Energy Efficiency and Electrification Measure Documentation
All measures detailed below have been developed through the End Use Savings Shapes project.
The measure documentation describes the modeling methodology, assumptions, relevant ComStock baseline features, and observations from results.
The assumptions used for the measures represent one of multiple possible approaches for a technology. They are intended to be reasonable but not necessarily optimal. Assumptions can be modified as our understanding of the technologies improves. The ComStock model is continuously updated with new information, methods, and improved quality assurance/quality control procedures.
New datasets are released in 6-month increments and include new upgrade measures as well as updates to the ComStock baseline model. Each dataset release is introduced with a webinar presentation. The webinars provide an overview of the ComStock process, high-level national observations for each new upgrade measure, and guidance for accessing various features of the dataset. Note that each new dataset release includes all existing measures from the previous releases.
Join our mailing list to receive notifications on upcoming releases and for invitations to the live webinar presentations.
2024 Release 1 (March 2024)
Webinar Recording and Slides
Measure Documentation
- Economizers
- Variable Refrigerant Flow with 25% Upsizing Allowance for Heating
- Improved Fan Scheduling and Control of Outdoor Air During Unoccupied Periods
- Heat Pump RTU with Exhaust Air Energy Recovery
- Advanced Rooftop Unit Control
- Central Ground-Source Water-to-Water Heat Pump
- Packaged Water-to-Air Geothermal Heat Pump
- Ground-Coupled Console Water-to-Air Heat Pump
- Electric Kitchen Equipment
- Thermostat Control for Load Shedding
- Thermostat Control for Load Shifting
- Comprehensive Geothermal Heat Pump Package – Hydronic GHP, Packaged GHP, or Console GHP
- Package 5 – Variable Speed HP RTU or HP Boilers + Economizer + DCV + Energy Recovery
Supplemental Documentation
2023 Release 2 (September 2023)
Webinar Recording and Slides
Measure Documentation
- Heat Pump RTU with Original Fuel Backup
- Air-Source Heat Pump Boiler and Natural Gas Boiler Backup
- VRF Heat Recovery with DOAS
- Demand Control Ventilation
- Exhaust Air Heat/Energy Recovery
- Package 1 - Wall and Roof Insulation and New Windows
- Package 2 - LED Lighting, HP-RTU and ASHP-Boiler
- Package 3 - Wall and Roof Insulation, New Windows, LED Lighting, HP-RTU and ASHP-Boiler