Secretary Matthew A. Beaton oversees the Commonwealth's six environmental, natural resource and energy regulatory agencies, which include the Departments of Environmental Protection, Public Utilities, Energy Resources, Conservation & Recreation, Agricultural Resources, and Fish & Game. Secretary Beaton also serves as Chairman of the Massachusetts Water Resources Authority, the Energy Facilities Siting Board, and the Massachusetts Clean Energy Center.

During his tenure, Secretary Beaton has worked to stabilize electricity rates and reduce greenhouse gas emissions through bi-partisan energy diversification and solar legislation, and advancing clean energy technologies. Under his leadership, the secretariat has further worked to address climate change by working with cities and towns to make their communities more resilient, and through the implementation of an Executive Order which lays out a comprehensive approach to adapt and prepare for the impacts of climate change.