Energy Efficiency Programs Leading Edge Programs and Technologies

1. Energy Efficiency ProgramsLeading Edge Programs and Technologies Bob Lake President Charles Fletcher Executive Vice President

2. Meeting Agenda • EMCOR/Mesa Energy Systems Introduction • SCE and CPUC • SCIenergy MESA • Emerging Technologies • Closing Remarks-Questions

3. EMCOR Group EMCOR Group, Inc. is a Fortune 400® company with 2012 revenues of $6.2 billion, EMCOR Group (NYSE: EME) is a global leader in mechanical and electrical construction, energy infrastructure and facilities services. EMCOR represents a rare combination of international reach with local execution, combining the strength of an industry leader with over 26,000 highly skilled employees and 170+ locations and 70 subsidiaries.

4. Mesa Energy Systems Engineering Design Construction Controls Maintenance • Maintenance • 9 Offices in California • 400 Field Technicians • HVAC Maintenance • Building Controls • Refrigeration • Chiller and Central Plant • $18M Maintenance base with > 2,500 customers • Central Plant Optimization • Building Performance Testing • VFD installation and Repair • HVAC Services and • Energy Solutions • Mechanical Maintenance • Service and Repair • Building Automation • Chiller Service & Installation • Design / Build Capabilities • Tenant Improvements • Energy Efficiency Studies • Demand Response • Retro commissioning • Energy Generation • Photovoltaic installation and maintenance • Micro Turbines • Reciprocating Engines • Fuel Cell • CHP Contractor licenses (Bond capacity >100M) B, C20, C10, C36, C38, and C21

5. Energy Awareness • Global demand for all energy sources forecast to grow 57% over next 25 years • U.S. demand for all types of energy expected to increase 31% within 25 years • By 2030, Asia will use 56% of the world’s energy • U.S. electricity demand will grow by at least 40% by 2032. • New power generation equal to nearly 300 power plants (1,000MW) will be needed to meet electricity demand by 2030. • Currently, 50% of U.S. electrical generation relies on coal (fossil fuel) while 85% of U.S. greenhouse gas emissions result from energy-consuming activities supported by fossil fuels. Sources: Annual Energy Outlook (DOE/EIA-0383(2007)), International Energy Outlook 2007 (DOE/EIA-0484(2007), Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2005 (April 2007) (EPA 430-R-07-002)

6. California Energy Efficiency Strategic Plan (2008) “The goal is for California’s energy to be adequate, affordable, technologically advanced, and environmentally-sound…Cost effective energy efficiency is the resource of first choice for meeting California’s energy needs. Energy efficiency is the least cost, most reliable, and most environmentally sensitive resource, and minimizes our contribution to climate change.”

7. SCE and CPUC (Coming soon to all IOUs)

8. SCE Mission Comprehensive HVACA vision for an integrated HVAC portfolio driving market transformation SCE Comprehensive HVAC exists to: • support the HVAC goals of the CPUC • provide a catalyst for continuous improvement • demonstrate fiduciary responsibility to SCE customers • Starting with packaged AC equipment

9. Background • Among Southern California businesses, HVAC is typically the largest consumer of energy, the single largest contributor to peak demand and the highest operating expense. • An optimized HVAC system reduces energy consumption, saves money, and prevents costly system breakdown. • Improved HVAC operation is a leading opportunity for improved energy efficiency, reduced peak power demand, and cost savings. • CPUC directed implementation new HVAC program amongst IOU’s to support California’s contractors

10. SCE Trial Overview • Upgrade existing and “to code” Units when premium HVAC equipment cannot be installed • Installation of Enhanced Ventilation Measure first opportunity • Installation of Evaporcool Technology second opportunity • Combined Installation of both Technologies third opportunity • Both technologies provide ADR potential • Replacement incentives: $200-$500 per ton • Additional Incentives for enhanced technologies

11. SCIenergy MESA

12. SCIenergy MESA MESA benefits relative to the three alternatives. • No debt: the services agreement is an operating expense under current and forthcoming accounting rules. • Potential for endowment to invest and earn its targeted returns. • No savings guarantee enforcement concerns. • Development flexibility: utilize in-house resources, leverage previous investments; vendor neutral, consultant neutral.

13. SCIenergy MESA Managed Energy Services Agreement 1 2

14. Central Plant Optimization

15. Ultra-Efficient All Variable Speed Central Plant • Variable frequency drives on all central plant equipment • Convert plant to primary-only or primary-booster • Power based control of chillers, pumps and cooling tower fans • Valve position method of control for chilled water pumps • Power based re-set strategy for chilled water supply temperature • Optimal sequencing of chillers and towers • Optimal control of chiller VFD • Continuous measurement and verification • Just because you have VFDs does not mean you save

16. Chiller Plant Energy Use Spectrum

17. Sample Dashboard

18. Magnetic Bearing Compressors and Chillers

19. Turbocor Compressors • Completely Oil-Free Compressor that utilizes magnetic bearings • DC Synchronous permanent magnet motor, (same type of motor used in cordless drills, light weight, variable speed with lots of torque) • Direct Drive, there is no transmission • Built In Variable Speed Drive with On board Soft Start • Full digital control system with onboard diagnostics • Most Energy Efficient Compressor to date • Quiet only 70 dba from a distance of 9 feet

20. Retrofit Applications • What are some good applications? • Reciprocating chillers • Screw Chiller Retrofits • Constant Speed Centrifugals with gear boxes • DX Built Up systems • Rack Chillers • Pony Chillers • What are some benefits to retrofitting? • Significant Energy Cost Savings • Very inexpensive to maintain • Extremely quiet operation • Equipment is more reliable and provides a payback

