Stem, Inc. (NYSE: STEM), a global leader in AI-enabled clean energy software and services, today announced that Voltares, an international renewable energy developer and investor, has selected Stem to deliver its integrated PowerTrack™ software and power plant controls for Marneuli-I, a 68 MW solar facility in the Republic of Georgia. Developed by Voltares, the project is the country’s first utility-scale solar facility and represents an important step in expanding Georgia’s renewable energy infrastructure.

“Voltares is taking an important step in advancing utility-scale solar development in Georgia, and we’re proud to support that vision,” said Matt Tappin, President of Software at Stem. “Projects like Marneuli-I require a technology partner that understands both plant performance and the complexities of connecting renewable energy to the grid. By bringing software, controls, and on-site hardware together through PowerTrack, we’re helping Voltares build the operational foundation for a reliable, high-performing asset. It’s a strong example of how our integrated approach can support renewable energy development in emerging markets.”

Located near Marneuli, approximately 40 kilometers south of Tbilisi, the project is expected to generate approximately 100 GWh of clean electricity annually, contributing to Georgia’s efforts to diversify its energy supply and expand domestic renewable energy generation. Voltares has also incorporated environmental and social management measures into the project’s development, including biodiversity protection, community engagement, and plans to enable continued agricultural use of the land through managed sheep grazing.

To support the long-term operating objectives, Stem will provide an integrated hardware and software solution built around PowerTrack, Stem’s operating system for clean energy. The platform combines site-wide monitoring, performance analytics, and real-time plant controls, giving Voltares centralized visibility and control over plant operations.

The solution includes a fully redundant power plant controller (PPC) architecture with primary and secondary control levels to maintain operational continuity in the event of a control component failure. The system will manage the facility’s output against a 50 MW maximum export limit and enable real-time telemetry and communications with Georgian State Electrosystem (GSE), Georgia’s transmission system operator, through the project’s 220 kV grid connection. These capabilities will help Voltares manage plant performance while meeting the technical requirements for connecting a utility-scale solar facility to Georgia’s national grid.

“Marneuli I is an important milestone for Voltares and a meaningful contribution to Georgia’s renewable energy development,” said Kilian Mayr, Project Manager at Voltares. “Seeing the project now approaching operation is especially rewarding and represents an important step in bringing one of our large-scale developments into long-term operation. Georgia has significant renewable energy potential, and Marneuli I demonstrates how that potential can be translated into reliable energy infrastructure. Our focus has been not only on delivering a high-quality solar plant, but on developing an asset that can operate efficiently and responsibly over the long term. Combining strong project development with the right technology and operational expertise is essential to achieving that, and our collaboration with Stem provides a solid foundation for the long-term performance of Marneuli I.”

Commissioning is scheduled in Q1 2027, leading directly into commercial operation.

Marneuli-I further expands Stem’s international utility-scale presence, building on recent PowerTrack deployments across Europe and Latin America. The project demonstrates Stem’s ability to support renewable energy developers across different markets through integrated software, controls, and on-site hardware designed to meet diverse operational and grid requirements.

For more information on Stem and the PowerTrack Suite, visit stem.com.

About Stem

Stem (NYSE: STEM) is a global leader reimagining technology to support the energy transition. We turn complexity into clarity and potential into performance.

Stem helps asset owners, operators, and energy stakeholders unlock the full value of their portfolios by enabling the intelligent development, deployment, and operation of clean energy assets. Stem’s integrated software suite, PowerTrackTM, is the industry-standard and best-in-class platform for asset monitoring and optimization and is backed by expert professional and managed services, all delivered under one roof. Designed to address complex energy challenges seamlessly, our technology transforms raw data into clear, actionable insights, providing the visibility and intelligence needed to drive performance. With projects across 55 countries, customers have trusted Stem for nearly 20 years to maximize the value of their clean energy investments.

Driven by human and artificial intelligence, Stem is unlocking energy intelligence. Learn more at stem.com.

About Voltares

Voltares is an independent renewable energy developer focused on bringing high-quality clean energy projects from concept to operation in emerging and fast-growing markets.

The company has a strong focus on long-term performance, local partnerships, and responsible project delivery. By combining development expertise with technical and commercial capabilities, Voltares works to turn renewable energy potential into reliable infrastructure that supports energy security, economic growth, and the transition to lower-carbon power systems.

Voltares has set a target to help avoid one million tons of CO₂ emissions by 2030 through the projects it develops and operates. Learn more at voltares.com.

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