Smart Photovoltaic Windows


Stellaris is developing ClearPower™, a fully-transparent, electricity-generating window. With its high power-density and transparency, ClearPower™ is uniquely designed to meet the urgent need for buildings to generate their own green electricity and stop using fossil fuels for heating. Our goal is to enable every window to be a power plant. Stellaris is currently pre-revenue and its technology is patent-pending and not yet available for commercial use.
... Show more
This Reg CF offering is made available through StartEngine Capital, LLC. This investment is speculative, illiquid, and involves a high degree of risk, including the possible loss of your entire investment.


Reasons Icon

The high transparency and power output per unit area of ClearPower™ has garnered enthusiastic letters of support from major glass manufacturers for its promising technology within the photovoltaic industry.

Reasons Icon

The global market for Building-Integrated Photovoltaic (BIPV) windows is expected to grow significantly (16.0% CAGR) and is projected to reach $13B by 2028.*

Reasons Icon

Stellaris currently holds three patents for photovoltaic device technology and has accrued more than fifteen years of experience developing solar photovoltaic (PV) equipment, during which we became a national first prize winner of the Cleantech Open, the world’s largest clean technology accelerator program.

*Market statistics provided by GlobeNewswire (source)

The Future is Clear™ with ClearPower™

Stellaris Corporation is developing ClearPower™, a transparent, solar electricity-generating window technology designed to decrease or eliminate building emissions of greenhouse gasses from the use of fossil fuels for space heating. 

As one of the first Building Integrated Photovoltaic Windows (BIPV) capable of providing both substantial power output as well as high transparency, ClearPower™ is positioned to be a powerful tool for electrifying buildings and reducing their dependence on fossil fuels. It is especially well suited for buildings in dense urban areas without sufficient space for solar or wind energy installations.

*The above clip features a ClearPower™ prototype. Product is not currently available for commercial use.

ClearPower™ is the culmination of more than fifteen years of work by Stellaris Corporation to address the urgent need for a way for buildings to generate their own clean electricity. Now, with testing from the National Renewable Energy Laboratory (NREL) corroborating our technology's performance and support for ClearPower's promising developments from international glass manufacturers, Stellaris is working towards an official commercial launch. 

The Problem

Buildings Are Among the Largest Emitters of Greenhouse Gasses

In 2020, the United States Environmental Protection Agency reported that buildings emit more greenhouse gasses than the transportation or power generation sectors. Buildings still rely heavily on fossil fuels for heating, yet as pressure mounts to reduce greenhouse gas emissions, many buildings, especially high-rise buildings, are left with limited options for obtaining green electricity to replace fossil fuels for heating. The need for so many buildings to have a source of clean electricity has created an urgent need for new clean electricity technology to enable buildings to self generate green electricity.

Existing photovoltaic windows have gained little traction due to their high cost, low power, and/or their lack of transparency. ClearPower™ addresses all of these issues with a power output approaching that of traditional high-efficiency, opaque photovoltaic (PV) modules, all while maintaining high transparency.

The Solution

ClearPower™ Will Be Able to Power Buildings’ All-electric Heating and Air Conditioning

ClearPower™ solar photovoltaic windows use narrow photovoltaic cells embedded in a window glazing. Due to the small size and orientation of the cells, ClearPower™ maintains high transparency while its unique design enables the production of up to 5 times more power than other "clear" BIPV windows. Its electrical output approaches that of a conventional high-efficiency, opaque PV module. ClearPower™ can be used as building windows while generating greenhouse gas-free electricity to power the building’s heating and cooling needs.

*The above image features a ClearPower™ prototype. Product is not currently available for commercial use.

The integrated high-efficiency solar cells act as louvers, blocking high-angle sunlight which reduces air conditioning loads. This is a significant additional energy-saving benefit.

Stellaris plans to develop high-speed, automated manufacturing for the ClearPower™ PV panels, which we will then outsource to contract manufacturers. This scalable, low capital approach will allow us to avoid the expense of building our own facilities while retaining the ownership of the high value technology assets by patent and trade secret protection.

