1. EnergyAxis® AMR System Overview
Elster EnergyAxis System Overview
03/2003
EnergyAxis® AMR System Overview
Elster Proprietary and Confidential (c) 2004

2. Presentation Overview
Elster EnergyAxis System Overview
03/2003
Presentation Overview
Elster Electricity – who we are
History and Experience
The Elster AMR Solution
Product/System Delivery Schedule
Detailed Discussions on:
MAS Communications Server
A3 ALPHA Collector
REX Meter
RF Network Operation
Elster Proprietary and Confidential (c) 2004

3. Elster EnergyAxis System Overview
03/2003
Elster Electricity – Who We Are
Elster Electricity, located in Raleigh, NC, is the former Electricity Metering division of ABB Inc. and Westinghouse Electric Corp.
Elster Electricity is a subsidiary of Ruhrgas Industries (RI), headquartered in Essen, Germany, which in turn is now owned by E.ON a large German conglomerate (over $35B in revenues).
In the USA, RI owns Elster Electricity, the former ABB Water Metering group, and American Meter Company (gas metering).
Together, we are the world’s largest supplier of gas and water meters, and a leading supplier of electricity metering.
Elster Proprietary and Confidential (c) 2004

4. History and Experience – We are not new to AMR
Our AMR, Load Management, & Distribution Automation experience began with Westinghouse and extends over 35 years
1960s Pilot-wire meter reading and Telephone AMR
1970s Encoding meter registers
EPRI trials of 2-way carrier and 900 MHz radio
1982 EMETCON power line carrier system introduced
1980s Solid state recorders & communications
Load Management and Distribution control
systems (Carrier, Ripple, VHF & FM/SCA RF)
1990s TranstexT home automation (Telephone & CEBus)
1990s - Telephone, Cellular, CDPD, satellite and RF
communications solutions for C&I metering
1999 AMR Server data collection and enterprise meter data
repository
2003 EnergyAxis 900 MHz AMR system
= Commercialized systems

5. Elster AMR Philosophy Provide two-way options whenever possible
Favor meter data “from the meter” solutions
Direct electronic register reads
Billing data auditable at meter
NO intermediate pulse storage errors or network computations
Integrate meters and communications for cost-effective solutions
Provide Meter Information solutions, not just “AMR”

6. Technology to Empower Utilities
Elster EnergyAxis® System
Technology to Empower Utilities
Cust. Info.
System
Billing /
Settlement Systems
Work Order Mgt./
Inventory
Engineering and Operations
Outage
Mgt.
System
Load Research
MarketingServices
Enterprise LAN / WAN
MAS-EE
AMR
Server
Large System Coordination
(fut. option)
Meter Data
Telephone / Cellular / Paging
WANs
Data Collection Systems
MAS
Comm
Server
Residential / C&I
Fixed Networks
Meters & Communications

7. EnergyAxis AMR System Elements
MAS Data Collection Systems
RS-232/
RS-485
Analog Cellular
Telephone or
Cellular WANs
RS-232 with CDMA/1XRTT or GSM/GPRS
ALPHA Meters with Communications
Commercial, Industrial, Residential
EnergyAxis 900 MHz LAN
REX Meters with RF Communications
Residential, small Commercial
A3 ALPHAs with RF Communications
Commercial / Industrial
Future Water & Gas with RF Communications

8. NEW Elster EnergyAxis AMR System
Entirely meter-based AMR system
Residential, commercial, industrial Electric solutions, future Water and Gas
Uses proven MHz unlicensed radio for local area networks and public Wide Area Networks
New Elster-designed repeating RF “mesh” LAN architecture
Elster MAS Data Collection systems on Windows 2000 PC platform can support up to 200,000 meters each

9. Elster EnergyAxis AMR System for Residential
Integrates 900 MHz communications into REX and A3 ALPHA electronic meters
900 MHz repeating RF LAN Solution for single-phase Residential and small Commercial applications
Future
RF WANs
Telephone
MAS Comm Server

