The Montana Public Service Commission drew a standing-room crowd this week for a hearing on NorthWestern Energy's proposed rate structure for data centers — and that turnout tells you something important about where this debate is headed. Data centers are enormous electricity consumers, and as tech companies scout Montana for server farm locations, the question of how to price that power has become genuinely contentious. Ratepayers and consumer advocates worry that a favorable rate structure for large industrial customers shifts costs onto residential customers. The energy industry and economic development boosters argue that data centers bring jobs, tax revenue, and investment that benefit the broader community. The Montana Public Service Commission sits in the middle of that argument, and based on this week's hearing, neither side is ready to back down. The PSC appeared multiple times in this week's coverage, suggesting the commission is becoming a more prominent battleground for major energy policy questions as Montana's grid faces new and unfamiliar demands. For Helena families opening their NorthWestern bills each month, the outcome of this proceeding will matter — potentially a lot.