Two and a half years after taking the helm at the Massachusetts DPU, Chair Jamie Van Nostrand is leaving after leading it through a series of major changes in its approach to natural gas regulation.

The Massachusetts Department of Public Utilities directed the state’s gas distribution companies to revise their line extension policies and require new customers to cover the cost of new hookups, with limited exceptions.

The Massachusetts Department of Public Utilities has ordered major changes to the state’s program for addressing pipe leaks, aiming to better align the program with its long-term decarbonization strategy.

The Massachusetts Department of Public Utilities has expedited the state’s review process for municipal aggregation plans.

In Boston and throughout the broader region, climate-fueled extreme weather events are already putting stress on essential energy infrastructure.

Massachusetts Energy and Environmental Affairs Secretary Rebecca Tepper appointed Jamie Van Nostrand and Staci Rubin to the Department of Public Utilities.