December 10, 2009 Wyoming Pipeline Authority Happy Jack Wind Farm 1
Black Hills Corporation An integrated and diversified energy company Utilities Gas Utilities Colorado Natural Gas Iowa Natural Gas Kansas Natural Gas Nebraska Natural Gas Electric Utilities Black Hills Power Cheyenne Light, Fuel & Power * Colorado Electric Non-Regulated Energy Coal Wyodak Resources Oil & Gas Black Hills Exploration & Production Power Generation Black Hills Electric Generation Energy Marketing Enserco Energy Fuel, Generation, and Utilities * Supplies electric and gas utility service to Cheyenne, Wyoming and parts of Laramie County 2
BHC Non-Regulated Calgary Golden Operation Summary * Doing business in 10 states and Calgary, Alberta, Canada Oil and gas wells in Powder River Basin, Piceance Basin and San Juan Basin 186 Bcfe reserves 83% natural gas & 17% oil 141 MW IPP capacity Approximately 274 million tons of low-sulfur Powder River Basin coal for low-cost, mine-mouth electricity generation Energy marketing has been a profitable business every year since inception Power generation Gas production Oil production Coal mine Energy marketing * Information as of 12/31/2008 3
BHC Utilities MT WY SD Black Hills Power Customer Service Center (Rapid City) Utilities Operation Summary* 759,400 total customers 6.0 million MWH annual electric sold 54.6 million Dth annual natural gas sold 92.8% generation availability 630 MW net generation capacity Electric Operations HQ (Rapid City) Cheyenne Light NE Nebraska Gas IA Iowa Gas Gas Operations HQ (Omaha) Natural Gas Operations HQ (Omaha) CO Customer Service Center (Cheyenne) Customer Service Center (Lincoln) Colorado Gas Colorado Electric KS Kansas Gas Gas services Electric services * Information as of 12/31/2008 4
Cheyenne Light Fuel & Power WY Operation Summary: 1882 Brush Swan Electric Co. 38,000 Electric Customers 34,000 Natural Gas Customers 1,200 sq mi service territory 1 million MWH Annual Electric 4.5 BCF Annual Core NG Sales (transport gas addt l 8.8 BCF) New peak load of 176 MW set on Dec 14, 2008 Cheyenne Light Generation assets: Coal: 95 MW (Wygen II) Coal: 60 MW (Wygen I* PPA) Gas: 40 MW (Gillette CT #2* PPA) Wind: 25 MW (Happy Jack & Silver Sage Wind Farms * PPA) * Plants owned by our non-regulated power generation subsidiary 5
Happy Jack Wind Farm Owned and operated by Duke Energy Cheyenne Light, Fuel & Power & Black Hills Power have a 20 year purchase power agreement 14 wind turbines (2.1 MW) Happy Jack Wind Farm capacity 14 x 2.1 = 29.4 MW Can produce 100 million kwh each year 6
Silver Sage Wind Farm Owned and operated by Duke Energy. Commercial Operation Date -Oct. 1, 2009 Cheyenne Light, Fuel & Power and Black Hills Power have 20 year purchase power agreement for 30 MW 20 wind turbines Each turbine is rated at 2.1 MW Silver Sage Wind Farm capacity 20 x 2.1 = 42 MW 7
Happy Jack/Silver Sage Wind Farms Wind turbine dimensions Tower: 260 ft 3 Blades Horizontal Axis Blade: 145 ft Diameter: 290 ft Rotational speed- 15rpm Blade tip speed- 159 mph Making tip of blade over 400 ft 8
Happy Jack/Silver Sage Wind Farms Cheyenne Wind Data Average annual wind speeds of 15-18 mph 37-40 % capacity factor Wind speed specifications Cut in wind speed: 9 mph Rated wind speed: 31 mph Cut out wind speed: 55 mph 9
