Appendix 3. Gas Infrastructure Serving Generation in NYISO. Table of Contents

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1 Appendix 3. Gas Infrastructure Serving Generation in NYISO Table of Contents Algonquin Gas Transmission (Spectra Energy)... 2 Central New York Oil & Gas (Crestwood Midstream Partners)... 3 Dominion Transmission (Dominion Resources)... 4 Empire Pipeline (National Fuel Gas)... 6 Iroquois Gas Transmission System... 7 Millennium Pipeline (NiSource / National Grid / DTE Energy)... 9 National Fuel Gas Supply Corporation (National Fuel Gas Company) Tennessee Gas Pipeline (Kinder Morgan) Texas Eastern Transmission (Spectra Energy) Transcontinental Pipeline (Williams) North Country Pipeline (TransAlta) Central Hudson Gas & Electric (Fortis, Inc.) Consolidated Edison National Fuel Gas Distribution National Grid Orange & Rockland (Con Edison) St. Lawrence Gas (Enbridge) Elizabethtown Gas / Public Service Electric & Gas Data Sources: Pipeline capacities are taken from Peak Day Capacity reports filed with FERC Meter data is taken from the respective pipeline EBBs (see Exhibit 3 for URLs) - A3-1 -

2 Algonquin Gas Transmission (Spectra Energy) Capacity: 1,144 (Mahwah Mainline) Algonquin s route system cuts across downstate New York, but does not directly serve any generation across the New York Control Area. Algonquin also receives gas from Millennium at the Ramapo interconnection. Figure A3-1. Algonquin Facilities in New York Algonquin Iroquois Millennium Tennessee Transco Compressor Station Table A3-1. Algonquin Compressor Stations in NYISO (sorted West to East) Name Stony Point Southeast Location Stony Point, NY Southeast, NY - A3-2 -

3 Central New York Oil & Gas (Crestwood Midstream Partners) Capacity: 750 MDth/d at interconnection with Millennium The CNYO&G system can deliver gas into Millennium from the Stagecoach storage field or from Tennessee. Figure A3-2. Central New York Oil & Gas Facilities CNYO&G/Stagecoach Columbia Millennium Tennessee Transco Bluestone Laser - A3-3 -

4 Dominion Transmission (Dominion Resources) Capacity: 5,701 MMcf/d 1 Figure A3-3. Dominion Facilities in NYISO CNYO&G Columbia Dominion Empire Iroquois Millennium NFG Tennessee Bluestone Laser Compressor Station Interstate-Served Generator Table A3-2. NYISO Generators Directly Connected to Dominion Generator Capacity Meter Meter Name (MW) Number Allegany 67.0 RG&E - Allegany Batavia Sithe Energies (Lower Leroy-Seneca) Indeck Silver Springs 56.6 Indeck Energy (Barber Rd-Silver Spg) Represents peak day throughput during the heating season. 2 Batavia is directly connected to Dominion through a customer-owned 11.2-mile lateral. NYPSC Case No. 91-T A3-4 -

5 Table A3-3. Dominion Compressor Stations in NYISO (sorted West to East) Name State Line Borger Utica Brookman Corners Location Genesee, PA Ithaca, NY New Hartford, NY Minden, NY - A3-5 -

6 Empire Pipeline (National Fuel Gas) Capacity: 806 MDth/d (east from Chippewa) / 410 MDth/d (north from Pennsylvania) Empire is bi-directional, receiving gas into the southern end of the system at producer interconnections near the New York-Pennsylvania border and the interconnection with Millennium at Corning, and into the northwestern end of the system at the Chippewa interconnection with TransCanada. Figure A3-4. Empire Facilities CNYO&G Columbia Dominion Empire Millennium NFG Tennessee Compressor Station Table A3-4. Empire Compressor Stations in NYISO (sorted West to East) Name Oakfield Location Oakfield, NY - A3-6 -

7 Iroquois Gas Transmission System Capacity: 1,195 MDth/d (Waddington) / 1,350 MDth/d (Waddington + Brookfield) Iroquois is jointly owned by TransCanada Pipelines Limited (44.48%), Dominion Resources, Inc. (24.72%), National Grid (20.40%), New Jersey Resources Corporation (5.53%) and Iberdrola, USA (4.87%). Historically, the primary system receipt point is the interconnection with TransCanada at Waddington at the northern end of the system. Figure A3-5. Iroquois Facilities in New York Algonquin Columbia Dominion Iroquois Millennium Tennessee Bluestone Laser Compressor Station Interstate-Served Generator - A3-7 -