10. Elster AMR Functionality - Commercial & Industrial
Public Networks (Telco /
Cellular)
1-ph REX Meters
EnergyAxis 900 MHz LAN
REX meters for single-phase Commercial available today
Public Networks
(Telco / AMPS / Digital Cellular / Paging)
Single or 3-phase ALPHAs
Polyphase ALPHA meters with multiple WAN AMR options available today
3-ph A3 ALPHAs
Polyphase A3 ALPHAs with repeating RF LAN communications now available for energy & demand metering only
Small Commercial sites, Strip Malls, Shopping Centers, Large Industrial Sites
MAS Comm Server

11. Single-Tier Drive-by AMR Systems
Suitable only to replace monthly meter reads
One-way inbound only
Limited data collection capability
Energy only for residential
Energy & demand or limited TOU for C&I (Elster A3 ALPHA with Itron ERT50ESS)

12. Single Tier Fixed AMR Networks
Collectors are pole-mounted
Difficult to site
Required bucket truck and crew to install or service
Costly to wire for power & comms
In Star topology, range of sub-networks is limited to one 900 MHz hop ( ’)
Meters cannot communicate around obstacles
Requires many more collectors to cover a given area
Needs more alternate “fill-in” technologies
Collector ft
Systems function as one-way inbound
AMR Modules have limited functionality, basically Energy pulse counts

13. A Mesh Network Assumes Obstacles
Elster employs a ‘controlled’ mesh where the Collector meter sets up the meter/repeater network
Algorithms emphasize reliability to each meter and allow paths to change in an organized fashion when needed.
Network configuration and changes are transparent to the operator. C
Mesh networks were developed for battlefield conditions where units are moving.
Every radio repeats every message it hears.
This is chaotic and can lead to interference when units are fixed.

14. Elster AMR System – Key Differentiating Feature
New Advanced Elster RF network
Proven 900 MHz unlicensed communications
Intelligent 2-way communications to all meters
Mesh Network RF LAN architecture
Any meter can be a repeater
Mesh networks controlled by A3 ALPHA Collector Meters
Architecture provides up to 7 Repeater Levels (8 ‘hops’ )
Allows communications around obstacles… fewer coverage “holes”
Expands Collectors’ coverage area… fewer units = lower costs
System Algorithms:
Optimize communications reliability to each meter
Support Automatic RF registration for “Plug and go” installs
Allow Self-healing communications – Units will re-register via alternate paths when local RF conditions change

15. Cost-Effective for Both Targeted or Mass Deployments
High-cost, Hard-to-Access,
Dangerous, or High-Turnover Areas
Mass Residential and Commercial Areas
Apartments
Student or Military Housing
Industrial Campuses

16. New REX Electronic Meter
New, all-electronic single-phase Elster meter
Supports Elster AMR communications on main board
Utilizes unlicensed MHz band
Frequency-hopping spread-spectrum communications
1/4-watt transmit power
Two-way communications support Scheduled & On-request reads of any meter
ANSI 0.5 accuracy class (0.2 except at temp. extremes)
Forms 1S, 2S, 3S and 4S (12S in 2Q2005)
Voltage: 120 and 240V + 20%
-40° to +85° C rating (inside the meter)
Class 20, 200, or 320 self contained

17. Elster AMR System – Key REX Features
REX meter supports flexible rates without costly equip-ment changes or site visits. Any meter can measure:
Energy (Delivered, Received, Sum, or Net)
TOU (4 Tier, 4 Season Energy)
Demand (Total + 1 Tier or 2 Tiers)
Real-Time / Critical Tier Pricing at any time
15, 30 or 60 minute Load Profiling
NO batteries needed for TOU or LP functions in most meters… time is kept by system and Collectors
Lowers initial meter cost
Eliminates battery maintenance

18. Elster REX Meter – Other Key Features
Tamper Detection
Outage / blink counts
Reverse energy always metered
Meter failure statuses
End-point Voltage data
Utility-specific LAN ID in each meter allows overlapping service territories without operational conflicts
Optional 200 A. Service Disconnect internal to the REX meter with demand limiting capability
Outage and Restoration data