The Market

Rapid Market Growth Expected as Pressure to Eliminate Emissions Increases

Around the country, laws are being passed by cities and states requiring both existing and new buildings to drastically reduce their greenhouse gas emissions by eliminating the use of fossil fuels for space heating, while building codes are prohibiting new natural gas hook-ups and requiring the inclusion of renewables for new buildings. With target dates for these ambitious goals only a few years away, many building owners and managers are feeling the pressure to find a solution.


Spurred by these regulations, the global market for Building-Integrated Photovoltaic (BIPV) windows is expected to grow substantially (16.0% CAGR) and is projected to reach $13B by 2028. Sized at $4.6B in 2021, Stellaris sees the nearly 3x market growth projection as validation of our technology's role within this renewable energy push.

Stellaris is targeting new construction and replacement markets both domestically and internationally for large-insulated glass windows, especially high-rise buildings with curtain-wall construction. We also see an immediate benefit for related applications such as clear railings and clear barriers. 

Our Traction

Stellaris is Garnering Industry Support for Our Promising Technology

We are truly excited about the latest iteration of our ClearPower™ design, as it’s already beyond what we hoped for when it comes to transparency, appearance, and performance - and other industry organizations share this sentiment.  

*The above image features a ClearPower™ prototype. Product is not currently available for commercial use.

Major glass manufacturers have shared their support for the ClearPower™ product due to its high transparency and power output per unit area, one citing it as a "promising technology" for the BIPV industry. Additionally, the National Renewable Energy Laboratory (NREL) has conducted independent tests of the ClearPower™ product that have corroborated Stellaris’s own performance testing. 

Stellaris currently holds three patents for photovoltaic device technology with additional patents pending, in addition to the extensive know-how and trade secrets we have learned over 15 years of developing solar equipment. During this time, Stellaris also became a national first prize winner of the Cleantech Open, the world’s largest clean technology accelerator program. 

Why Invest

An Exciting, New Technology Made to Address Climate Change

Stellaris believes ClearPower™ can play a critical role in the fight against climate change by reducing greenhouse gas emissions. As many building owners are facing legally mandated deadlines to decarbonize their buildings and regulations that require termination of the use of oil and gas for building space heating, we feel the timing is perfect for the introduction of our ClearPower™ solar photovoltaic window into the market. 

Funds raised from this campaign will be used to continue refining our product for commercial production, develop automated assembly procedures, manufacture and install ClearPower™ at test and beta sites, and continue to test the performance and durability of the product and to make continuous improvements in the product’s design and efficiency.

With help from the StartEngine community, we are determined to make Stellaris Corporation a go-to provider of clear, electricity-generating window components. Invest today in a scalable, cost-effective technology and join us as we seek to make a worldwide impact.

*The above windows shown are not BIPV windows and were not developed by Stellaris Corporation.


NASHUA, NH 03062-2809

Stellaris is developing ClearPower™, a fully-transparent, electricity-generating window. With its high power-density and transparency, ClearPower™ is uniquely designed to meet the urgent need for buildings to generate their own green electricity and stop using fossil fuels for heating. Our goal is to enable every window to be a power plant. Stellaris is currently pre-revenue and its technology is patent-pending and not yet available for commercial use.


James B. Paull
James B. Paull
CEO, President, and Director

Jim is the founder of Stellaris and its CEO. Most recently, has been Senior Advisor for Distributed Resources at DNV, a global consulting firm dedicated to safeguarding life, property, and the environment. 

He holds AB and BE degrees in engineering from Dartmouth, a MS in engineering from Tufts, and a MS in management from UMass Lowell.

James W. Paull

James W. Paull

Director and Treasurer

James is currently Senior Business Development Manager for Good Harbor Group. Previously, he was Senior Vice President at GQR Global Markets and Business Development Executive at Medicus Healthcare Solutions. He has also been Operations Manager for Stellaris. James holds a BA from UMass Lowell.

Jeannette P. David

Jeannette P. David

Director and Secretary

Jen is Assistant Vice President and Claims Counsel for Sompo International. She was formerly Senior Claims Specialist at Liberty International Underwriters and a Senior Analyst at AIG. She holds a JD and a Masters degree in energy, environment, and natural resources from Vermont Law School and has a BA in environmental studies from Union.

Peter Morse

Peter Morse

Senior Design Engineer

Peter is a Senior Engineer sopecializing in in designing machines for automated production. machines. He is Principal Engineer at food processing machinery manufaturer Pearce Processing and was formerly Principal Module Area Engineer for Evergreen Solar. He has a BS in mechanical engineering from Tufts. 

