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National Grid’s Corporate Office

Waltham, MA
Sasaki Associates, Inc.
LEED for Commercial Interiors v2.0
National Grid’s Corporate Office
Photo © Robert Benson Photography
National Grid’s Corporate Office

 

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Gross area: 312,000 ft2

Date completed: May 2009

Profile: The 312,000-square-foot LEED Platinum-certified commercial interior was completed in May 2009 and includes offices, conference rooms, support spaces, a café, and a library. The modular office system reduced square footage, and provides flexibility that will allow the company to change and evolve. Almost every workstation has access to outdoor views of the surrounding Reservoir Woods. Building materials and furnishings were selected for recycled content, local sourcing, and low-VOC. Water conservation strategies include a greywater system that reduces potable water use by 66 percent over an average building. The building also earned LEED Platinum certification for Core and Shell Construction.

Energy-saving innovation: The lighting design reduces energy use but still offers optimal lighting for employees. This design features task and ambient lighting only where needed rather than the uniform distribution of lighting that is typical in conventional office buildings. Combined with the use of efficient fluorescent bulbs, LED light fixtures, daylight sensing dimming controls, and maximum daylighting, this approach results in a lighting power density of .54 watts per square foot, a level 46 percent below energy code minimums. According to Sasaki, the cost of the innovative lighting system was about the same as that for conventional lighting.

 

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