NEBC Renewables Transmission Challenges


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Presentation on Transmission Challenges to Renewables Integration for NW Environmental Business Council, presented 16 April 2009 in Portland Oregon

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  • NEBC Renewables Transmission Challenges

    1. 1. Transmission Challenges for Renewables <ul><li>NW Power & Conservation Council & BPA slides used and special thanks to Tom Eckman for keeping humor in a dry subject </li></ul><ul><li>How to integrate Renewables: wind, solar, geothermal, wave or tidal, biomass? </li></ul><ul><li>Presentation: </li></ul><ul><ul><li>History & Politics </li></ul></ul><ul><ul><li>System Characteristics </li></ul></ul><ul><ul><li>Economics </li></ul></ul><ul><ul><li>Smart Grid </li></ul></ul>
    2. 2. History & Politics <ul><li>Bonneville Power Administration – 80% of PNW Transmission Lines </li></ul><ul><li>BPA facilitates renewables with transmission system connections/studies and the funding of Bonneville Environmental Foundation </li></ul><ul><li>It is a political organization driven by its customer utilities, regional Congressional delegation and public opinion </li></ul><ul><li>BPA Power Contracts limit public customer self generation, utilities are risk-averse, public or private, due to regulation and governance </li></ul>
    3. 3. PNW early 80’s Utility Reaction to Power Council’s First Plan Was “Mixed” Could today’s word be Renewable?
    4. 4. Characteristics <ul><li>Wind has a capacity factor of only 30% (it only blows 30% of the time) and there is no correlation between when the wind blows and peak generation needs </li></ul><ul><li>Solar only during the day, maximum in summer, minimum in the winter </li></ul><ul><li>Wave & Tidal have great predictability </li></ul><ul><li>Geothermal is a good base load resource </li></ul><ul><li>Biomass could be dispatched </li></ul><ul><li>Wind requires within hour capacity ramping, Hydro system is essentially is a giant storage system, except there may not be enough hydro-capacity to meet sudden within hour changes in wind conditions </li></ul>
    5. 5. Characteristics Base load resources
    6. 6. Characteristics East – West Power Flow (winter peak, summer growing) North – South Flow (summer to south, winter to north) California – Big Market for Renewables Alberta Tar Sands
    7. 7. Big Problems in River City Wind integration options being talked about: Gas Turbines or Pumped Hydro Storage
    8. 8. Energy Efficiency is Still the Cheapest Option Economics drives resource decisions by utilities and regulators
    9. 9. Economics The PNW Plans To Meet Nearly All Future Load Growth With Conservation and Renewable Resources
    10. 10. Smart Grid <ul><li>DOE definition: </li></ul><ul><ul><li>Self-healing from power disturbance events </li></ul></ul><ul><ul><li>Enabling active participation by consumers in demand response </li></ul></ul><ul><ul><li>Operating resiliently against physical and cyber attack </li></ul></ul><ul><ul><li>Providing power quality for 21st century needs </li></ul></ul><ul><ul><li>Accommodating all generation and storage options </li></ul></ul><ul><ul><li>Enabling new products, services, and markets </li></ul></ul><ul><ul><li>Optimizing assets and operating efficiently </li></ul></ul><ul><li>All of these are enabling characteristics for operation of the electrical grid </li></ul>
    11. 11. Demand Response GIS Mapping Energy Efficiency
    12. 12. Smart Grid (stimulus) <ul><li>BPA – 3.25 billion spending authority increase (stimulus), impact on renewables? </li></ul><ul><li>Regional Reality: BPA oversight of $100 million (50% match) </li></ul><ul><li>The Smart Grid could help integrate renewables </li></ul><ul><li>Broadband infrastructure in rural areas could help integrate more renewables in rural areas (east side at community scale) </li></ul><ul><li>Demand Response (thermostat set back, water heater turn off) on the west side of the Cascades could open up transmission for renewables (reduce load on west side) at peaks </li></ul><ul><li>The Smart Grid can provide demand response economically, securely and in real time to help integrate renewables (National Grid in the UK has provided “ancillary services” since 1997 using a pre-Internet system, saving 100’s of millions of cost while reducing greenhouse gas emissions) </li></ul><ul><li>What would this require? Consumer education and involvement, commercial and residential </li></ul>
    13. 13. Take Away <ul><li>What should future power system development be: (both generation and enabling technologies) large scale centralized or small scale distributed? </li></ul>