TerraInnovatum Partners with Ameresco to Jointly Pursue Public-Private Commercial Opportunities in the U.S. and Global Markets to Deploy SOLO Micro-Modular Reactors

Rhea-AI Summary

Terra Innovatum (NASDAQ:GSRT) has signed a memorandum of understanding (MOU) with Ameresco (NYSE:AMRC) to establish a comprehensive framework for deploying SOLO™ micro-modular nuclear reactors. The partnership aims to deploy 50 SOLO™ reactor units across federal and commercial sites in the U.S.

The collaboration leverages Ameresco's national network and expertise for siting, development, construction, integration, operation, and decommissioning planning of the SOLO™ reactors. This strategic partnership represents a significant milestone in Terra Innovatum's path to commercialization, combining their innovative reactor technology with Ameresco's extensive experience in delivering advanced energy solutions.

Positive

• Strategic partnership with established energy solutions provider Ameresco
• Target deployment of 50 SOLO reactor units across federal and commercial sites
• Access to Ameresco's extensive national network for siting opportunities
• Multi-tiered market approach targeting both government and private sector opportunities

Negative

• Project still in early MOU stage without binding commitments
• Deployment timeline and financial terms not disclosed
• Complex regulatory and approval process for nuclear reactor deployment

Insights

Nuclear Energy Industry Analyst

Terra Innovatum's partnership with Ameresco targets deploying 50 SOLO reactors, significantly advancing commercialization of their micro-modular nuclear technology.

This MOU between Terra Innovatum and Ameresco represents a potentially significant step in the commercialization pathway for Terra Innovatum's SOLO micro-modular reactor technology. The agreement establishes a comprehensive framework covering the entire lifecycle of these reactors—from siting and development to eventual decommissioning.

The partnership targets the deployment of 50 SOLO reactor units across federal and commercial sites, leveraging Ameresco's established presence in energy infrastructure projects, particularly within federal contracts. This scale of deployment would mark a substantial commercial milestone for Terra Innovatum's technology.

For context, micro-modular reactors represent an emerging class of nuclear technology designed to provide localized power generation with smaller footprints and potentially streamlined regulatory pathways compared to traditional nuclear plants. The market opportunity for such systems includes remote locations, military installations, and commercial facilities requiring reliable baseload power.

Ameresco brings considerable value as a partner through its established network of relationships with federal agencies and commercial clients, plus expertise in energy project development. Their involvement suggests the SOLO technology may be approaching commercial readiness, though the press release doesn't specify a timeline for deployments.

It's worth noting this announcement comes as Terra Innovatum is pursuing a public listing through a SPAC merger with GSR III Acquisition Corp. The Ameresco partnership potentially strengthens Terra Innovatum's commercial proposition ahead of becoming a public company, providing a more defined path to market for their technology.

• Comprehensive framework to evaluate siting, development, construction, integration, operation, and decommissioning planning for SOLO™ reactors

• Harnessing Ameresco’s U.S. network and expertise for siting opportunities, agreement targets deployment of 50 SOLO™ reactors across federal and commercial sites

NEW YORK and AUSTIN, Texas, Sept. 29, 2025 (GLOBE NEWSWIRE) -- Terra Innovatum Srl (“Terra Innovatum,” or the “Company”), a developer of micro-modular nuclear reactors, and GSR III Acquisition Corp. (Nasdaq: GSRT), a publicly traded special purpose acquisition company, today announced it has signed a memorandum of understanding (“MOU”) with Ameresco (NYSE: AMRC), a leading energy solutions provider, to establish a comprehensive framework for siting, development, construction, integration, operation, and decommissioning planning of the SOLO™ micro-modular reactor. The collaboration will leverage Ameresco’s national network and expertise to identify siting opportunities on public and private land, with a goal to secure the deployment of 50 reactor units across federal and commercial sites, marking a major step toward near-term commercial rollout of the SOLO™ reactor.

“Ameresco’s deep industry network and expertise in delivering a range of innovative energy solutions will play a crucial role in SOLO’s commercial deployment,” said Alessandro Petruzzi, CEO of Terra Innovatum. “Through Ameresco’s support to identify and secure sites to deploy SOLO reactor technology, we have an incredible opportunity to expand our reach and advance our vision and path to market. We are thrilled about the opportunity to work with such a global industrial leader in the sector.”

