NCCI Conference. Design and Operational Aspects. Hybrid Energy Center. David Leaf Manager Projects

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1 October 21, 2010 NCCI Conference Design and Operational Aspects of the Virginia City Hybrid Energy Center David Leaf Manager Projects 1 1

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3 July 2010 Aerial Photo 3 3

4 VCHEC Presentation Outline Safety Project Background Economic Impacts Project Schedule Environmental Aspects Design and Operation Construction Status 4 4

5 VCHEC Safety Project has worked over 6 million manhours without a lost time accident Project to Date - OSHA recordable rate of 1.23 injuries per 200,000 hours worked Year to Date OSHA recordable rate of 0.78 injuries per 200,000 hours worked CHSWMF has worked over one year without a recordable. 5 5

6 Virginia City Hybrid Energy Center- Part of Dominions Generation Expansion Strategy We ve achieved a mercury permit that, to our knowledge, is the most stringent mercury permit for a coal-fired power plant in the nation. - Cale Jaffe, Southern Environmental Law Center (Tricities News, September 3, 2009) 2130 workers on site more than 30% from Southwest Virginia Air permit upheld by Richmond Circuit Court Project more than 71 percent complete. Construction is 60% complete 6

7 SB 651 (2004) HB 3068/SB 1416 (2007) Virginia s legislative incentive for development of major coal-fired power stations in southwest Virginia responded to a growing need for energy. To ensure electric energy reliability and promote economic development, an investor-owned utility may petition the SCC for approval. Power station located in the coalfield region of Virginia that burns Virginia coal is in the public interest. Allows recovery of construction and associated infrastructure costs enhanced rate of return. Recovery through rates reduces investor risk. 7

8 VCHEC Economic Benefits 1800 new jobs during construction Adds upwards of $6 million in tax revenue each year Permanent employment of at least 75 plant operators - Annual payroll of over $4 million Creating an additional 350 local mining jobs Independent study by Virginia Tech found that the project would have an economic impact of more than $439 million annually. Most significant economic benefits will be after the plant begins operation. More than doubles the economic output of Wise County. 8 8

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10 Southwest Virginia Power Station CFB Clean Coal Technology Limestone injection, FGD, SNCR, Carbon Injection and fabric filters capture: - Sulfur dioxide - Nitrogen oxides - Particulate t matter -Mercury Coal Generator Steam Turbine Chimney Limestone Circulating Fluidized Bed Furnace (CFB) Heat Exchanger Selective Non-Catalytic Nitrogen Oxide Reduction System (SNCR) Fabric Filter Particulate Control Air Pre-Heater Fan 10 Air Ash Removal Dry Flue Gas Desulfurization System Ash Removal

11 VCHEC Environmental Control Equipment Air Emissions Control Equipment: CFB Boiler reduces SOX, and NOX Selective Noncatalytic NOX Reduction System (SNCR) Dry Scrubber for SOX reduction Activated Carbon Injection for Mercury Control Baghouse for Particulate Matter Control Misc. Baghouses on material handling systems Dust suppression system on coal pile Water wash systems for vehicles Barrier Fencing screening 11 Water discharge Control Equipment: Air cooled condensers significantly reduce water usage Extensive water recycle within plant water system Wastewater Clarifier to treat water for recycle or discharge Sedimentation Ponds for stormwater runoff Coal and limestone pile runoff pond ph treatment system 11

12 VCHEC Emissions Compared to Other Facilities SO2 NOx PM Hg Permit Ratio'd to VCHEC Ratio'd to VCHEC Ratio'd tovchec Ratio'd tovchec Combustion Technology MW Date MW Basis (tpy) MW Basis (tpy) MW Basis (tpy) MW Basis (tpy) 1960's PC Unit ,174 29, , 's PC Unit ,174 18,256 1, 's CFB Unit ,452 10, 's CFB Unit 585 6,726 5, JEA Jul-99 3,694 2, Seward Apr-01 16,635 4, NA Sandow (Unit 5) Sep-03 3,990 2, AES Puerto Rico Aug , NA Cleco Feb-06 3,841 1, NA Spurlock (Units 3 and 4) Jul-06 4,059 1, Cliffside (Unit 6) Jan-08 6,709 4, VCHEC Jun , NOTE 1 - JEA Northside has two coal/pet coke CFB's. Facility operates on 80% pet coke / 20% coal. NOTE 2 - Reliant Seward has two waste coal CFB's. NOTE 3 - Luminant Sandow 5 consists of two lignite-fired CFB's. NOTE 4 - AES Puerto Rico facility has two CFBs that operate on South American, low sulfur bituminous coal. NOTE 5 - Cleco has two CFBs that operate on pet coke and/or coal. NOTE 6 - Spurlock 3 and 4 are two CFBs that operate on coal and up to 10% TDF. NOTE 7 - Cliffside 6 is a PC boiler. Items in green identify permit limits lower than VCHEC 12

