He represents the trial staff of the Colorado Public Utilities Commission (PUC), a semi-independent group of engineers, economists, and other policy experts within the PUC. They intervene in most major cases involving the electric and natural gas utilities (e.g., Xcel Energy) and telecommunication companies in the state of Colorado. He regularly deals with utility ratemaking, wind and solar resource plans, demand-side management (e.g., energy efficiency) goals, and Boulder’s efforts to form a municipal utility.