Solestial to power next-generation EnduroSat satellite
TEMPE, Ariz. and SOFIA, Bulgaria, October 8, 2025 — Solestial, Inc. (“Solestial”), the solar energy company for space, and Bulgarian satellite manufacturer EnduroSat AD (“EnduroSat”), today announced a new sales agreement for Solestial’s radiation-hardened silicon solar power modules for delivery in 2025. The agreement includes an additional option of 7 kW for future power needs. The supply agreement supports EnduroSat’s next-generation small satellite (“SmallSat”), FRAME. Solestial will provide primary power for FRAME, EnduroSat’s most advanced ESPA-class satellite, which is scheduled to fly in the first half of 2026.
“We are very pleased to partner with Solestial,” said Dr. Victor Danchev, CTO of EnduroSat. “Solestial is a strategic partner whose capabilities align perfectly with our mission to make space universally accessible through streamlined data services. FRAME is our most capable satellite to date, designed for rapid manufacturing in mind in addition to performance. We are scaling our new facility to produce up to 60 per month starting Q2 2026 and we sought a supplier who could help us deliver on the value proposition and quantities required by our customers.”
“We’re honored to be selected by EnduroSat to power these critical missions with our state-of-the-art solar technology,” said Margo de Naray, CEO of Solestial. “It’s been a positive collaboration, and we look forward to continuing to build on this partnership going forward.”
About Solestial
Solestial exists to deliver abundant energy in space. The company’s breakthrough technology is a silicon solar cell engineered for space to self-cure radiation damage under sunlight at operating temperatures as low as 65°C. Solestial solar cells are packaged in an ultrathin, low-mass, flexible solar power module designed to withstand up to 10 years in a variety of destinations in space. The flexible solar power modules can be produced on automated machines resulting in costs lower than traditional III-V multijunction solar products.
From today’s satellite constellations and research projects to tomorrow’s lunar settlements and services in space, Solestial’s innovative technology represents a paradigm shift for space solar; an affordable, scalable solution to power sustained development. Solestial is a US company manufacturing solar cells and flexible solar power modules in Tempe, Arizona. To learn more, visit the Solestial website and follow Solestial on social media.
About EnduroSat
EnduroSat is a space infrastructure builder that engineers, builds, and operates exceptional satellites. The company streamlines space missions in LEO and beyond, handling every step from mission design to launch and operations. EnduroSat serves more than 360 customers globally and employs more than 230 space professionals across 6 locations worldwide. For more information, visit https://www.endurosat.com.