Arizona Tribune - Dalrada Technology Group, Inc. Validates Clean Energy Leadership with Co-Authored Study from Oak Ridge National Laboratory

Brian Bonar, Dalrada CEO and Chairman, stated, "The study validates the direction of Dalrada's engineering roadmap. CO₂ heat pumps are proving to be a powerful solution for real-world decarbonization, and collaborating with Oak Ridge National Laboratory, this highlights our commitment to delivering next-generation clean energy technologies. We are excited to help accelerate the transition to high-efficiency, low-GWP heating and cooling around the world."

The published study, titled "Comparative Performance Assessment of Air-Source and Ground-Source Heat Pumps Using CO₂ and R-410A with Water Well Integration: A Simulation Study," provides detailed scientific evidence supporting CO₂ as a high-performance refrigerant capable of reliable operation in extreme conditions. In nationwide simulations, CO₂ ground-source heat pumps (GSHPs) maintained approximately 87% efficiency and 85.5% heating capacity as temperatures dropped from 47°F to -15°F, while air-source heat pumps (ASHPs) retained only 55% efficiency and 44.5% capacity under identical conditions. The systems also delivered 35-45% national energy savings compared to conventional ASHP configurations.

As high-GWP refrigerants such as R-410A continue to undergo phase-down across the U.S., UK, and Europe, the study reinforces CO₂ (R744) as a highly sustainable and future-ready alternative. The findings highlight CO₂'s performance advantages across varied climates as well as its compatibility with groundwater and water-well infrastructure-demonstrating strong potential for deployment in both new construction and retrofit environments.

Dalrada engineers' direct involvement in the study supports the Company's ongoing strategy to develop and commercialize scalable, low-GWP climate technologies that meet evolving global energy mandates. By validating the feasibility and performance of CO₂ ground-source systems, Dalrada continues advancing the next generation of high-efficiency heat pump platforms aligned with international sustainability objectives and market demand.

This research was funded by the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy, with support from the Building Technologies Office program managers.

The abstract is available on ScienceDirect:

Journal of Building Engineering | DOI: https://doi.org/10.1016/j.jobe.2025.114453

For more information about Dalrada Technology Group, Inc., the Company recommends that stockholders, investors, and any other interested parties read the Company's public filings and press releases available at www.dalrada.com.

About Dalrada Technology Group

Dalrada Technology Group, Inc. (formerly known as Dalrada Financial Corporation, Ticker:DHTI) is a publicly traded, multinational technology company that develops, manufactures, and markets a diverse portfolio of innovative products and services across the Clean Energy and Semiconductor & Electronics sectors.

Dalrada's core segments include Climate Technology, which delivers advanced heat pump systems for industrial, commercial, and residential applications; Semiconductor & Electronics, providing next-generation PVD and CVD deposition systems, modernization for legacy tools, real-time plasma diagnostics, and integrated services and components that support semiconductor manufacturing environments. By integrating these core segments under one unified group, Dalrada Technology Group accelerates innovation, advances sustainability, and delivers long-term value for its shareholders.

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Contact: [email protected]

FORWARD-LOOKING STATEMENTS CAUTIONARY NOTICE

This letter contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These statements are based on current expectations, estimates, and projections about the Company's business and the industries in which it operates, and include, without limitation, statements regarding future growth, operational improvements, market opportunities, product traction, sales, installations, partnerships, cost reductions, profitability, shareholder value, and positioning in renewable energy, heat pumps, atmospheric water generators, and semiconductor markets. Forward-looking statements are subject to risks, uncertainties, and other factors, many of which are beyond the Company's control and could cause actual results to differ materially from those contemplated by these statements. These risks include, but are not limited to: delays or failures in product development, manufacturing, or commercialization; regulatory changes or delays (including those related to electrification mandates or environmental standards); competition in our various markets including, but not limited to, heat pump and semiconductor markets; supply chain disruptions; customer adoption rates; execution risks in restructuring and cost-reduction efforts; ability to secure additional orders or scale operations; dependence on key partners; liquidity and capital constraints typical of micro-cap OTC companies; potential need for additional financing; compliance with OTC Markets disclosure requirements; general economic conditions; and other risks detailed in the Company's public filings with the SEC and OTC Markets, including the Form 10-K for the year ended June 30, 2025, and subsequent reports. The Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by law. Investors are cautioned not to place undue reliance on these forward-looking statements.

SOURCE: Dalrada Technology Group, Inc.

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A.Williams--AT