1 Designated Network Loads and Resources Load Served by Company Owned Resources Entity NorthWestern Energy - retail supply load Location NorthWestern System Ash Grove Cement Company Aspen Air Corporation Aspen Air Corporation Barretts Minerals Clancy, Montana Billings, MT Billings, MT Dillion, MT Barretts Minerals Beartooth Electric Cooperartive Benefis Health Systems Big Horn County Electric Cooperative Dillion, MT Redlodge, MT Great Falls MT Southeastern Montana Bonneville Power Administration (one each for Glacier, Missoula, Northern Lights, Ravalli, and Vigilante Coops) The 5 BPA Coop loads located throughout western Montana Bonneville Power Administration (one each for Glacier, Missoula, Northern Lights, Ravalli, and Vigilante Coops) The Glacier Electric Coop load located near Cutbank, MT CHS Inc. Central Montana Electric Power Cooperative Laurel Montana Central Montana City of Great Falls Colstrip Steam Electric Station ExxonMobil Corporation General Mills Operations, LLC Great Falls Public Schools Oldcastle Cement Holdings (Holcim US Inc.) Great Falls, MT Nichols Pump near Colstrip Billings Montana Great Falls MT Great Falls MT Three Forks, Montana Network Resources Basin Creek NWMT Point of Receipt Firm Point of Delivery for Load to (POR) be Served Resource Owner BASINCREEK NWMT.SYSTEM Basin Creek Desig. MW Specified Designation Period 52 unspecified - 07/01/2036 BGI BGI NWMT.SYSTEM Yellowstone Energy Partners Limited 60 07/01/2013 -12/01/2028 Black Eagle Black Eagle Black Eagle Black Eagle Solar Broadwater Dam Colstrip 3 & 4 Crooked Falls - (Ryan, Morony, Cochrane, Rainbow) Crooked Falls - (Ryan, Morony, Cochrane, Rainbow) Deer Creek Solar Fairfield Wind Flint Creek Hydro Fox Solar Green Meadow Solar, QF BLACKEAGLE BLACKEAGLE BLACKEAGLE BROADWATER COLSTRIP CROOKEDFALLS NWMT.SYSYTEM NWMT.SYSYTEM GTFALLSNWMT GTFALLSNWMT NWMT.SYSTEM NWMT.SYSYTEM NWMT.SYSYTEM NorthWestern Energy NorthWestern Energy NorthWestern Energy Black Eagle Solar LLC Montana DNRC NorthWestern Energy NorthWestern Energy 5 5 17 3 10 222 70 11/18/2014 - 08/01/2017 8/1/2017 - 8/01/2042 11/18/2014 - 08/01/2039 07/01/2017 - 07/01/2042 09/01/2013 - 12/01/2028 12/29/2010 - 9/1/2037 11/18/2014 - 8/01/2017 CROOKEDFALLS GTFALLSNWMT NorthWestern Energy 170 11/18/2014 - 08/01/2039 DEERCREEK FAIRFIELD FLINTCREEK FOX GRNMEADOW NWMT.SYSYTEM GTFALLSNWMT NWMT.SYSTEM GTFALLSNWMT NMWT.SYSYTEM Deer Creek Solar 1, LLC Fairfield Wind, LLC Flint Creek Hydroelectric, LLC Fox Solar LLC Green Meadow Solar 1, LLC #179 3 10 2 3 3 12/01/2016 - 12/01/2041 01/01/2014 - 01/01/2039 12/01/2012 - 12/31/2037 07/01/2017 - 07/01/2042 12/01/2016 - 12/01/2041 Greenfield Wind Gordon Butte, QF Great Divide Solar Hauser Holter GREENFIELD GORDONBUTTE GREATDIVIDE HAUSER HOLTER GTFALLSNWMT NWMT.SYSYTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM Greenfield Wind LLC Gordon Butte Wind, LLC Great Divide Solar LLC NorthWestern Energy NorthWestern Energy 25 10 3 19 48 12/1/2015 - 12/1/2040 12/01/2011 - 12/01/2036 07/01/2017 - 07/01/2042 11/18/2014 - 08/01/2039 11/18/2014 - 08/01/2039 Judith Gap JUDITHGAP NWMT.SYSTEM InVenergy 135 10/01/2013 - 12/01/2025 Lower South Fork Madison Magpie Solar Mill Creek Generating Station Montana 1 LOWERSF MADISON MAGPIE DAVEGATES MT1 NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM Lower South Fork LLC NorthWestern Energy Magpie Solar LLC NorthWestern Energy 1 8 3 155 35 12/01/2012 - 12/31/2037 