19. A3 ALPHA with 900 MHz LAN Board
A3 Nodes provide polyphase AMR metering
functions with LAN operation similar to REX
Units can function as an RF network repeater and can reside on same Collector networks with REX meters
Currently available in Form 12S
Forms 9S, 16S, 35S, 36S to be available 1Q2005
Limited initial functionality
kWH energy and kW demand metering only
Future units will support TOU, LP, Reactive

20. A3 ALPHA Collector Overview
A3 Collectors can be either single-or polyphase meters
Meets ANSI standards, including C12.18, 19 & 21
Consists of A3 ALPHA meter with 2 internal boards:
WAN: Available with internal telephone outage modem; optional external CDMA or GSM cellular modem, other future RF options
LAN: 900 MHz RF Internal LAN Controller Board (ILC)
Manages LAN of up to 1,024 meters, including auto-registration and re-registration processes
Includes a Lithium TOU battery to maintain LAN system time, which is broadcasted periodically to all AMR meters in the RF LAN
Maintains current and optional TOU Tier schedules for downloading to REX meters (up to 8)

21. Elster AMR System – Future Flexibility
EnergyAxis system adaptable for:
Broadcast messaging
In-home communications
Energy Management & Load Control
In-home Display for customer messaging (Rates, kWh, kW, $)
Pre-pay metering services
Home Automation features
RF or PLC communications
REX unit supports up to 3 option boards
CUSTOMER MESSAGES
ENERGY PRICING
In-home Display 72
THERMOSTAT CONTROL

22. Elster AMR System – Future Gas & Water AMR
Elster EnergyAxis RF LAN will support RF AMR modules for Gas or Water meters or other devices
Units will operate one-way inbound to extend battery life
Latest REX can store up to 8 gas or water messages for forwarding to Collector
Battery powered AMR Module development has begun with Elster sister companies AMCO Water and AMCO gas metering
Prototype field test units will be deployed later this year
Expected commercial release in 2Q2006 (water) and 2007 (gas)

23. AMR System Functionality - Residential
Scheduled meter reads for
billing or data collection
On-request meter reads
Outage and Restoration Call-ins
Meter re-programming / RTP
Connect/Disconnect
Value-added services
1-ph or 3-ph A3 ALPHA Collector
A3 ALPHA Collector with WAN & 900 MHz LAN Boards
- AMR/Demand/TOU/LP
- Network Management
Time Synchronization of
LAN meters
- Outage/Alarm Monitoring
Public Networks (Telco/Cellular)
Apartments
REX 1-ph Meter with 900 MHz LAN
AMR/Demand/TOU/LP - Tamper Detection/ Alarms
- Virtual Disconnect
REX 1-ph Meter with 900 MHz LAN & Disconnect option
AMR/Demand/TOU/LP - Tamper Detection / Alarms
- Service Disconnect
Load Profile may be enabled for any meter, subject to capacity of Collector memory

24. Public Networks (Telco/Cellular)
AMR System Future Options - Residential
Public Networks (Telco/Cellular)
Planned Applications
- TOU and Real-time Pricing
with pre-set Load Mgt.
Gas and Water Metering
Pre-pay metering
Home Automation
A3 ALPHA Collector with WAN & 900 MHz LAN Boards
REX1-ph Meter with 900 MHz LAN & Sec. Comm. Board
Future Gas & Water Modules with 900 MHz LAN

25. Elster EnergyAxis Systems Experience
Development started in 2000
Field Testing started in 2002
227 REX Meters and 3 Collectors
System announced commercially in July 2003
Elster has placed hardware at over 35 utilities
IOUs
Public power
US NW, SW, SE, International
All installed systems are running at 100% success for daily reads
Several Trial systems now being expanded
SRP announced 125K unit expansion 10-04

26. Test Network Showing Repeater Levels
Active Collector
All 227 REX meters registered using 7 hops
(6 Repeater levels)
All 227 REX meters registered using 5 hops
(4 Repeater levels)
Active Collector
Alternate Collectors
4000 ft.
2000 ft.

