Deployment and Demonstration of a Novel DC-Coupled HVAC Technology in the Central Valley
Summary
SCH Number
2025051283
Public Agency
California Energy Commission
Document Title
Deployment and Demonstration of a Novel DC-Coupled HVAC Technology in the Central Valley
Document Type
NOE - Notice of Exemption
Received
Posted
5/29/2025
Document Description
The proposed project aims to develop and demonstrate a DC-fed HVAC module powered by onsite DC-coupled solar photovoltaic (PV) systems and energy storage, utilizing a novel DC hub architecture. The demonstration will take place at a commercial building in Fresno County, California. This innovative architecture provides a cost-effective method for powering DC-fed HVAC units using onsite renewable energy, with the capability to seamlessly switch to grid power when solar or storage resources are unavailable, at no additional cost.
The purpose of this project is to validate the feasibility of a DC-fed HVAC system packaged with off-the-shelf DC brushless motors and components. The system will operate as part of a highly controlled DC nanogrid, interfacing with Intertie's existing DC-coupled solar-plus-storage solution. By leveraging DC hub technology, this project aims to help California achieve critical energy goals for commercial buildings, including zero-net energy (ZNE), zero-net grid impact, and zero carbon emissions.
The project addresses the challenges of meeting California's goal of achieving ZNE in 50% of commercial buildings by 2030. Since HVAC systems are among the largest consumers of electricity in commercial buildings, this initiative demonstrates how advanced DC-fed HVAC technology, coupled with solar PV and energy storage, can
significantly enhance efficiency, reduce grid dependency, and eliminate HVAC loads during peak demand periods.
The primary beneficiaries of this project include commercial building owners, operators, and occupants, who will gain access to more efficient, reliable, and cost-effective HVAC solutions. Additionally, the project supports California's broader environmental and energy objectives by advancing technologies that reduce carbon emissions and grid impact, ensuring a sustainable energy future for the state.
Contact Information
Name
Harrison Reynolds
Agency Name
California Energy Commission
Job Title
Associate Energy Specialist
Contact Types
Lead/Public Agency
Phone
Name
Richard Mrlik
Agency Name
Intertie
Job Title
Project Manager
Contact Types
Project Applicant
Phone
Email
Location
Coordinates
Cities
Clovis
Counties
Fresno
Regions
Citywide
Cross Streets
1239 Hoblitt Ave and Sunnyside Ave
Zip
93612
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Cal. Code Regs. tit. 14, sect. 15301
Reasons for Exemption
This project fits within Cal. Code Regs. tit. 14, sect. 15301 because it involves minor alteration and installation of equipment at an existing facility, with no expansion of capacity. This installation is at an existing, developed site on land that is not environmentally sensitive. No historical resources or buildings will be affected. Noise and odors will not be generated by these installations in excess of existing permitted amounts. The installation will not increase traffic to these sites and will not require permits for air, water, conditional use, building expansion, hazardous waste, or rezoning.
Exempt Status
Categorical Exemption
Type, Section or Code
Cal. Code Regs. tit. 14, sect. 15304
Reasons for Exemption
Additionally, Cal. Code Regs., tit. 14; 15304 applies as this project will involve minor trenching and laying of concrete bases. This will not make any alterations to water or vegetation.
Attachments
Notice of Exemption
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