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transcript
Nexant - Energy Efficiency Delivery
Confidential
November, 2015
Brief Overview of Nexant
Services and Introduction of
SCE ERCx
Confidential
Nexant Overview– Global Presence
– Major Clients
– Current Offerings in California
SCE Enhance RCx Program– Overview
– Retrocommissioning Refresher
– ERCx vs Traditional RCx
– Data Analytics
– Fault Detection and Diagnostics (FDD)
– Program Benefits
– AutoDR
– How it Works
– Eligibility and Signing Customers
Outline
Enhanced RCx 2
Confidential
• Founded on January 1, 2000
• Headquartered in San Francisco, California – 32 offices located throughout the United States, Europe, the
Middle East, Africa, and Asia
• Leader in the innovative strategy and planning,
design, implementation, and evaluation of many of
the largest commercial, industrial, and residential
DSM and energy efficiency programs in North
America– Senior engineers and consultants have been advising
planners, portfolio managers and implementing utility programs to reduce energy consumption for more than two decades
• Independent provider of intelligent grid software and
clean energy solutions and best-in-class energy
enterprise software
Nexant Overview
www.nexant.com
3Enhanced RCx
ConfidentialEnhanced RCx
Expertise across the globe
AtlantaBostonBoulderChandlerChicagoDes MoinesHoustonJacksonvilleLos AngelesMadisonNashville PhiladelphiaPortlandRaleighSacramentoSalt Lake CitySan FranciscoSan MateoWashington D.C.White Plains
Toronto
San Francisco
LondonUtrechtFrankfurt
BahrainCairo
CotonouAbuja
BeijingKuala LumpurNew DelhiSeoulTokyo
ShanghaiBangkokSingapore
Global Offices
Headquarters
Project Offices
Representative Offices
Planned 2014 Offices
energy industry and software specialists,
many recognized as industry experts600+
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Confidential 5
A diverse customer base
UtilitiesEnergy
CompaniesTransmission &
DistributionFinancial &
Private Equity Government
And many more…
Confidential
PG&E
– Refinery Energy Efficiency Program (REEP)
– Industrial Retrocommissioning Program (IRCx)
– Tribal Casinos
– Enhanced RCx Program (Schools and Municipals)
– Technical support for Retrofit, New Construction, RCx and audit program for PG&E
SCE
– Refinery Energy Efficiency Program (REEP)
– Chemical Products Energy efficiency Program (CPEP)
– Enhanced RCx Program
– Technical Coordinator for Automated Demand Response
SCG
– Engineering Support
SMUD
– Prop 39 Support
LADWP
– Energy Efficiency Technology Assistance Program
Current Offerings in CA
Enhanced RCx 6
Confidential
Third-party program administered by Nexant
Promotes tighter building operation practices
Utilization of Data Analytics and/ or real-time Fault Detection and Diagnostics
(FD&D) i.e. next generation monitoring
Program focus is on large commercial buildings (e.g. offices, hospitals, data
centers), and industrial facilities with an operational Energy Management
System (EMS) and an interval meter
Identification of measures through combination of analytics and onsite
investigation at no direct cost
Customer support and technical assistance during the implementation phase
Detailed M&V for the quantification of final savings and incentives
SCE Enhance Retrocommissioning Program - Overview
Enhanced RCx 7
Confidential
Lawrence Berkeley Labs studied 60 buildings of different types that showed:
Over 50% had control problems
40% had HVAC equipment problems
15% had missing equipment
25% had BAS with economizers, VFDs, and advanced applications that were
simply not operating correctly.
Source: Assoc. of State Energy Research Technology Internships and US Department of Energy
Why is Retro-Commissioning Important?
Enhanced RCx 8
Confidential
Retro-commissioning combines commissioning practices with optimization
practices for existing buildings/ facilities: existing equipment, systems and
controls
Operations typically “drift” away from normal operations decreasing efficiency
and increasing energy costs.
Deficiencies can be identified and addressed through site inspection/ testing
and trend data analysis.
New control technologies can be installed and programmed to further optimize
performance and efficiency.
Retro-Commissioning Refresher
Enhanced RCx 9
Confidential
Energy savings measure examples:
HVAC scheduling Chiller Lockout
Variable Speed Drives Chilled Water Temp
Reset
Static Pressure Reset Condenser Water Temp
Reset
OA Economizer Hot Water Temp
Reset
Supply Air Temp Reset Pump Control
CHWV/HWV Repair Air Compressor VFD/ Controls
Refrigeration VFD Controls Lighting scheduling
Retro-Commissioning Refresher – contd.
