Green River Star -

Wyoming's largest electric utility, Rocky Mountain Power, wants to hike prices by nearly 22%, a request that's primarily driven by volatile natural gas and coal markets, according to the company.

It's the largest rate increase request the regulated-monopoly utility has made in more than a decade, and it would result in an additional $16.42 per month for the average household customer, according to the company.

A hearing on the matter, including an opportunity for public comment, will take place from 5:30 p.m. to 7 p.m. Monday at the City Council Chambers in Rock Springs. The hearing will a...