| 11/19/2009 | MPSC Rules NorthWestern Energy May Re-file General Rate Filing to Comply With State Minimum Filing Requirements |
| 11/13/2009 | NorthWestern Energy's Infrastructure Stakeholder Group Announces Upcoming Meeting |
| 11/10/2009 | NorthWestern Energy Announces Power Purchase Agreement with Turnbull Hydro, LLC |
| 11/9/2009 | NorthWestern Energy Customers Invited to Havre, Mont., Do-it-Yourself Home Energy Expo and Events |
| 11/6/2009 | NorthWestern Energy Customers Invited to Great Falls Do-It-Yourself Home Energy Expo and Events |
| 11/6/2009 | NorthWestern Energy Customers Invited to Great Falls Do-It-Yourself Home Energy Expo and Events |
| 10/28/2009 | NorthWestern Reports Third Quarter 2009 Financial Results |
| 10/26/2009 | NorthWestern Energy customers Invited to Helena Do-it-Yourself Home Energy Expo and Events |
| 10/19/2009 | NorthWestern Energy Customers Invited to Butte, Mont., Do-it-Yourself Home Energy Expo and Events |
| 10/19/2009 | NorthWestern Energy Submits Delivery Services General Rate Case Filing to the Montana Public Service Commission |
| 10/15/2009 | Innovative Partnership to Develop Community Based Biomass Power in Montana |
| 10/14/2009 | NorthWestern Energy Plans Outage in the Aberdeen Area for House Move |
| 10/12/2009 | NorthWestern Energy Customers Invited to Bozeman, Mont. Do-It-Yourself Home Energy Expo and Events |
| 10/9/2009 | NorthWestern to Host Third Quarter 2009 Financial Results Conference Call |
| 10/9/2009 | NorthWestern Energy Submits Energy Efficiency Program Plans to South Dakota Public Utilities Commission For Consideration |
| 10/5/2009 | NorthWestern Energy Customers Invited to Lewistown, Montana Do-It-Yourself Home Energy Expo and Events |
| 10/5/2009 | NorthWestern Energy Issues Important Safety Reminders About Downed Power Lines and Other Weather-Related Concerns |
| 10/5/2009 | NorthWestern Energy Notifies Customers of Planned Power Outage in Doland, South Dakota |
| 10/2/2009 | NorthWestern Energy Taps Private Placement Market for $55 Million 30-Year First Mortgage Bonds |
| 9/29/2009 | NorthWestern Energy Provides Update on Upcoming Montana General Rate Case Filing |
| 9/28/2009 | NorthWestern Energy Notifies Customers of Planned Power Outage in Tulare, South Dakota |
| 9/28/2009 | NorthWestern Energy Customers Invited to Kalispell, Montana, Do-It-Yourself Home Energy Expo and Events |
| 9/21/2009 | NorthWestern Energy's Montana Customers Invited to Do-It-Yourself Home Energy Expo and Events |
| 9/21/2009 | NorthWestern Energy Customers Invited to Missoula Do-it-Yourself Home Energy Expo and Events |
| 9/15/2009 | NorthWestern Energy Plans Public Meetings in Billings and Missoula, Montana |
| 9/14/2009 | NorthWestern Energy Notifies Customers of Planned Power Outage in Hitchcock and Bonilla |
| 9/1/2009 | MSTI Will Provide Economic and Environmental Benefits |
| 9/1/2009 | NorthWestern Energy Responds to Chronicle’s Opinion |
| 8/25/2009 | NorthWestern Energy Plans Groundbreaking Celebration at Mill Creek |
| 8/19/2009 | NorthWestern Energy Schedules Community Meeting to Update Bozeman Recovery Effort |
| 8/17/2009 | NorthWestern Energy Seeks Additional Renewable Energy Supply in Montana |
| 8/5/2009 | NorthWestern Energy Adds Additional Route Options to Jack Rabbit-Big Sky Transmission Line |
| 8/5/2009 | BP Wind Energy and NorthWestern Energy Welcome South Dakota Governor Rounds to First Wind Project in Hand County |
| 8/4/2009 | NorthWestern Corporation Senior Secured Credit Ratings Upgraded |
| 7/30/2009 | NorthWestern Declares Quarterly Common Stock Dividend of 33.5 Cents Per Share |
| 7/29/2009 | NorthWestern Reports Second Quarter 2009 Results |
| 7/28/2009 | Planned Power Outage Scheduled for the Bozeman, MT Area |
| 7/13/2009 | NorthWestern to Host Second Quarter 2009 Financial Results Conference Call |
| 6/30/2009 | NorthWestern Energy Boosts and Extends Corporate Revolving Credit Facility |
| 6/30/2009 | NorthWestern Energy Notifies the Billings Area of a Potential Water Hazard on the Yellowstone River |
