Montana data centers strain power grid, raise utility bill concerns
Data center growth in Montana is leading to concerns over rising utility bills for residents, as NorthWestern Energy seeks to build new infrastructure. Consumer and environmental groups are urging the Public Service Commission to increase transparency and scrutiny of these deals. A Harvard researcher highlights how current utility models can socialize the costs of data center investments onto existing ratepayers.
NorthWestern Energy, Montana's largest utility, has signed agreements with at least three data centers in the last 18 months, with 11 additional companies expressing interest in securing electricity for their operations. While utility shareholders view these partnerships as a significant revenue opportunity, consumer advocates and utility watchdogs are concerned that the costs of new power plants, substations, and transmission lines required to serve these energy-intensive facilities will be passed on to the 413,000 existing Montanan ratepayers, who are already grappling with recent rate hikes.
These concerns have led to active discussions and a filing before the Montana Public Service Commission (PSC) in Helena by a coalition of consumer and environmental groups. This coalition argues that NorthWestern Energy has bypassed public transparency, exposing Montanans to potentially unfair financial burdens and environmental impacts from fossil fuel development. They are advocating for greater scrutiny and transparency in the utility's agreements with data centers.
Ari Peskoe, director of the Electricity Law Initiative at Harvard, explains that the traditional utility business model, designed for expanding service and motivating investment, is being exploited. Utilities profit by building infrastructure, and the massive energy demands of data centers justify billions in new infrastructure, the costs of which are typically spread across all customers. Peskoe warns of 'stranded assets' risks, where utilities build expensive infrastructure for data centers that might cease operations, leaving ratepayers to cover the costs.
Peskoe suggests that large-load tariffs and transparent, standardized agreements could protect consumers by requiring data centers to commit to long-term deals, ensuring they bear a significant portion of infrastructure costs. He also cautions regulators to carefully oversee utility subsidiaries created to serve data centers, ensuring they are not subsidized by general ratepayers. State governments' efforts to attract data centers with economic incentives can also place political pressure on regulators to approve projects, potentially at the expense of consumers.