Enhanced RCx 10
Confidential
Enhanced RCx maintains energy efficiency over time
with the use of Data Analytics and/or FD&D!
ERCx vs. Traditional RCx
Enhanced RCx
-0.5 0 0.5 1 1.50
200,000
400,000
600,000
800,000
1,000,000RCx
ERCx
Years from time of install
kWh
Upon completion of RCx, operations drift increasing energy use to baseline conditions
With an Enhanced RCx solution, energy efficiency is persistent!
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Confidential
A useful screening tool that
provides high level look at the
facility, electric consumption and
demand profiles.
Also used to ensure appropriate
monitoring and energy efficiency
Data Analytics
Enhanced RCx 12
Confidential
Data Analytics
Enhanced RCx 13
Confidential
Retro-commissioning combines
commissioning practices with optimization
practices for existing buildings/ facilities:
existing equipment, systems and controls
FD&D software in conjunction with existing
DDC controls can monitor and identify
improper operations that affect energy use
and costs.
By the use of “Rules”, FD&D
is programmed to determine
when a system is not operating
correctly, identify what needs to
be corrected, and what the impact
of an issue is.
Fault Detection & Diagnostics (FD&D)
Enhanced RCx 14
15Enhanced RCx
Confidential
Retro-commissioning combines commissioning practices with optimization
practices for existing buildings/ facilities: existing equipment, systems and
controls
Identification of energy saving measures for HVAC, lighting & controls
– The RCx process is accelerated via the use of FD&D or Data Analytics with
deeper implemented savings.
Incentives: (up to 50% of measure cost)
– Advanced lighting measures $0.03/kWh
– Non-lighting measures $0.08/kWh
– Advanced non-lighting measures $0.15/kWh
– Peak demand reduction $150/kW
The ability to maintain ongoing savings and operation visibility
Program Benefits
Enhanced RCx 16
Confidential
For new EMS, Automated Demand Response (ADR) functionality is an add-
on module.
Available from multiple vendors and can be a combined with the FDD.
Incentives available to complete an Auto DR technical study and an
available $300 per kW up to 100% of installed cost.
Auto DR, A Complimentary Offering
Enhanced RCx 17
Confidential
Scope the facility Review interval data & walk the facility. Is there ample opportunity?
Investigate the facility Detailed data driven investigation at no cost to the customer Identify ERCx measures and provide feasibility report with energy and cost savings.
Implement selected ERCx measures Save energy, energy costs and earn incentives.
Verify savings M&V makes sure you are saving energy and money.
Incentives are paid out to customers.
Maintain energy savings FDD real time data provide visibility and alerts to operators OR Utilize periodic reports from interval meter analysis for identifying high-level issues
How It Works
Enhanced RCx 18
Confidential
SCE customers committed to implementing energy
savings measures
Large commercial and industrial facilities with of
100,000 square feet or larger
Similar facility types that could benefit from HVAC
and lighting control based measures.
Preferably sites with an existing DDC Building
Automation System
Eligibility and Signing Customers
Enhanced RCx 19
Confidential 20
Visit us at www.enhancedrcx.com
Enhanced RCx
Confidential
Chase Kadakia, ERCx Program Manager
909.248.6789
ckadakia@nexant.com
Waqar Mustafa, ERCx Outreach Manager
916.478.0057
wmustafa@nexant.com
Program Contacts
Enhanced RCx 21
Confidential
Questions
Enhanced RCx 22
Shared Services GroupSite Services
Southwest Utilities and Conservation
Copyright © 2013 Boeing. All rights reserved.
Southwest RegionRetro-commissioning Project
November 5th, 2015
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SCE & SCG Retro-commissioning Programs
Study Phase
– Perform trend based analysis and site survey
– Develop recommendations, savings calculations, cost estimates ROI calculations and available incentives.
– Submit feasibility study (PFS) for review and approval (SCE, So Cal Gas Lincus, CPUC)
Project Implementation Phase
– Sites analyze and prioritize recommendations
– Develop implementation plan including funding and potential incentives
– Identify root causes and implement measures
Measurement and Verification Phase
– Additional trending and analysis
– Site inspection
– Submit Implementation report (IR) for review and approval (SCE, So Cal Gas, Lincus, CPUC) 24
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Commissioning impacts performance
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• Does not meet design performance • Issues will impact performance for
the life of the system • Many customer complaints /
continuous tinkering• Manual operation shortly after
installation• High operating cost /
environmental impact
• Meets design performance • Efficient , sustainable
performance• Comfortable and productive work
environment • lower maintenance costs• Lower operating cost /
environmental impact • longer equipment life
No Commissioning Continuous Commissioning
Retro Commissioning
Initial Commissioning
Customer Satisfaction / System Efficiency
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Benefits and Risks
Benefits
Validates current building requirements
Identifies energy saving opportunities
Reduces operating and maintenance costs
Risks Potential savings will not be realized if projects are not implemented properly
How can we mitigate risk? Use consultant (3rd party) to verify that recommendations are implemented
properly.