| 6/25/2009 | NorthWestern Energy Notifies Billings Customers of Maintenance Work |
| 6/23/2009 | NorthWestern Energy Responds to FERC Orders on Transmission Projects |
| 6/15/2009 | Planned Power Outage Scheduled for the Bozeman, Mont. Area |
| 6/10/2009 | NorthWestern Energy Unveils Hybrid Bucket Truck in Missoula |
| 6/9/2009 | NorthWestern Energy Addresses Proposed Butte-Silver Bow Ordinance on Underground Electric Transmission Lines |
| 6/9/2009 | NorthWestern Energy Announces Organization Changes |
| 6/8/2009 | NorthWestern Energy Annual Natural Gas Inspections Underway Across Montana |
| 6/8/2009 | NorthWestern Energy Annual Natural Gas Inspections Underway Across South Dakota and Nebraska |
| 5/27/2009 | NorthWestern Energy to Send Scratch and Sniff Odorant Cards as Customer Safety Reminder |
| 5/19/2009 | MPSC Issues Final Order Approving NorthWestern's Mill Creek Generating Station |
| 5/8/2009 | NorthWestern Energy Names Rick Hoffman as Huron Area Manager |
| 5/4/2009 | MPSC Gives Nod of Approval to Mill Creek Generating Station |
| 4/27/2009 | Thank You, Butte! |
| 4/23/2009 | NorthWestern Energy Opens Recovery Office in Downtown Bozeman |
| 4/23/2009 | NorthWestern Reports First Quarter 2009 Results |
| 4/20/2009 | NorthWestern Energy Reminds Customers of Programs and Services for Earth Day |
| 4/16/2009 | NorthWestern Energy Notifies Customers of Planned Power Outage in Stickney, S.D. |
| 4/10/2009 | NorthWestern to Host First Quarter 2009 Financial Results Conference Call |
| 4/8/2009 | The EIS Process is Working |
| 4/3/2009 | NorthWestern Energy to Conduct Maintenance on 500kV Colstrip Transmission System |
| 3/31/2009 | NorthWestern Energy Plans Power Outage in Victor, Montana for Late Wednesday Night |
| 3/23/2009 | NorthWestern Energy Prices First Mortgage Bond Offering |
| 3/20/2009 | NorthWestern Energy Launches New Web Site to Update Bozeman Residents on Recovery Efforts and to Help Promote Downtown Economy |
| 3/19/2009 | Dorothy M. Bradley to Stand for Election at NorthWestern Energy’s 2009 Annual Meeting of Stockholders |
| 3/16/2009 | Winners of the First Annual Montana BetterBricks Awards Announced |
| 3/13/2009 | NorthWestern Energy Responds to Investigation Findings |
| 3/10/2009 | News Brief: NorthWestern Energy Details Explosion Response |
| 3/10/2009 | Moody's Investors Service Upgrades NorthWestern's Credit Ratings |
| 3/6/2009 | News Brief: Update on NorthWestern Energy’s Response to Downtown Bozeman Explosion |
| 3/2/2009 | NorthWestern Energy Begins Shiloh Road Transmission Line Relocation Project in Billings, Mont. |
| 2/27/2009 | NorthWestern Energy Supports Cost Effective Wind Energy |
| 2/20/2009 | Montana Ambassadors Honor Champions of High Performance Buildings |
| 2/19/2009 | NorthWestern Energy Notifies customers of Planned Power Outage in Hazel, South Dakota |
| 2/18/2009 | NorthWestern Energy to Help Track Renewable Energy Generation in Montana |
| 2/13/2009 | NorthWestern Reports 2008 Financial Results |
| 2/11/2009 | NorthWestern Energy Notifies Customers of Planned Power Outage in Henry, S.D. |
| 2/5/2009 | NorthWestern Energy Welcomes New Director to Board |
| 1/29/2009 | NorthWestern To Host Year-End 2008 Financial Results Conference Call |
| 1/23/2009 | NorthWestern Energy's Proposed Mill Creek Generating Station Receives Air Quality Permit |
| 1/23/2009 | NorthWestern Crews Complete Gas Pipeline Replacement Under Blackfoot River |
| 1/20/2009 | NorthWestern Energy Alerts Customers to Prepare for Weather-Induced Higher Bills This Winter |
| 1/19/2009 | NorthWestern Energy and South Dakota PUC Remind Customers that "Anybody Can Serve" |
| 1/19/2009 | NorthWestern Energy Reminds its Montana Customers "Anybody Can Serve" |
| 1/15/2009 | NorthWestern Energy Announces Open Season for Electric Transmission Projects |
| 1/15/2009 | NorthWestern Energy Reminds Customers to Remove Snow and Ice from Meters and Exhaust Vents |
| 1/14/2009 | NorthWestern Energy Notifies Customers of Planned Power Outage in Scotland, South Dakota |
| 1/12/2009 | NorthWestern Energy Outreach Effort Builds Upon Energy Summit Momentum |