Wind Energy 101 NextEra Energy Resources February 23, 2010 Adam Rickel

2 NextEra Energy Resources is the largest generator of wind and solar energy in North America and operates the largest solar fields in the world

3 NextEra Energy Resources Portfolio

4 Stateline Vansycle Gray County WPP94 SW Mesa. King Mt. Lake Benton II Montfort Mountaineer North Dakota South Dakota Cerro Gordo Hancock New Mexico High Winds. Delaware Mt. Waymart Oklahoma Wyoming Somerset Green Mt. Meyersdale Mill Run Cabazon Green Power WPP93 Weatherford Horse Hollow Wilton Oliver Green Ridge Sky River WPP90, 91, 91-2, 92, 93 Diablo Red Canyon Peetz Table Endeavor Langdon Logan Crystal Lake Story County Capricorn Ridge Wolf Ridge Ashtabula NextEra Energy Resources Wind Portfolio TPC Windfarms Mojave 3/5/16/17/18. Woodward Mt. Indian Mesa Callahan States with NextEra Energy Resources power generation facilities. Not shown are Quebec and Nova Scotia in Canada Northern Colorado Butler Ridge Mower Elk City Lee/DeKalb Majestic Wessington Springs

5 Clean Energy Sources

6 Why Wind? No air, water or soil pollution No waste to dispose of Renewable: we’ll never run out of fuel Lease payments to landowners Taxes to communities Purchase of local goods and services Land continues to be used as before

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8 THE TURBINE TOTAL HEIGHT = 388 FEET TALL (32 STORY BUILDING)

9 generator tower gearbox hub nosecone blade nacelle weather station

10 THE TURBINE BLADES 126 FEET IN LENGTH BLADE WEIGHT = 7 TONS

11 1. A computer turns the rotor to face the wind. 3. The blades turn a shaft inside the nacelle that spins a generator that makes electricity. 4. Power cables inside the tower take electricity from the generator to underground power lines. 2. The blades begin to rotate when the wind speed reaches 8 mph How Wind Turbines Make Electricity 5. Underground lines take the electricity to our substation. From there, the electricity goes into overhead power lines.

12 HOW THE TURBINE GENERATES ELECTRICITY Following the RED line…

13 Developing a Wind Project Identify high wind potential areas based on regional maps Conduct site survey of property Install meteorological towers and measure wind months Obtain required permits Conduct environmental studies Define boundaries and turbine locations Start construction 9-12 months Total time: months

14 WHERE THE WIND BLOWS

15 SEQUENCE OF EVENTS Land Owner Agreements Collect Wind Data Transmission Capacity Study Environmental Studies / Permitting 9-12 MONTHS Operation Construction Procure Equipment

16 Environmental Responsibility Environmental assessments determine suitability of prospective sites Land and wildlife respected and protected during construction and operations Land restored after construction Recognized nationally for environmental leadership

17 WIND TURBINES COMMUNICATION TOWERS PESTICIDES VEHICLES HIGH TENSION LINES OTHER CATS BUILDINGS / WINDOWS < WHAT KILLS BIRDS Annual study Based on 10,000 Birds *Stats from: “AWEA.ORG”

18 TURBINE NOISE LEVELS *Stats from: “AWEA.ORG”

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21 Constructing a Wind Project

22 Preparing Foundations

23 Delivering Equipment

24 Erecting towers

25 THE ASSEMBLY 400 TON 90 TON

26 Flying the Rotor

27 Some Assembly Required

28 Operating and Maintaining a Wind Facility Experienced technicians on site Operations building on site On-going training and mentoring programs Supported by centralized maintenance and environmental groups Supported by 24/7 fleet monitoring and diagnostic center

29 FLEET PERFORMANCE AND DIAGNOSTIC CENTER

30 Lee-DeKalb Wind Energy Center 145 GE wind turbines – 19 in Lee County and 126 in DeKalb County megawatts Each turbine uses about one acre of land, including access roads Approximately 75 landowners involved in project

31 Lee-DeKalb Wind Energy Center Towers are 262 feet tall at the hub Each wind turbine has three blades Atop each tower sits a nacelle Nacelle houses the generator Operates in wind speeds up to 55 mph Best wind speed is 25 and 35 mph

32 Lee-DeKalb Economic Benefits Estimated over 30 Years $400 million direct investment $42 million expected in property taxes $50 million expected in landowner payments $50 million in salaries and benefits to about 20 employees $60 million expected in purchase of local goods and services over 30 years

33 SOURCE: GWEC TOP TEN COUNTRIES BY MW OF WIND POWER (AS OF DECEMBER 2008) RANKCOUNTRYEXISTINGCOUNTRYNEW CAPACITY 1US25,170US8,358 2GERMANY23,903CHINA6,300 3SPAIN16,754INDIA1,800 4CHINA12,210GERMANY1,665 5INDIA9,645SPAIN1,609 6ITALY3,736ITALY1,010 7FRANCE3,404FRANCE950 8UK3,241UK836 9DENMARK3,180PORTUGAL712 10PORTUGAL2,862CANADA523

34 SOURCE: AWEA TOP TEN US STATES BY MW OF WIND POWER (AS OF OCTOBER 2009) RANKSTATEEXISTINGUNDER CONSTRUCTION 1TEXAS8, IOWA3, CALIFORNIA2, MINNESOTA1, OREGON1, WASHINGTON1, NEW YORK1, COLORADO1, ILLINOIS1, OKLAHOMA

35 CAREER POSSIBILITIES Developers Turbine Technicians Manufacturing Sales & Marketing Utility Engineers Geophysical Engineers Concrete/Structural Engineering Turbine Engineering (ME/EE/Aerospace) Site/Civil Engineering Microelectronic/Computer Programming Business Expertise (Financial) Legal Expertise Meteorologists Tax Specialist

36 He Works on Top of the World

37 So Does She

38 Questions?