The Montana Public Service Commission convened a four-day hearing this week to consider whether to approve a proposed merger between NorthWestern Energy and Black Hills Corp — a deal that would reshape how most Montanans get their electricity and, if approved, would hand NorthWestern CEO Brian Bird a payout of as much as $16 million.

NorthWestern has argued that its current size puts it at a disadvantage on the national stage, and that combining with Black Hills would give the merged utility greater resources to invest in infrastructure and manage costs. Business groups have lined up behind the deal, contending that a larger, better-capitalized utility would be better positioned to serve Montana's commercial and industrial electricity needs over the long term.

But consumer advocates and residential ratepayers have raised pointed objections. Critics of the merger have cited potential rate increases and concerns about service reliability under a new ownership structure. The question of executive compensation has added friction to those arguments: beyond Bird's potential $16 million, the top five NorthWestern executives stand to collect nearly $30 million combined if the transaction closes — a figure that consumer groups say ratepayers should weigh carefully when the PSC deliberates.

Bird, if the merger is approved, would lead the combined company. NorthWestern is Montana's dominant electric and gas utility, serving customers across much of the state including the Helena area. The PSC, which must sign off on any merger of this scale, is the final state-level hurdle before the deal could move forward. The commission's decision will determine whether Montana's largest utility remains an independent Montana-headquartered company or becomes part of a larger regional enterprise.