Marco Endara

Marco Endara

Senior Production Engineer

Marco is in charge of solar cell and window component machinery operation, analysis and design. Prior to Stellaris, he was the Operations and Technical Manager for module assembly at Evergreen Solar. Marco has extensive experience in manufacturing operations, engineering and equipment controls design. He has a BS in electrical engineering from the City College of New York and an MBA from Worcester Polytechnic Institute.

Rob Janoch

Rob Janoch

Senior Manufacturing Engineer

Rob is a principal at Janoch Engineering. Recently, he was President of the solar testing equipment manufacture BrightSpot Automation, and fromerly was Senior Engineer at Evergreen Solar where he specialized in laser processing of solar cells. He has a BS in engineering and applied science from Yale and an MS in mechanical engineering from MIT.

Arnold Wallenstein

Arnold Wallenstein

Legal and administrative; Member Board of Advisors

Arnie is currently the Principal Member of the Enegry Law Group in Boston, MA. He was Senior VP and General Counsel for Advanced Power Services (NA) Inc. and was formerly Assistant General Counsel for Thermo Electron Corporation (now Thermo Fisher Scientific). He was a co-founder of Industrial Energy Corporation and was a member of energy law firms. He has over 40 years as a lawyer and legal executive for companies in the energy business. He holds a BA from University of Massachusetts, Amherst, an MS from the Harvard School of Public Health in Environmental Health Sciences, and a JD from Harvard Law School.

Craig Fifield

Craig Fifield

Senior Prototype Technician

Craig handles prototype design, construction and testing. Prior to joining Stellaris Craig worked as the Prototype Specialist for Robert Bosch LLC where he created working prototypes used in research and development of various automotive systems, with over 25 years of diversified design and fabrication experience. He has a BA degree from the University of New Hampshire and an AS degree in Furniture Design and Fabrication from the Wendell Castle School. 


Dec 23, 2022
Non-Voting Common Stock

Maximum Number of Shares Offered subject to adjustment for bonus shares



Stellaris Corporation

Corporate Address


1 TARA BLVD, STE 200, NASHUA, NH 03062-2809

Offering Minimum



Offering Maximum



Minimum Investment Amount

(per investor)




Offering Type



Security Name


Non-Voting Common Stock

Minimum Number of Shares Offered



Maximum Number of Shares Offered



Price per Share



Pre-Money Valuation



*Maximum Number of Shares Offered subject to adjustment for bonus shares. See Bonus info below. 

Investment Incentives and Bonuses*


Friends and Family Early Birds

Invest within the first two weeks hours and receive 15% bonus shares

Super Early Bird Bonus

Invest within the first three weeks and receive 10% bonus shares

Early Bird Bonus

Invest within the first four weeks and receive and 5% bonus shares




5% Bonus Shares

5% Bonus Shares + Private Owners Group (bi-monthly investor newsletter, invitations to trade shows, and more)


10% Bonus Shares

10% Bonus Shares + Private Owners Group


15% Bonus Shares

15% Bonus Shares + Private Investor Call with Founder + Private Owners Group 


20% Bonus Shares

20% Bonus Shares + Private Investor Call with Founder + Private Owners Group

*All perks occur when the offering is completed.

Irregular Use of Proceeds

The Company might incur Irregular Use of Proceeds that may include but are not limited to the following over $10,000: Salary payments made to one’s self, a friend or relative. Any expense labeled “Travel and Entertainment”. Vendor payments.



Stellaris Team Spotlight - Peter Morse

Peter has always been a tinkerer, modifying things for other uses or improvements.  Recumbent bicycles, water bicycles, windmills, off grid solar installations, various Arduino controlled “things”, sailboat modifications (“Bilge Yoga” in the bowels of his ketch sailboat, see photo), are all things on the fun to do list.

Working as a Machinery Engineer has been a natural extension of all the side projects.  Peter started in the food industry, repairing and designing food processing equipment, moved into film processing equipment, and later to photovoltaic cell processing equipment.  Peter has designed, built, and debugged all types of machines, from cam driven motions to vision guided motions to assist manufacturing. He is always learning new things and either bringing this expertise in to work or back to the home workshop for further fun.

