Navy Public Works Center San Diego Utilities Metering Program

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Navy Public Works Center San DiegoUtilities
Metering Program

• A Case Study for the
• FEMP/Alliance to Save Energy
• Seminar on Metering for Federal Officials
• 18 July 2002
• John Thomas
• Navy Public Works Center San Diego
• Utilities Business Support Division Director

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Topics
NAVY PUBLIC WORKS CENTER SAN DIEGO

• PWCSD background
• Genesis of PWCSD metering program
• Early efforts
• Meter reading
• Electrical Demand Avoidance Program
• Demand-Interval (D/I) metering
• Effective use of metering data
• D/I Metering at Over-the-Horizon bases
• Metering Lessons Learned/Conclusions

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Synopsis
NAVY PUBLIC WORKS CENTER SAN DIEGO

• PWCSD has approx. 11,000 meters
• - 5,879 electric (2,211 are D/I)
• - 3,966 water
• - 903 gas
• - Some steam and compressed air
• Annual utility costs 150M to 200M
• Most meters read manually
• Meter data provided via web
• Value of metering clearly demonstrated

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PWCSD Background
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Mission Provide public works support and
  services to meet client needs
• - Utilities
• - Facilities maintenance and engineering
• - Transportation
• - Environmental
• One of nine PWCs worldwide
• Navy Working Capital Fund activity

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Genesis of PWCSD Metering Program
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Client satisfaction with utility provider
• - Are services reliable?
• - Are rates low?
• - Are bills accurate?
• Old policy
• Meter some tenant facilities
• Engineered Estimates for others
• To PWCSD all facilities are tenant facilities
• Disputes regarding estimates for unmetered
  facilities

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Genesis of Metering Program (cont.)
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Options
• - Pay the bill at the main gate, dont worry
  about whos using what/where
• - A definite upside least first cost and easy
• - Pursue metering of facilities
• - Include costs of metering in PWCSD utility
  rates
• - Start with the biggest users
• - Recognize it will take time

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Genesis of Metering Program (cont.)
NAVY PUBLIC WORKS CENTER SAN DIEGO

• PWCSD Metering Policy
• - Meter facilities for electricity, water, and
  natural gas at the point of connection to the
  PWCSD distribution system. Evaluate metering of
  steam and compressed air on a case-by-case basis.
• - Consistent with OPNAVINST 4100.5D

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Early Efforts
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Throw it over the fence
• - Give entire task to contractors
• - Didnt work
• Not a core competency of most contractors
• Is the meter properly installed?
• Meters usually set by local utility

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Early Efforts (cont.)
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Need for specialized metering expertise was
  apparent
• - PWCSD size/structure enabled metering expertise
  to be developed in-house
• - Develop metering standards
• - Install meters on existing facilities
• - Ensure all repair projects or new construction
  require meters IAW developed standards
• Inspect (and correct) installations

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Early Efforts (cont.)
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Meter shop
• - Focused on electric meters first
• Most costly commodity
• - Then gas, then water
• - Leverage resources by using in-house expertise
  in conjunction with contractors
• - Work with staff to investigate/correct metering
• - Connect to Supervisory Control and Data
  Acquisition (SCADA) system where feasible

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Meter Reading
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Accurate reading of meters a problem
• - Attempted to emulate San Diego Gas Electric
  company (SDGE) meter reading program
• - Purchased hand-held data collection devices
• - Developed Utilities Consumption Monitor
  position
• Trained, trained, and trained
• - Didnt work
• - Ended up out-tasking the effort to SDGE
• Has been tremendously successful

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Electrical Demand Avoidance Program
NAVY PUBLIC WORKS CENTER SAN DIEGO

• SDGE had significant demand and time-of-use
  surcharges
• - Non-coincident and coincident or peak demand
• - Peak, semi-peak, and off-peak usage surcharges
• - PWCSD electricity rates mirror SDGE rates
• Send the right price signals to users
• Money talks -- users decide if shifting load
  or reducing demand is worth it
• - Requires demand-interval metering for accurate
  allocation of costs

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Demand-Interval Metering
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Goal to encourage minimization of demand charges
  and time-of-use surcharges
• Initially planned to obtain data real-time via
  SCADA system
• Delays in implementing SCADA and high costs of
  SCADA limited this effort
• Installation of demand-interval meters for
  larger facilities was pursued
• Tremendous side-benefit -- load profiles
• Early software had limited usability and
  accessibility

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Demand-Interval Metering (cont.)
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Initially standardized on induction-disk
  demand-interval meters with mechanical display
• No longer available -- industry moved to all
  electronic meters
• Required PWCSD to change to a multi-vendor meter
  reading handheld device
• Also wanted load profile data to be readily
  available
• Itrons MVRS , MV-90 , and MVWeb chosen

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Effective Use of the Data
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Metering data is vital for an effective energy
  management program
• - Data must be provided to those who can use it
  to manage energy/water consumption and costs
• - Todays technology makes it much easier to
  provide the data in useful formats
• Must ensure the information that is provided is
  correct

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NAVY PUBLIC WORKS CENTER SAN DIEGO
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D/I Metering at Over-the-Horizon Bases
NAVY PUBLIC WORKS CENTER SAN DIEGO

• OSD provided funding to install D/I meters at
  other Navy Region Southwest bases
• - Naval Base Ventura County
• - Naval Air Station Lemoore
• - Naval Air Facility El Centro
• - Naval Weapons Station Seal Beach
• - Naval Air Station Fallon
• Naval Facilities Engineering Service Center
  (NFESC) providing turnkey project
• - Navy metering expertise
• - Assisting base with selection of facilities to
  be metered

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D/I Metering at OTH Bases (cont.)
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Meter interval data will be uploaded nightly and
  available on the web
• Variety of communications may be used
• - Radio
• - Cell phones
• - Phone lines
• - Hardwire
• - Fiber optic
• - LAN/WAN
• - Power line carrier

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Metering Lessons Learned/Conclusions
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Its not easy
• Its not quick
• Its not cheap
• Get help
• Get the data to those who will use it
• Standardize as much as possible
• Have good specifications
• Ensure radio spectrum issues are addressed
• Consider connection to EMS or SCADA

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Metering Lessons Learned/Conclusions
NAVY PUBLIC WORKS CENTER SAN DIEGO

• Getting outages is difficult
• Its not over once the meter is installed
• Use multi-ratio current transformers
• Ensure IT folks on-board
• Meter facilities to get the most bang for the
  buck (start with the biggest users)
• Its not just about electricity
• Its the only way to effectively manage
  energy/water usage