the risks, they just keep on coming · 1 the risks, they just keep on coming ( impacts of...
TRANSCRIPT
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The Risks, They JustKeep On Coming
( Impacts of Environmental Bills in Congress )
GAMS Anniversary SeminarSeptember 19, 2003
Lloyd R. Kelly Vice President & Partner
Hill & Associates, Inc.(410) 263-6616 ext.104 / [email protected]
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HAPPY BIRTHDAY, ALEX
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Order of Presentation
1. How Our Models Work
2. Results of Modeling Current Bills In Congress
3. Discussion of the Risk Implications
4. Conclusions
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International CoalTrade Model
National Power Model™• Dispatch Economics• 90+ Control Areas
• Seasonal/TOD Prices, Flow & Gen.
DemandModel
GDPWeatherElectric Intensity
Transmission• Bi-Directional Simultaneous Flows• Seasonal Limits• Time-of-Day Rates
Regional Emission Limits• SO2, CO2, NOx
GenerationDatabase(all units)
GenerationCost Supply
Models
Hill and Associates, Inc.Electric Generation, Coal and Emissions Forecasting System
Utility FuelEconomics Model
• Fuel Switching• Clean-up Equip Choices
• Allowance TradingStrategies for• SO2• NOx• Particulates
Demand• Industrial• Commercial• Residential
GenerationDatabase
(coal units)Coal Supply Curves• Cash Cost by Mine • All Regions• By Coal Type
• New Build• Gas & Oil
Forecast
Coal Plant Costs&
EmissionsForecast
Plant/Area by TOD• Generation• Power Flows• Marginal Prices• Emissions
• Unit Info• Transp. Rates• Compliance
Costs
Coal Plant Energy Demand
SeasonalDispatch Costs,Emission Rates
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Three Factors Differentiate Us
• Our Coal Mining Cost Curves By Detailed Type of Coal
• The Feedback Loop With Dispatch, Coal Choice and Equipment Decisions Co-Dependent
• Simultaneous Interplay of Pollutant Limits
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Emission Actual 1999 NAAQS Clear Skies Initiative Sen. Carper'sAs Introduced in Congress "CAP 2002"
SO2 12.0 million tons 4.35 mm in '10 4.5 mm in '10 4.5 mm in '083.0 mm in '18 3.5 mm in '12
2.25 mm in '15NOx 7.1 million tons OTC Stepdown '03 2.1 mm in '08 1.7 mm in '12
21-State SIP Call '05 (1.582 mm East/0.538 mm West)1.7 mm in '18 (1.162 mm East/0.538 mm West)
Mercury 48.6 tons None 26 tons in '10 24 tons in '0815 tons in '18 5-16 tons in '12 (EPA set cap) 10 tons (H&A)
CO2 2.19 billion tons None None ~2.6 billion in '08 (2005 levels)~2.3 billion in '12 (2001 levels)
Multi-Emission Limits
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Last Year’s OutlookTotal U.S. Steam Coal
Including "Snapshot" Results
2.81 Gas (4.13)CO2
3.31 Gas (4.86)
3.81 Gas (5.60)4.31 Gas (6.33)4.81 Gas (7.06)
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NAQ BUS BNHCO2 Snapshot Gas Price Sens.
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This Year’s StudyTotal U.S. Coal Production
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NAQ SKY CAP Gas Price Sens.
$3.80 Gas
$2.80 Gas
$2.30 Gas
$4.30 Gas
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Different Types of Risk for Coal
• The Risk of the Carper Bill Being Passed (Or Any Other Form of Fixed CO2 Limits)
• The (Mercury + Gas Price) Risk– More Insidious (Looks OK from One Angle)– Coal Tonnage Alone Doesn’t Tell Whole Story
• Risks Not Reflected In Our Modeling
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CO2 Impact: It Ain’t Rocket Science• Starting Point: 3.904 Billion MWH
• If Grows 2.5%/yr for 25 Years = 7.238 Bln
• Assume 20% Is Hydro, Relicensed Nuc.s, etc (Remaining 80% Is Fossil-Fired = 5.790 Bln)
• Even If ALL Fossil-Fired Is Natural Gas, Result is CO2 Emission of 2.29 Billion Tons (vs Carper Bill Limit of 2.3 Bln – No Coal!)
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CO2 Allowance Prices$/Ton
$0.00
$100.00
$200.00
$300.00
$400.00
$500.00
$600.00
$700.00
$800.00
$900.00
$1,000.00
2003
2004
2005
2006
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2010
2011
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2013
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2015
2016
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2018
2019
2020
2021
2022
$/T
on
NAQ SKY CAP
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Current Global Mercury Emissions
• Total of Natural, Anthropogenic & Oceanic = 5500 tons
• U.S. Anthropogenic = 158 tons (2-3%)
• U.S. Power Plants = 48.6 tons (<1%)
• Geologists’ Anecdote: 1 Volcano Erupting…
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Measurement of Hg Emissions
• Dispute Over Whether They Can Be (And Are Being) Measured Accurately
• SO2 and NOx Range 2-12 million tons/year
• Hg : 50 tons/yr (<1mm, <1k, <100 )
• SO2 and NOx in Coal: lb./million Btu
• Hg in Coal: lb./trillion Btu (i.e., one-millionth the level of other pollutants)
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But Isn’t Mercury Poisoning Especially Bad?