27. Salt River Project Installation 470 Meters
Apartments
.5 mi.
Single-family Residences
230
Apartments
120
Patio
Town homes
120
Single Family
Residences
Verified operation with
stucco over wire
construction
Demonstrated highly
reliable daily AMR
reads
Townhouses

28. Portland General Electric Installation Planning for Backbone System Test (approx Meters over 12 sq. miles)
Testing networks of REX meter/repeaters per square mile
using 1 Collector per square mile grid
System will Provide ability to install AMR or TOU meter anywhere within the backbone network.

29. Orlando Utilities – 480 Meter Apartment Complex
0.5 mi.
2300 ft.
5 meters in Test Shed
Apartment Complex with 480 Meters
Collector

30. OUC EnergyAxis System Expansion

31. Elster System Benefits – Metering Operations
Reduce or eliminate:
Manual meter reading costs
Meter reading errors
Site-related personnel injuries and liabilities
Out-of-cycle manual reads for:
Move-outs / Move-ins
High turnover areas (apartments, military, colleges)
Estimated Reads at hard to access / Dangerous sites
Bill complaints requiring read verification
Costs of service disconnect/connect
Allows Virtual or hard disconnect without visits
Possible extension to prepay system

32. Elster System Benefits – Metering Operations
Reduce costs of changing metering requirements
Energy, Demand, TOU, RTP, LP… selectable at any time
Allows truly random selection of load and rate research
meters
Eliminate site visits to change meter to match needs
Eliminate site visits to update TOU calendar/schedules
Greatly reduces cost of TOU battery change-outs
Reduce lost revenue through early detection of
meter tampering and alarms
Reverse energy monitoring / summed energy
Outage counters

33. Elster System Benefits – Rates/Load Research
Eliminates cost of buying special purpose meters for load research
Eliminates expense of moving meters when a new sample is required
Allows truly random selection of load and rate research meter locations
Allows new rates to be developed and applied without site visits

34. Elster System Benefits – Distribution Operations
System Outage and Restoration data
Verify non-restored power areas for crew dispatch
Outage / Blink counts can pinpoint faulty equipment
System Demands
Since all meters measure with time synchronized
demand, it is possible to summarize demands for
transformers, line segments, feeders, etc.
Voltage monitoring
Improve customer service in low voltage areas
Improve system efficiencies due to lower system losses

35. Maximizing Your AMR Investment
Buy from a stable supplier that invests in R&D to support and upgrade their AMR systems
Look for systems with increasing value and functionality
Advanced features
Connectivity
Other Utility Metering
C&I
Residential
DSM
In-Home
Display
CTP
Alt WAN
2007
Gas
Water
A3 Node
Fm 12S
200A
Disc
CL 320
kWH, kW,
TOU, LP
2003

36. Summary of Utility Applications
The Elster 900 MHz Mesh Network AMR System is designed for:
Urban and Suburban service areas… not rural
Targeted AMR with high metering costs
Hard to Access meters
High turnover areas
Hazardous areas
Service Disconnect applications
Full scale AMR - when higher functionality is needed or anticipated
Residential and Commercial metering
Energy, Demand, TOU, or Critical Tier rates
Load Profile data
Gas and/or Water AMR

37. Elster Product Release Schedule
AMR system available today with:
Form 1S, 2S, 3S, 4S REX meters w/ RF LAN
Form 2S Class 320 REX
Form 2S with Integral Service Disconnect
Single- and polyphase A3 Collector Meters with
Internal Telephone or external Cellular WAN
& RF LAN
MAS 5.1 Communications Server
Form 12S REX Q2005
A3 ALPHA with 900 MHz LAN Card Q04 -3Q05
MAS 5.5 – A3 Node support for TOU 4Q2005
Load Profile

38. Electricity Meters and Systems Discover the value of the diamond