2023 Sustainability Report: Empire State Realty Trust

27

ENVIRONMENTAL

INTRODUCTION

SUSTAINABILITY OBJECTIVES AND STRATEGY

SOCIAL

POLICIES AND TRANSPARENT REPORTING

APPENDICES

Water Performance

2023 WATER CONSUMPTION 8 (m 3 )

WATER

491,491

492,992

318,388

297,835

The reduction of water consumption in buildings reduces overall environmental impact, drives operational cost savings, and reduces risk from fluctuations in water supply. Water usage reduction and water runoff quality and quantity management are critical issues for NYC and for ESRT as a recipient of the municipal water supply. We address each of these through water processing, water fixtures, green roofs, and native xeriscape planting. In 2023, we received the DOE’s Better Building Challenge Water Goal Achiever status with 97% passing data checks and 27% water use intensity improvement.

Commercial 366,162 Multifamily 125,329

Commercial 367,882 Multifamily 125,109

2020

2021

2022

2023

0.31%

increase in water consumption compared to 2022

LIKE-FOR-LIKE WATER USE INTENSITY (kgal/ft 2 )

0.0132 0.0134

0.0091

0.0084

2020

2021

2022

2023

0.0134 Kgal/ft 2

2023 water use intensity

8 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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