11/18/2014 - 08/01/2039 07/01/2017 - 07/01/2042 1/1/2011 - in perpetuity 07/01/2013 -12/01/2028 Musselshell Wind, QF Mystic Qualifying Facilities Ragen Ranch solar 1, LLC River Bend Solar, QF South Mills Solar 1, LLC Spion Kop MUSSELSHELL MYSTIC Various RAGENRANCH RIVERBEND SOUTHMILLS SPIONKOP NWMT.SYSYTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM GTFALLSNWMT Colstrip Energy Partners Limited Musselshell Wind Project, LLC NorthWestern Energy Various Ragan ranch Solar 1, LLC River Bend Solar, LLC #203 South Mills Solar 1, LLC NorthWestern Energy 20 12 2 3 2 3 40 12/31/2012 - 12/31/2037 11/18/2014 - 08/01/2039 7/1/2013 - 12/01/2028 12/01/2016 - 12/01/2041 12/01/2016 - 12/01/2041 12/01/2016 - 12/01/2041 11/01/2012 - 11/01/2037 Thompson Falls TFALLS NWMT.SYSTEM NorthWestern Energy 94 11/18/2014 - 08/01/2039 Tiber Montana Turnbull Hydro Two Dot Wind, QF WAPA TURNBULL NWMT.SYSTEM WAPA BA GTFALLSNWMT NWMT.SYSTEM Tiber Montana Turnbull Hydro Two Dot Wind Farm, LLC 7 13 10 unspecified - 2024 4/1/2011 - 4/1/2031 01/01/2014 - 12/31/2037 Colstrip 3 & 4 Colstrip Colstrip Colstrip Colstrip Fort Peck COLSTRIP COLSTRIP COLSTRIP COLSTRIP COLSTRIP GREATFALLS NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM Talen Talen Talen Talen Talen WAPA 6 11 8 4 4 2 01/01/2016 - 12/31/2020 01/01/2016 - 09/30/2016 10/01/2016 - 9/30/2018 7/1/2016 - 9/30/2016 10/01/2016 - 12/31/2016 Kerr Various BPA System Resources* Various WAPA System Resources* KERR BPAT.NWMT GREATFALLS GTFALLSNWMT NWMT.SYSTEM/BPA NWMT.SYSTEM/BPA Energy Keepers Inc. BPA WAPA Federal Columbia River Power System (Glacier 37.7 MW, Missoula 56.8 MW, Northern Lights 2.7 MW, Ravalli 42.4 MW, Vigilante 44.2 MW) Federal Columbia River Power System (Glacier 37.7 MW, Missoula 56.8 MW, Northern Lights 2.7 MW, Ravalli 42.4 MW, Vigilante 44.2 MW) Colstrip Basin Electric Contract Basin Electric Contract Basin Electric Contract Colstrip Colstrip 3 & 4 Colstrip 1 & 2 Colstrip Colstrip Kerr BPAT.NWMT NWMT.SYSTEM BPA 11/01/2015 - 11/01/2020 4 7/1/2016 to 6/30/2019 09/01/2002-12/31/2020 15 2.099 MW - 09-01-2002-12-31-2020 4.889 MW 147 10/01/2011-09/30/2028 BPAT.NWMT GTFALLSNWMT BPA 37.7 10/01/2011-09/30/2028 COLSTRIP CROSSOVER CROSSOVER CROSSOVER COLSTRIP COLSTRIP COLSTRIP COLSTRIP COLSTRIP KERR NWMT.SYSTEM, GTFALLSNWMT NWMT.SYSTEM GREATFALLS GTFALLSNWMT GTFALLSNWMT NWMT.SYSTEM NWMT.SYSTEM GTFALLSNWMT GTFALLSNWMT NWMT.SYSTEM Talen Basin Electric Basin Electric Basin Electric Talen Avista Corp Talen Talen Talen Energy Keepers Inc. 25 116 14 2 4 9 35 4 1 6 12/01/2014 - 12/01/2019 Through 01/01/2023 Through 01/01/2023 Through 01/01/2023 10/01/2014 - 10/31/2018 BLEAGLSOLAR Notes Temporarily terminated 52MW 10/1/2016 to 11/1/2016 Temporarily terminated 60MW 10/1/2016 to 11/1/2016 Temporarily terminated 27MW 10/1/2016 to 11/1/2016 Temporarily terminated 48MW 10/1/2016 to 11/1/2016 Temporarily terminated 135MW 10/1/2016 to 11/1/2016 Temporarily terminated 35MW 10/1/2016 to 11/1/2016 Temporarily terminated 40MW 10/1/2016 to 11/1/2016 Temporarily terminated 94MW 10/1/2016 to 11/1/2016 expires 9/30/2016 expires 9/30/2016 Pseudo Tie to BPA Pseudo Tie to BPA 01/01/2009-07/31/2018 09/01/2016 - 03/31/2018 10/01/2014 - 10/01/2019 01/01/2016 - 02/28/2017 9/30/2016 2 Designated Network Loads and Resources Load Served by Company Owned Resources Entity Oldcastle Cement Holdings (Holcim US Inc.) Imerys Talc America (Luzenac) Montana Refining Company Montana