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Nashua, NH

Scaling the production and market adoption of transparent electricity-generating window technology.

• Proven performance: ClearPower matches the electricity generation of traditional solar panels, confirmed by NREL.
• Patented technology: Stellaris holds proprietary patents that enable transparent, energy-producing windows.
• Strong market potential: Targeting the $13 billion BIPV window market projected by 2028.
• Automated manufacturing: Stellaris has begun automated production and is actively selling units.
• Tax incentives available: ClearPower products qualify for federal tax credits, reducing installation costs.
• Experienced team: Leadership includes veterans from Evergreen Solar, Daystar Technologies, and BTU International.

Stellaris is introducing ClearPower, a proprietary electricity-generating window insert designed to meet the urgent need for renewable energy in buildings. As cities adopt stricter building codes targeting reduced fossil fuel consumption, ClearPower offers a viable solution by embedding transparent photovoltaic technology into building windows. This technology enables structures to self-generate clean electricity without compromising aesthetics or functionality. Stellaris’s patented approach allows windows to maintain full transparency while generating power levels comparable to conventional solar panels, making them suitable for both new construction and retrofits. ClearPower not only helps reduce reliance on grid electricity but also unlocks access to significant tax incentives and cost savings.

Stellaris has made strong initial progress by automating manufacturing and initiating sales. The technology has been verified by the National Renewable Energy Laboratory to match the output of conventional panels, further validating its commercial potential. With a market for building-integrated photovoltaic windows projected to reach $13 billion by 2028, Stellaris is positioning ClearPower to lead this emerging space. Backed by a team with decades of solar and manufacturing expertise, Stellaris is aiming to scale production, expand its reach, and further establish ClearPower as a cornerstone in energy-efficient building design. The company is seeking investment to accelerate market adoption, expand capacity, and grow its sales and distribution infrastructure, ultimately transforming how commercial buildings generate and consume electricity.

Company Info

Stellaris Corporation produces transparent photovoltaic window inserts that generate clean energy for buildings.

Stellaris Corporation is the developer of ClearPower, a patented photovoltaic window technology that generates electricity while maintaining full transparency. Unlike traditional solar window solutions that compromise between visibility and performance, ClearPower enables buildings to retain natural light without sacrificing energy output. These window inserts integrate seamlessly into new or existing structures and can generate annual power output comparable to conventional, non-transparent solar panels, depending on building orientation and geography.

The technology offers multiple financial and environmental benefits for building owners and developers, including increased operating cash flow, higher property value, and eligibility for a 30% federal investment tax credit. With a seasoned team from companies like Evergreen Solar and Daystar Technologies, Stellaris is targeting the building-integrated photovoltaics (BIPV) market, projected to reach $13 billion by 2028. The company has received industry recognition, including Architectural Record’s Product of the Year Editors’ Pick in 2024, and validation from the National Renewable Energy Laboratory for its performance capabilities. ClearPower is positioned to meet rising demand driven by stricter building energy codes and sustainability goals across U.S. cities.