Giordano Morichi – Partner, Chief Business Development Officer & Investor Relations continued: “Our partnership with Ameresco provides a multi-tiered and diversified path to market, enabling parallel deployment as we pursue U.S. government and private sector opportunities and advance the commercialization of 50 SOLO reactor units. We are proud to work alongside one of the world’s leading energy solutions providers to address its critical security needs in the U.S. and beyond.”

“Ameresco brings decades of experience in delivering advanced energy solutions across federal and commercial markets,” said Nicole Bulgarino, President of Federal Solutions and Utility Infrastructure at Ameresco. “As we continue to focus on providing resilient energy infrastructure to our federal and commercial customers, we are excited to collaborate with Terra Innovatum and leverage their innovative technology to deliver critical power when and where it is needed most—supporting mission readiness and energy assurance in an evolving global landscape.”

ABOUT TERRA INNOVATUM & SOLO™

Terra Innovatum's mission is to make nuclear power accessible. We deliver simple and safe micro-reactor solutions that are scalable, affordable and deployable anywhere 1 MWe at a time.

Terra Innovatum is a pioneering force in the energy sector, dedicated to delivering innovative and sustainable power solutions. Terra Innovatum plans to leverage cutting-edge nuclear technology through the SOLO™ Micro-Modular Reactor (SMR™) to provide efficient, safe, and environmentally conscious energy. With a mission to address global energy shortages, Terra Innovatum combines extensive expertise in nuclear industry design, manufacturing, and installation licensing to offer disruptive energy solutions. Committed to propelling technological advancements, Terra Innovatum and SOLO™ are dedicated to fostering prosperity and sustainability for humankind.

It is anticipated that SOLO™ will be available globally within the next three years. Conceptualized in 2018 and engineered over six years by experts in nuclear safety, licensing, innovation, and R&D, SOLO™ addresses pressing global energy demands with a market-ready solution. Built from readily available commercial off-the-shelf components, the proven licensing path for SOLO™ enables rapid deployment and minimizes supply chain risks, ensuring final cost predictability. Designed to adapt with evolving fuel options, SOLO™ supports both LEU+ and HALEU, offering a platform ready to transition to future fuel supplies.

SOLO™ will offer a wide range of versatile applications, providing CO2-free, behind-the-meter, and off-grid power solutions for data centers, mini-grids serving remote towns and villages, and large-scale industrial operations in hard-to-abate sectors like cement production, oil and gas, steel manufacturing, and mining. It also has the ability to supply heat for industrial applications and other specialized processes, including water treatment, desalination and co-generation. Thanks to its modular design, SOLO™ can easily scale to deliver up to 1GW or more of CO2-free power with a minimal footprint, making it an ideal solution for rapidly replacing fossil fuel-based thermal plants. Beyond electricity and heat generation, SOLO™ can also contribute to critical applications in the medical sector by producing radioisotopes essential for oncology research and cancer treatment.

To learn more, visit: www.terrainnovatum.com.

CONTACTS
Giordano Morichi
Partner, Chief Business Development Officer & Investor Relations
Terra Innovatum Srl
E: g.morichi@terrainnovatum.com
W: www.terrainnovatum.com

Anantha Ramamurti
President, Chief Financial Officer
GSR III Acquisition Corp
E: anantha@gsrspac.com
P: (949) 468-7434

Nicholas Hresko-Staab
Vice President
Investor & Media Relations
Alliance Advisors IR
E: TerraIR@allianceadvisors.com

IMPORTANT INFORMATION FOR SHAREHOLDERS
This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or constitute a solicitation of any vote or approval.

PARTICIPANTS IN THE SOLICITATION
Each of the Registrant Parties, and their respective directors and executive officers, may be considered participants in the solicitation of proxies with respect to the potential transaction described in this communication under the rules of the SEC. Information about the directors and executive officers of GSRT is set forth in GSRT’s filings with the SEC. Information regarding other persons who may, under the rules of the SEC, be deemed participants in the solicitation of the shareholders in connection with the potential transaction and a description of their direct and indirect interests are set forth in the Registration Statement (and are included in the proxy statement/prospectus) and other relevant documents when they are filed with the SEC. These documents can be obtained free of charge from the sources indicated above.

FORWARD LOOKING STATEMENTS
The statements contained in this press release that are not purely historical are forward-looking statements. These forward-looking statements include, but are not limited to, statements regarding our expectations, hopes, beliefs, intentions or strategies regarding the future. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward-looking statements. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intends,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “would” and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking.

