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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