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Electric Energy Resources

Electric Energy Resources. Chris Nelson Commissioner SD Public Utilities Commission October 2012. The SD Public Utilities Commission. The Commissioners Chris Nelson – Chairman Kristie Fiegen – Vice Chairman Gary Hanson – Commissioner Staggered, six-year terms.

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Electric Energy Resources

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  1. Electric Energy Resources Chris Nelson Commissioner SD Public Utilities Commission October 2012

  2. The SD Public Utilities Commission The Commissioners Chris Nelson – Chairman Kristie Fiegen – Vice Chairman Gary Hanson – Commissioner Staggered, six-year terms. • Staff of analysts, attorneys, consumer representatives and other professionals work with the Commissioners to carry out the duties of the PUC.

  3. Utility Regulation Ensure safe, reliable service at fair and reasonable rates. Regulate investor-owned electric, natural gas and telephone utilities. Limited regulatory role: wireless communication companies and cooperative, independent and municipal utilities.

  4. Electricity in South Dakota Average Residential Electric Rates per kWh • SD: 9.35 ¢ • US: 11.4 ¢ • Brookings • October through June: 7.0 ¢ • July through September: 8.0 ¢ • Rural SD 9.55 ¢

  5. Demand and Energy • Energy = kWh • Demand = kW

  6. ElectricityDemand

  7. Electric Load vs. Generation Peaking Base Load Generation Surplus Sales Load Combined Cycle Member Load Time

  8. Wind Energy Benefits Sustainable Environmentally-friendly Economic Development • Limitations • Cost • Subsidy • Intermittency • Generation profile vs. load needs • Lack of (cost-effective) storage mechanism

  9. Inside a Wind Turbine

  10. Wind Potential SD ranks in the top 5 states

  11. Total Bus Bar Costs in Cents/kWh $4 Natural Gas 12.8 7.7 11.1 9.7 6.3 Wind Turbine Combined Cycle

  12. Existing Coal Plants (2010) 3¢/kWh

  13. Crow Lake Project Cost$308 Million Grant $92 60% Basin Electric $124 Tax Recovery $92

  14. 9200 MW Capacity (92 million light bulbs) First 40 days of 2011 2900 MW Generated – 32% February 28 5500 to 1500 in 12 hours Forecast 6000 – Actual 4400 Difference is equal to Oahe, Big Bend, Fort Randall Shut off 16 million light bulbs?? Wind Variability - MISO Area

  15. Wind GenerationApril 2010 Crow Lake

  16. Generation Profile vs. Load Profile

  17. Recent Development • Tatanka Wind Project – 88.5MW • McPherson County • Wessington Springs Wind Project – 51MW • Jerauld County • Buffalo Ridge I – 50.4MW • Brookings County • Titan Wind Project – 25MW • Hand County • Day County Wind Farm – 99MW • Day County • Buffalo Ridge II– 210MW • Brookings and Deuel Counties • PrairieWinds SD1 – 165MW • Jeruald, Aurora and Brule Counties

  18. Successful Wind Development 3 Ingredients for Success: • An excellent wind resource • Transmission • A buyer for the electricity

  19. Hydroelectric Power Advantages • Minimum pollution • Low operations and maintenance costs • Reliable and proven over time • Renewable Disadvantages • High investment costs • Can impact the environment and natural habitats • Large area of land needed, change in elevation • Reliability on rainfall - variable

  20. Hydroelectric Dam

  21. Hydroelectric Power in SD 55% of Electric Generation is Hydro Oahe Dam (1962) – 786 MW Big Bend Dam (1966) – 493 MW Fort Randall Dam (1956) – 320 MW Gavins Point Dam (1957) – 132 MW

  22. New Hydro • Missouri River Energy Services • Red Rock Reservoir, Pella, Iowa • 36 MW up to 55 MW

  23. Hydroelectric and Wind Interaction Hydro can regulate wind Hydro can shut down wind 2011 Story Missouri River Dams average annual production – 10,000 GWh May 1, 2011 forecast – 14,000 GWh September 30, 2011 forecast – 11,800 GWh 18% above average

  24. Solar Power Advantages Renewable No pollution “Fuel” is free • Disadvantages • Initial Costs • Amount of sunlight is not constant • Current Issues • Technologies and materials are changing and getting cheaper • Competition from China • Solyndra

  25. Renewable Electric Power Plants Source: EIA

  26. Nuclear Power 20% of electricity generated in US Most widely used fuel is uranium Advantages Large amount of energy produced, No emissions Disadvantages Safety concerns, waste storage, fuel limited, permits Nuclear Power Plants Serving SD Xcel Energy 3 Nuclear Power Plants in MN Fukushima, Japan Virginia Earthquake

  27. Nuclear Power Plants Source: NRC

  28. Energy Resources Used in SD

  29. Energy Resources Generated in SD

  30. Recent Siting Dockets CapEx 2020 Power Line White, SD to Twin Cities Future Siting Dockets White, SD to Big Stone Big Stone to Ellendale, ND

  31. Which Resource is Best? Best Solution: A Mix of Generation Resources

  32. Energy Efficiency How can we Save Energy? No Cost Ways Low-Costs Ways Investments

  33. Thanks for your Questions! www.puc.sd.gov

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