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Clean Coal Technology

Current Progress, Future Promise

National Mining Association

101 Constitution Avenue, NW

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202/463-2600 | www.nma.org

Last updated: March 2003

p h o t o s :   D O E / N R E L ,   N E T L

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1

Coal

 is vital to present and future U.S. economic and 

energy security — it currently 

provides more than half of 

the nation’s electricity generation

and will continue  as  the 

largest single source of electricity supply through 2020 and 
beyond (source: Annual Energy Outlook 2002, EIA). 

Clean coal technologies

 

(CCT) — the products of research 

and development conducted over the past 20 years — 

have 

resulted in more than 20 new, lower-cost, more efficient 
and environmentally compatible technologies

 

for electric 

utilities, steel mills, cement plants and other industries 
(source: U.S. DOE, Office of Fossil Energy).

CCT helped make it possible for U.S. utilities to meet more 
stringent Clean Air Act requirements

  while continuing to 

utilize America’s most plentiful domestic energy resource 
— coal.

The original Clean Coal Technology Program, which began 
in 1986, focused on commercializing processes that helped 
reduce sulfur dioxide and nitrogen oxide emissions and 
demonstrating more efficient and environmentally  friendly 
alternatives to traditional  pulverized coal  boilers.  

New 

programs — such as the Clean Coal Power Initiative 
(CCPI) — are essential for building on the progress of 
the original CCT Program, finding solutions for reducing 
trace emissions of mercury; reducing or eliminating carbon 
dioxide emissions; and increasing fuel efficiencies.  

Over 

the longer term, research will be directed toward developing 
coal-based hydrogen fuels.  If coupled with sequestration, 
this will allow greater use of coal with zero emissions.

HIGHLIGHTS

Clean Coal Technologies 

provide abundant, 

cleaner electric power 

at less cost.

5000

0

1000

2000

3000

4000

2002p

2005

2010

2015

2020

Projected Electricity Supply by Generators, 2002-25

b

illi

o

n KwH

Total

Coal

source: U.S. Energy Information Administration, Annual Energy 
Outlook 2003, Table 8. p=projection

2025

6000

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2

WHAT ARE 
CLEAN COAL 
TECHNOLOGIES?

New, coal-based technological innovations are environmentally superior 
and more operationally efficient than technologies in common use today.  
In general, they fall into the following categories:

C o m b u s t i o n

P o s t - C o m b u s t i o n

C o n v e r s i o n

Combining coal with other 

substances in the  boiler  to 

improve efficiency and remove 

impurities.  An example would be 

fluidized-bed combustion, where

limestone  or  dolomite  are  added 

during the combustion process to

mitigate SO

2

 formation.

Using “scrubbers” (flue gas 

desulfurization), chemical cleaning 

or precipitators to remove large 

quantities of sulfur, other impurities 

and particulate matter (dust and 

ash) from emissions before they 

are released into the atmosphere.

Using heat and pressure to convert 

coal into a gas or liquid that can be 

further refined and used cleanly.

An example would be Integrated 

Gasification Combined Cycle, and 

other  gasification and liquefaction 

technologies. 

Basic Fluidized-Bed Combustion

Flue Gas Desulfurization

Integrated Gasification Combined Cycle

I l l u s t r a t i o n s :   U . S .   D e p a r t m e n t   o f   E n e r g y,  
C l e a n   C o a l   Te c h n o l o g y   C o m p e n d i u m ,  
w w w. l a n l . g o v / p r o j e c t s / c c t c

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3

CLEAN COAL TECHNOLOGY 
PROGRAM – HISTORY

Projects were selected and technology 

d e m o n s t r a t i o n s   c o n d u c t e d   b e t w e e n  

1986-93 — a jointly  funded effort by 

government and industry to demonstrate

and commercialize new, lower cost options

for controlling emissions of sulfur dioxide 

(SO

2

), nitrogen oxides (NOx) at coal-

based power plants, as well as to improve

power plant performance and efficiencies.

The program resulted in 38 pioneering 

projects in 18 states that eventually 

produced 22 commercial successes 

(defined by DOE as resulting in domestic 

or international sale of the technology,

or the technology continuing to operate 

economically at the plant site).

By law, private industry is required to fund 

at least 50% of each project — the reality:

  

industry provided two-thirds of the funding 

— $3.5 billion of a total of $5.3 billion.

Private Indu

Government

4%

$3.5 billion

$1.8 billion

Funding of Original Clean Coal Technology Program

source: U.S. Department of Energy, Office of Fossil Energy, http://www.fe.doe.gov

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4

CLEAN COAL SCORECARD

Project

Company

Location

Gas Suspension Absorption

AirPol

W. Paducah, KY

Confined Zone Dispersion

Bechtel

Seward, PA

LIFAC Sorbent Injection

LIFAC

Richmond, IN

Adv. Flue Gas Desulfurization

Pure Air

Chesterton, IN

CT-121 Flue Gas Scrubber

So. Co. Services

Newnan, GA

NOx Control - Wall-Fired

So. Co. Services

Coosa, GA

Coal Reburning

B&W Co.

