1. STAMI (ST Advanced Metering Interface) Web Tool for the advanced management of LV Network Trends in Power Industry in the European Context VIII Antonello Buondonno Head of Europe and Americas Business Development Enel Infrastructures and Network Division Spindleruv Mlin, April 18 th 2013

2. Uso: Aziendale STAMI: ST Advanced Metering Interface Agenda ST Web Applications STAMI System Architecture Main features and tools for the LV Operation Management

3. Uso: Aziendale ST Web Applications Remote Control and automation system – ST Web Applications Network Metering System STUX/STM ST Remote Control and Automation System ST Web Applications Other Company applications

4. Uso: Aziendale ST Web Applications Remote Control and automation system – ST Web Applications Measurements Systems Statistics and Performances Management Of the Active Grid Maintenance GIS & Network SchemesEvents STAMI – ST Advanced Metering Interface

5. Uso: Aziendale STAMI: ST Advanced Metering Interface Web Tool for the advanced Network Management STAMI: dedicated Web Interface to collect (on demand and real time) specific high quality data stored in smart meters for network management purposes. STAMI main applications:  Customer Service  Network Operations  Electricity Regulation Compliance  Energy Balance and fraud detection The European Utility Award for 2010 has been awarded to Enel for STAMI Network Control Center Workstations Web Client STAMI interface On field installed Smart Meters

6. Uso: Aziendale STAMI: ST Advanced Metering Interface Web Tool for the advanced Network Management STAMI: dedicated Web Interface to collect (on demand and real time) specific high quality data stored in smart meters for network management purposes. STAMI allows to access to the following data stored in Smart Meters: The European Utility Award for 2010 has been awarded to Enel for STAMI Network Control Center Workstations Web Client STAMI interface On field installed Smart Meters  Voltage Quality  Voltage Outages  Load Profile  Daily consumption  Monthly consumption  Power threshold

7. Uso: Aziendale Data from Electronic Meters Data availability from Electronic Meters  Voltage Quality (minimum and maximum voltage value) For the current and previous week STAMI allows to access on demand to several data stored in Smart Meters:  Voltage Outages (onset time, duration, affected phase) For the current and previous billing period  Load Profile (graph of power consumption) For the last 38 days  Daily consumption (the value of energy consumption in a single day) For the last 38 days  Monthly consumption (value of energy consumption in a billing period) For current and previous billing period  Power threshold (Percentage of contractual power available to the customer) In the moment the request is made

8. Uso: Aziendale STAMI: Advanced Metering Interface Architecture LVC GSM/GPRS or PSTN LV network Users send requests through STAMI interface Interface available on Enel Intranet and on the workstations installed in Network Control Centers 1 Requests are forwarded to STAMI WS which interacts with Server ZEUS 2 Server Zeus processes requests directly connecting with Smart meters through concentrators in secondary substation. Security to read meters is managed by Zeus Itself 3 STAMI Interface Web Server Zeus Web interface for Telegestore AMM

9. Uso: Aziendale Main features and tools for the Operation Management Main Features and related benefits Customer Service: Improvement of Customer Service and LV operation activity related to customer request Network Operations: Optimization of Work Force Activities Electricity Regulator Compliance: Provide reliable and immediate data related to LV continuity and quality of supply Energy Balance: Effectively localize energy fraud & theft

10. Uso: Aziendale Main features and tools for the Operation Management Customer Service Support the Control Center Operator in case of customer request: VOLTAGE INTERRUPTIONS VOLTAGE QUALITY 10 POWER THRESHOLD (%) STAMI operator can give immediate feedback in case of customer service anomalies Customer satisfaction improvement STAMI allows to check the power threshold available to the customer to immediately localize a bad payer Immediately check defaulting customer Throw STAMI it is possible to check voltage presence and voltage quality at the supply terminal without involving a crew for verification on field Real time response from field installed equipment 1 2 3 4

11. Uso: Aziendale Main features and tools for the Operation Management Operations STAMI support daily Low Voltage Network Operations Activity: In case of LV customer warning call, STAMI operator is able to real time check the condition of the LV network supplying the electronic meter. Low Voltage Network supervising In case of LV network fault, STAMI operator may immediately verify the origin of the anomaly and program the activity on field. Optimization of Work Force activities LV line fault Electronic Meter fault VOLTAGE INTERRUPTIONS VOLTAGE QUALITY

12. Uso: Aziendale Main features and tools for the Operation Management Electricity Regulator Compliance Throw STAMI It is possible to directly see voltage outages without waiting for documentation Reliable and immediate data related to LV supply Quality of service data related to MV/LV TR and LV lines available throw STAMI may be used for reporting Quality of service monitoring Thanks to STAMI it is possible to identify LV outages with the exact indication of the beginning and the end Voltage Interruptions recording On field technician Low voltage faults and interruptions form Date/Hour/Time.... Interruption.... Fault.... Username.... VOLTAGE INTERRUPTIONS STAMI operator