Peter has a BSME from Tufts University, has also learned on his own; CAD (prefers Solidworks), sheet metal bending, and other fabrication techniques, some simple electrical engineering , and various programming languages.


Stellaris Team Spotlight - Rob Janoch

Rob has spent his professional career developing processes and building equipment for the photovoltaics industry, as well as shorter stints supporting instant photography and computer manufacturing.  Most recently he helped found solar module manufacturer Evergreen Solar, co-founded photovoltaic test equipment manufacturer BrightSpot Automation, and established his own engineering consulting business.  Rob has done a variety of engineering and management projects supporting solar crystal growth, cell fabrication, and module fabrication.

Rob is a mechanical engineer by training.  He has BS in Engineering and Applied Science from Yale and a MS in Mechanical Engineering from MIT. His MIT Masters thesis was a computer model of film-cooled gas turbines used for combined cycle power generation.  (He abandoned fossil fuels after graduation.) Rob has an innate curiosity about all things mechanical - every year he attends  the Model Engineering Show in Boston to see small scale working models of all sorts of mechanical devices, and perhaps most importantly, to grab a beer with some of his techno-buddies.

For fun, he enjoys woodworking and boating, both of which are embodied by the boat in the photo above that Rob built.  Note the low carbon footprint.  In addition to oars, the boat can be powered by a jib and sprit-rigged mainsail.


California paves the way for 100% building electrification and opens a huge new market for solar photovoltaic windows

 The California Air Resources Board on Nov. 16, 2022 issued its Scoping Plan to decarbonize California. For buildings the plan is to achieve nearly zero carbon emissions through 100% electrification. This will greatly expand the potential market for Stellaris’ solar PV windows in the largest state in the US.  Highlights of the CARB plan: 

  • End natural gas use for newly constructed buildings.
  • Revise California’s building standards to require zero-emission new buildings.
  • Develop building performance standards for existing buildings. 
  • Achieve three million all-electric homes by 2030 and seven million by 2035.
  • All new buildings must include non-CO2 emitting space heating and appliances, and space heating and appliances in existing buildings are replaced at the end of their useful life with non-CO2 emitting units. 

In sum, all new and existing buildings in California will eventually have to be 100% electric. This will pave the way for a huge market for solar photovoltaic widows to self- generate the building’s electricity and reduce the building’s electrical load and greatly increased electricity costs. 


Also see, LA Times Article: 

If that isn’t enough to generate a market for solar PV windows, in August 2022 the California Energy Commission adopted an updated Energy Code for new and renovated buildings to permit the state and local governments to require use of heat pumps, solar energy and battery storage to 100% electrify and decarbonize buildings. 


Moreover, the City of Los Angeles has proposed to ban natural gas in new buildings. See, 

At least 57 cities and towns in California have already enacted ordinances to require zero carbon emissions in new buildings or require 100% electrification in new and renovated buildings. See, CIQ Pro: Gas Ban Monitor: East Coast policies advance; Pa. gas ban prohibition fails (

The requirement for 100% electric buildings is rising into a tidal wave across the US. For example, the State of Washington will require heat pumps in its residential building code, banning use of fossil fuels for space heating. See:

New York City has already required  zero carbon emissions for new buildings, see, and many other cities are following its lead. 

The result will be to create a huge new potential market for Stellaris’s ClearPowerTM solar photovoltaic windows.

Stellaris is very excited and intends to become the standard for the new building industry across the U.S and internationally.

Stellaris very much appreciates your isupport and interest in its crowd funding campaign.

Stay tuned!


Stellaris expands its R&D footprint

Stellaris will be enhancing its R&D capabilities next week when it moves into the Millyard Technology Park in Nashua NH.  The  new, additional space will greatly assist us in making ClearPower components in larger volume, developing automated assembly procedures, and providing enhanced resources for testing.

The Millyard Technology Park is an exquisitely renovated, 150,000 square foot former textile mill that is home to a robust and eclectic collection of high-tech companies and offices.