8 Table A3-5. NYISO Generators Directly Connected to Iroquois Generator Capacity Meter Meter Name (MW) Number Athens 1,323.0 Athens Northport 1,548.0 Northport Table A3-6. Iroquois Compressor Stations Serving NYISO (sorted North to South) Name Croghan Boonville Wright Dover Brookfield Milford Location Croghan, NY Boonville, NY Delanson, NY Dover, NY Brookfield, CT Milford, CT - A3-8 -

9 Millennium Pipeline (NiSource / National Grid / DTE Energy) Capacity: 675 MDth/d Millennium has bi-directional flow capability, currently primarily receiving gas from production and storage connections in central New York (Bluestone, Laser, CNYO&G / Stagecoach) for delivery east to Algonquin at Ramapo and west to Empire at Corning. Figure A3-6. Millennium Facilities Algonquin CNYO&G/Stagecoach Columbia Dominion Empire Iroquois Millennium NFG Tennessee Bluestone Laser Compressor Station Interstate-Served Generator Table A3-7. NYISO Generators Directly Connected to Millennium Capacity Meter Generator Meter Name (MW) Number Bowline 3 1,242.0 Bowline Table A3-8. Millennium Compressor Stations in NYISO (sorted West to East) Name Corning Hancock 4 Minisink Location Corning, NY Hancock, NY Millennium, NY 3 A 4.2-mile spur pipeline, Hudson Valley Gas Transmission, connects Millennium to Bowline. 4 The Hancock compressor station is currently under construction with an anticipated in-service date in spring A3-9 -

10 National Fuel Gas Supply Corporation (National Fuel Gas Company) Capacity:2,635 MDth/d 5 Figure A3-7. NFG Facilities in New York Columbia Dominion Empire Millennium NFG Tennessee Compressor Station Interstate-Served Generator Table A3-9. NYISO Generators Directly Connected to NFG Capacity Meter Generator Meter Name (MW) Number Indeck Olean 90.6 IESI - Indeck Olean INDECKOLEAN 5 Based on the 2012 peak day. - A3-10 -

11 Table A3-10. NFG Compressor Stations in NYISO (sorted West to East) Name Nashville Zoar Concord Limestone Porterville East Aurora Beech Hill Independence Tuscarora Location Nashville, NY Zoar, NY Concord, NY Limestone, NY Porterville, NY East Aurora, NY Beech Hill, NY Independence, NY Tuscarora, NY - A3-11 -

12 Tennessee Gas Pipeline (Kinder Morgan) Capacity: 1,191 MDth/d at Kentucky-Ohio border Figure A3-8. Tennessee Facilities in New York Algonquin CNYO&G/Stagecoach Columbia Dominion Empire Iroquois Millennium NFG Tennessee Transco Bluestone Laser Compressor Station Interstate-Served Generator Table A3-11. NYISO Generators Directly Connected to Tennessee Generator Capacity Meter Meter Name (MW) Number Bethlehem Sprague/TGP Bethlehem Sales Albany Empire EmpireGn/TGP Schodack Rensselaer Lockport Shell/TGP Harrison Co Gen Sales Nia Selkirk BP Energ/TGP Selkirk Sms Albany A3-12 -

13 Table A3-12. Tennessee Compressor Stations Serving NYISO (sorted West to East) Name Station 224 (north line) Station 307 (south line) Station 229 (north line) Station 230C (north spur) Station 313 (south line_ Station 233 (north line) Station 405A (cross line) Station 315 (south line) Station 237 (north line) Station 317 (south line) Station 319 (south line) Station 241 (north line) Station 321 (south line) Station 245 (north line) Station 323 (south line) Station 325 (south line) Station 249 (north line) Station 254 (north line) Location Clymer, NY Hamburg, NY Lockport Coudersport, PA Geneseo, NY Avoca, NY Wellsboro, PA Clifton Springa, NY Troy, PA Wyalusing, PA Syracuse, NY West Clifford, PA West Winfield, NY Lackawaxen, PA Libertyville, NJ Carlisle, NY Nassau, NY - A3-13 -

14 Texas Eastern Transmission (Spectra Energy) Capacity: Approximately 1,500 MDth/d into New York Facilities System 6 Texas Eastern delivers gas to downstate New York, including a lateral to Manhattan that was placed into service in November Figure A3-9. Texas Eastern Facilities in New York New York New Jersey New York New York Texas Eastern Transco 6 Includes both Staten Island and Manhattan delivery points. - A3-14 -

15 Transcontinental Pipeline (Williams) Capacity: Approximately 1,800 MDth/d into New York Facilities System Figure A3-10. Transco Facilities Serving NYISO Algonquin Columbia Iroquois Tennessee Texas Eastern Transco Compressor Station Direct Connect Generator Table A3-13. NYISO Generators Directly Connected to Transco Capacity Meter Generator Meter Name (MW) Number Bayonne BEC M6323 MP Table A3-14. Transco Compressor Stations Serving NYISO (sorted West to East) Name Station 207 Location Parlin, NJ 7 Located in New Jersey but electrically connected to NYISO Zone J (New York City). - A3-15 -

