ENVIRONMENTAL
INTRODUCTION
SUSTAINABILITY OBJECTIVES AND STRATEGY
CORPORATE CITIZENSHIP
GOVERNANCE AND TRANSPARENT REPORTING
APPENDICES
ENERGY PERFORMANCE
2024 ENERGY CONSUMPTION DISTRIBUTION 5 (MWh)
ENERGY REDUCTION PROJECTS IN 2024 • Building Management System (BMS) advanced upgrades across portfolio • ASHRAE Guideline 36 high performance controls sequence for optimal performance • Master Systems Integrator (MSI) energy analytics and optimization development and implementation across portfolio • Tenant spaces designed and constructed to ESRT 2.0 efficient standards, including variable refrigerant flow (VRF), energy recovery ventilator (ERV), and heat pump source technologies • Heat exchanger installations at Empire State Building • Heat pump installation underway at Empire State Building, 250 West 57th Street, and 111 West 33rd Street as end of life chiller replacement projects
decrease in energy consumption compared to 2023
9.6%
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 9,000 acres of biodiverse forest managed by the U.S. Department of Forestry. We focus our efforts on ROI-driven energy-efficiency strategies, cutting-edge technology, and advanced analytics to achieve portfolio-wide quantifiable performance improvements.
Steam: 33,376 Commercial: 33,376 Multifamily: 0
Electricity: 90,883 Commercial: 85,399 Multifamily: 5,484
148,965 MWh
Fuel: 24,706 Commercial: 15,360 Multifamily: 9,346
LIKE-FOR-LIKE ENERGY USE INTENSITY 5 (kBtu/ft 2 ) NYC Commercial Office
58.4
56.2
55.6
53.5
2021
2022
2023
2024
5 Occupancy increased by 16.6% at the Empire State Building and 12.9% across the commercial portfolio year on year in 2024 compared to 2023. The NOAA Central Park NYC data center reported Heating Degree Days (HDDs) increased by 5% and Cooling Degree Days (CDDs) increased by 10% from 2023 to 2024. This increase in occupancy, HDDs, and CDDs contributes to increased energy and water usage and emissions. The consumption data above represents the utility usage of ESRT’s commercial and multifamily portfolio that was owned for the full calendar year 2024. 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 commercial office properties owned for the full calendar years of 2021 to 2024.
19
2024 SUSTAINABILITY REPORT
Made with FlippingBook. PDF to flipbook with ease