Brian Parsons Consumer-Owned Utility Wind Grid Integration Cost Share Program Webinar December 6, 2007

2. Wind Systems Integration Bulk power focus (transmission, not distribution) Main Activities Resource Assessment Modeling Methods Development Operational and Interconnection Studies Education and Outreach Bulk power focus (not Distributed Interconnection) Advising PUCs and the power industry as technical reviewers to integration studies Participate in regional transmission, integration studies Data resource and methods development Bulk power focus (not Distributed Interconnection) Advising PUCs and the power industry as technical reviewers to integration studies Participate in regional transmission, integration studies Data resource and methods development

3. Activity Flowchart

4. Wind Resource Assessment General state level maps Representative of average resource at 50m Good for initial site screening Don�t capture wind variability or geographic diversity Modern wind turbines hub heights of 80-100m Posted at www.windpoweringamerica.gov Anemometer measurements Not much public data 100m towers expensive ($50-100k) Key for atmospheric model validation

5. �Distance (mi) Lake Benton Storm Lake Trent mesa 850 750 King Mountain 960 880 Indian Mesa 980 900 TWPP 990 920 � �Distance (mi) Lake Benton Storm Lake Trent mesa 850 750 King Mountain 960 880 Indian Mesa 980 900 TWPP 990 920 �

7. Technical Support of Integration Studies Northwest Wind Integration Forum Avista, Idaho Power, and BPA integration work CA Intermittent Analysis Project 33% renewables Xcel/PSCO Integration and capacity value Arizona Public Service Minnesota 25% energy penetration

8. Western Wind and Solar Integration Study Both studies will include wind field meso modeling and power systems simulations Utility planning and operational staff involvement is criticalBoth studies will include wind field meso modeling and power systems simulations Utility planning and operational staff involvement is critical

9. Western Study WestConnect - group of transmission owners Wind (up to 30%), CSP, and PV integration Investigate geographic diversity, comparison of in-state and out-of-state resources, how can hydro help, role and value of wind forecasting Integrated into this study is WestConnect�s study of balancing area cooperation to manage variability Regulation Load following Data collection underway, analysis starts Jan. Final report in �09. For those who aren�t familiar with this project Western Governor�s Clean and Diversified Energy Initiative - 30 GW clean energy by 2015 President�s Advanced Energy Initiative - wind can supply up to 20% of US electricity consumption For those who aren�t familiar with this project Western Governor�s Clean and Diversified Energy Initiative - 30 GW clean energy by 2015 President�s Advanced Energy Initiative - wind can supply up to 20% of US electricity consumption

10. Key Tasks- Eastern Wind Integration & Transmission Study Develop high quality wind resource data sets for the wind integration study area (mesoscale modeling, 3 years)

11. Eastern Study Production Simulation Analysis to examine impacts of 20 and 30% wind penetration in MISO/PJM/SPP/TVA by 2024 Transmission Planning Study to examine necessary transmission for 20 and 30% wind Transmission planning to be coordinated with broader regional transmission planning (e.g., with SERC, NYISO, ISO-NE) and other non-renewables-focused scenarios Stakeholder webinar held for input - 83 participants RFP to be released soon

12. Utility Industry Resources

13. IEA Activities Participation in Task 25 - Design and Operation of Power Systems with Large Amounts of Wind Power Produced state-of-the-art report Operating Agent sponsorship and Participation in Task 24 - Integration of Wind and Hydropower

14. Growing power oscillations that occurred during the 10 August 1996 blackout in the North American Western-Interconnected system: (a) actual recorder power oscillations on the California-Oregon Interface (COI) and (b) the simulated event based on the initial Western System Coordinating Council (WSCC) power system model database. This disparity was the motivation of much modeling and testing activity that has since continued in the now Western Electricity Coordinating Council (WECC). (Figure courtesy of Bonneville Power Administration.) Growing power oscillations that occurred during the 10 August 1996 blackout in the North American Western-Interconnected system: (a) actual recorder power oscillations on the California-Oregon Interface (COI) and (b) the simulated event based on the initial Western System Coordinating Council (WSCC) power system model database. This disparity was the motivation of much modeling and testing activity that has since continued in the now Western Electricity Coordinating Council (WECC). (Figure courtesy of Bonneville Power Administration.)

15. Transmission Planning Technical Assistance Renewable Energy Zones - Build Transmission First Western Renewable Energy Zones High Plains Express State Teams Wind data analysis for TOT3/Wyoming Colorado Intertie Technical assistance to subregional planning groups (SWAT/CCPG, WestConnect, etc)

16. National Wind Coordinating Collaborative National Transmission issue briefings Wildlife and Transmission Meeting Regional Transmission stakeholder forums WECC: Fort Collins Meeting (CDEAC followup and WREZ initiative) Upper Midwest: South Dakota Meeting SPP Meeting