ENVIRONMENTAL
INTRODUCTION
CORPORATE CITIZENSHIP
GOVERNANCE AND TRANSPARENT REPORTING
APPENDICES
Roadmap to Building Efficiency
Targets and Performance Sustainability Guidelines and Policies
Energy
Data-Driven Performance Innovation ESRT Version 2.0 GHG Emissions
Water
Waste Healthy Buildings Biodiversity Tenant Engagement
Roadmap to Building Efficiency
September Began development of Empire State Building Version 1.0 deep energy retrofit study 2007
2009
2010
2011
2012
April Announced Empire State Building 1.0 groundbreaking retrofit and provided the industry with a free open-protocol blueprint of what is technically and economically possible December Implemented High Performance Design and Construction Guidelines in all leases, which required all Empire State Building projects to be designed and built to perform at the highest level of efficiency and environmental responsibility
January Implementation of
January Purchased Green-e certified wind RECs to offset 100% of the Empire State Building’s electricity usage
January Integrated operational best practices from Empire State Building 1.0 into portfolio standards Developed the Tenant Energy Optimization Program based on our work to demonstrate tenants’ role in energy reduction and to model and prove the business case for highly efficient sustainable tenant spaces. The program was gifted to Urban Land Institute (ULI) to scale
Version 1.0 projects begin at Empire State Building
2025
2019
2022
2023
2024
2021
January Updated sustainability standard operating procedures for the portfolio to align with latest technological and engineering advancements and green building certifications October Began development of ESRT Version 2.0 roadmap
January Purchased Green-e wind RECs to offset 100% of the commercial office portfolio’s electricity usage April Empire State Building 2.0 roadmap case study completed Set deep energy retrofit targets for the Empire State Building by 2030 October Four commercial building 2.0 roadmap studies completed
January Achieved carbon neutrality across portfolio through a combination of operational emissions reduction and validated offsets
October Multifamily 2.0 roadmap studies completed Set 2.0 deep energy retrofit targets for multifamily portfolio by 2035
June Published expansion of our Playbook with NYSERDA to share all ESRT properties, including multifamily 2.0 studies December Completed heat exchangers and lobby heat pump installations at Empire State Building
August Partial electrification achieved at 111 W 33rd, 250 W 57th, and Empire State Building with completion of heat pump installations December Substantial completion of BMS upgrades and smart building operating system, FDD, and digital maintenance and commissioning to energy management and analytics throughout the commercial portfolio
April Announced ESRT 2.0 engineering study and published the Empire Building Playbook October Completed all NYC commercial 2.0 engineering roadmap studies
31 EMPIRE STATE REALTY TRUST 2025 CORPORATE SUSTAINABILITY REPORT
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