Solestial, Inc.
@solestialspace.bsky.social
We exist to deliver abundant ☀️ energy in space.
Linktr.ee/SolestialSpace
Linktr.ee/SolestialSpace
A new paper in Joule highlights how Solestial’s self-healing silicon solar technology enables scalable, resilient power generation in space. Featuring research by Mario A. Mejía Escobar and Carlos Algora of @upm.es. Read more: bit.ly/4pdJFqS
December 9, 2025 at 4:10 PM
A new paper in Joule highlights how Solestial’s self-healing silicon solar technology enables scalable, resilient power generation in space. Featuring research by Mario A. Mejía Escobar and Carlos Algora of @upm.es. Read more: bit.ly/4pdJFqS
We are excited to announce a new Space Act Agreement with NASA’s Glenn Research Center to advance the resilience of ultrathin silicon solar arrays in lunar and orbital environments. Learn more in our press release: bit.ly/4iC4w4L
December 3, 2025 at 4:00 PM
We are excited to announce a new Space Act Agreement with NASA’s Glenn Research Center to advance the resilience of ultrathin silicon solar arrays in lunar and orbital environments. Learn more in our press release: bit.ly/4iC4w4L
Solestial solar power modules are engineered for space with an ultrathin design and very low mass. At only 272 microns and 340 - 400 g/m2 depending on mission specifics, the result is more power, lighter launches, and greater design flexibility for next generation spacecraft.
November 25, 2025 at 4:16 PM
Solestial solar power modules are engineered for space with an ultrathin design and very low mass. At only 272 microns and 340 - 400 g/m2 depending on mission specifics, the result is more power, lighter launches, and greater design flexibility for next generation spacecraft.
Our 1-meter-wide flexible solar modules can be paired with various substrates to form lightweight blankets, rigid panels, or picture-frame integrations.
This flight model weighs just 600 g/m², rolls around 10 cm mandrels, and is built for compact launch and efficient deployment.
This flight model weighs just 600 g/m², rolls around 10 cm mandrels, and is built for compact launch and efficient deployment.
November 19, 2025 at 4:20 PM
Our 1-meter-wide flexible solar modules can be paired with various substrates to form lightweight blankets, rigid panels, or picture-frame integrations.
This flight model weighs just 600 g/m², rolls around 10 cm mandrels, and is built for compact launch and efficient deployment.
This flight model weighs just 600 g/m², rolls around 10 cm mandrels, and is built for compact launch and efficient deployment.
Our vision for rad-hard, lightweight Si PV for space is taking shape!
Solestial now produces 1-meter-wide flexible solar power modules. The next generation of our flight-proven design will fly in early 2026 and advances scalable power for the next generation of spacecraft.
Solestial now produces 1-meter-wide flexible solar power modules. The next generation of our flight-proven design will fly in early 2026 and advances scalable power for the next generation of spacecraft.
November 5, 2025 at 4:17 PM
Our vision for rad-hard, lightweight Si PV for space is taking shape!
Solestial now produces 1-meter-wide flexible solar power modules. The next generation of our flight-proven design will fly in early 2026 and advances scalable power for the next generation of spacecraft.
Solestial now produces 1-meter-wide flexible solar power modules. The next generation of our flight-proven design will fly in early 2026 and advances scalable power for the next generation of spacecraft.
We’re proud to be featured in Vention’s Demo Day, showcasing innovators transforming manufacturing with automation.
At Solestial, we’re scaling production of our radiation-hardened silicon solar technology for space: smarter, faster, and more sustainably.
Watch the full event: bit.ly/47ty8MD
At Solestial, we’re scaling production of our radiation-hardened silicon solar technology for space: smarter, faster, and more sustainably.
Watch the full event: bit.ly/47ty8MD
October 29, 2025 at 4:37 PM
We’re proud to be featured in Vention’s Demo Day, showcasing innovators transforming manufacturing with automation.
At Solestial, we’re scaling production of our radiation-hardened silicon solar technology for space: smarter, faster, and more sustainably.