21. Success Story: County of Ventura ECCH Central Plant Replacement • Existing plant Ice Harvester • Operated at 1.2 kW/ton

22. Success Story: County of Ventura New Plant Operational October 2011 • Installed 350 Ton Turbocor Chiller • New DDC Controls with variable flow system • Operates at .5 kW/ton

23. Data Center Success with Turbocor

24. Lab Optimization

25. Tek-Air • Low Pressure Drop • Electric Actuation • Fast Speed of Response • No Straight Run Requirements • True Flow Feedback • High Accuracy • Quiet Performance • No Scheduled Maintenance • Universal voltage and current input/output

26. Tek-Air

27. Wireless Pneumatic Thermostats (WPT)

28. Wireless Pneumatic Thermostats • Standard Pneumatic Thermostat are inherently inaccurate • They require frequent calibration • They cannot be monitored remotely • They waste energy Pneumatic Thermostats Manual Instrumentation, Not Programmable, No Diagnostics… Equals: Wasted Energy, Higher Downtime, More Labor Required

29. Wireless Pneumatic Thermostats CYPRESS ENVIROSYSTEMS WIRELESS PNEUMATIC THERMOSTAT EXISTING LEGACY STAT DDC in 20 Minutes! • Manual Setpoint Control • No Remote Readings • No Diagnostics • Manual Calibration Required • Cannot support Demand Response strategies • Remote Wireless Setpoint Control • Remote Monitoring of Temperature & Pressure • Pager/Cell Notification of Excursions • Automatic Self-calibration • Programmable Temperature Setbacks • Occupancy Override • Enables Demand Response strategies • BACnet Interface to BMS • Compatible With Existing Johnson, Honeywell, Siemens, Robertshaw • Up to 2yr battery life Get the benefits of Direct Digital Control (DDC) in less than 20 minutes

30. Demand Control Ventilation

31. CO2 Sensor System for Demand Controlled Ventilation • Eliminates high cost of excessive outside air for ventilation • Outside air pre-set for max occupancy • When lower than max, up to 500% over-ventilation occurs, wasting energy to heat/cool outside air • Sensors detect CO2 exhaled and adjust outside air intake to match real-time needs

32. CO Garage Sensors

33. Parking Garage CO Sensor System with VFD’s • Reduces 80% to 90% of the energy cost to operate exhaust fans in enclosed parking garages • Operates fans at low base ventilation level and ramps up volume as required if CO detected • Only responds to CO, not other gases • Electrochemical sensors very accurate

34. Window Film

35. Window Film • Blocks up to 80% of solar heat • New films are clear • Often lowers temperate 10° • Greatly reduces HVAC demand • Blocks over 90% of UV rays • 100 sq. ft of single pane glass equals 1-ton of A/C load

36. Fan Wall

37. Fan Wall System • Reduces energy costs up to 50% compared to large centrifugal and vane-axial fans • Replaces old, inefficient, noisy, vibrating, low-reliability fans w/ high-efficiency bank of fan modules w/ VFDs built into a fan wall • Maximum Redundancy, reliable, easy to maintain

38. Success Story: 1500 Quail Before After

39. Catalyst: Enhanced Ventilation for Packaged Units

40. Catalyst • Proven energy saving upgrade for Packaged A/C’s • 25-40% overall energy savings • Maintains comfort & assures indoor air quality • Automatic air flow adjustments to protect equipment. • Demand-Response Capability • Integrates with many existing Building Automation Systems

41. Catalyst Companion web-based tool with live views, diagnostics, fault-detection, real time performance & historic savings tracking, and full function building automation capability.

42. Catalyst- Energy Saving Strategies Integrated Economizer with Differential Changeover Control Variable Speed Fan Control to Match the Needs of the Space Served Elimination of Over-Ventilation via Demand Control Ventilation (DCV) Remediation of Service and Operational Issues

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44. EvaporCool

45. EvaporCool Hot outside air is cooled as it passes through the EZ-Frame, before it reaches the condenser coils. This allows the system to operate as though it were cooler outside than it actually is. On recent 100 degree days (73 wet bulb), in a humid Southeastern U.S. climate, the leaving air temperature of the EvaporCool system entering the condenser is 79.2 degrees! 79.2°F 100° F

46. EvaporCool SmartSpray Performance • Cloud-Based Monitoring & Control • Sensor Data Logging and Analysis • Real-time Failure Mode Detection • Remote Monitoring & Alerting • Energy Savings Dashboard • Service Dashboard Toolbox • Performance Sensors • Compressor Current • Condenser Air Temp • Condenser Liquid Line Temp • Ambient Temp • Relative Humidity • Water Pressure • Optional Sensors: • Water Flow • True Power

47. Gridium

48. Gridium 15-minute energy model Proprietary techniques to predict demand, decompose demand drivers, and highlight differences between actual and expected performance. Pattern recognition Machine learning algorithms to identify operational problems automatically as soon as they occur. 15-minute rate model Assign real prices to energy events, taking into account time-of-use rates, demand charges, and program enrollment.

49. Gridium: Snapmeter Service Diagram Snapmeter delivers a weekly email to building staff that aggregates forecast and historical information and drives actions that deliver savings. • Snapmeter Key features: • Save 3-5% • No hardware or software • ROI of 400% or more • Best energy analytics value available Weekly email Utility Bills Tariff books / Rates Efficient Data Acquisition and Aggregation Interval Data • Snapmeter helps: • Monitor weather adjusted energy performance • Forecast and reduce SCE and PG&E demand charges • Highlight abnormal usage and associated costs • Understand the cost impact of operational changes • Take simple actions to reduce spend Weather

50. Lighting