Cassville, WI

Low-NOx Cell Burner

B&W Co.

Aberdeen, OH

Gas Reburning/Low-NOx Burn.

EERC

Denver, CO

Micronized Coal Reburning

NYSEG

Lansing, NY

Selective Catalytic Reduction

So. Co. Services

Pensacola, FL

NOx Control - T-Fired

So. Co. Services

Lynn Haven, FL

SNOX Flue Gas Cleaning

ABB

Niles, OH

LIMB SO

2

/NOx Control

B&W Co.

Lorain, OH

SOx-NOx-ROx Box

B&W Co.

Dilles Bottom, OH

Gas Reburning/Sorbent Inj.

EERC

Two sites - IL

Milliken Clean Coal Project

NYSEG

Lansing, NY

Dry NOx/SOx Control Sys.

Pub. Service CO

Denver, CO

McIntosh PFBC Project (4A)

City of Lakeland

Lakeland, FL

McIntosh PFBC Project (4B)

City of Lakeland

Lakeland, FL

JEA Fluidized Bed Project

JEA

Jacksonville, FL

Tidd PFBC Project

Ohio Power Co.

Brilliant, OH

Nucla CFB Project

Tri-State

Nucla, CO

Kentucky Pioneer Project

Kentucky Pioneer

Trapp, KY

Pinon Pine Power Project

Sierra Pacific

Reno, NV

Tampa Electric IGCC Project

Tampa Electric

Mulberry, FL

Wabash River Repowering

Dynegy/PSI

W. Terre Haute, IN

Clean Coal Diesel

AD Little

Fairbanks, AK

Healy Clean Coal Project

AIDEA

Healy, AK

Liquid Phase Methanol

Air Products

Kingsport, TN

Adv. Coal Conversion

Western Syncoal

Colstrip, MT

Coal Quality Expert

CQ Inc. & ABB

Multiple Sites

ENCOAL Mild Gasification

ENCOAL Corp.

Gilette, WY

Integrated Coal/Ore Reduction

CPICOR

Vineyard, UT

Pulse Combustor

MTCI

Baltimore, MD

Blast Furnace Injection Sys.

Bethlehem Steel

Burns Harbor, IN

Cyclone Combustor

Coal Tech Corp.

Williamsport, PA

Cement Kiln Scrubber

Passamaquoddy

Thomaston, ME

Commercial Successes to Date

(Domestic or international sales made, or technology 
continues to operate commercially at plant site)

1986-93 Clean Coal Technology 
Project Selections

38 Projects – 18 States
$1.8 Billion – Federal Government
$3.5 Billion – Private Industry/States
$5.3 Billion – Total Cost

for more information, visit www.lanl.gov/projects/cctc/factsheets/fs_loc.html

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MAJOR TECHNOLOGICAL 
BENEFITS OF CCTP

Technology

Impact

Low Nitrogen Oxide (NOx)
Burners

•  Now on 75 percent of U.S. coal-based power plants.

•  1/2-to-1/10th the cost of older systems.

•  Helped utilities comply with more stringent January 2000 Clean Air Act NOx emission 

requirements.

•  Between 1980-2000, NOx emissions from coal power plants declined 56 percent, 

measured by pounds of emissions per kilowatt hour — low NOx burners have played an 
increasing role in this success story.

Selective Catalytic Reduction
(SCR)

•  Achieves NOx reductions of 80-to-90 percent or more.

•  Technology today costs half what it did in the 1980s.

•  Systems are on order or under construction on 30 percent of the existing U.S. coal-

fired generating capacity.

Flue Gas Desulfurization (FGD)

•  FGD systems now cost one-third what they did in the 1970s.

•  More than 400 commercial units have been deployed.

•  SO2 emissions from coal-based power plants declined 61 percent between 1980-2000 

(based on lbs. of emissions per kWh) — while coal use by utilities rose 74 percent over 
the same period.  FGD systems have played an important role.

Fluidized Bed Combustion (FBC)

•  Now over 170 operating FBC units in the U.S. and 400 worldwide.

•  Commercialized — more than $6 billion in domestic sales and nearly $3 billion 

in overseas sales have resulted from U.S. public and private investment in FBC 
technology research, development and demonstration.

•  Removes SO2, NOx inside the boiler — no additional controls necessary.

Integrated Gasification Combined
Cycle (IGCC)

•  Over 1,500 megawatts of coal-based generation operating today; another 1,900 

megawatts are gasifying refinery wastes; another 2,200 megawatts are in design.

