1. WindCORE Control Center for Wind Farms Miguel Angel Chimeno Iberdrola Ingenieria y Construccion

2. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 2 Table of Contents 1.IBERDROLA 2.IBERINCO 3.Wind Energy introduction 4.WindCORE definition 5.WindCORE objectives 6.WindCORE Energy control functions 7.WindCORE Technical characteristics 8.System Structure 9.System Functions 10.Other System Functions 11.WindCORE Architecture 12.Customer case: PI Subsystem 13.WindCORE typical PI Subsystem 14.WindCORE Benefits 15.Payout calculation

3. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 3 IBERDROLA Sound position on the Spanish market and international presence in more than 20 countries; mainly Mexico and Brazil IBERDROLA  Merger of Hidroeléctrica Española - Iberduero (1991) IBERDROLA is the world leader in Wind Energy, and is one of the largest industrial corporations in Europe by market capitalization, sales and profits Global gas and electricity operator through profitable growth strategy and creation of value for clients and investors

4. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 4 Evolution of installed capacity and objective (MW) Iberdrola at the renewable business Iberdrola is one of the world´s leading operators in renewable energies with 3,810 MW (3,494 wind) and with a target of 6,200 MW for 2008 Capacity breakdown (MW), Dec 2005 x 12,2 6.200 3.810 3.200 1.414 507 2000 … 2002 … 2004 … 2005 (1) … 2008E (2) (1) Includes stakes in Rokas Group (2) Latest forecast 91%9%100% 3,810 3,494 316 WindMinihydroTOTAL 5.000 MW national 1.200 of international development

5. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 5 * Dec. 2005 Iberdrola: World leader in installed capacity in wind MW 3,494 3,193 1,694 Renewable energies

6. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 6 IBERINCO Founded in 1995 IBERINCO incorporating all engineering and construction activities within the IBERDROLA group Turnover 475 M€ in 2005 Wide international experience with projects in more than 30 countries IBERINCO develops projects of: –Power plants (Thermal, Nuclear Hydraulic and Renewable Energy Plants) –Electricity distribution networks (Substations, Lines) –Communication and control systems for utilities

7. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 7 Wind Energy introduction AEROGENERATOR TRANSFORMER LV / MV LV MV MV CABINETS UNDERGROUND LINE MV TRANSFORMER STATION MV / HV

8. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 8 Wind Turbine typical components 16 17 11 12 1314 18 19 20 1 2 34 10 5 7 8 15 6 9 1. Blade 2. Hub controller 3. Blade bearing 4. Main carrier 5. Composite disk coupling 6. Main disc brake 7. Oil cooler 8. Yaw gears 9. Generator 10. Polipasto 11. Anemometer and wind vane 12. Pitch actuator 13. Machine foundation 14. Tower 15. Bearing controllers 16. Shock absorbers 17. Turning crown 18. Turning differential 19. Electrical control 20. Hydraulic group

9. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 9 Why wind energy? 1.- We now live in an era of energy uncertainty. 2.- Europe’s dependency on imported fossil fuel has become a threat to economic stability because of the impact of increased fuel prices on the cost base, most notably on the price of electricity 3.- Europe is an energy intensive region heavily reliant on imports; already today, it imports 50% of its energy needs 4.- Europe is the world leader in renewable energy and in the most promising and mature renewable technology, wind power 5.- The economic future of Europe can be planned on the basis of known and predictable cost of electricity derived from an indigenous energy source free of all the security, political, economic and environmental disadvantages associated with oil and gas. 6.- A large contribution from wind energy to European power generation is feasible in the same order of magnitude as the individual contributions from the conventional technologies. 7.- The capacity of European power systems to absorb significant amount of wind power is determined more by economics and regulatory rules than by technical or practical constraints. Already today a penetration of 20% of power from wind is feasible without posing any serious technical or practical problems. (Source: EWEA www.ewea.org) Wind Energy is promoted by the European Union as an effective way to reduce emissions (Kyoto)

10. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 10 WindCORE definition A control centre for wind farms that allows remote supervision, control, and data acquisition 24 / 7 for Operation and Maintenance Able to communicate with other energy management centres Implemented energy control functions to satisfy the grid operation requirements as of the TSO (Transmission Operator System) Easily scalable by means of aggregation. Although presently the WindCORE developed for Iberdrola is managing almost 140 wind farms (4000 wind turbines) worldwide, these figures could be no limits exceeded.

11. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 11 WindCORE Objectives Cost reduction in O&M –By centralizing operation, resource optimization is achieved with a significant reduction of local staff Reduction of unavailability costs –Continuous monitoring and remote operation of wind farms –Remote pre-diagnosis and activation of local maintenance squads for the solution of failures Implementation of energy control functions –To meet new grid operation requirements based on high penetration rate of wind energy… Centralized way to communicate with other energy management centres

12. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 12 WindCORE : Energy Control Functions Operate at reduced power levels during periods with reduced transmission capacity or in order to solve technical restrictions: –Active power regulation at each wind turbine –Transmission of set point from control centre –Active power regulation at wind farm Cooperate in voltage and reactive power control –Power factor regulation (cos φ) at wind turbine –Power factor regulation at wind farm also with compensating elements in substation Send the production forecast to the market including the forecast correction based on wind turbine availability (CorPreDi) Fault/Loss Energy calculation for warranty claims and economy dispatching

13. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 13 WindCORE : Technical Characteristics Capacity to optimally manage a great quantity of information. Multimedia alarm management. Flexible and centralised configuration. Object oriented technology. TCP/IP communications. Communication protocol by exception. Capacity for application development and integration.

14. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 14 Structure of the System Distributed client/server architecture, which assures: Availability and reliability Exact adaptation to needs at any given moment High performance Growth by adding on according to the needs Data processing at different levels Centralized and on-line configuration

15. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 15 System Functions WEB Server User Interface User Management Data Detail Alarm Warnings and Events Advanced Alarm Manager (Multimedia and Squad Manager) Historic Data Storage Historic Reports. Calculation Reports Dynamic Configuration Tool

16. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 16 System Functions WEB Server User Interface

17. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 17 System Functions Dynamic Configuration Tool User Management

18. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 18 System Functions Alarm Warnings and Events Advanced Alarm Manager (Multimedia and Squad Manager)

19. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 19 System Functions Historic Data Storage Historic Reports Calculation Reports

20. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 20

21. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 21 Other System Functions Synoptic displays with zoom, panning, decluttering and Boolean graphic operators. Integrated multi-screen management. Testing of command discrepancies Assignable command privileges depending on users, profiles and areas. Change counters and chronometers. Dynamic filters of Operation Workstations. Programmable functions by cycle, event or exception. Exporting or importing of configuration data in Excel or Access. Centralized configuration unique for the entire application. Recipe manager. Task programmer. Multimedia interfaces. Historical and real-time trends Optimised formulas and expressions. Integrated Basic SCADA.. Capacity to incorporate video for Telesurveillance.

22. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 22 Iberinco HISTORICAL SCADA + PI System Colour W/B Ethernet Network (1000 Mbps)-TCP/IP SCADA#1 HDB#2 OPERATION CONSOLE #1 Corporate Network ROUTER GIS MAINTENANCE FAILURES. OTHERS Ethernet-TCP/IP INTRANET INTERNET FIREWALL CORPORATE INTEGRATION SCADA #2 HDB #1 ROUTER #2 WAN ROUTER #1... SIPCO WIND FARM 9999999 9 ROUTER OPERATION CONSOLE #2 ENGINEERING WORKSTATION SMS e-mail Fax Phone Multimedia Alarms Manager Communications Front-End #1 Communications Front-End #2 Web server Communications Front-End #7... WindCORE Architecture

23. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 23 Customer case: PI Subsystem 1.Reference: Iberdrola Renewable Energy Operation Centre - Currently it operates almost 140 Wind Farms (including those outside Spain), i.e. 4,000 turbines, i.e. over 1,200,000 acquired data - The 250,000 most significant data points are processed by the PI Subsystem (included an extension to be executed in the short term)

24. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 24 Customer case: PI Subsystem 1.Reference: Iberdrola Renewable Energy Operation Centre - Major parameters of: Wind Farms (state, pitch angle, main shaft speed, oil temperatures…) Electrical Substations (active and reactive power, voltage…) And Meteorological data from each wind turbine (temperatures, barometric pressures, wind speed…) are being acquired by the PI Enterprise server, stored in the Historian subsystem, and Rt info is being used in trend displays, Production curves of Wind Farms… - PI data information being used for the availabilities calculations in a maintenance system based on SAP - Mini-hydraulic stations

25. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 25 Iberdrola is applying its own professional production management model to wind energy using the CORE data Maximize economic performance of every wind farm during the extension of its lifetime Starting point Production Management Model Main goal Iberdrola’s 100 years utility culture Wide O&M expertise:  Hydroelectric  Gas combine cycles  Nuclear  Renewables  Fuel oil  Coal  Cogeneration Iberdrola doesn’t develop a wind farm to sell it Iberdrola develops to create value Systems and procedures Strategy Organization & functions “Dominate technology and key management factors”

26. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 26 DOMINA project: Development of a Production and Maintenance Management System Objective 1: Maximize economic performance of wind farms ASSET MANAGEMENT MAINTENANCE MANAGEMENT OPERATING EXPERIENCE FEEDBACK PRODUCTION MANAGEMENT Collection of every asset information in an homogeneous way Control of changes in the asset Analysis of incidents and identification of root causes Definition of WTG design modifications to increase its reliability Quantification of unproduced energy Identification of the main causes of unproduced energy Dominate technology Objective 2: Supervision of maintenance process Review and improvement of tasks Achievement of an efficient maintenance cost

27. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 27 Communications and hardware simplified architecture WAN... WIND FARM A 9999999 9 ROUTER Local Control System Corporate Network Access System... WIND FARM B 9999999 9 ROUTER Local Control System Corporate Network Access System INTRANET INTERNET FIREWALL Production Managemen t Server SAP Maintenance Management Server CORPORATE NETWORK ROUTER DOMINA SYSTEM Retro projection screen CENTRAL OPERATION CENTER NETWORK ROUTER SCADA #1 HDB #2 SCADA #2 HDB #1 IBERDROLA RENEWABLE ENERGY O&M CENTER iBerinco Historical SCADA + PI System

28. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 28 DOMINA: Production management Causes of unavailability O&M people at wind farms characterize every single stop occurred, naming causes of unavailability Iberdrola’s own methodology to obtain production reference for every WTG every day Automatically DOMINA obtains working parameters: unproduced energy, time intervals, frequencies Parameters turn into indicators that are used to control and manage production Unproduced Energy Gap identification for particular time intervals Due to unavailabilities Production reference Real production Unavailability 1 Unavailability 2 Unavailability 3 Unavailability 4 Unavailability 5 Maintenance Operation Time intervals Working parameters Production indicators Operation indicators Maintenance indicators Production indicators Operation indicators Maintenance indicators Frequencies

29. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 29 Customer case: PI Subsystem 2.Reference: Eólica CESA Renewable Energy Operation Centre - Currently it operates 18 Wind Farms in Spain, i.e. 476 turbines, i.e. over 155,000 acquired data. - 20,000 data are processed by the PI Subsystem - An extension is planned according to the new situation (growth up to 30 WF) 3.In addition, Iberdrola has other successfully References with the PI System: - The Monitoring, Diagnosis and Simulation Centre (CMDS) for Iberdrola's world-wide combined cycle facilities - On-site supervision of the Iberdrola´s Combined Cycle power plants

30. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 30 WindCORE PI Subsystem Currently WindCORE is the solution for: –This new process. It´s not known in detail what information it will be necessary for either Operation and Explotaition, and what will be the real needs of the users –The huge amount of information (between 200 and 500 data points per Turbine). Now there are around 1 million data points from the Iberdrola Wind Farms. The PI subsystem integrated in the WindCORE is able to solve: –An Historian to store for years all the requested variables in real time, without previous averages or aggregations –The averages, ranges, calculations, acumulated data, etc. with whatever time rate. This means; Whatever I want, Whenever I want, and immediately. –Web based information of whatever variable on time without cost expensive specific applications and customizables by the own user. –A complete environment to optimise the maintenance and exploitation: calculations from whatver interface (DataLink, ACE, etc.), real time reports, statistical analyses, etc.

31. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 31 WindCORE typical PI Subsystem WindCORE provides solutions for Energy Wind Mangement. Fot that purpose PI typical applications would be the following: –The use of RtPM server to act as long term time series historian, including tag configuration –The use of RtWebParts to act as web-based user interface –The use of PI DataLink and PI SMT as administrator interface –The SCADA system to provide relevant data to the PI server through the adequate PI Interface. A WEB application, using RtWwebparts and other tools, could provide information and formats according to the external user querying the data

32. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 32 WindCORE Benefits 1% estimated increase in Operation and Maintenance cost reduction (availability) O&M resources optimization Trading operations optimized through very precise production forecast Remote assistance Fault/lost energy calculations for economy dispatching

33. Copyright © 2006 OSIsoft, Inc. Company Confidential. All rights reserved. 33 Payout Calculation Cost Assumptions: Number of Wind Farms