"The terms of the coal supply agreement are available to the Montana Consumer Council, Montana Public Service Commission, and parties participating in MPSC proceedings where the coal supply agreement is an issue," said Brandy Powers, a NorthWestern spokesperson. "However, the terms are confidential business information of competitive entities. It's standard practice for competitive businesses and vendors, like Talen Energy Montana LLC and Westmoreland Rosebud Mining LLC, to protect confidential business information during regulatory proceedings.