triple screw chiller. 17

18 Optimize Chilled Water Plant Retrofit one chiller with state of the art high efficiency TurboCor compressor. (Note: Instead of retrofit, a new 100-ton Variable Speed Turbocor frictionless bearing chiller was installed with industry-best efficiency in this size. Condenser water reset using cooler condenser water when available increases chiller efficiency. Re-enable air-side economizer on AHUs. 18

19 Re-Insulate High Temperature Hot Water Distribution Piping Provide insulation jackets on valves and fittings on the HTHW piping system. Insulating blankets and traditional insulation. Provide fiberglass insulation for damaged insulated areas in the HTHW piping system. 19

20 New High Efficiency Transformers Strategy 1 - Replace 19 Dry transformers in multiple buildings Replace 91% efficient with 98% efficient Strategy 2 Re-feed double-ended 208V substations Load aggregation for lightly loaded transformers Note: Increase efficiency equates to operating savings and less heat dissipated. Older units were hot to the touch; new units are not. 20

21 HVAC Air Handler / Clean Room, Upgrades Existing Air-Handlers Upgrades: Install new wrap-around heat pipe coils around existing cooling coil in 9 AHUs Piping filled with refrigerant transfers heat between inlet and outlet side of the cooling coil Provides free pre-cooling and free reheat by heat transfer through the heat pipe coils 13 customized efficiency upgrades to existing air handlers (air splitters) Clean Room Modifications (related to CHP ECM): Use of high-temperature hot water (HTHW) to reactivate desiccant de-humidification wheel in lieu of electric heat; addition of electric coil to replace removed HTHW coil due to lower loop temperature Cool fog humidification for clean room (Mee-Fog) 21

22 PROJECT FINANCIALS First Year Energy Savings Contract Term Energy Savings $ 2,859,942 $ 43,526,533 Implementation Cost $21,175,516 Contract Term 13 Years 22

23 PERFORMANCE PERIOD Includes full O&M for project s major equipment Cogeneration equipment Natural gas engines Heat recovery equipment Electrical switchgear Carrier 1000 ton triple screw chiller Plate and frame heat exchanger Turbocor chiller Preventive maintenance only on new boiler burners Annual Measurement and & Verification Reports for term of contract 23

24 Energy Goal Exceeded Now (Energy Consumption Actual vs Goal) Adelphi Laboratory Center Consumption (MBTU/KSF) Fiscal Year Actual Consumption 2015 Goal (3% / Yr) /6/2011

25 Annual M&V Report Sample Summary Chart 25

26 Benefits of ESPC Project for: U.S. Army Garrison, Adelphi Laboratory Center 35% Mbtu /Ksf energy reduction expected (FY 2009 at 38%) Compliance with Federal energy laws & Army energy policies Enhanced energy security for critical loads through use of CHP plant during power outages Modernize energy infrastructure now with minimal capital outlay Improved occupant comfort through upgraded DDC system Enhanced operation/maintenance for major energy equipment Escrow fund of 100,000 per year for contract term for upgrades Significant operating cost savings and environment benefits resulting from large reductions in energy usage 26

27 27 Thank You