AMPY Next generation Pay As You Go – two – way communications and much more!

Overview of system architecture

System functionality – over view of key functions Full Pay As You Go functionality –Tokenless prepayment in the future enabling phone or internet based vending Remote reconfiguration between credit and Pay As You Go mode Customer budgeting information Demand response –Critical peak pricing –Time of Use pricing –In-home display On-line enquiries –Easier query resolution Load profiling –15 minute interval data collected remotely “Last gasp” power outage notification Compatibility with expected requirements of the OEB

Overview of system architecture: point to multi-point

Point to Multi-Point Advantages For pay as you go applications, a single concentrator can control large geographic area of meters. –Long range communications - Lower number of concentrators Lower number of backhaul connections Many 1000s of meter controlled by one base station –Does not require saturation installation of meters Consistent with Pay As You Go being used for a proportion of customer base System can start working as soon as the first base station is installed –Proven technology Used in UK metering trials (100,000 units) Rolled out in car tracking (Lo-jack)

Point to Multi-Point How it works - –Uses Ultra Narrow Band Telemetry (gives better S/N ratio) Enables long range from low power, low cost endpoints Endpoint uses Very Narrow band radios Base Station uses wideband radio –Digital Signal Processing subdivides received signal into many narrow bands »Allows Base Station to receive many transmissions at the same time –“Find a Friend” feature enables one hop to cope with difficult sites

Assessment of typical installation Assumptions Base Station Antenna Height 10m (30ft.) Meter Height 1.5 (3-4ft.) Real world propagation study at SRP: on average, 3,800 meters controlled by each concentrator without load profiling Meters/sq.mile at meter location Meters/sq mile at Base Station location Terrain typeMax Radio Range >3000AND>3000URBAN2 Miles >3000OR>3000MIXED URBAN3 Miles >1000OR>1000SUBURBAN4 Miles <=1000AND<=1000RURAL6 Miles

Woodstock Hydro coverage Woodstock Hydro - Territory Coverage

Radio Performance Main Performance Criteria – –On demand read Performance SuccessTime 90 %20 seconds 99%60 seconds

Radio Performance –Prepay transaction –Demand response signalling –Power outages CoverageTime 99.9%Within 4 Hrs for full acknowledge Outages Reported Time 99%Within 120 seconds SuccessTime 90 %20 seconds 99.9%600 seconds

Proposed Hardware Specifications

Modes of Operation Four Modes of Operation - –2-Way Smart meter with remote disconnect/reconnect Meter fitted only –2-Way Smart meter,remote disconnect/reconnect and budgeting information to customer Meter and in-home display fitted –Pay-as-you-go Meter and in-home display fitted –Demand Response Meter and in-home display fitted No disconnection (meter can be reconfigured remotely)

Meter Specification Fitted with Radio Module and PLC as standard Features – –Internal Contactor –Load Profiling Stores 15, 30 or 60 minute profiles Optional collection –Outage Detection Sends ‘Last Gasp’ on power loss Optional –Approval to FM 12S (network)

In-home display Specification In-home display fitted with ‘Traffic Light’ system to show tariff level –Tariff band can be switched between different preset tariffs according to normal, peak or critical pricing Global Broadcast message for tariff groups Three lights on in-home display facia (green, amber, red) show tariff level

Base Station Base Station Consists of – –Radio DSP Board –Single Board PC –Power Supply –Modem Weatherproof Housing Antenna –Omni directional antenna, length 3-4 ft –Height assumed to be 30 feet above ground Backhaul –Any broadband connection (GPRS, ADSL, landline, fibre, etc.)

System specification New development will build on existing features of AMS software Either stand alone operation or integration with existing CIS Will work within the competitive market in Ontario as part of Woodstock’s development with Systrends

Summary New development offers highly featured system: –Pay As You Go, including tokenless –Demand response –On-line enquiries –Customer information inside the home –Compatibility with expected OEB requirements Architecture is simple –Suitable for both saturation and partial roll-out Initial roll-out with SRP Available from late 2006