16 North Country Pipeline (TransAlta) Capacity: 105 MDth/d 8 The 22-mile North Country Pipeline imports gas from TransCanada at Napierville. Figure A3-11. North Country Facilities Iroquois North Country Intrastate-Served Generator Table A3-15. NYISO Generators Served by North Country Generator Capacity (MW) Saranac Source: NYPSC Declaratory Ruling in Case No. 92-M A3-16 -

17 Central Hudson Gas & Electric (Fortis, Inc.) Figure A3-12. Central Hudson Gas & Electric Service Territory Algonquin Columbia Dominion Iroquois Millennium Tennessee Citygate LDC-Served Generator CHG&E Danskammer Table A3-16. NYISO Generators Served by Central Hudson Gas & Electric Generator Capacity (MW) Coxsackie 21.6 Danskammer Roseton 1, A3-17 -

18 Table A3-17. Central Hudson Gas & Electric Citygate Meters Pipeline Meter Name Meter Number Algonquin Somers (Westchester 45 Iroquois Pleasant Valley Millennium Central Hudson Tennessee Cedar Hill New York A3-18 -

Consolidated Edison Figure A3-13. Con Edison Service Territory Algonquin Iroquois Millennium Tennessee Texas Eastern Transco Citygate LDC-Served Generator Con Edison Table A3-18.

19 Consolidated Edison Figure A3-13. Con Edison Service Territory Algonquin Iroquois Millennium Tennessee Texas Eastern Transco Citygate LDC-Served Generator Con Edison Table A3-18. NYISO Generators Served by Con Edison Generator Capacity (MW) 59th Street 17.1 USPowerGen Astoria Astoria East Energy Astoria Energy East River Harlem River 80.0 Hellgate 80.0 NRG Astoria NYPA Astoria Ravenswood Vernon Boulevard A3-19 -

20 Table A3-19. Con Edison Citygate Meters Pipeline Meter Name Meter Number Algonquin Peekskill (Westchester,NY) 41 Algonquin Cortlandt (Westchester,NY) 47 Algonquin Yorktown (Westchester,NY) 48 Algonquin North Somers (Westchester,NY) 811 Iroquois Hunts Point Tennessee Con Ed/TGP White Plains NY Westches Tennessee Con Ed/TGP Rye NY Westchester Tennessee Con Ed/TGP Knollwood NY Westchester Texas Eastern ConEd-Manhattan Delivery Transco Consolidated Edison DRAFT - A3-20 -

21 National Fuel Gas Distribution Figure A3-14. NFG Distribution Service Territory in New York Columbia Dominion Empire NFG Tennessee Citygate LDC-Served Generator NFG Distribution Table A3-20. NYISO Generators Served by NFG Distribution Generator Capacity (MW) Fortistar North Tonawanda 55.3 Indeck Yerkes 59.9 Jamestown (Carlson) 47.3 Table A3-21. NFG Distribution Citygate Meters Pipeline Meter Name Meter Number Dominion National Fuel NFG NFGDC - Nashville-NFGDC NASH-NFGDC NFG NFGDC - Boone Mountain BOONE-NFGDC NFG NFGDC - Van VAN-NFGDC - A3-21 -

22 National Grid National Grid operates three subsidiaries in New York: National Grid Energy Delivery Long Island, National Grid Energy Delivery New York and Niagara Mohawk. Figure A3-15. National Grid Service Territory in Long Island Iroquois Transco Citygate LDC-Served Generator NGrid-Long Island - A3-22 -

23 Figure A3-16. National Grid Service Territory in New York City Texas Eastern Transco Citygate LDC-Served Generator NGrid-New York - A3-23 -

24 Figure A3-17. National Grid-Niagara Mohawk Service Territory Dominion Empire Iroquois Tennessee Citygate LDC-Served Generator NGrid-Niagara Mohawk - A3-24 -

