ENVIRONMENTAL
INTRODUCTION
CORPORATE CITIZENSHIP
GOVERNANCE AND TRANSPARENT REPORTING
APPENDICES
ESRT Version 2.0
Targets and Performance Sustainability Guidelines and Policies
Energy
Data-Driven Performance Innovation
GHG Emissions
Roadmap to Building Efficiency
Water
Waste Healthy Buildings Biodiversity Tenant Engagement
CASE STUDY
Measures Implemented Projects underway or completed as part of 2.0 work include advanced controls upgrades, building optimization analytics and automation, heat pump systems to reduce both steam and electric consumption, heat exchangers to optimize energy usage across all building zones, and energy recovery ventilators to deliver fresh air and greater efficiency.
ESB Retrofit Case Study Development of Retrofit Playbook for Large Buildings
2020
HIGH ZONE
Results and Recommendations Incorporated into Capital Planning
Zonal AHU
2021
Zonal Electric Chillers
Chilled Water Loop
Condenser Water Loop
Project Team Engagement Tenant Design Guidelines, Flowcharts, Fitout Reviews, Specifications
Unitary HPWH
MID-ZONE
Steam Radiators
Zonal AHU
ESB Package 1 Central Plant and Steam Optimization
Heat Exchangers
Low Temp Hot Water
ESB Package 2 Steam Condensate Recovery and Water-Source Heat Pump for Lobby
2022
LOW ZONE
Zonal AHU
2-Pipe Steam System
ESB Package 3 Alerton Conversion and Perimeter Heating Controls
ESB Package 4 Air-Source Heat Pump and Heating Hot Water Riser (Phase 1)
Cooling Towers
2023
Lobby: Waterside Heat Recovery
Air Source Heat Pump
ESB Package 5 BMS Upgrades to Distech - G36 for Central Plant and AHUs
2024
Retail Tenants Control Water Temp for WSHP Heating
District Steam
Steam Station
ESB Package 6 High Zone Steam Chiller Replacement with Electric
2025
Heating
Cooling
Ventilation
27 EMPIRE STATE REALTY TRUST 2025 CORPORATE SUSTAINABILITY REPORT
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