•  16,500 MWw (megawatt equivalent) of IGCC is expected to be operating in the United 

States by 2020.

source: U.S. Department of Energy, Office of Fossil Energy

for more information, visit www.fe.gov/coal_power/cct/

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ENVIRONMENTAL BENEFITS 
DURING THE CCTP ERA

Year

Coal Use for Electricity Generation

(Million Short Tons)

Coal NOx Emissions

(Pounds of Emissions per MWh)

Coal SO

2

 Emissions

(Pounds of Emissions per MWh)

1980

569

10.54

27.67

1985

694

7.48

22.30

1990

781

7.09

19.13

1991

784

6.99

18.97

1992

795

6.88

18.29

1993

832

6.80

17.19

1994

838

6.66

16.93

1995

850

6.53

13.58

1996

897

6.24

13.64

1997

921

6.12

13.67

1998

937

5.80

13.31

1999

941

5.15

12.42

2000

986

4.61

10.78

2001

967

4.38

10.46

COAL 

USE 

UP

70%

COAL 

NOx 

EMITTED

DOWN

58%

COAL 

SO

2

EMITTED

DOWN

62%

Note:  Figures are rounded.  Total emissions reductions are due to several factors, which include increased commercialization and deployment of clean coal technologies.  
(Sources:  Energy Information Administration, Environmental Protection Agency, National Air Quality and Emissions Trends Report, 2001.)

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SO2 Emission Rate from

Electricity Generation (lbs/MWh)

NOx Emission Rate from

Electricity Generation (lbs/MWh)

CCT IS IMPORTANT, 
NOW AND IN THE FUTURE

Electricity demand will increase 53.4 percent over the next 25 years.

Meeting this rising growth rate will require the construction of the equivalent of more than 1,200 new power 
plants of 300 megawatts each — the equivalent of about 65 plants each year.

Coal will remain the largest single source of electricity — accounting for 51 percent of power generation in 
2025. 

(source: Table 8, Annual Energy Outlook 2003)

Clean coal technologies will help meet these needs, plus continue the decline in SO

2

and NOx emissions 

already underway.

EQUALLY IMPORTANT … 

CCT will help utilities 
comply with more stringent 
environmental standards 
and help address climate 
change concerns in the 
years ahead.

10.5

6.6

4.4

3.0

2001

2025p

2001

2025p

p = projection.  These data include emissions from coal and other fuel sources.  Estimates
assume no changes to current Clean Air Act requirements.  Source: Annual Energy Outlook
2003, Reference Case, Energy Information Administration.

The recently announced FutureGen project takes Clean Coal further.  FutureGen, a plant to produce 
hydrogen from coal and sequester emissions, will be the world’s first zero emission coal-fired plant.

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Develop a zero emission coal 

based hydrogren production facility 

incorporating carbon sequestration.

FUTURE CCT FOCUS AREAS

Meet increasingly stringent environmental

challenges and expectations that were

not part of the original CCT program

— especially in the areas of mercury 

control and carbon sequestration — while 

continuing reductions in SO2 and NOx.

How much coal does the U.S. have?

U.S. recoverable coal reserves are 274 billion tons (according to U.S. EIA), 
enough to last 280 years at present rates of use

Did you know…

Coal represents 95 percent of U.S. fossil fuel reserves?

Nine out of every 10 tons of coal is used to make electricity?

The energy contained in 2001 U.S. coal production exceeded the 
combined energy of U.S. oil imports and domestic oil production?

Provide continually improving 

efficiencies, cost benefits and 

processes that take advantage of 

coal’s diversity as a liquid, gas or 

solid energy resource.

Allow the continued use of plentiful 

domestic coal resources to meet 

growing electricity demand.

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Ozone

By May 2004, 

EPA regulations to 

reduce the regional 

transport of ozone

will require utilities 

in 20 Eastern states 

and the District 

of Columbia to

sharply reduce NOx 

emissions below 

levels specified in 

the 1990 Clean Air 

Act Amendments.

Enforcement

In November 1999, 

EPA filed lawsuits 

against seven 

utilities and issued an 

administrative order

against an eighth, 

charging violation of 

New Source Review 

(NSR) requirements.  

All the civil actions 

seek retrofit of state-

of-the-art control

technologies on more 

than 10 percent of 

total U.S. coal-based 

capacity.

Mercury

EPA will promulgate 

new mercury control

regulations for 

coal-based power 

plants by December 

2004.  Currently, the 

removal of mercury

from commercial 

technology varies 

by coal type and 

is highly variably 

within each type, 

making compliance 

problematic with 

regulatory options 

under consideration.

