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Solestial raises $17 million in Series A funding led by AE Ventures to expand production of its radiation-healing silicon solar modules for space applications. The company appoints Margo de Naray as CEO while founder Stanislau Herasimenka shifts to CTO to focus on technology development. Backed by new and returning investors, Solestial scales its Arizona facility to meet growing industry demand.
Space Energy Gets a Boost: Inside Solestial’s $17M Series A Round
Solestial announced the close of a $17 million Series A funding round led by AE Ventures. The round also included new investors such as Crosscut Ventures, Zeon Ventures, and Mitsubishi Electric Corporation’s ME Innovation Fund, managed by Global Brain Corporation. Existing backers like Airbus Ventures, General Purpose Venture Capital, Industrious Ventures, Stellar Ventures, and Techstars participated again.
This capital enables the company to scale its manufacturing capacity of silicon photovoltaics to 1 megawatt per year. That level of output is comparable to the estimated combined annual capacity of all U.S. and E.U. III-V space solar manufacturers. The funding supports production scaling and technology qualification for current and future space missions.
The investor interest reflects continued confidence in Solestial’s technology and commercial strategy. Returning investors and new stakeholders cited the accelerating market need and the firm’s ability to respond with cost-efficient, scalable solar solutions.
Leadership Shift at the Top: Why Solestial Brings In Margo de Naray
Solestial announced that Margo de Naray has joined the company as Chief Executive Officer. She was previously Senior Vice President and General Manager of Space Products and Services at Astra, bringing two decades of commercial and operations management experience in high-tech and growth-focused environments.
Stanislau Herasimenka, Solestial’s founding CEO, transitions to the role of Chief Technology Officer. This change is designed to focus his efforts on advancing the technical roadmap and scaling operations.
Herasimenka stated that de Naray’s appointment allows for a stronger focus on strategic leadership while maintaining technical development momentum. De Naray emphasized plans to expand the team, scale production, and continue qualifying their existing technology, which is already active on multiple space missions.
Building Solar for Orbit: What Makes Solestial’s Technology Stand Out
Solestial develops silicon solar cells tailored for use in space. The core feature of their product is the ability to self-cure radiation damage while exposed to sunlight, functioning at operational temperatures as low as 65°C.
These solar cells are integrated into ultrathin, lightweight, and flexible modules. Designed to last up to 10 years in space environments, the modules offer reduced mass and cost compared to traditional III-V multijunction technologies.
Key characteristics of Solestial’s solar modules include:
- Self-healing under sunlight
- Flexible design suitable for automated manufacturing
- Longevity of up to a decade in space applications
- Significant cost reductions in comparison to conventional products
The modules are already deployed in multiple active missions, providing validation for their performance and durability.
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Scaling Up in Arizona: How Solestial Meets Growing Demand
Since launching its facility in Tempe, Arizona in 2023, Solestial has steadily expanded its operational footprint. The company has added square footage annually and more than doubled its workforce.
With rising customer interest, the company’s focus has shifted toward increasing production throughput and meeting urgent market needs. Commercial product deliveries have already reached dozens of organizations.
Production is now scaling to a rate of 1 megawatt per year, aligning with demand from space-based programs and projects requiring efficient, lightweight solar power systems.
Global Backing and Strategic Confidence: Why Major Investors Are Betting on Solestial
Investors pointed to both product differentiation and operational momentum as reasons for their involvement. Beckett Jackson, Partner at AE Ventures, highlighted the company’s ability to offer lightweight, radiation-hardened solutions with faster delivery timelines and lower costs than current market standards.
Airbus Ventures Partner Mat Costes noted the importance of Herasimenka’s continued focus on technology and the value added by de Naray’s leadership. The return of seed investors further underscored sustained belief in the company’s approach and market relevance.
Komi Matsubara, Vice President of Business Innovation at Mitsubishi Electric Corporation, stated that the firm had been collaborating with Solestial for several years. He emphasized the growing confidence in the company’s technologies and expressed support for deeper engagement moving forward.
What This Means for the Future of Space Solar Manufacturing
Solestial’s recent funding and leadership changes position the company to expand its influence in the space energy sector. Its manufacturing approach enables rapid scale-up, while the product’s technical features allow it to serve a wide variety of orbital applications.
The combination of investor support, production scale, and technology performance creates a foundation for the next phase of growth. With demand continuing to increase and validation from multiple missions already in hand, Solestial’s roadmap is aligned with current market trajectories in space solar development.
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