Resources Montana State University Phillips 66 Company Project Spokane, LLC Town of Philipsburg REC REC Roseburg Forest Products Roseburg Forest Products Southern Montana Electric Generation and Transmission Suiza Dairy Group (Meadow Gold) Location Three Forks, Montana Three Forks, Montana Great Falls, Montana Butte, Montana Bozeman, Montana Various Bonner, Montana Philipsburg, Montana Butte, Montana Butte, Montana Missoula, Montana Missoula, Montana Southeastern Montana Stillwater Mining Company Columbus and Nye, Montana Western Area Power Administration (WAPA) Dodson, Toston, Fort Belknap and Hammond, Montana Network Resources Kerr Kerr Colstrip Colstrip Various WAPA System Resources* Kerr Kerr Town of Philipsburg Generation Colstrip 3 & 4 Colstrip Colstrip Kerr Fort Peck Colstrip Colstrip Colstrip Various WAPA System Resources* NWMT Point of Receipt (POR) KERR KERR COLSTRIP COLSTRIP GREATFALLS KERR KERR COLSTRIP COLSTRIP COLSTRIP KERR GREATFALLS COLSTRIP COLSTRIP COLSTRIP CROSSOVER Firm Point of Delivery for Load to be Served NWMT.SYSTEM NWMT.SYSTEM GTFALLSNWMT NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM NWMT.SYSTEM GTFALLSNWMT NWMT.SYSTEM NWMT.SYSTEM GREATFALLS = 2MW NWMT.SYSTEM = 1 Resource Owner Energy Keepers Inc. Energy Keepers Inc. Talen Talen WAPA Energy Keepers Inc. Energy Keepers Inc. Town of Philipsburg Talen Talen Talen Energy Keepers Inc. WAPA Talen Talen Talen Desig. MW 6 4 19 43 4 50 8 0.2 20 135 8 6 29 1 1 31 WAPA 3 Specified Designation Period 03/01/2017 - 02/28/2019 1/01/2016 - 12/31/2016 01/01/2016 - 12/31/2018 01/01/2016 - 12/31/2016 01/01/2006-12/31/2020 6/1/2016 - 5/31/2017 9/1/2016 to 8/31/2017 10/1/2015 - 10/1/2040 7/1/2013 - 3/1/2018 1/01/2015 - 03/01/2019 10/01/2014 - 9/30/2016 10/1/2016 - 9/30/2017 5/26/2004 - 12/21/2020 10/01/2014 - 10/01/2023 10/01/2014 - 10/01/2023 7/1/2015 - 6/30/2018 Notes expires 9/30/2016 Switching to Kerr Permanently Terminated 1MW 11-01-2015 *Off System Resource 9/30/2016 Resource Data NorthWestern Energy (NWMT) The information below contains nameplate data for generators that have all or part of the unit designated by a Network Transmission Customer. Actual MW amounts designated are displayed under the Designated Network Loads and Resources document Resource Type Resource Geographic Location Resource Electrical Location Resource Capacity Resource Name Company Owned Generation Facilities Colstrip 4 (NWE's Share) Dave Gates Generating Station Black Eagle Cochrane (Great Falls Hydro) Hauser Holter Thermal Thermal Hydro Hydro Hydro Hydro Rosebud Deer Lodge Cascade Cascade Lewis & Clark Lewis & Clark Colstrip 500 kV Mill Creek 230 kV Great Falls Riverview 100 kV Rainbow 100 kV East Helena 69 kV Canyon Crk to Wolf Crk 100 kV 222.00 155.00 22.00 70.00 18.00 49.00 Kerr Hydro Lake Kerr 115 kV and 161 kV 208.00 Madison Mystic Morony (Great Falls Hydro) Rainbow (Great Falls Hydro) Ryan (Great Falls Hydro) Spion Kop Thompson Falls Hydro Hydro Hydro Hydro Hydro Wind Hydro Madison Stillwater Cascade Cascade Cascade Judith Basin Sanders Harrison to Cobblestone 100 kV Line Creek 50 kV Great Falls 100 kV Rainbow 100 kV and 69 kV Rainbow 100 kV 100 kV line Raynesford Thompson Falls 115 kV 11.00 12.00 49.00 61.00 60.00 40.00 98.00 Contracted Generation Facilities Basin Creek Thermal Silverbow Butte MHD 161 kV 51.80 Basin Electric Power Cooperative Resources BPA Federal Columbia River Power System Various, with delivery to