Wind Turbine Information Power Curve 2500 2000 Power Output (kw) 1500 1000 500 0 9 11 13 16 18 20 22 25 27 29 31 34 36 38 40 43 45 47 49 51 54 56 Wind Speed (mph) 10
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Challenges Facing Renewables High initial capital costs Geographic limitations Intermittent / Variable nature Transmission availability and cost Environmental and aesthetic challenges (NIMBY) 12
CLF&P Peak Load Profile 14 December 2008 LOAD [ MW] 200 180 160 140 120 100 80 60 40 20 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 13 TIME [HR] CLF&P PEAK LOAD [MW] CLF&P PEAK LOAD [MW] HJ WIND CLF&P FARM PEAK [MW] LOAD [MW] PURCHASE CLF&P PEAK FROM LOAD BHP [MW] PURCHASE CLF&P BHW WYGEN PEAK FROM LOAD 1 BHP [MW] [MW] BHW WYGEN 2 1 [MW] BHW WYGEN 2 1 [MW] WYGEN 2 [MW] WYGEN 2 [MW]
CLF&P June Peak Load Profile CLFP Resources for June 2009 Peak Day 170 160 June Peak 158 MW Happy Jack Output.33 MW 150 140 MW 130 120 110 CLFP HJ Output Economy Purch. Wygen 1 used for load Wygen 2 100 90 80 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Hour 14
15 35.0 30.0 25.0 20.0 15.0 10.0 5.0 0.0 Happy Jack Wind Farm Average August vs December MWh Production by Hour Average August MWh Average December MWh Rated MWh 1:00 AM 3:00 AM 5:00 AM 7:00 AM 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM 7:00 PM 9:00 PM 11:00 PM Hour MWh Produced
16 30 25 20 15 10 5 0 Happy Jack Wind Farm December 5, 2008 MWh Production by Hour 7:00 AM 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM 7:00 PM 9:00 PM 11:00 PM Hour December 5, 2008 MWh 1:00 AM 3:00 AM 5:00 AM MWh Produced
17 30 25 20 15 10 5 0 Happy Jack Wind Farm December 24, 2008 MWh Production by Hour 1:00 AM 3:00 AM 5:00 AM 7:00 AM 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM 7:00 PM 9:00 PM 11:00 PM Hour December 24, 2008 MWh MWh Produced
18 30 25 20 15 10 5 - Happy Jack Wind Farm August 15, 2009 MWh Production by Hour 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM 7:00 PM 9:00 PM 11:00 PM 1:00 AM 3:00 AM 5:00 AM 7:00 AM Hour August 15, 2009 MWh MWh Produced
19 25 20 15 10 5 - Happy Jack Wind Farm August 19, 2009 MWh Production by Hour 9:00 AM 11:00 AM 1:00 PM 3:00 PM 5:00 PM 7:00 PM 9:00 PM 11:00 PM 1:00 AM 3:00 AM 5:00 AM 7:00 AM Hour August 19, 2009 MWh MWh Produced
Percentage of Generation during Peak Hours (4PM-7PM) 20% 19% On Peak Production [%] 18% 17% 16% 15% 14% 13% 12% 11% 10% Sep- 08 Oct- 08 Nov- 08 Dec- 08 Jan- 09 Feb- 09 Mar- 09 Apr- 09 May- 09 Jun- 09 Jul-09 Aug- 09 Sep- 09 Month 20 On Peak Production (4PM-7PM)
Public Opposition NIMBY Not In My Back Yard NIABY Not In Anyone s Back Yard BANANA Build Absolutely Nothing Anywhere Near Anyone CAVE Citizens Against Virtually Everything 21
Summary Contrary to public perception, the wind doesn t always blow in Wyoming: Majority of Wind Farm generation is produced during offpeak times Peak Period generation (4pm-7pm) approximately 13% Demonstrates continued need for base load generation We support a diverse energy portfolio that includes coal (the primary generation fuel for our company and for the U.S.) natural gas, wind, solar, biomass and hydro. 22
Questions? Contact Information Mark Stege Vice President, Operations Cheyenne Light Fuel and Power 108 W. 18th Cheyenne, WY 82001 307-778-2101 www.blackhillscorp.com 23