## Brandon Shores Power Plant

One of the Cleanest Coal - fired Power Plants in the Country

Paul Allen Senior Vice President, Corporate Affairs Chief Environmental Officer

### Constellation Energy Overview

Constellation Generation Group

• Approximately 12,000 megawatts of owned, low cost, efficient generating capacity throughout the United States Constellation NewEnergy

• Leading supplier of innovative energy products and solutions to more than 30,000 wholesale and retail electric and natural gas customers in competitive markets across the country Baltimore Gas and Electric

• Transmission and distribution utility for more than 1.2 million electricity customers and 640,000 natural gas customers in Central Maryland 2 Generation: Generation Group Transmission: BGE Distribution: BGE Retail Competitive Supply: NewEnergy Wholesale Competitive Supply: NewEnergy

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### Brandon Shores

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### Brandon Shores Plant

• Two 640 net MW pulverized coal units

• Unit 1

– 26 years & Unit 2
- 19 years in Operation

– Drum Type Boilers operated at 2600 psi

 produces 4.4 Million lbs/hr of steam

– Highly Efficient Turbine
- Generator

– Uses 3.5 M tons of coal each year

 Rec’d by barge, pulverized

– Produce 6
- 8.5 Million MWs annually

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### Designed with the Environment in Mind

• Units circulating water utilizes cooling towers to minimize heat load on the Patapsco River

• Hot Side Precipitators remove 99.4% flyash

• Partnership with STI beneficial re
- use of 85% flyash

– Over 2 Million tons utilized in concrete



### • Low NOx burners, Over
- fired air

• Selective Catalytic Reaction (SCR)

– 90% NOx reduction

– Urea supply converted to ammonia for community safety



### • 30
- 60M gal of plant wastewater recycled each year

• Sedimentation & Erosion control ponds to minimize stormwater run off 5

### AQCS Flow Diagram

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PJFF Lime/PAC

### Air Quality Control System (AQCS) Project

• Schedule:

– 2006
- 2007: Studies on Control System Technology and initial engineering

– June 2007:Groundbreaking on AQCS

– September 2009: Construction complete

– November 2009: Unit 1 AQCS in service

– February 2010: Unit 2 AQCS in service

– July 2010: Wastewater system functional



### • Cost: $885 Million of a $1B commitment



### • Peak of 1,385 personnel on site

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## Brandon Shores AQCS
 Reduced SO 2 

### emissions by 95%  Mercury emissions are expected to be reduced by 90%

8The preconstruction and construction process moved forward smoothly because Constellation anticipated stricter federal

regulations and prepared accordingly Groundbreaking June 2007

Completed in September of 2009 26 months CONSTRUCTION PROCESS

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### Conceptualization of the project prior to the

passage of Maryland’s Healthy Air 

### Act (HAA) in April 2006

• Engineering, design, contracting, procurement, planning, and layout commenced while the regulations were being finalized

• Total time from the initial planning to the completion of construction was under four years (January 2006 through September 2009)

• Constellation started the design and permitting process prior to regulations being final

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### Pre - engineering steps should be taken now

– Costs associated with this pre
- engineering are not onerous, and prudent generators can expend these funds as part of developing an integrated environmental compliance strategy.

– This advance planning will also allow companies to better control costs and establish a cost effective schedule for constructing and installing any necessary control technologies.



### • Thus, while some companies are now suggesting there will be widespread need for additional time, 

### many of those requests will be unnecessary if companies can begin now to prepare for compliance.

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## Significant Economic Benefits for the Region

• Constellation's total investment was $885 million



### • At peak construction, 1,385 personnel on site at one time

– skilled craft and construction workers including boilermakers, steamfitters, pipefitters, operating engineers, millwrights, ironworkers, electricians and master electricians, as well as carpenters, teamsters, and laborers. 12

### 1600 job - years to build the AQCS

• Outstanding safety performance



### • 4.3 million man hours

• worked closely with the Maryland and DC 

### building trades and other unions

• does not reflect the associated manufacturing jobs

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### AQCS Project Combined Construction Labor Hours

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### Economic Benefits of the Manufacturing Jobs



### • The manufacturers of the cranes and vehicles 

### deployed on site

• Manufacturers of the many large and small 

### components ranging from booster fans, pumps and pump motors, to ball mills, 

### electronics, wiring, steel, concrete, and specialty tiles for the flue gas stack • Thousands of individuals to make these goods and operate the companies that form the supply chain for this kind of infrastructure

15• Empirical evidence of man - hours hired and paid;

• Emissions measured and lowered;

• Megawatts successfully produced and bid into the markets. It is this experience that give us the confidence that we our sister companies in the electric power industry can continue to deliver affordable electricity with the great reliability all consumers depend upon, while also meeting the air quality requirements set forth in the Clean Air Act


### .

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### Constellation’s Coal Fleet — Age and Controls

Control investments already incurred by Constellation’s coal fleet

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## Brandon Shores Power Plant

One of the Cleanest Coal - fired Power Plants in the Country

Paul Allen Senior Vice President, Corporate Affairs Chief Environmental Officer
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