homepage home
subscribe to New York Construction magazine subscribe
newsletters free e-newsletter
advertise
industry jobs industry jobs
Dodge Data & Analytics
New York Construction Logo
Order Your RISK FREE Subscription
comment

Ranking Efficiency

New Legislation Pits NYC Buildings Against Those in Other U.S. Cities

Text size: A A
[ Page 1 of 2 ]

With new legislation passed in New York City late last year, all of New York's buildings totaling more than 50,000 sq ft are required to submit to benchmarking and retro-commissioning, essentially putting those buildings' efficiency ratings up against other buildings across the country.

Engineers working on building management systems at a Morgan Stanley building in New York.
Photo courtesy of Hines Property Management
Engineers working on building management systems at a Morgan Stanley building in New York.
----- Advertising -----

Benchmarking essentially ranks a building’s energy and water efficiency against similar buildings. The legislation specifies the use of the U.S. EPA’s Portfolio Benchmarking tool as the standard for calculating the ranking.

The process is very simple. Data on a building’s energy consumption and energy costs are input into the tool. “By entering seven or eight variables you can benchmark an office building in about five minutes,” says Richard Tesoriero, senior mechanical engineer, Steven Winter Associates, Norwalk, Conn.

The tool is comprised of statistically representative models that compare a building against similar buildings from a national survey, known as the Commercial Building Energy Consumption Survey (CBECS). The survey gathers data on building characteristics and energy use from thousands of buildings across the United States every four years.

The model calculates energy usage per square foot and provides a percentile ranking from 1 to 100 of the building’s energy performance relative to similar buildings. A rating of 60 indicates that from an energy consumption standpoint the building performs better than 60 percent of all similar buildings.

“If you are above the 75th percentile you are in a position to get some recognition through an Energy Star plaque or by pursuing a certification like LEED for Existing Buildings,” Tesoriero explains.

Retro-commissioningA retro-commissioning process investigates how a building is maintained and operated in order to identify ways to optimize building performance as well as increase energy efficiency and reduce operating costs.

[ Page 1 of 2 ]
----- Advertising -----
Dodge Lead Center
Search for local construction projects OR CALL 877-234-4246 and get a FREE Lead Now!
Search by Project Type & State





----- Advertising -----
 Reader Comments:

Sign in to Comment

To write a comment about this story, please sign in. If this is your first time commenting on this site, you will be required to fill out a brief registration form. Your public username will be the beginning of the email address that you enter into the form (everything before the @ symbol). Other than that, none of the information that you enter will be publically displayed.

We welcome comments from all points of view. Off-topic or abusive comments, however, will be removed at the editors’ discretion.