New York City's building decarbonization goals need a technology boost

Good read: Article in national daily publication Utility Dive by Stellaris senior advisor Arnie Wallenstein on New York City's mandates to decarbonize buildings and the challenges they present:


New Provisional Patent Application Filed for ClearPower Improvements

Thanks to the support from the StartEngine campaign, Stellaris has made important improvements to its ClearPower photovoltaic window technology that:

  • Greatly reduces material costs
  • Simplifies manufacturing
  • Improves electrical performance
  • Makes its good tranparency even better
  • Further differentiates ClearPower from competing technologies

Stellaris has protected this new intellectual property by filing a provisional patent application with the US Patent and Trademark Office (USPTO) this Wednesday. (A provisional patent, filed up to a year before a formal application, importantly establishes a priority date as an  international marker for rights to the intellectual property.)


All Electric Building Up 67% from 2020

Architect, the Journal of the American Society of Architects (AIA), reports an increased number of all-electric buildings on the way to meet AIA's 2030 Commitment of carbon-neutral buildings by 2030 and emphasizes the need for architecture and design firms to transform their practice to significantly reduce emissions. Worth checking out their press release.....


Sustainability Takes Center Stage at Glasstec 2022

                                                                         Photo credit: Glass MAgazine

Major international glass trade show Glasstec 2022 was just held in Dusseldorf Germany. Its theme was promoting sustainability and mitigating climate change. The show highlighted innovative solutions for sustainability and green buildings,  including  new energy-saving facade technologies.  The show was reported in Glass Magazine:

Stellaris will endeavor to exhibit at similar major US and international  glass and architectural trade shows to show off ClearPower as a very effective climate mitigating tool for buildings.


Photovoltaic Curtain Wall at Balenciaga's Flagship Store in Miami

                                                                             Photo credit: Glass Magazine

This is a great example of a prestiguous retailer showing off its commitment to renewable energy while using its windows to make a big contribution to the store's electrical load.

This project received Glass Magazine's annual award for the most innovative curtain wall.


We've passed $200k!!

Thanks to everyone for their support, but we need to keep the momentum going.  If you have thought about investing in Stellaris, please take a few minutes this weekend and do it. We need your support!

Do I hear $300K??

Owners bonus
Stack Owner's Bonus & Rewards!

Members get an extra 10% shares in addition to rewards below!


Multiple investments in an offering cannot be combined to qualify for a larger campaign perk. Get rewarded for investing more into Stellaris.


StartEngine Owner’s Bonus

This offering is eligible for the StartEngine Owner’s 10% Bonus program. For details on this program, please see the Offering Summary section below.



5% Bonus Shares + Private Owners Group (bi-monthly investor newsletter, invitations to trade shows, and more)



10% Bonus Shares + Private Owners Group.



15% Bonus Shares + Private Investor Call with Founder + Private Owners Group.



20% Bonus Shares + Private Investor Call with Founder + Private Owners Group.




Cancel anytime before 48 hours before a rolling close or the offering end date.


REWARDSWe want you to succeed and get the most out of your money by offering rewards and memberships!
SECUREYour info is your info. We take pride in keeping it that way!
DIVERSE INVESTMENTSInvest in over 200 start-ups and collectibles!

With Regulation A+, a non-accredited investor can only invest a maximum of 10% of their annual income or 10% of their net worth per year, whichever is greater. There are no restrictions for accredited investors.

With Regulation Crowdfunding, non-accredited investors with an annual income or net worth less than $124,000, are limited to invest a maximum of 5% of the greater of those two amounts. For those with an annual income and net worth greater than $124,000, he/she is limited to investing 10% of the greater of the two amounts.

At the close of an offering, all investors whose funds have “cleared” by this time will be included in the disbursement. At this time, each investor will receive an email from StartEngine with their Countersigned Subscription Agreement, which will serve as their proof of purchase moving forward.

Please keep in mind that a company can conduct a series of “closes” or withdrawals of funds throughout the duration of the campaign. If you are included in that withdrawal period, you will be emailed your countersigned subscription agreement and proof of purchase immediately following that withdrawal.

StartEngine assists companies in raising capital, and once the offering is closed, we are no longer involved with whether the company chooses to list shares on a secondary market, or what occurs thereafter. Therefore, StartEngine has no control or insight into your investment after the close of the live offering. In addition, we are not permitted to provide financial advice. You may want to contact a financial professional to discuss possible investment outcomes.