Reduces overall water consumption - Eliminates

13 VCHEC Water Usage Comparison The Power Station will utilize Air Cooled Condenser technology - Reduces overall water consumption - Eliminates evaporation of water into the atmosphere 13 13

14 SPX Air Cooled Condensor 60 fan system (5x12) 12 two speed fans / 48 single speed fans Designed to operate at 4.5 in 87 F Option selected for tube cleaning system 14

15 Waste Water Reuse System 15 15

16 CHSWMF Basic Facts 16 Site Design - GAI Consultants, Inc., Homestead, PA Location approximately 1 mile west of power block in valley - Curley Hollow Facility acres Lined area acres Storage capacity - 35 million cubic yards Facility will be permitted as an industrial solid waste landfill to receive fossil fuel combustion byproducts (FFPs) Max. ash production: 268 tons per hour 45,000 tons per week 2 million tons per year Haul 5 days/week, 20 10,000 tons/day Site life at Average ash disposal rate is approx years (actual site life will differ depending on coal used, plant 16 outages and beneficial reuse of fly ash)

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18 18 Major Component General Arrangement

19 Plant Design Parameters 19 Operating Conditions Fuel (Coal Only) Fuel 20% Heat Input) Limestone Hydrated Lime (93% CaOH 2 ) Brine Solution (NaCl) Input 393 t/hr 7677 BTU/lb 125 t/hr lb/hr 29 t/hr 7974 lb/hr 666 lb/hr Activated t Carbon 564 lb/hr Ammonia (19%) Water (St. Paul) Water (Recycled from CCB Storage) Auxiliary Load 345 gal/hr 494 gpm 383 gpm 81 MW Operating Conditions Gross MW (100%VWO) Output 668 Heat Rate 9973 (guarantee) BTU/kwh Ash (Performance Fuel) Ash (Worst Case Fuel) Waste Water* 193 t/hr 268 t/hr 0 gpm *For waste water to be this value, leachate water flows must match the recycled water value shown All values are based on Performance Fuel unless otherwise noted. All values are based on full plant load (2 boilers).

20 Plant Storage Capacities 20 Piles Bins/Tanks/Silo Coal 10 day 12 hrs Limestone 10 day 24 hrs Wood 10 day 45 min Hydrated Lime (93% CaOH 2 ) 5 days Ammonia (19%) 10 day 1430 lb/hr Start-Up Fuel Oil 550,000 gal Make Up Water Reclaim Water Tank Demin Tank Fly Ash Silos* Bed Ash Silo* 1,000,000 gal 1,000,000 gal 500, gal 72 hrs 72 hrs Activated Carbon 14 day 100 ton *Fly and Bed Ash Silos volumes designed for Performance Fuel ash rates

21 Fuel Specifications PERFORMANCE COAL - PROXIMATE ANALYSIS Min Max Performance Coal Volatile Matter, % Fixed Carbon, % Ash, % Moisture, % Sulfur, % Chlorine, ppm in dry solids Fluorine, ppm in as received solids Lead, ppm in as received solids Mercury, ppm in as received solids Thermal Energy HHV (Btu/lb) 6,794 8,717 7,677 Up to 20% wood fuel can be fired and maintain MCR. Wood Fuels Fuel Wood Potential Fuel Range Type Forest Residuals Design Basis Proximate Analysis (%W) As Rec d Dry As Rec'd As Rec'd Fixed Carbon Volatile Matter Ash Moisture TOTAL Heat Content BTU/#

22 22 COAL RECEIVING AND STORAGE

23 23 COAL STORAGE AND RECLAIMING

24 Material Handling Area #5 Coal Unloading & Storage 24

25 25 LIMESTONE STORAGE AND RECLAIM

26 26 WOOD WASTE STORAGE AND RECLAIM

27 27 Material Handling Area #5 Wood, Limestone & Coal Infeed

28 VCHEC Biomass Requirements Facility will be capable of utilizing up to 20% of its total heat input from wood chips. After the first 36 months of operation, the facility shall use at least 5% biomass per year. Starting the 5 th year of operation, biomass will be increased by 1% each year to no less than 10% for all subsequent years. Can request relief if market conditions result in significant ratepayer costs. 28

