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