Greening an Architectural Land

Tuesday, December 1, 2015

Purpose of the project

In late 2012, Boston Properties purchased 200 Clarendon Street, formerly known as John Hancock Tower. While the image and architectural beauty of building remains timeless, the mechanical systems, original equipment installed in the late 70's and almost 40 years old, were in dire need of modernization.

Boston Properties spent the next year developing a multi-year capital improvement plan to replace the building mechanical systems and controls, with a goal of reducing energy consumption, elevating thermal comfort and sustainability performance, and maximizing the potential for tenant retention.



The modernization program consists of complete retro-commissioning of mechanical systems and four primary projects: Chiller Plant Reconstruction, Heat Exchanger Addition, Condenser Water Loop Optimization and Energy Management System (EMS) Enhancement.


With the implemented energy conservation measures and retro-commissioning fully stabilized, the project will improve thermal comfort and yield a combined annual energy savings of 3.3 million kWh per year “over 9% of the building’s electrical consumption” enough energy to power 438 homes in Massachusetts, or to offset the CO2 emissions produced by the combustion of 256,000 gallons of gasoline.

A much greener architectural landmark is on track to earn the ENERGY STAR label and Leadership in Energy and Environmental Design (LEED) for Existing Buildings certification for the 2016 performance period.


"Our objective is to invest in the systems of 200 Clarendon Street in ways which enhance the building’s sustainability, efficiency and comfort. We want the experience inside the building to be commensurate with the expectations you have when you see it from the outside."

 - Doug Linde, President, Boston Properties