Slide 1

Free Critical Power for Energy Efficient Data Centers Presented by: Henk Mulder GE Critical Power 1 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012

Slide 2

What is Free Critical Power ? Free critical power is the opportunity to reduce energy consumption in data centers by using the reliable utility grid power system to help minimize the power conversions in the critical power system, especially the UPS. This free critical power is achieved with a multi-mode AC UPS (also called eco mode) that only converts power when the utility power quality is outside the voltage tolerance of the critical IT loads. Multi-Mode UPS is UPS capable of delivering highly efficient and reliable power by intelligent fast switching (15,000Good utility power quality, unmanned site Louisville4x750 kVA100%95%5%>14,000Good utility power quality, summer peak New Jersey4x500 kVA100%82%18%>12,000Utility cap switching, working to minimize eBoost Operating Experience CategoryDataComment Launched20102 nd full year # of Sites Tracked>20 sitesUsing primarily RM&D Reliability100%No load interruptions eBoost Availability>92%Averaging >8000 hrs/year/unit Unit Operating Hours>200,000Growing operating experience (Field operating data from March 2010-April 2012) 21 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012">

Multi-Mode (eBoost) UPS Case Study UPS eBoostDoubleSite SystemOutputMulti-ModeConversionOperating LocationsConfigurationReliabilityOperation HoursComments on Site Operating Experience Atlanta2x300 kVA100%98%2%>15,000Good utility power quality, unmanned site Louisville4x750 kVA100%95%5%>14,000Good utility power quality, summer peak New Jersey4x500 kVA100%82%18%>12,000Utility cap switching, working to minimize eBoost Operating Experience CategoryDataComment Launched20102 nd full year # of Sites Tracked>20 sitesUsing primarily RM&D Reliability100%No load interruptions eBoost Availability>92%Averaging >8000 hrs/year/unit Unit Operating Hours>200,000Growing operating experience (Field operating data from March 2010-April 2012) 21 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012

Slide 22

22 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012 Multi-Mode (eBoost) UPS Case Study Multi-Mode Reliability very high reliability (100% on tracked sites) and could exceed double conversion reliability with time US Utility Grid Power Quality U.S. utility power quality high and suitable for Multi-Mode deployment. Collaboration between utility, UPS OEM and end user can help increase availability Operator/Human Intervention many sites not using due to site decision to disable due to lack of understand benefit (high) vs risk (low). Power savings not direct benefit to site team (dont get evaluated on power/energy cost). Programmable Software opportunity to optimize operation with programmable software (custom schedule, etc.). Some sites use software, some do not. Parts Life some anticipation of parts life extension (if de-energized) but too early to change recommendation on maintenance/parts life interval at this stage. GE will be tracking and updating. System Configuration some system considerations (surge protection, power monitoring/metering, etc.) important to deploy. Operating Experience Lessons Learned

Slide 23

PUE Total Facilities Power = Total IT equipment usage = 1.53 Uninterruptible Power Supply Generators Power Distribution Unit Lighting Distribution Losses Voltage Drop Chillers / Pumps / AHU Precision Air-Conditioning Security Servers Workstations Storage Devices Network equipment Switches Supervisory equipment Power Usage Effectiveness (PUE) 23 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012

Slide 24

50-75% reduction in UPS losses 15-20% reduction in total losses.10-.14 pt. improvement in PUE Impact of UPS Multi-Mode on PUE PUE = 1.53 UPS Double Conversion Mode PUE = 1.39 UPS Multi-Mode (eBoost) 3x reduction in UPS losses IT Equipmen t 72% 65% 24 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012

Slide 25

50k square foot data center (5 MW load) $.10/kW-hr power cost and 10 year life cycle $310k annual energy savings $3.1MM energy savings over 10 year life cycle Multi-Mode Energy Cost Savings Typical Data Center Site SavingsUPS Global Fleet Estimated Savings ** Equivalent to four (4) Nuclear Power Plants eBoost TM 25 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012

Slide 26

Green Grid Position on Multi-Mode UPS Green Grid Data Center Maturity Model (DCMM) includes recommendation for UPS Multi-Mode (Eco Mode) Technical presentation Evaluation of Eco Mode for UPS Systems at Green Grid Tech Forum in 3/2012 (on TGG website) Upcoming detailed TGG white paper on UPS Eco Mode to help with industry understanding and adoption 26 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012

Slide 27

EPA Position on UPS Multi-Mode EPA supporting Multi-Mode or Eco Mode as innovative strategy for energy savings in UPS Operating time in Eco Mode (vs Double Conversion) varies with factors but primarily input power quality (esp. Utility Grid) and possibly human behavior EPA ENERGY STAR uses 25% weighting for Multi-Mode (Eco Mode) and expected to increase weighting with site operating data 27 GE Proprietary. All rights reserved. Copyright by General Electric Company Nov 2012

Slide 28