2023 Sustainability Report: Empire State Realty Trust

24

ENVIRONMENTAL

INTRODUCTION

SUSTAINABILITY OBJECTIVES AND STRATEGY

SOCIAL

POLICIES AND TRANSPARENT REPORTING

APPENDICES

Energy Performance

ENERGY AND EMISSIONS REDUCTION PROJECTS IN 2023 • Building Management System (BMS) upgrades across portfolio • Master Systems Integrator (MSI) development and implementation across portfolio • First tenant space construction completed to ESRT Net Zero 2.0 Standards including variable refrigerant flow (VRF), energy recovery ventilator (ERV), and heat pump source • Heat exchanger installation at Empire State Building • Heat pump installation underway at Empire State Building and 250 W. 57 th Street • Tenant and common area lighting upgrades • Tenant plug load control installations

2023 ENERGY CONSUMPTION DISTRIBUTION 7 (MWh)

ENERGY

Steam: 35,368

Electricity: 99,163 Commercial: 93,778 Multifamily: 5,385

Commercial: 35,368

164,826 MWh

We focus our efforts on ROI- driven energy efficiency strategies, cutting-edge technology, and advanced analytics to achieve

Fuel: 30,295

Commercial: 18,963 Multifamily: 11,332

portfolio-wide quantifiable performance improvements.

7.5%

decrease in energy consumption compared to 2022

100% of portfolio electricity has been offset through the purchase of Green-e certified wind power renewable energy credits 100% of non-electric energy usage, including steam, natural gas, and fuel oil has been offset through the preservation of 9,000 acres of biodiverse forest

LIKE-FOR-LIKE ENERGY USE INTENSITY 7 (kBtu/ft 2 )

82.9

62.5

57.8 55.9

58

57

2020

2021

2022

2023

2023

2023

7 ESRT commercial office utilization increased approximately 30% over a five-day average (Monday–Friday) and three-day average (Tuesday–Thursday) in 2023 compared to 2022. This occupancy increase contributes to increased emissions, energy and water usage, and waste generation. The data above represents the utility usage of our office and multifamily portfolio. Data is absolute, and is not normalized for weather, occupancy, or other variables which impact usage and are not based on the impacts of efficiency efforts. Like-for-like metrics include properties owned for full calendar year 2022 and 2023.

EMPIRE STATE REALTY TRUST: 2023 SUSTAINABILITY REPORT

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