Wind Energy 101

NextEra Energy Resources

February 23, 2010

Adam Rickel

2

NextEra Energy Resources is the largest generator

of wind and solar energyin North America and operates the largest solar fields in the

world

3

NextEra Energy Resources Portfolio

4

Stateline

Vansycle

Gray County

WPP94SW MesaKing Mt. .

Lake Benton IIMontfort

Mountaineer

North Dakota

South Dakota

Cerro Gordo

Hancock

New Mexico

High Winds

Delaware Mt..

Waymart

Oklahoma

Wyoming

SomersetGreen Mt.MeyersdaleMill Run

Cabazon

Green Power

WPP93

Weatherford

HorseHollow

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

NorthernColorado

Butler RidgeMower

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

7

8

THE TURBINE

TOTAL HEIGHT =

388 FEET TALL

(32 STORY BUILDING)

9

generator

tower

gearboxhub

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 12-18 months

• Obtain required permits

• Conduct environmental studies

• Define boundaries and turbine locations

• Start construction 9-12 months

• Total time: 24-48 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

0 1000 2000 3000 4000 5000

< 1

250

700

700

800

1000

1000

5500

WHAT KILLS BIRDS

• Annual study• Based on 10,000 Birds

*Stats from: “AWEA.ORG”

18

TURBINE NOISE LEVELS

*Stats from: “AWEA.ORG”

19

20

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

• 217.5 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

33SOURCE: GWEC

TOP TEN COUNTRIES BY MW OF WIND POWER (AS OF DECEMBER 2008)

RANK COUNTRY EXISTING COUNTRY NEW CAPACITY

1 US 25,170 US 8,358

2 GERMANY 23,903 CHINA 6,300

3 SPAIN 16,754 INDIA 1,800

4 CHINA 12,210 GERMANY 1,665

5 INDIA 9,645 SPAIN 1,609

6 ITALY 3,736 ITALY 1,010

7 FRANCE 3,404 FRANCE 950

8 UK 3,241 UK 836

9 DENMARK 3,180 PORTUGAL 712

10 PORTUGAL 2,862 CANADA 523

34SOURCE: AWEA

TOP TEN US STATES BY MW OF WIND POWER (AS OF OCTOBER 2009)

RANK STATE EXISTING UNDER CONSTRUCTION

1 TEXAS 8,796.68 660.05

2 IOWA 3,053.28 399.3

3 CALIFORNIA 2,787.13 20

4 MINNESOTA 1,804.91 60.4

5 OREGON 1,659.24 336.5

6 WASHINGTON 1,605.28 559.2

7 NEW YORK 1,274.3 21

8 COLORADO 1,241.95 54.8

9 ILLINOIS 1,116.06 741.9

10 OKLAHOMA 865.4 165.7

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?