Watch the full event: bit.ly/47ty8MD
At Solestial, we’re scaling production of our radiation-hardened silicon solar technology for space: smarter, faster, and more sustainably.
Watch the full event: bit.ly/47ty8MD
We’re growing! 🚀
Please join us in welcoming our newest Solestians who joined the team in Q3.
Each of them brings unique talents to our mission of delivering affordable and scalable solar power for space. Together, we’re pushing the boundaries of what’s possible for space solar tech.
Please join us in welcoming our newest Solestians who joined the team in Q3.
Each of them brings unique talents to our mission of delivering affordable and scalable solar power for space. Together, we’re pushing the boundaries of what’s possible for space solar tech.
October 22, 2025 at 3:59 PM
We’re growing! 🚀
Please join us in welcoming our newest Solestians who joined the team in Q3.
Each of them brings unique talents to our mission of delivering affordable and scalable solar power for space. Together, we’re pushing the boundaries of what’s possible for space solar tech.
Please join us in welcoming our newest Solestians who joined the team in Q3.
Each of them brings unique talents to our mission of delivering affordable and scalable solar power for space. Together, we’re pushing the boundaries of what’s possible for space solar tech.
Process Engineer Jeff prepares silicon wafers for Solestial’s sputtering tool.
With customer demand for our solar cells and modules surging, our dedicated team continues to increase throughput to deliver the next generation of solar technology for space.
With customer demand for our solar cells and modules surging, our dedicated team continues to increase throughput to deliver the next generation of solar technology for space.
October 15, 2025 at 4:20 PM
Process Engineer Jeff prepares silicon wafers for Solestial’s sputtering tool.
With customer demand for our solar cells and modules surging, our dedicated team continues to increase throughput to deliver the next generation of solar technology for space.
With customer demand for our solar cells and modules surging, our dedicated team continues to increase throughput to deliver the next generation of solar technology for space.
Solestial is partnering with EnduroSat to power its next-generation ESPA-class satellite, FRAME, launching in 2026. Our radiation-hardened silicon solar modules will provide reliable, high-performance power in orbit. Read the complete announcement: bit.ly/3KFmXbM
October 8, 2025 at 4:20 PM
Solestial is partnering with EnduroSat to power its next-generation ESPA-class satellite, FRAME, launching in 2026. Our radiation-hardened silicon solar modules will provide reliable, high-performance power in orbit. Read the complete announcement: bit.ly/3KFmXbM
Principal Engineer Sergey Nastachkin works on Solestial’s custom plating tank.
Copper plating isn’t new, but we’ve built a unique system for our silicon wafers, from process control to waste management.
Innovation is in both our solar cells and the tools we use to make them.
Copper plating isn’t new, but we’ve built a unique system for our silicon wafers, from process control to waste management.
Innovation is in both our solar cells and the tools we use to make them.
October 2, 2025 at 4:11 PM
Principal Engineer Sergey Nastachkin works on Solestial’s custom plating tank.
Copper plating isn’t new, but we’ve built a unique system for our silicon wafers, from process control to waste management.
Innovation is in both our solar cells and the tools we use to make them.
Copper plating isn’t new, but we’ve built a unique system for our silicon wafers, from process control to waste management.
Innovation is in both our solar cells and the tools we use to make them.
Solestial is hiring in Tempe, AZ:
🚀 Environmental Health & Safety Coordinator: bit.ly/4nf0GQr
🚀 Quality Manager: bit.ly/46hKpEq
Be part of the team building the next generation of affordable, durable, and scalable solar solutions for space.
🚀 Environmental Health & Safety Coordinator: bit.ly/4nf0GQr
🚀 Quality Manager: bit.ly/46hKpEq
Be part of the team building the next generation of affordable, durable, and scalable solar solutions for space.
September 24, 2025 at 5:31 PM
Solestial is hiring in Tempe, AZ:
🚀 Environmental Health & Safety Coordinator: bit.ly/4nf0GQr
🚀 Quality Manager: bit.ly/46hKpEq
Be part of the team building the next generation of affordable, durable, and scalable solar solutions for space.