29 Conversion of Bremo Power Station As part of the Virginia City air permit, Dominion will convert its Bremo Power Station, an older, coal-fired power station in Central Virginia, to gas once Virginia City is operational. State Corporation Commission must approve conversion. This would significantly reduce emissions from Bremo. -- Would more than offset the mercury and nitrogen oxide emissions i from VCHEC -- Would offset significant portions of other emissions, including carbon dioxide 29 29

30 VCHEC Project Photos 30 December 2008 chimney shell complete 30

31 VCHEC C Project Photos 1/18/ April 2, 2009 September 2, 2010 January 1, March 3,

32 Steel going up 32 32

33 Air Cooled Condenser Structure 33 33

34 Project Photos Looking FO & Makeup Water Tanks & Looking Coal Unloading Pit 34 34

35 Project Photos Looking Steam DrumLift Boiler 11 & Looking STG Bridge Crane Lift

36 VCHEC Project Gantry Crane Setting 1/6/

37 VCHEC Project Curley Hollow Solid Waste Management Facility 37 September

38 Aerial View September

39 First HRA Module Placed 9/1/

40 Curley Hollow Liner Installation 40 40

41 Questions? 41 41

42 Generator Stator Delivery 42 Steam Turbine Generator Stator supplied by Toshiba Stator Manufactured in Japan, Shipped to Louisiana Barged from Port Allen to Knoxville via river system. Stator weight 795,869 #, Rig approximately 1.3 Million # 265 feet long (w/o tractors), 22 feet wide, 19 feet tall. Width expanded to 31 feet required for select structures. Toshiba responsible for Delivery 42

Over 45 bridges required evaluation One bridge required shoring One bridge required reinforcement 8

43 Generator Stator Delivery 43 Barnhart Crane and Rigging selected for heavy haul. Travel route over 176 miles from Knoxville, TN to Virginia City, VA Required permits from TN and VA Over 45 bridges required evaluation One bridge required shoring One bridge required reinforcement 8 structures required temporary jump bridges. Travel took 14 days, travelling only at night. Limited to 20,000# per axle in TN 43

44 Stator Delivery 44 44

45 Stator Delivery Rig at rest during day stop Installation of temporary jump bridge 45 45

46 Stator Installation 46 46

47 VCHEC Plant Design Parameters 47 Operating Conditions Fuel (Coal Only) Fuel 20% Heat Input) Input 408 t/hr 120 t/hr Limestone lb/hr 28 t/hr Hydrated Lime (93% CaOH 2 ) Brine (NaCl) Activated Carbon Ammonia (19%) Water (St. Paul) Water (Recycled from CCB Storage) Auxiliary Load 7974 lb/hr 590 lb/hr TBD 345 gal/hr 494 gpm 383 gpm 81 MW Operating Conditions Gross MW (100%VWO) Heat Rate (operating case) Ash (Performance Fuel) Ash (Worst Case Fuel) Waste Water* Output BTU/kwh 193 t/hr 276 t/hr 0 gpm *For waste water to be this value, leachate water flows must match the recycled water value shown All Values are based on Performance Fuel unless otherwise noted.

48 Actual Emissions Values in Air Permit Each Boiler (lb/mmbtu) Each Boiler (lb/hr) Filterable Particulate Matter (PM) Combined Total (tons/yr) 3-hour average day rolling average Total PM-10 (filterable & condensable) hour average Total PM-2.5 (filterable & condensable) hour average Sulfur Dioxide hour average hour average day rolling average lb/mwh (gross) Nitrogen Oxides (as NO 2 ) 1, day rolling average Carbon Monoxide 2, day rolling average Volatile Organic Compounds hour average Sulfuric Acid Mist (H 2 SO 4 ) hour average Hydrogen Fluoride hour average Hydrogen Chloride hour average Mercury (12-month rolling avg) lbs/mwhr 48

Stephen Nelson COO. Longview Power, LLC

Stephen Nelson COO. Longview Power, LLC Stephen Nelson COO 1 Longview Power, LLC Longview Power Overview 778 MW gross (700 MW net) coal fired plant located near Morgantown, WV New plant started operations in December 2011 while PJM coal fleet