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Black Hills Corporation to merge with NorthWestern Energy

PUBLIC · BKHAug 17, 2026about 4 hours ago

Acquiring Company

Black Hills Corporation

Acquired Company

NorthWestern Energy Group

Rapid CityMontanaEnergyOil And GasRenewable EnergyBiomass EnergyEnergyOil And GasRenewable EnergyBiomass Energy

Description

Black Hills Corporation has submitted pro forma financial information related to its merger with NorthWestern Energy Group. The merger agreement was finalized on August 18, 2025, and involves an all-stock transaction. Both companies' boards unanimously approved the merger, which is still pending regulatory approvals.

Company Information

Company

Black Hills Corporation

Location

Rapid City, South Dakota, United States

About

Black Hills Corporation is a diversified energy company that provides electricity and natural gas to customers in multiple states. It also operates in the renewable energy sector. The company is known for its commitment to serving communities and maintaining environmental stewardship. Black Hills aims to provide safe and reliable energy services.

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M&A Insights

Based on deal data
Integration timeline
70% of M&A integrations take 12-24 months to complete
Tech stack consolidation
83% of merged companies consolidate technology vendors within first year
Post-acquisition investment
Companies increase IT spending by 23% on average after acquisitions
Success factor
M&A deals with strong technology integration plans are 2.5x more likely to succeed

Frequently asked

Who acquired NorthWestern Energy Group?

NorthWestern Energy Group was acquired by Black Hills Corporation, based in Rapid City. The deal was reported on August 17, 2026. Black Hills Corporation is a diversified energy company that provides electricity and natural gas to customers in multiple states. It also operates in the renewable energy sector. Black Hills Corporation is publicly traded (BKH) and operates in Energy.

When did Black Hills Corporation acquire NorthWestern Energy Group?

Black Hills Corporation's acquisition of NorthWestern Energy Group was reported on August 17, 2026. Black Hills Corporation has submitted pro forma financial information related to its merger with NorthWestern Energy Group. The merger agreement was finalized on August 18, 2025, and involves an all-stock transaction. Fundz records the date the transaction was first publicly reported, sourced from filings and company announcements.

What does NorthWestern Energy Group do?

NorthWestern Energy Group, Inc. d/b/a NorthWestern Energy (Nasdaq: NWE) is a company participating in the energy sector, with a focus on expanding regional transmission projects. It is publicly traded (NWE), operating in Energy, and is based in Montana.

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