Search
December 5, 2025

Black Hills Corp.

NorthWestern Energy
Black Hills-NorthWestern Merger Could Reshape Western Market Map

The proposed merger between Black Hills Corp. and NorthWestern Energy likely will reshape the map in the competition between CAISO’s Extended Day-Ahead Market and SPP’s Markets+ — but it’s still too early to know where new boundaries will be drawn.

Black Hills Energy
CAISO’s WEIM Plucks Black Hills Utilities from SPP’s WEIS
CAISO scored a geographically small but symbolically significant victory with the announcement that two Black Hills Energy subsidiaries will move to the ISO’s Western Energy Imbalance Market.
Black Hills Corp.
FERC OKs $150K Penalty on Black Hills for Delayed Filings
FERC approved a $150,000 civil penalty on Black Hills Corp. and three subsidiaries for failing to timely file 103 jurisdictional agreements.
Basin Electric Power Corporation
FERC Accepts Basin Tariff Revisions, Sets for Hearing
FERC accepted SPP’s proposed tariff revisions for Basin Electric Power Cooperative’s formulate rate template.
© RTO Insider LLC
In Contest for the West, Markets+ Gathers Momentum — and Skeptics
While some stakeholders are ‘charmed’ by SPP’s market initiative effort, others urge need for deeper tie to CAISO.
© RTO Insider LLC
Markets+ State Committee Adopts Inclusive Membership Policy
Western state regulators unanimously approved a revised charter for the Markets+ State Committee allowing additional states and Canadian provinces to join.
NYPA
FERC Approves Batch of Line Ratings Compliance Filings
FERC approved the compliance filings of six transmission providers, including those of NYISO and CAISO, with Order 88.
Xcel Energy
PSCo, Idaho Power Comply with Show-cause Order

FERC has approved two Western utilities’ revisions to their transmission formula rate protocols in their response to a show cause proceeding begun last year.

WestConnect
WestConnect Tx Cost Allocation Plan Rejected by FERC
FERC rejected a proposed settlement intended to resolve a longstanding dispute over how to implement Order 1000 in the WestConnect planning region.
Mortensen Wind Energy Group
FERC Denies Tenaska’s Complaints over Wind Curtailments
FERC has denied a Tenaska complaint alleging that grid operators adopted operating guides, resulting in unduly discriminatory curtailment for its wind farm.

Want more? Advanced Search