13. Uso: Aziendale Main features and tools for the Operation Management Energy Balance Acquisition of load profile and daily consumptions to support fraud detection Effectively localize energy fraud & theft STAMI operators are able to perform detailed analysis on the LV network, providing support to the crews in the identification of frauds By accurate analysis, it allows to identify precisely the customers to be checked on field Energy Balance Load profile DAILY CONSUMPTIONS Central access Intranet Enel On field access MV/LV Energy Balance meter For more accurate analysis, STAMI allows to upload and analyze data coming from portable energy balance meters (ALVIN)

14. Uso: Aziendale Thank you Antonello Buondonno Head of Europe and Americas Business Development Enel Infrastructure and Network Division antonello.buondonno@enel.com antonello.buondonno@enel.com

15. Uso: Aziendale Backup

16. Uso: Aziendale STAMI: Advanced Metering Interface Web Interface: main operations Information Viewing It makes possible to quickly access and download the results coming from user requests Data request Used to send data requests: it is possible to directly ask about a Meter, a Concentrator, a customized group of meters Status of transactions Used to display all the data requests and to check their status. ALVIN Management Used to upload and analyze data coming from portable energy balance meters (ALVIN)

17. Uso: Aziendale STAMI: Advanced Metering Interface Data availability from Electronic Meters Period, Instantaneous Voltage value, V MIN and V MAX for each phase, number of samples in the allowed range (230V+-10%), number of samples out of allowed range. Electronics meters record a value every ten minutes: 1008 samples a week available.  Voltage Quality  Voltage Outages Period, onset time, duration of the interruption, affected phase, electric line involved  Monthly consumption Date, energy consumption value in a billing period on T1, T2 and T3

18. Uso: Aziendale STAMI: Advanced Metering Interface Data availability from Electronic Meters Graph and list of active and reactive power consumption and active power feeding the grid (in case of active customers). Electronic Meter stores Power average value every 15 minutes  Load Profile  Power threshold Percentage of contractual power available to the customer  Daily consumption Date and daily value of energy consumption

19. Uso: Aziendale STAMI: Advanced Metering Interface Viewing information menu: Power Threshold Defaulting Customer In case of a customer's phone call, Enel doesn’t need to send a technician on site to check if he is a bad payer. Defaulting Customer In case of a customer's phone call, Enel doesn’t need to send a technician on site to check if he is a bad payer.

20. Uso: Aziendale STAMI: Advanced Metering Interface Viewing information menù: Voltage Outages The fault can affect one or more phases

21. Uso: Aziendale STAMI: Advanced Metering Interface Load Profile Active Customer Load Profile: set of graphs available for each meter.  A Load Profile Request returns to the operator a set of graphs with the average active and reactive power consumption profile and, in case of active customers, the active power feeding the grid.  Instead of a graphic representation it is also possible to display the list of the average power consumption values stored in the smart meter every 15 minutes.  It is possible to send a Load Profile request for a single Smart Meter or a whole MT/bt Transformer. In this case STAMI returns the load profile of each Smart Meter, the Load profile, in a unique curve, of the sum of al the smart meters connected to the TR and the load profile of the energy balance meter installed in the secondary substation.  It is possible draw the Load profile of each LV line feed by the Transformer, to create any customized group of meters of which the operator wants to draw the Load Curve, to upload and display the Load curve recorded by ALVIN, the portable energy balance meter.

22. Uso: Aziendale STAMI: Advanced Metering Interface Load Profile Transformer Load Profile Measured Energy Balance Meter Aggregation of customers’ Load Profiles Sum of Energy measured by each Smart Meter Probable energy fraud Between 9.00 am to 6.00 pm the difference between the 2 curves is greater than the expected technical losses: a verification on field is needed Probable energy fraud Between 9.00 am to 6.00 pm the difference between the 2 curves is greater than the expected technical losses: a verification on field is needed

23. Uso: Aziendale Metering activities Rules and Obligations: Italian Timebased Tariff Regulation Following the introduction of the Telegestore, the Italian Regulator established specific metering rules depending on the characteristic of the customer:  For HV, MV and LV customers with power installed >55 kW it is mandatory a meter reading each hour.  For LV customers with power installed <55 kW the reading is done per consumption timeslots, F1, F2, F3, compliant with the timebased tariff regulation. PeakMid peakOff peak F3 Mon-Fri Sat Sun 00:00 F2F1 07:0008:0019:0023:0024:00 F2 F3F2F3 00:0007:0023:0024:00 00:0024:00