🚀 Environmental Health & Safety Coordinator: bit.ly/4nf0GQr
🚀 Quality Manager: bit.ly/46hKpEq
Be part of the team building the next generation of affordable, durable, and scalable solar solutions for space.
One advantage of Solestial’s Si heterojunction tech (HJT) is its lower temp coefficient.
Compared to p-type diffused junction cells (PERC), Solestial degrades just -0.24% per °C, compared to -0.34%. At 80°C, our 20% cells deliver +1% absolute / +6% relative efficiency.
Compared to p-type diffused junction cells (PERC), Solestial degrades just -0.24% per °C, compared to -0.34%. At 80°C, our 20% cells deliver +1% absolute / +6% relative efficiency.
September 17, 2025 at 6:31 PM
One advantage of Solestial’s Si heterojunction tech (HJT) is its lower temp coefficient.
Compared to p-type diffused junction cells (PERC), Solestial degrades just -0.24% per °C, compared to -0.34%. At 80°C, our 20% cells deliver +1% absolute / +6% relative efficiency.
Compared to p-type diffused junction cells (PERC), Solestial degrades just -0.24% per °C, compared to -0.34%. At 80°C, our 20% cells deliver +1% absolute / +6% relative efficiency.
Solestial’s rad-hard silicon solar cells show no additional degradation compared to adjacent III-V cells after a year of continuous operation in LEO. Data from AVS shows that our modules are a cost-effective alternative to traditional II-V solar cells for space.
September 10, 2025 at 6:58 PM
Solestial’s rad-hard silicon solar cells show no additional degradation compared to adjacent III-V cells after a year of continuous operation in LEO. Data from AVS shows that our modules are a cost-effective alternative to traditional II-V solar cells for space.
Exciting news: Solestial is the cover story in the September issue of Tech Briefs!
Read how our ultrathin, flexible silicon solar products are redefining affordable, durable, high-performance space power. 🚀 Read more: bit.ly/4mbuP1U
Read how our ultrathin, flexible silicon solar products are redefining affordable, durable, high-performance space power. 🚀 Read more: bit.ly/4mbuP1U
September 9, 2025 at 4:49 PM
Exciting news: Solestial is the cover story in the September issue of Tech Briefs!
Read how our ultrathin, flexible silicon solar products are redefining affordable, durable, high-performance space power. 🚀 Read more: bit.ly/4mbuP1U
Read how our ultrathin, flexible silicon solar products are redefining affordable, durable, high-performance space power. 🚀 Read more: bit.ly/4mbuP1U
🚀 Excited to welcome Danny Field as Solestial’s new Vice President, Product and Programs! With 14+ years aerospace experience (D-Orbit USA, Astra, OneWeb), he’ll lead our customer programs and the roadmap for our next-generation space solar technology. Welcome, Danny!
September 3, 2025 at 4:49 PM
🚀 Excited to welcome Danny Field as Solestial’s new Vice President, Product and Programs! With 14+ years aerospace experience (D-Orbit USA, Astra, OneWeb), he’ll lead our customer programs and the roadmap for our next-generation space solar technology. Welcome, Danny!
From this POV, you can see how our fully automated wet etch processing hood will reduce solar wafer processing time by more than 50%. Once operational, this tool will enable Solestial to deliver more space-grade silicon solar cells, faster, to meet rising demand.
August 28, 2025 at 8:05 PM
From this POV, you can see how our fully automated wet etch processing hood will reduce solar wafer processing time by more than 50%. Once operational, this tool will enable Solestial to deliver more space-grade silicon solar cells, faster, to meet rising demand.
Check out one of our latest investments in scaling production: our fully automated wet etch processing hood! Once operational, this advanced system will cut solar wafer processing time by more than 50%, enabling us to deliver more high-quality solar cells faster than ever before.
August 20, 2025 at 6:27 PM
Check out one of our latest investments in scaling production: our fully automated wet etch processing hood! Once operational, this advanced system will cut solar wafer processing time by more than 50%, enabling us to deliver more high-quality solar cells faster than ever before.