25 Table A3-22. NYISO Generators Served by National Grid NGrid System Generator Capacity (MW) NGrid-Long Island Barrett NGrid-Long Island Brentwood 50.0 NGrid-Long Island Caithness NGrid-Long Island Calpine Bethpage NGrid-Long Island Charles P Keller 29.5 NGrid-Long Island Flynn NGrid-Long Island Freeport Electric 60.5 NGrid-Long Island Glenwood NGrid-Long Island LIPA Bethpage 96.0 NGrid-Long Island LIPA Freeport 60.0 NGrid-Long Island Pilgrim NGrid-Long Island Pinelawn 82.0 NGrid-Long Island Port Jefferson NGrid-Long Island Stony Brook 47.0 NGrid-Long Island Trigen Nassau 55.0 NGrid-New York Arthur Kill NGrid-New York Brooklyn Navy Yard NGrid-New York Far Rockaway 60.0 NGrid-New York Gowanus NGrid-New York Kent (North 1st) 50.0 NGrid-New York KIAC NGrid-New York Narrows NGrid-New York NYPA Gowanus NGrid-New York Pouch 50.0 NGrid-Niagara Mohawk Carr Street NGrid-Niagara Mohawk Carthage 62.9 NGrid-Niagara Mohawk Castleton Fort Orange 72.0 NGrid-Niagara Mohawk Indeck Corinth NGrid-Niagara Mohawk Indeck Oswego 57.4 NGrid-Niagara Mohawk Independence NGrid-Niagara Mohawk Oswego Harbor Power NGrid-Niagara Mohawk Rensselaer NGrid-Niagara Mohawk Sterling 65.3 NGrid-Niagara Mohawk Syracuse A3-25 -

26 Table A3-23. National Grid Citygate Meters DRAFT NGrid System Pipeline Meter Name Meter Number NGrid-Long Island Iroquois South Commack NGrid-Long Island Transco Long Island Lighting NGrid-New York Texas Eastern National Grid Metro NY, Goethals Rd., Staten Island, Richmo NGrid-New York Texas Eastern National Grid Metro NY, Goethals Rd., Staten Island, Richmo NGrid-New York Texas Eastern Bug Co Nat- Brooklyn Union Gas Company (National Grid NY) NGrid-New York Transco Brooklyn Union NGrid-Niagara Mohawk Dominion Niagara Mohawk Power Corporation (Eastern) NGrid-Niagara Mohawk Dominion Niagara Mohawk Power Corporation (Western) NGrid-Niagara Mohawk Empire NMPCANGC - Phoenix Line 39 - Ni Mo NGrid-Niagara Mohawk Empire NMPCANGC - Phoenix Line 63 - Sithe NGrid-Niagara Mohawk Iroquois Boonville NGrid-Niagara Mohawk Iroquois Croghan NGrid-Niagara Mohawk Tennessee NiagMoh/TGP South Albany Albany Niagara Mohawk Line 63 is a dedicated lateral from Empire to the Independence plant. - A3-26 -

27 Orange & Rockland (Con Edison) Figure A3-18. Orange & Rockland Service Territory Algonquin Columbia Millennium Tennessee Transco Citygate LDC-Served Generator O&R Service Territory Table A3-24. NYISO Generators Served by Orange & Rockland Generator Capacity (MW) Hillburn 46.5 Shoemaker A3-27 -

28 Table A3-25. Orange & Rockland Citygate Meters Pipeline Meter Name Meter Number Algonquin Suffern (Rockland,NY) 39 Algonquin Stony Point (Rockland,NY) 40 Columbia Port Jervis Millennium Greenwood Lake Millennium Tuxedo Millennium Sloatsburg Millennium Huguenot Millennium Westtown Millennium Minisink Millennium Warwick Millennium Buena Vista Tennessee Con Ed/TGP Pearl River NY Rockland Tennessee Con Ed/TGP Tappan NY Rockland Transco 10 Orange Rockland Transco has not delivered any volumes to Orange & Rockland citygate for several years. - A3-28 -

29 St. Lawrence Gas (Enbridge) Figure A3-19. St. Lawrence Gas Service Territory Iroquois Niagara Gas Citygate LDC-Served Generator St. Lawrence Gas Table A3-26. NYISO Generators Served by St. Lawrence Gas Generator Capacity (MW) Beaver Falls Massena A3-29 -

30 Table A3-27. St. Lawrence Gas Citygate Meters Pipeline Meter Name Meter Number Iroquois Edwards Iroquois Lisbon Iroquois New Bremen Niagara Gas N/A N/A - A3-30 -

31 Elizabethtown Gas / Public Service Electric & Gas Figure A3-20. Linden Cogen Gas Connections Algonquin Columbia Iroquois Texas Eastern Transco LDC-Served Generator Elizabethtown Gas PSE&G Table A3-28. NYISO Generators Served by Elizabethtown / PSE&G Generator Capacity (MW) Linden Cogen Located in New Jersey but electrically connected to NYISO Zone J (New York City). - A3-31 -

NPCC REGISTERED ENTITIES AS OF 08/23/2018

NPCC REGISTERED ENTITIES AS OF 08/23/2018 Entity Legal Name NERC ID Sub-Region BA DP DPUF GO GOP IA LSE PA PSE RC RP RSG TO TOP TP TSP Total Alcoa Power Generating Inc. -Long Sault Division NCR11791 New