For Regulation Crowdfunding, investors are able to cancel their investment at any point throughout the campaign up until 48 hours before the closing of the offering. Note: If the company does a rolling close, they will post an update to their current investors, giving them the opportunity to cancel during this timeframe. If you do not cancel within this 5-day timeframe, your funds will be invested in the company, and you will no longer be able to cancel the investment. If your funds show as ‘Invested’ on your account dashboard, your investment can no longer be canceled.

For Regulation A+, StartEngine allows for a four-hour cancelation period. Once the four-hour window has passed, it is up to each company to set their own cancelation policy. You may find the company’s cancelation policy in the company’s offering circular.

Once your investment is canceled, there is a 10-day clearing period (from the date your investment was submitted). After your funds have cleared the bank, you will receive your refund within 10 business days.

Refunds that are made through ACH payments can take up to 10 business days to clear. Unfortunately, we are at the mercy of the bank, but we will do everything we can to get you your refund as soon as possible. However, every investment needs to go through the clearing process in order to get sent back to the account associated with the investment.

Both Title III (Regulation Crowdfunding) and Title IV (Reg A+) help entrepreneurs crowdfund capital investments from unaccredited and accredited investors. The differences between these regulations are related to the investor limitations, the differing amounts of money companies are permitted to raise, and differing disclosure and filing requirements. To learn more about Regulation Crowdfunding, click here, and for Regulation A+, click here.

@ 2022 All Rights Reserved

Apple Store Logo

Get To Know Us

Our Team


Important Message


Unless indicated otherwise with respect to a particular issuer, all securities-related activity is conducted by regulated affiliates of StartEngine: StartEngine Capital, LLC, a funding portal registered here with the US Securities and Exchange Commission (SEC) and here as a member of the Financial Industry Regulatory Authority (FINRA), or StartEngine Primary, LLC, a broker-dealer registered with the SEC and FINRA/SIPC . You can review the background of our broker-dealer and our investment professionals on FINRA’s BrokerCheck here. StartEngine Secondary is an alternative trading system regulated by the SEC and operated by StartEngine Primary, LLC, a broker dealer registered with the SEC and FINRA. StartEngine Primary, LLC is a member of SIPC and explanatory brochures are available upon request by contacting SIPC at (202) 371-8300.

Investment opportunities posted and accessible through the site are of three types:

1) Regulation A offerings (JOBS Act Title IV; known as Regulation A+), which are offered to non-accredited and accredited investors alike. These offerings are made through StartEngine Primary, LLC (unless otherwise indicated). 2) Regulation D offerings (Rule 506(c)), which are offered only to accredited investors. These offerings are made through StartEngine Primary, LLC. 3) Regulation Crowdfunding offerings (JOBS Act Title III), which are offered to non-accredited and accredited investors alike. These offerings are made through StartEngine Capital, LLC. Some of these offerings are open to the general public, however there are important differences and risks.

Any securities offered on this website have not been recommended or approved by any federal or state securities commission or regulatory authority. StartEngine and its affiliates do not provide any investment advice or recommendation and do not provide any legal or tax advice with respect to any securities. All securities listed on this site are being offered by, and all information included on this site is the responsibility of, the applicable issuer of such securities. StartEngine does not verify the adequacy, accuracy or completeness of any information. Neither StartEngine nor any of its officers, directors, agents and employees makes any warranty, express or implied, of any kind whatsoever related to the adequacy, accuracy, or completeness of any information on this site or the use of information on this site. See additional general disclosures here.

By accessing this site and any pages on this site, you agree to be bound by our Terms of use and Privacy Policy, as may be amended from time to time without notice or liability.

Canadian Investors Investment opportunities posted and accessible through the site will not be offered to Canadian resident investors. Potential investors are strongly advised to consult their legal, tax and financial advisors before investing. The securities offered on this site are not offered in jurisdictions where public solicitation for offerings is not permitted; it is solely your responsibility to comply with the laws and regulations of your country of residence.

California Investors Only – Do Not Sell My Personal Information (800-317-2200). StartEngine does not sell personal information. For all customer inquiries, please write to

StartEngine’s Reg A+ offering is made available through StartEngine Crowdfunding, Inc. This investment is speculative, illiquid, and involves a high degree of risk, including the possible loss of your entire investment. For more information about this offering, please view StartEngine’s offering circular and risk associated with this offering.