The forward-looking statements contained in this press release are based on our current expectations and beliefs concerning future developments and their potential effects on GSRT and the other Registrant Parties. There can be no assurance that future developments affecting GSRT and the other Registrant Parties will be those that we have anticipated. These forward-looking statements speak only as of the date this press release is delivered and involve a number of risks, uncertainties (some of which are beyond our control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements. Should one or more of these risks or uncertainties materialize, or should any of our assumptions prove incorrect, actual results may vary in material respects from those projected in these forward-looking statements. Factors that may cause actual results to differ materially from current expectations include, but are not limited to: (1) the occurrence of any event, change or other circumstances that could give rise to the termination of the definitive agreements with respect to the Business Combination; (2) the outcome of any legal proceedings that may be instituted against GSRT, any of the Registrant Parties, the combined company or others following the announcement of the Business Combination and any definitive agreements with respect thereto; (3) the inability to complete the Business Combination due to the failure to obtain approval of the shareholders of GSRT or to satisfy other conditions to closing; (4) changes to the proposed structure of the Business Combination that may be required or appropriate as a result of applicable laws or regulations or as a condition to obtaining regulatory approval of the Business Combination; (5) the ability of Pubco to meet stock exchange listing standards following the consummation of the Business Combination; (6) the risk that the Business Combination disrupts current plans and operations of Terra Innovatum as a result of the announcement and consummation of the Business Combination; (7) the ability to recognize the anticipated benefits of the Business Combination, which may be affected by, among other things, competition, the ability of the combined company to grow and manage growth profitably, maintain relationships with customers and suppliers and retain its management and key employees; (8) costs related to the Business Combination, including the reorganization described in the business combination agreement; (9) changes in applicable laws or regulations; (10) the possibility that the Registrant Parties or the combined company may be adversely affected by other economic, business, and/or competitive factors; (11) the amount of redemption requests made by GSRT shareholders and (12) other risk factors described herein as well as the risk factors and uncertainties described in the Form S-4 and GSRT’s other filings with the SEC, as well as any further risks and uncertainties to be contained in the proxy statement/prospectus filed after the date hereof. In addition, there may be additional risks that neither GSRT nor any of the other Registrant Parties presently know, or that GSRT or the other Registrant Parties currently believe are immaterial, that could also cause actual results to differ from those contained in the forward-looking statements. Nothing in this communication should be regarded as a representation by any person that the forward- looking statements set forth herein will be achieved or that any of the contemplated results of such forward-looking statements will be achieved. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made.

None of GSRT, the other Registrant Parties, or any of their respective affiliates, officers, employees or agents, makes any representation or warranty, either express or implied, in relation to the fairness, reasonableness, adequacy, accuracy, completeness or reliability of the information, statements or opinions, whichever their source, contained in this press release or any oral information provided in connection herewith, or any data it generates and accept no responsibility, obligation or liability (whether direct or indirect, in contract, tort or otherwise) in relation to any of such information. GSRT, the other Registrant Parties and their respective affiliates, officers, employees and agents further expressly disclaim any and all liability relating to or resulting from the use of this press release and any errors therein or omissions therefrom. Further, the information contained herein is preliminary, is provided for discussion purposes only, is only a summary of key information, is not complete and is subject to change without notice.

In addition, the information contained in this press release is provided as of the date hereof and may change, and neither GSRT nor the other Registrant Parties undertakes any obligation to update or revise any forward- looking statements, whether as a result of new information, inaccuracies, future events or otherwise, except as may be required under applicable securities laws.

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/4542a1c4-bb6b-486d-a18d-71e7a2aa08ca

FAQ

What is the partnership between Terra Innovatum (GSRT) and Ameresco?

Terra Innovatum has signed an MOU with Ameresco to establish a framework for deploying 50 SOLO™ micro-modular nuclear reactors across federal and commercial sites, including siting, development, construction, integration, operation, and decommissioning planning.

How many SOLO reactors will Terra Innovatum deploy under the Ameresco agreement?

The agreement targets the deployment of 50 SOLO™ reactor units across federal and commercial sites in the United States.

What is Ameresco's role in the Terra Innovatum SOLO reactor deployment?

Ameresco will leverage its national network and expertise to identify siting opportunities on public and private land, and support the development, construction, integration, operation, and decommissioning planning of SOLO™ reactors.

Who are the key executives involved in the Terra Innovatum-Ameresco partnership?

Alessandro Petruzzi (CEO of Terra Innovatum), Giordano Morichi (Partner, Chief Business Development Officer), and Nicole Bulgarino (President of Federal Solutions at Ameresco) are the key executives leading the partnership.