Comanche Peak Nuclear Power Plant

Existing and Proposed Units

American Society of Civil Engineers

Dallas Chapter

November 1, 2010

Comanche Peak Nuclear Power Plant

Existing and Proposed Units

American Society of Civil Engineers

Dallas Chapter

November 1, 2010

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Comanche Peak History

Unit 1 - Commercial Operation August 1990

20 years of Operation

Unit 2 - Commercial Operation August 1993

17 years of Operation

Squaw Creek Reservoir

Closed for security reasons after September 11, 2001

Reopened to public for fishing earlier this year

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Comanche Peak Units 1 & 2

Zero Safety Incidents

98.1% Capacity factor (availability) of existing units

ZeroGreenhouse gas emissions

(main units)

~ 2,500 Megawatts of electric generating capacity

~ $11 Billion Cost of Units 1 & 2

20 Years of Operation for Unit 1

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Unit 1 & 2 Operation Overview

Top priority is to maintain nuclear and personnel safety

Excellent results

Ongoing corrective action plan

Focus on management behaviors that maximize solutions

Unique cooperation within industry to share information

Constructive culture led by Servant Leaders

Costs are low – in top 5% of industry

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Units 1 & 2 Area Impacts

1,220 Employees and team members.

$100 MillionCurrent annual Comanche Peak payroll. Average salary and benefits of plant

employees is about $80,000/year.

$1 BillionTotal of tax payments and other monetary

donations to local communities.

Over $615,000

Raised for Hood County United Way in past 4 years.

$1.1 Million

Ongoing average annual payments for the construction of Lake Granbury for the past 38 years.

When payments are complete, we will have spent $46 million to fully underwrite the

construction cost of Lake Granbury.

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Comanche Peak Oversight

Created by nuclear industry

Helps industry achieve operational excellence

Evaluates & assists Accredits training

U.S. Regulatory Agency Develops rules &

regulations Inspects plants

Nuclear CommitteeComanche Peak

Operations Review Committee

Required by Technical Specifications

Includes off-site industry experts

Quarterly intensive reviewof performance

Reports to CNO & providesfeedback to the Board

Committee of Luminant Board Receives periodic reports of

CPNPP performance Reports to the Board

QA

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More than 11 Million New Texans by 2040…

Texas’ Projected Population GrowthAssuming Net Migration Equal to 2000-2040Millions

Source: Texas State Data Center

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…Means Additional Electric Demand and New Generation Needs

Increased Electric Demands

MW

Source: ERCOT

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Overview of Proposed Expansion (Units 3 & 4)

1700 MW each unit; 3400 MW total

Uses existing Comanche Peak site and infrastructure

Comanche Peak Nuclear Power Company – Joint venture between Luminant and Mitsubishi Heavy Industries

Attractive, emissions-free growth opportunity

ProposedExisting

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Benefits of Potential Expansion

Safe Operations: Strong history of safe operations

Clean-Air Energy: Zero greenhouse gas emissions (existing main units)

Dependable Power: High annual availability factors

Advanced Technology: Improved nuclear design

Ratepayer Certainty: Owners pay for construction – not ratepayers

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Future Economic Benefits of Proposed Expansion (Perryman Group)

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$22 billion in Texas Economic Impact: Including increased retail sales, personal income and gross state product. This would be the largest economic development project in state history.

Thousands of New Jobs: In addition to thousands of construction jobs, the new units would create about 1,000 new, on-site jobs. With the economic development multiplier, this is expected to create a total of 6,200 Texas jobs.

Increased State Revenue: State tax revenue is projected to increase by more than $490 million during development and construction – by more than $30 million annually once the plant is operational.

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Potential Construction of Comanche Peak 3 & 4 (Especially for Engineers)

> 5 million Cubic yards of earth to be moved

90,000 Tons of rebar

~ 1 million Yards of concrete to be poured

> 12 million Feet of cable

> 30 million Construction man-hours to complete

> 40,000 Tons of structural steel

~ 8 million Square feet of formwork

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Project Milestones

2006 Announced Potential Expansion Plans

2007 Selected Mitsubishi US-APWR Design APWR: Advanced Pressurized Water Reactor

2008 Submitted License Application to Nuclear Regulatory Commission

2010 Draft Environmental Impact Study

2011 NRC Safety Evaluation Report Development

2012 Additional NRC Review

2013 Possible License Issued

2013+ Decision About Whether to Build

2019–2020 Earliest Possible Time New Units Operational

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Nuclear Regulatory Commission Licensing process

Federal Loan Guarantee process

www.ExpandComanchePeak.com

Looking Forward

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Questions