Stellaris

About the offering

Stellaris Corporation, operating under the brand ClearPower Energy (clearpower.energy), is a Nashua, NH-based hardware and manufacturing company developing transparent solar windows for commercial buildings. The company's core product is a patent-protected insert — built into standard multi-pane insulated glass windows — that uses proven bifacial silicon solar cells to generate electricity without altering how windows are manufactured, installed, or used. This distinguishes it from competitors that either embed experimental materials into the glass itself or produce opaque solar windows with only 2–3% efficiency. Stellaris claims its approach achieves superior transparency and power generation simultaneously, using industry-standard components compatible with virtually any window manufacturer or size. The company holds 6 issued patents and has won Architectural Record's Product of the Year 2024. It has been selected by the USGBC-CA (U.S. Green Building Council, California) for its Net Zero Accelerator program and has received performance validation from the National Laboratory of the Rockies (formerly NREL). Early commercial traction includes a fabricator partnership with Diamond Windows & Doors. Stellarис has raised over $7M to date from venture capital investors including Convexa and iEnergies, as well as retail investors. The current Wefunder campaign had raised approximately $292,713 from 390 investors at the time of extraction, with a stated goal of $450,000 and a minimum investment of $100. Manufacturing machinery is described as built and ready as the company begins commercialization. The team includes Jim Paull (CEO/SPV Voting Proxy), Jack McCaffrey (Head of Manufacturing, previously at Evergreen Solar, Daystar Technologies, and BTU International), and Jen David (Director and Secretary, an environmental lawyer and VP at Sompo International). The team's collective background spans decades in the solar manufacturing industry. The target market is the global building-integrated photovoltaics (BIPV) sector, cited at $23.67B in 2023 and projected to grow at 21.2% annually to $89.8B by 2030, driven by mandatory building decarbonization regulations across the U.S. and globally. The company's go-to-market strategy centers on B2B partnerships with window fabricators, with planned next steps including commercial pilot deployments, certification pathway validation, manufacturing scale-up, and expanded fabricator partnerships over the next 12–18 months. The long-term business model and revenue structure (manufacturing vs. licensing) appear to still be evolving based on Q&A exchanges on the platform.

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