Crossover POD on the NorthWestern System Washington and Oregon WAPA Transmission System Various WAPA Transmission System Various Basin Electric Power Contract BPA Off-System Contracts Canyon Ferry Colstrip 1 & 2 (PPL's Share) Colstrip 1, 2, 3 4 (Other Partner's Share)* Colstrip 3 (PPL's Share) Hydro Lewis & Clark Canyon Ferry 100 kV Thermal Thermal Thermal Rosebud Rosebud Rosebud Colstrip 500 kV Colstrip 500 kV Colstrip 500 kV Fort Peck Hardin Judith Gap RBS Sempra Contract Hydro Thermal Wind Off-System Power Contract 161 kV WAPA line (NE MT) Hardin Auto 230 kV Judith Gap South 230 kV WAPA Transmission System Tiber Turnbull Hydro Hydro Hydro Valley County Big Horn Wheatland Various, with delivery to Crossover POD on the NorthWestern System Liberty Teton 115kV bus Tiber (WAPA) Turnbull Sub 69 kV near Bole Tap 58.00 310.00 1,346.00 222.00 63.00 109.00 135.00 Various 7.00 13.00 9/30/2016 Qualifying Facilities Barney Creek Billings Generation, Inc. Black Eagle Solar LLC Boulder Hydro Broadwater (Toston) Dam Cascade Creek Colstrip Energy Limited Partnership (Montana One) Deer Creek Solar Hydro Thermal Solar Hydro Hydro Hydro Thermal Park Yellowstone Cascade Granite Broadwater Park Rosebud Pine Creek REA (PEC) 69 kV Billings Exxon 50 kV 4.5 Miles NE of Great Falls, MT Philipsburg 50 kV Broadwater 100 kV Pine Creek REA (PEC) 69 kV Montana One 115 kV Solar Missoula Deer Creek Rd, Missoula MT Fairfield Wind Wind Teton Flint Creek Hydro Fox Solar LLC Gordon Butte Great Divide Solar LLC Green Meadow Greenfield Wind Greycliff Wind Hanover Hydro (Jenni Hydro) Lower South Fork Magpie Solar LLC Martinsdale Colony Martinsdale Colony South Mission Creek Mission Creek Moe Wind Montana Marginal Energy Musselshell Wind Pine Creek Pony Generating Station Ragen Ranch Solar 1, LLC River Bend Ross Creek Sheep Valley Ranch South Dry Creek South Hills Solar 1, LLC Strawberry Creek Two Dot United Materials Hydro Solar Wind Solar Solar Wind Wind Hydro Hydro Solar Wind Wind Wind Wind Wind Wind Wind Hydro Hydro Solar Solar Hydro Wind Hydro Solar Hydro Wind Wind Granite Cascade Wheatland Lewis & Clark Lewis & Clark Teton Sweet Grass Fergus Carbon Golden Valley Wheatland Wheatland Park Park Wheatland Park Wheatland Park Madison Broadwater Stillwater Gallatin Wheatland Fairfield Wind Substation 69 kV 1.5miles East WAPA Bole Substation Distribution system near Philipsburg 4.5 miles SW of Great Falls, MT 100 kV line Groverland 1 Mile NE of Canyon Creekn, MT 7330 Green Meadow Drive, Helena Rainbow - Bole 69kV Big Timber 161kV Hanover 50 kV 50kV line near Red Lodge 2 Miles SE of Lavina, MT Martinsdale 100 kV Martinsdale 100 kV Grey Cliff 50 kV Grey Cliff 50 kV Two Dot 100 kV Downer 50 kV 100 kV line Harlotown Pine Creek Substation 100kV bus Harrison-Pony Ragen Ranch, Townsend, MT Pill Hill Road, Reed Point, MT 50kV Bus Belgrade Two Dot Wind Sub 100kV 100kV bus Two Dot South Hills Rd., Hardin MT 69 kV bus Pine Creek REA (PEC) Wisconsin Creek Ptn Hydro Madison Big Horn Park Wheatland Cascade 100kV line near Great Falls Northwest Substation Distribution system near Sheridan, MT 0.06 52.00 3.00 0.51 10.00 0.07 35.00 3.00 10.00 2.00 3.00 10.00 3.00 3.00 25.00 20.00 0.24 0.46 3.00 0.75 2.00 0.07 0.07 0.45 0.20 20.00 0.30 0.30 3.00 2.00 0.45 0.46 1.20 3.00 0.19 10.00 9.00 0.40 * This represents the following partners share: Portland General Electric, PacifiCorp, Avista Corporation and Puget sound Energy. 9/30/2016