Solestial
The Next Generation of Silicon Photovoltaics for Space Has Arrived.
Tempe, United States · Founded 2019 · $27.0M raised
- Headquarters
- Tempe, Arizona
- Founded
- 2019
- Website
- solestial.com
- Total Funding
- $27.0M
- Last Round
- $17.0M Series AMay 2025
- Rounds
- 2
About
Solestial develops next-generation silicon heterojunction solar cells and flexible solar power modules for small satellites and spacecraft. Its proprietary low-temperature annealing technology allows solar cells to self-heal radiation damage at operating temperatures, making them the only silicon solar products on the market with this capability. The company serves commercial and government customers including Boeing, NASA, and the Air Force Research Laboratory.
Summary
Solestial is a Clean Tech company based in Tempe, United States, founded in 2019. It has raised $27.0M in total across 2 rounds, most recently a $17.0M Series A round in May 2025. Investors include AE Ventures, Crosscut Ventures and Zeon Ventures.
Tech & App Stack
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Funding History
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May 2025
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Seed through Series A — per-round amounts, valuations, and who invested in each round.
Investors
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