Key Achievements

SL Green is a proud industry leader in sustainability thanks to best-in-class operating performance.

We strive to maintain our position as a model of corporate citizenship, and our award-winning sustainability initiatives help minimize environmental impact, increase resiliency, engage with the local community, and create long-term value across our industry-leading portfolio.


We’ve garnered industry recognition for our market-leading achievements and workplace culture.

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Energy Star Partner of the Year – Sustained Excellence 2018, 2019, 2020

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Highest scoring Office REIT on the S&P 500


Top 5 Bloomberg ESG Score among all REITs listed on the S&P 500 and Russell 1000 Indices


Top 25% on MSCI's "Opportunities in Green Building" and "Human Capital Development" categories

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2020 Healthiest Employers Honoree

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"Low Risk" categorization in Sustainalytics ESG Risk Rating with a ranking in the top 5% among global peer set

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Top quartile on Refinitiv (formerly Thomson Reuters) ESG performance among all Commercial REITs worldwide

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Included on the S&P 500 and S&P Global 1200 ESG Indices

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Achieved a "5 Star" rating, GRESB's highest accolade

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Recipient of NYC Office of Service Changemaker Award

By the Numbers

When we say we’re making a positive impact on the community, we mean it— and the numbers back us up.


Portfolio-wide emissions intensity reduction goal (by 2025)


Of Tier I Critical Suppliers evaluated in an annual Supply Chain Risk Assessment

Investment in energy efficiency, including HVAC, BMS, and lighting upgrades as well as variable frequency drive installations (since 2010)

Energy Star-certified square footage across portfolio

Square footage pursuing the IWBI Health-Safety Rating

Investments in public transit improvements around Grand Central Terminal at our ground-up development, One Vanderbilt

Manhattan Operating Properties achieved a Green Building designation

Square feet connected to iES EnergyDesk, our real-time energy management platform


LEED-Certified buildings among Manhattan Operating Properties

iES WellStat devices throughout the portfolio will enhance our ability to efficiently maintain high indoor environmental quality for tenants

One Vanderbuilt

Case in Point

One Vanderbilt

Sustainable design in action. Wellness elements like natural light, quality air, and thermal comfort were integral components in the creation of this revolutionary new skyscraper, a Class-A office experience for tenants, visitors, and the local community. One Vanderbilt offers tenants not only the flexibility to adjust to the needs of a changing workforce, but superior building features and amenities including:

  • LEED Certification.
  • WELL Certification.
  • A 30,000-square foot amenity floor with healthy food offerings.
  • A conference center.
  • Indoor air quality that will surpass the ASHRAE 62.1 standard by 30%.
  • Quality water ensured by enhanced filtration.
  • 85% of tenant floor area with premier access to daylighting through floor-to-ceiling windows.
  • Movement, physical activity, and active living promoted through design strategies.
  • Maximum comfort ensured through HVAC system design and acoustical parameters.

All told, One Vanderbilt will have one of the smallest carbon footprints of buildings with similar density and scale in the city.


With 15 million LEED-certified square feet in its portfolio, SL Green has made a real impact on the environment. Our LEED volume efforts reduced energy consumption by 760,000 kilowatt-hours in 2018, equivalent to 560 metric tons of CO2 avoided per building or:

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120 cars being removed from the road.

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14,582 tree seedlings growing for 10 years.

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Powering 61 homes for a year.

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Saving 63,311 gallons of gasoline.

Six SL Green properties earned LEED Certifications last year by:

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Implementing LEED plans & policies in each building.

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Offsetting 16,675 megawatt-hours of electricity through wind power.

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Cutting average water consumption by one-third, saving 8 million gallons of water.

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Improving janitorial cleaning & paper product purchases meeting sustainability criteria to 76%.