Reading Municipal Light Department Selects Tantalus Systems to Accelerate Grid Modernization

Deployment includes TRUSense Gateway(TM) to help improve grid reliability, efficiency and sustainability

Burnaby, British Columbia–(Newsfile Corp. – March 24, 2025) – Tantalus Systems (TSX: GRID) (OTCQX: TGMPF) (“Tantalus”), a smart grid technology company, today announced its strategic partnership with Reading Municipal Light Department (“RMLD”), a leading municipal electric utility in Massachusetts, to modernize RMLD’s distribution grid. This significant investment aligns with RMLD’s core mission to enhance reliability, lower costs and utilize increasingly non-carbon energy for its customers.

The Tantalus Grid Modernization Platform™ (“TGMP™”) will play a pivotal role in transforming RMLD’s infrastructure into a forward-looking, multi-directional grid. By leveraging TGMP’s advanced smart grid architecture, the department will integrate connected devices, communications networks, grid data management, applications, and analytics into its operations and services. This comprehensive approach will provide greater levels of visibility, command, and control across the entire grid, ensuring seamless integration of Information Technology (IT) and Operational Technology (OT) systems.

“We are excited to collaborate with Tantalus Systems to accelerate the modernization of our distribution grid,” said Gregory Phipps, General Manager of RMLD. “This partnership represents another significant step forward as we continue to provide reliable, low-cost, and increasingly non-carbon energy to our customers. By harnessing the power of data, we aim to enhance customer satisfaction while adapting to a more dynamic energy market.”

RMLD’s engagement of Tantalus will bring significant benefits for the utility in the areas of data interoperability, operational efficiency, and sustainability. The TRUSync™ Grid Data Management System will automate the integration of grid data across devices and systems. The enhanced automation provided by TGMP will help RMLD improve power quality, proactively address outages, and optimize resource allocation. Over time, RMLD’s modernized grid will support the integration of distributed energy resources (DERs) and electric vehicles through the TRUSense Cellular Gateway, further aligning with the department’s goals.

“Tantalus is committed to helping utilities like RMLD achieve their grid modernization goals,” said Peter Londa, President and CEO of Tantalus. “Our solutions are purpose-built to help utilities boost operational efficiency, reduce carbon emissions, and provide enhanced services to their communities. We are excited to partner with the team at RMLD to ensure a successful implementation and long-term success for their utility.”

About Reading Municipal Light Department
Established in 1894, Reading Municipal Light Department (RMLD) is a municipal electric utility serving over 70,000 residents in Reading, North Reading, Wilmington, and Lynnfield Center, Massachusetts. RMLD is the largest of the 41 municipal light departments in Massachusetts based on electricity load, is not-for-profit, and is locally owned and controlled. RMLD is committed to serving our customers with reliable, low-cost, and increasingly non-carbon energy. For more information visit www.rmld.com.

About Tantalus Systems Holding Inc. (TSX: GRID) (OTCQX: TGMPF)
Tantalus is a technology company dedicated to helping utilities modernize their distribution grids by harnessing the power of data across all their devices and systems deployed throughout the entire distribution grid. Our company offers a grid modernization platform across multiple levels: intelligent connected devices, communications networks, data management, enterprise applications and analytics. Our solutions provide utilities with the flexibility they need to get the most value from existing infrastructure investments while leveraging advanced capabilities to plan for future requirements. Learn more at www.tantalus.com.

Forward-Looking Information:
This news release includes information, statements, beliefs and opinions which are forward-looking, and which reflect current estimates, expectations and projections about future events, including, but not limited to, the ability of Tantalus’ solutions to boost operational efficiency, reduce carbon emissions, and provide enhanced services and customer satisfaction to RMLD’s customers, the benefits of the Company’s solutions in the areas of data interoperability, operational efficiency, and sustainability, the performance of Tantalus hardware and software in allowing RMLD to realize its grid modernization goals, and other statements that contain words such as “believe,” “expect,” “project,” “should,” “seek,” “anticipate,” “will,” “intend,” “positioned,” “risk,” “plan,” “may,” “estimate” or, in each case, their negative and words of similar meaning. By its nature, forward-looking information involves a number of risks, uncertainties and assumptions that could cause actual results or events to differ materially from those expressed or implied by the forward-looking information. These risks, uncertainties and assumptions could adversely affect the outcome of the plans and events described herein. Readers should not place undue reliance on forward-looking information, which is based on the information available as of the date of this news release and Tantalus disclaims any intention or obligation to update or revise any forward-looking information contained in this new release, whether as a result of new information, future events or otherwise, unless required by applicable law. The forward-looking information included in this news release is expressly qualified in its entirety by this cautionary statement.

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