Solar Energy for Space
The Next Generation of Silicon Photovoltaics for Space Has Arrived.
We are delivering the next generation of space-stable silicon photovoltaics. Our efficient, reliable, radiation-hardened solutions feature competitive performance and 90% lower cost than III-V multijunction solar products.
By the Numbers
We’re growing rapidly and scaling our manufacturing efforts to support the future of solar energy in space.
$12M+
Raised from leading investors
1 MW
Manufacturing capacity in 2025
1/10
1/10 The cost of III-V multijunction solar
Breakthrough Technology
The only solar products on the market that self-cure radiation damage at operating temperatures.
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Solar Cell
Our ultrathin, flexible, silicon heterojunction solar cells offer 20%* efficiency and are the only silicon solar cells on the market capable of low-temperature annealing of radiation damage.
We engineer our solar cells in-house for optimal performance in space, leveraging commercially available silicon wafers.
* Solar cell statistics reflect Generation 2 product available in 2025.
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Flexible Solar Power Modules
Our flexible, low mass, and radiation-hardened solar cell allows us to reimagine packaging. We replace cover glass and composite substrate with polymer layers, resulting in a thin solar power module that can withstand up to 10 years in a variety of destinations in space.
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Integrated Solar Power Modules
Our flexible solar power modules can be paired with rigid or flexible substrates. Solestial offers module-to-substrate integrations to deliver integrated solar power modules that are ready to install on your spacecraft.
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Solar Array
We are partnering with a variety of firms to offer complete solar array capabilities. Our flexible solar power modules can be integrated with a wide range of solar array deployment systems.
We work closely with our commercial and government customers and partners to test and deliver quality products.
Some of our Customers
A Community of Innovators
Our dynamic growth is a testament to our team’s relentless pursuit of innovation. If you share our passion for pushing the boundaries of what’s possible, look no further for a rewarding career.
