ENVIRONMENTAL
INTRODUCTION
CORPORATE CITIZENSHIP
GOVERNANCE AND TRANSPARENT REPORTING
APPENDICES
Energy
Targets and Performance Sustainability Guidelines and Policies
Data-Driven Performance Innovation ESRT Version 2.0 GHG Emissions
Roadmap to Building Efficiency
Water
Waste Healthy Buildings Biodiversity Tenant Engagement
Energy Performance
We focus our efforts on ROI-driven energy-efficiency strategies, cutting-edge technology, and advanced analytics to achieve portfolio-wide quantifiable performance improvements.
2025 Energy Consumption (MWh) 7
Energy Reduction Projects in 2025 • Building Management System advanced upgrades across portfolio • ASHRAE Guideline 36 high performance controls sequence for optimal performance • Master Systems Integrator energy analytics and optimization development and implementation across portfolio • Tenant spaces designed and constructed to ESRT 2.0 efficient standards, which include variable refrigerant flow, energy recovery ventilator, and heat pump source technologies • New efficient high zone chiller at Empire State Building • Heat exchanger installations at Empire State Building • Heat pump installations completed at Empire State Building, 250 West 57th Street and 111 West 33rd Street, as end-of-life chiller replacement projects
100% of portfolio electricity has been offset through the purchase of Green-e certified wind power RECs 100% of non-electric energy usage has been offset through the preservation of 47,000 acres of biodiverse forest in New York State
35,061 Steam
Oce: 35,061 Multifamily: 0 Retail: 0
93,030 Electricity
158,523 MWh
30,433 Natural Gas and Fuel Oce: 17,242 Multifamily: 12,816 Retail: 375
Oce: 82,610 Multifamily: 5,297 Retail: 5,123
Like-for-Like Energy Use Intensity 7 (kBtu/ft 2 ) NYC Office
2.4% decrease in energy consumption compared to 2024 when normalized 8
2.6%
58.3
57.2
56.2
55.0
consumption compared to 2024 when absolute 7 increase in energy
2022
2023
2024
2025
7 Occupancy increased by 11% at the Empire State Building and 8% across the office portfolio year on year in 2025 compared to 2024. The NOAA Central Park NYC data center reported Heating Degree Days (HDDs) increased by 18% and Cooling Degree Days (CDDs) increased by 7% from 2024 to 2025. This increase in occupancy, HDDs, and CDDs contributes to increased energy usage and emissions. The consumption data above represents the utility usage of ESRT’s total portfolio — office, retail and multifamily — that was owned for the full 2025 calendar year and Metro Center, a CT office building disposed on December 22, 2025. Empire State Building data does not include broadcast consumption. Data is absolute and is not normalized for weather, occupancy, tenant typology, or other variables that impact utility usage apart from efficiency initiatives. Like-for-like metrics represent ESRT’s NYC office properties owned for the full calendar years of 2022 to 2025. 8 Data is normalized for weather, occupancy, tenant typology and other variables that impact utility usage.
18 EMPIRE STATE REALTY TRUST 2025 CORPORATE SUSTAINABILITY REPORT
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