• State of Hawaii – Continuous Simmering Volcanic Emissions + Occasional Eruptions … Why don’t we hear about a lot of mercury deaths there ?
• EPA Administrator Browner’s Official Basis: “There is a ‘plausible link’ between man-caused emissions of mercury and the possible bioaccumulation in the food chain and the possibility that the level could become high enough to adversely affect the health of women of childbearing age and young children.”
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Mercury Impact:Highly Volatile w/ Gas Prices
• Unlike CO2 This Is Economic Trade-Off
– A Brand-New Gas-Fired Combined Cycle Plant Simply Wins The Dispatch Competition vsMany Coal-Fired Plants
– The Balance Point Changes, Obviously, With Natural Gas Price
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Hg-Surviving Coal vs Gas Price
800
900
1,000
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1,200
1,300
2.00 2.50 3.00 3.50 4.00 4.50Gas Price ($/mmBtu)
Mill
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2003 NAQ Case
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Dis
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2015 SKY Case
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2015 SKY Sensitivity, GAS -$100
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2003 NAQ Case
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2015 SKY Case
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2015 SKY Sensitivity, GAS -$100
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What’s The Point Here On Mercury?
• Don’t Focus As Much On The Single “Correct” Answer As On The RISK!
– If Supply/Demand Balance For Natural Gas Shifts (Drilling, LNG, Trans-AK and/or Trans-Canada Pipeline, etc), Then Much Of Coal Industry Gets Killed Under Hg Limits
– Remember, U.S. Utilities’ Hg Is Less Than 1% Of The Global Atmospheric Load !!!
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But Coal Tonnage AloneDoesn’t Tell The Whole Story
• Mercury Allowance Price of About $150,000 per lb. X 52,000 lb = $7.8 bln
• In Fact, For 2010:– NAQ Sum (Mwh * Disp_Cost) = $92 bln– SKY Sum (Mwh * Disp_Cost) = $78 bln
( $14 billion per year extra cost to generate )
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Other Risks Not Shown ByOur Modeling
• We Traditionally Choose To Use Identical Electric Demand Across Scenarios (i.e., No Price Elasticity of Electric Demand)– Utility Generation Would Suffer At These Levels– U.S. Economy Would Get A Huge “Hit”
• Our Models Are Currently Set Up To Assume Any Gas Infrastructure Needed Would Arrive– But Carper Case (w/ CO2Lim.) Goes To 42 TCF !
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CONCLUSIONS
• Our Models Aren’t Perfect, But We Are Probably Getting Closer Than Many Others (especially Government analyses)
• The Threat Is Real! (and Risk Affects Capital Availability)
• Key Decision-Makers Are Starting To Realize This May Be An Unacceptable Risk
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BACKUP SLIDES
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Some Mercury Technology• 3 Forms of Mercury (Hg)
– Elemental (gas at boiler temperatures) – Hg o
– Ionic (gas) – Hg ++
– Solid Particles (Predominantly HgCl2)
• 2 Forms of Capture– Gaseous Hg adsorbed onto porous particles (PAC), then
collected with ESP’s or Bag Houses (PM collection)– The predominant Hg solid compounds are soluble in
wet scrubber solutions & captured by wet FGD
• Elemental Hg is hardest to capture, but can be oxidized to Ionic (belief that SCR promotes this)– PRB coal high in elemental form
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1.0 lb Hg Hg++
(Ionic Gas)
0.10 lb Hg
0.60 lb Hg
0.120 lb Hg
Hg°(Elemental Gas) 0.30 lb Hg
(or, 88.0%Removal)
Eastern Bituminous Coal – Mercury Modeling( 1.0 lb Hg Basis )
HgCl2 (Solid)
Max.CleanupEquip.
(Scrub,SCR &PAC )
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1.0 lb Hg Hg++
(Ionic Gas)
0.10 lb Hg
0.15 lb Hg
0.292 lb Hg
Hg°(Elemental Gas) 0.75 lb Hg
(or, 70.8%Removal)
PRB Coal – Mercury Modeling( 1.0 lb Hg Basis )
HgCl2 (Solid)
Max.CleanupEquip.
(Scrub,SCR &PAC )
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Coal Basins Losing/Gaining Tonnage via Mercury Limits
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h C
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$/To
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B a s e Y r + 1 5 B a s e Y r + 1 0 B a s e Y r + 5 B a s e Y r
Cost Curve Movement Over Time
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Powder River Basin Coal Production
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Central Appalachia Coal Production
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Illinois Basin Coal Production
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Colorado, Utah, New Mexico Coal Production
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Northern Appalachia Coal Production
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