# Solestial, Inc.

> Solestial is a Tempe, Arizona space-solar company building ultrathin, radiation-hardened silicon photovoltaic modules for satellites and spacecraft. Spun out of Arizona State University research, the company makes flexible space-grade solar power modules that self-cure radiation damage at operating temperatures and targets the megawatt-class power demand of large satellite constellations and on-orbit infrastructure.

- **Founded:** 2013
- **Headquarters:** Tempe, Arizona, United States
- **Founders:** Stan Herasimenka (Co-Founder & CTO), Mikhail Reginevich (Co-Founder & Chief Engineer, Tooling and R&D)
- **Team size:** ~56 employees
- **Products:** Solar Cells, Flexible Solar Power Modules, Integrated Solar Power Modules, Solar Arrays
- **Notable:** Opened a 30,000 sq ft solar cell and module manufacturing facility in Tempe, AZ in 2023., Closed $17M Series A in May 2025 to scale space-solar manufacturing., 11+ years cumulative flight heritage across active spacecraft.

## Products & services

- **Solar Cells** — Ultrathin (~30 micron) flexible silicon heterojunction cells, radiation-hardened with a self-curing mechanism at operating temperatures.
- **Flexible Solar Power Modules** — Low-mass, flexible space-grade solar power modules for stowed deployment and unconventional spacecraft surfaces.
- **Integrated Solar Power Modules** — Solestial cells/modules integrated with rigid or flexible substrate panels for traditional bus integration.
- **Solar Arrays** — Complete array systems delivered through partnerships with deployment-mechanism suppliers.

## Achievements

- Opened a 30,000 sq ft solar cell and module manufacturing facility in Tempe, AZ in 2023.
- Closed $17M Series A in May 2025 to scale space-solar manufacturing.
- 11+ years cumulative flight heritage across active spacecraft.
- Products operating on seven spacecraft to date.
- Rebranded from Regher Solar to Solestial in 2022 with exclusive space focus.
- Hosted Congressman Greg Stanton on a site visit highlighting Arizona space manufacturing.

## Latest updates

- **2025-05** — Announced $17M Series A funding round to scale space solar manufacturing.
- **2024-11** — Congressman Greg Stanton visited the Tempe factory.
- **2023** — Opened the 30,000 sq ft Tempe manufacturing facility.
- **2022** — Rebranded from Regher Solar to Solestial, focused exclusively on space.

## Links

- Website: https://solestial.com
- LinkedIn: https://www.linkedin.com/company/solestial/
- Twitter/X: https://twitter.com/SolestialSpace
- YouTube: https://www.youtube.com/@solestialspace
- Bluesky: https://bsky.app/profile/solestialspace.bsky.social
- Instagram: https://www.instagram.com/solestialspace/
- Facebook: https://www.facebook.com/SolestialSpace/
- TikTok: https://www.tiktok.com/@solestialspace

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Profile page: https://yespress.io/solestial-inc
Published by YesPress — https://yespress.io
Last updated: 2026-05-18