Clear Skies Act

Proposal would 

reduce and cap NOx, 

SO

2

 and mercury 

emissions from

power generators 

at 70% below 1990 

Clean Air Act levels 

by 2018.  Specific 

technologies will need 

to be developed and 

commercialized to 

achieve reductions 

of multiple emissions 

and pollutants.

Particulate Matter

Promulgated in 

1997, revised 

National Ambient 

Air Quality 

Standards (NAAQS)

are intended to 

reduce the levels of 

airborne particulate 

matter — including 

fine particles, 

requiring further 

reductions in these 

emissions.

FUTURE CHALLENGES — 
TECHNOLOGY CAN PROVIDE SOLUTIONS

The bottom line: Clean Coal Technology development will be more essential 
than ever in meeting new long-term Clean Air Act requirements while 
providing cost savings to the American consumer.

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Development 

and demonstration of

a zero emission coal based power plant 

through the “Integrated Squestration 

and Hydrogen Research Initiative,” the 

FutureGen project.

Sequestration — CO2

capture and storage.  

Currently, only “carbon 

sinks” (forests, oceans, 

etc.) have been shown to 

be effective.

Mineralization 

(injecting CO2 into 

rocks, which absorb it) 

and reuse.

Development and 

demonstration of

combustion plant and 

gasification plant 

separation.

Improvements in 

power plant operating 

efficiencies.

CLIMATE CHANGE: CARBON DIOXIDE 
MITIGATION & MANAGEMENT

It is important to address climate change 

with technology, while preserving 

economic growth.  Possible options 

include:

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Improved operating efficiencies of new 
power generation technologies from the 
Clean Coal Technology program are 30-to-
40% higher than a conventional coal plant — 
this translates to a nearly equal percentage 
reduction in carbon dioxide emissions. 

(source: U.S. Department of Energy)

MORE EFFICIENT POWER PLANTS 
HELP REDUCE CO

2

 EMISSIONS

Increased power generating 

efficiencies, in effect, mean

generating more megawatts 

of electricity from the same 

amount of fuel.  The result 

is lower power costs and 

reductions in greenhouse 

gas emissions. 

11

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CLEAN COAL TECHNOLOGY NEEDS 
CONTINUED FEDERAL SUPPORT

To continue the research 

momentum generated

by the original CCTP, 

which provided numerous 

technological innovations 

currently benefitting society.

To assure continued 

research, development and 

demonstration of a new 

generation of advanced 

technologies that are 

promising, but too high-risk to

be financed solely by private 

industry.

To allow America to take full 

advantage of its vast, 280-

year supply of coal resources 

to meet burgeoning

electricity demand and 

encourage economic growth,

while meeting more stringent 

environmental objectives.

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Efficiency improvements at existing power plants.

New computerized controls, improved burner designs, better 

emissions cleaning systems, higher performance turbines.

Advanced high efficiency combustion and gasification cycles.

Generating systems with increased operating temperature.

High efficiency fuel cells operating on synthetic gas.

Hydrogen production — a clean energy carrier — via gasification.

Prevention, reduction and then capture and/or storage of CO

2

 (sequestration).

Reduction of mercury emissions to required levels.

FOCUS AREAS FOR NEW 
TECHNOLOGY R&D

DOE/NREL

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MOVING FORWARD

Emphasis on coal utilization technology development 
must continue over the next decade.

Funding needs

$2 billion 

each from 

government (as 
contained in the 
“Clean Coal Power 
Initiative”) and 
industry.

$1 billion

 for 

the industry/
government 
FutureGen 
project.

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“Clean Coal Power Initiative (CCPI)” proposed by President Bush: $2 billion 
for CCT over 10 years

Both Senate and House included CCPI in bills passed in 107th Congress 
as well as investment and production tax incentives for advanced clean 
coal technologies – bills did not get out of conference.

CCPI and CCT incentive package still has strong bi-partisan support.  
Both will be included in stand-alone bills as well as in comprehensive 
energy legislation in the 108th Congress.

Fiscal year 2002 budget for DOE included $150 million for CCT research. 
This was combined with FY 2003 funding of $150 million for  a combined 
$300 million CCT solicitation.

On January 15, 2003, eight projects were awarded a total of $317 million dollars 
for CCPI’s first phase.  Industry will contribute over $1 billion – well beyond the 
50 percent cost share requirement.  Projects focus on reductions in mercury,
SO

2

and NOx; on increasing efficiency and reducing GHG emissions; and on 

using coal waste.

A $130 million budget request has been made for FY 2004.

POSITIVE INITIATIVES 
NEED SUPPORT

for more 

information, visit

www.nma.org

Support for the the Department of Energy’s FutureGen, a $1 billion venture to
build a prototype of the fossil fuel plant of the future that will combine coal-
based electricity with hydrogen production in a zero emission process.