APPENDICES
INTRODUCTION
ENVIRONMENTAL
CORPORATE CITIZENSHIP
GOVERNANCE AND TRANSPARENT REPORTING
About this Report
Technology and Innovation Partners
GRI Content Index
Data Tables
Forward-Looking Statements
Third-Party Verification
ISSB Index
ISSB IFRS S2 Industry-Based Disclosure
References and Remarks (Unless otherwise specified, references are made to sections of the 2025 Sustainability Report)
Metrics
ENERGY MANAGEMENT
Energy consumption data coverage as a percentage of total floor area, by property sector (1) Total energy consumed by portfolio area with data coverage; (2) percentage grid electricity; and (3) percentage renewable, by property sector Like-for-like percentage change in energy consumption for the portfolio area with data coverage, by property sector Percentage of eligible portfolio that (1) has an energy rating; and (2) is certified to ENERGY STAR, by property sector Description of how building energy management considerations are integrated into property investment analysis and operational strategy
Total energy consumption data coverage from the Empire State Realty Trust operational portfolio, as a percentage of total/gross floor area was equal to 100% in 2025.
(1) ESRT’s total 2025 energy consumed by portfolio area with data coverage was equal to 158,523 MWh. (2) The percentage of total energy corresponding to grid electricity for all property types was 100%.
(3) The percentage of total energy corresponding to onsite renewable energy for all property types was 0.0%, however ESRT purchased 84,140 MWh of Renewable Energy Credits from wind power to offset our electricity consumption and purchased approximately 47,000 acres of biodiverse forest in New York State to reduce annual emissions by 19,174 mtCO 2 e. Total like-for-like change in energy consumption for the ESRT NYC office portfolio was 2.6% increase compared to 2024 when absolute and a 2.4% decrease compared to 2024 when normalized for weather, occupancy, tenant typology, and other variables that impact usage.
(1) 100% of ESRT's operational office, retail, and multifamily portfolio is benchmarked using ENERGY STAR Portfolio Manager. (2) 93% of ESRT's entire portfolio obtained ENERGY STAR Certification and 100% of ESRT's NYC office portfolio obtained ENERGY STAR Certification in 2025.
ESRT utilizes Real Time Energy Management (RTEM) to integrate building energy management considerations into property investment analyses and their operational strategy. Real-time energy consumption feedback allows ESRT to realize cost and energy savings opportunities. ESRT has partnered with The New York State Energy Research and Development Authority (NYSERDA) to implement RTEM incentives for control upgrades, chiller plant optimization, tenant energy management, tenant air handling units, lighting controls, plug load monitoring, and ongoing services that use predictive analysis and diagnostic. ESRT has also developed an Energy and Greenhouse Gas Management Policy that holds Portfolio Managers, Property Managers, Tenant Services Coordinators, and the Engineering Managers responsible for knowing their best practices and implementing the policy where possible for all assets under ESRT’s control. Portfolio managers are required to request updated Demand Response Plans from managers quarterly. The Energy Management Policy entails best practices such as tracking consumption through ENERGY STAR Portfolio Manager (ESPM), and conducting building energy audits that meet both the requirements of the ASHRAE preliminary energy use analysis and an ASHRAE Level 4 energy survey analysis identified in the ASHRAE Procedures for Commercial Building Energy Audits or equivalent.
75 EMPIRE STATE REALTY TRUST 2025 CORPORATE SUSTAINABILITY REPORT
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