Implement continuous commissioning (sustainment) to insure that savings do not evaporate over time (Drift).
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Efficiency Drift in Buildings
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Drift Drift
Mini retro-commissioning effort
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Site Efficiency Drift Year to Year
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Drift
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Major root cause – excessive Chilled water flow resulting in lower Delta T
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Findings and results to date
Many common opportunities at all sites Significant simultaneous heating and cooling
Reduce run hours of equipment
Fix and optimize economizer cycles (free cooling)
In many cases HVAC systems are not modified to accommodate changes in occupancy
Optimize control sequences
–Supply air temp and static pressure reset
– Chiller condenser water temperature reset
–Dehumidification / humidification
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Examples were extracted from installation reports with these qualifications
Life cycle assumes 12 years
Examples were “cherry picked” – average overall simple payback for all measures to date is approximately 11 weeks
Cost to correct measures includes a 50% reduction due to the programs financial incentives
Only electricity costs are factored into the savings. Maintenance, longer equipment life and natural gas savings are not included.
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Equipment Running Continuously
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Root causes – schedule overridden, not linked to schedule, schedule priority too low (shown)
When inefficiencies occurred – project implementation (shown), operationsLife cycle cost – $17,555Cost to correct – $25ROI – 6 days
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Dehumidification sequence in-efficiencies
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When inefficiency occurred – design and implementationLife cycle cost – $64,983 Cost to correct – $113ROI - 1 week
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Inefficiencies due to changes in occupancies
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Root cause – HVAC systems not modified to address changes in occupancy.In this case large warehouse w/ humidify control 24/7
When inefficiency occurred – Change in occupancyLife cycle cost – $148,624 Cost to correct – $260ROI - 1 week
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Simultaneous Heating and Cooling
Root causes – No supply air temp reset programming in place or if in place not working efficiently, min CFM set points too high, boxes out of calibration, VAV seals leaking by, bad VAV controllers or actuators
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When inefficiencies occurred – Design, implementation (shown) and operations Life cycle cost – $42,193Cost to correct – $115ROI – 12 days
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Results - Electricity Use in kWh
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Measures Implemented
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Results – Natural Gas Usage in Therms
BOEING PROPRIETARY 37
Drift
Corrected
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Results – Central Plant heat generation in BTU’s
38
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Results – 93.6 % Reduction in Trouble Calls
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Moving forward
Insure new systems are commissioned and optimized
Provide tools and processes to implement continuous commissioning – Pilot program for Data Analytics and Fault Detection and Diagnostics
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Cx
Baseline &Monitor CCx
RCx
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BACKUP
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Commissioning Cycles
New Asset Commissioning (Cx)Formal process for planning, implementing and verifying the construction and operation of a facility according to design intent and user requirements.
Retro-Commissioning (RCx)Asset commissioning for systems not previously commissioned
Continuous-Commissioning (CCx)Use of Baseline & Monitoring data to perform commissioning improvements on an on-going basis. (Desired future state)
Cx
Baseline &
MonitorCCx
RCx
Includes documentation of facility and training of operating and maintenance personnel. (PI DTP 218 New Construction and Renovation Commissioning and Documentation)
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Initial Installation Commissioning
Retro-Commissioning
Trending/ Monitoring
Analysis
43BOEING PROPRIETARY
Commissioning Cycle
Continuous-commissioning
New BuildingNew Equipment or SystemMajor Retrofit
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Benefits of Commissioning
Commissioning (Cx) Retro-Commissioning (RCx) Continuous Commissioning (CCx)
Reduces rework
Assures operation as-designed
Assures we get what we pay for
Lets our contractors know we are checking their work
Reduces operating and maintenance costs
System not previously Cx’d
Validates current building requirements
Assures efficient operation
Helps identify opportunities not previously known
Reduces operating and maintenance costs
Establishes system/ equipment baselines
Monitors operation to baseline for real-time situational awareness
Enables fast reaction to operational problems
Ability to tie-in Condition Based Maintenance
Sustains-the-gains from Cx & RCx
Reduces operating and maintenance costs