Great to see our solar power modules at SmallSat integrated into MMA Space’s FlexArray! We partner with aerospace innovators to develop next-gen solar arrays — pairing our low-mass, high W/kg Si modules with our partners’ hardware to deliver power solutions for space missions.
August 14, 2025 at 5:27 PM
Great to see our solar power modules at SmallSat integrated into MMA Space’s FlexArray! We partner with aerospace innovators to develop next-gen solar arrays — pairing our low-mass, high W/kg Si modules with our partners’ hardware to deliver power solutions for space missions.
We’re looking forward to Small Satellite Conference! Will you be in Salt Lake City from August 11-13? Schedule a meeting with Solestial CEO, Margo de Naray, and Luke Gordon, VP, Sales, to learn more about our rad-hard silicon solar technology for space applications: bit.ly/4lMJbXb
August 6, 2025 at 6:54 PM
We’re looking forward to Small Satellite Conference! Will you be in Salt Lake City from August 11-13? Schedule a meeting with Solestial CEO, Margo de Naray, and Luke Gordon, VP, Sales, to learn more about our rad-hard silicon solar technology for space applications: bit.ly/4lMJbXb
At Solestial, we believe in cultivating the next generation of talent. We're excited to announce that Ryan Gavette has joined us full-time as a Process Engineer! Ryan began his journey as an intern and recently graduated from @asuengineering.bsky.social. Congrats to the Class of 2025!
July 30, 2025 at 4:24 PM
At Solestial, we believe in cultivating the next generation of talent. We're excited to announce that Ryan Gavette has joined us full-time as a Process Engineer! Ryan began his journey as an intern and recently graduated from @asuengineering.bsky.social. Congrats to the Class of 2025!
We are encouraged by the House Armed Services Committee's recognition of the critical national security imperative for domestic space solar production in the #NDAA. We look forward to collaborating with @DeptofDefense. Read more: bit.ly/4f2QmrD
July 23, 2025 at 4:44 PM
We are encouraged by the House Armed Services Committee's recognition of the critical national security imperative for domestic space solar production in the #NDAA. We look forward to collaborating with @DeptofDefense. Read more: bit.ly/4f2QmrD
This 5.5 meter long, rollable integration was made using new manufacturing processes to produce larger, 1-meter-wide solar power modules. Our flexible solar cell technology improves total mass density and stowed volume while maximizing deployed array power density.
July 9, 2025 at 4:21 PM
This 5.5 meter long, rollable integration was made using new manufacturing processes to produce larger, 1-meter-wide solar power modules. Our flexible solar cell technology improves total mass density and stowed volume while maximizing deployed array power density.
Last week, we opened our doors for a special Friends & Family Open House. It was a wonderful afternoon filled with tours of our manufacturing space, presentations, food and drink, and plenty of fun as Solestians shared their work with the people who support them every day.
June 25, 2025 at 4:03 PM
Last week, we opened our doors for a special Friends & Family Open House. It was a wonderful afternoon filled with tours of our manufacturing space, presentations, food and drink, and plenty of fun as Solestians shared their work with the people who support them every day.
Our sputtering tool is a specialized in-line coater used to deposit thin films onto our solar cells. This behemoth is roughly 50x larger than the tool we used in our pilot production line!
📸: Pictured; Principal Engineer, Sergey
📸: Pictured; Principal Engineer, Sergey
June 19, 2025 at 4:56 PM
Our sputtering tool is a specialized in-line coater used to deposit thin films onto our solar cells. This behemoth is roughly 50x larger than the tool we used in our pilot production line!
📸: Pictured; Principal Engineer, Sergey
📸: Pictured; Principal Engineer, Sergey
Luis and Sam, members of Solestial’s Module team, pose alongside our largest, most powerful delivery to date. This impressive assembly of solar blankets has been sent to our aerospace partner for rigorous third-party stress testing.
June 10, 2025 at 4:23 PM
Luis and Sam, members of Solestial’s Module team, pose alongside our largest, most powerful delivery to date. This impressive assembly of solar blankets has been sent to our aerospace partner for rigorous third-party stress testing.