Company

Solestial Employees working in the solar clean lab.

Leadership Team

Solestial Employees, March 2025

To date, Solestial has raised more than $29M+ from leading aerospace and technology investors.

Our Investors

Scaling Manufacturing in 2025 and Beyond

As we continue to scale our operations and leverage the manufacturing techniques of terrestrial silicon, we are working towards a goal of producing tens, hundreds, and someday thousands, of megawatts of space photovoltaics per year. Every day we work to create a future where development in space is not hindered by accessible energy.

Solestial Warner

Opened in 2023, Solestial’s 30,000 sq ft dedicated solar cell and module manufacturing facility in Tempe, Arizona, USA.

solestial warner exterior
solestial warner glass door entrance
fiberglass production industry equipment at manufa
person in lab coat standing in front of a machine
person in lab coat examining machine

Solestial Co-Founders Stan Herasimenka and Mikhail Reginevich Started Working Together in 2010.

Solestial’s origins date to 2010, when co-founders Stan Herasimenka and Mikhail Reginevich met and bonded over a shared passion for solar technology. A year later, they began collaborating at Arizona State University on novel metallization for silicon heterojunction solar cells, leading to the founding of Regher Solar in 2013.

The company’s early goal was to develop new manufacturing technologies for terrestrial silicon solar cells. In 2015, Stan and Mikhail collaborated on a NASA project testing the radiation hardness of ultrathin silicon solar cells. Through that work, they recognized the enormous potential of ultrathin silicon for space applications. By 2018, as plans for large satellite constellations requiring tens of megawatts of solar power emerged, the team identified a widening gap between demand for space-grade solar power modules and available capacity. They decided to focus exclusively on advancing solar technology for space.

In 2022, Regher Solar rebranded as Solestial to reflect its dedicated focus on space. Today, Solestial is a fast-growing company developing, manufacturing, and supplying radiation-hardened silicon solar power modules to a wide range of commercial and government customers.