MassDOT District 2 Towards Zero Net Energy Study

CHA performed an enhanced Toward Zero Net Energy (TZNE) feasibility study for the MassDOT Northampton District 2 Administration Building. This project went beyond the typical energy audit by targeting an existing building to achieve deep energy savings through implementation of cutting-edge energy conservation measures (ECMs) and on-site renewable energy systems.

Achieving ZNE in existing buildings is very challenging; however, CHA developed four options that were evaluated and considered by stakeholders as part of a TZNE charrette. At the conclusion of the charrette, the team selected an option consisting of several ECMs bundled together with a net-metered solar photovoltaic (PV) system to create a net zero energy facility. Total savings approaching net zero energy usage and utility costs were identified with an overall payback of less than 10 years.

Project summary


Four options for client to consider.

<10 yrs.

Overall payback period of less than 10 years.


Zero net energy achieved for an existing building.

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Mitch DeWein, CEM

Mitch DeWein, CEM
Project Team Leader, Generation and Energy

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Mitch is a senior energy analyst and oversees detailed energy assessments, cogeneration studies and district energy plans. He brings 10 years of experience in mechanical system design, equipment selection, energy analysis, construction cost estimation, and design coordination.