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Acquired | Acquired

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About OptiSolar

OptiSolar develops and manufacturers photovoltaic (PV) solar panels.

Headquarters Location

31302 Huntwood Avenue

Hayward, California, 94544,

United States

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Expert Collections containing OptiSolar

Expert Collections are analyst-curated lists that highlight the companies you need to know in the most important technology spaces.

OptiSolar is included in 1 Expert Collection, including Renewable Energy.


Renewable Energy

4,019 items

This collection contains upstream and downstream solar companies, as well as those who manufacture and sell products that are powered by solar technology.

OptiSolar Patents

OptiSolar has filed 1 patent.

patents chart

Application Date

Grant Date


Related Topics




Semiconductor device fabrication, Thin film deposition, Plasma processing, Fluid dynamics, Chemical processes


Application Date


Grant Date



Related Topics

Semiconductor device fabrication, Thin film deposition, Plasma processing, Fluid dynamics, Chemical processes



Latest OptiSolar News

Thin film solar startup NovaSolar goes out of business

Jun 20, 2012

0 Comments Thin film solar startup NovaSolar didn’t seem to have much of a chance. It grew out of the 2009 demise of another startup, OptiSolar, but it couldn’t make it a second time around with the same thin film technology that has fallen out of favor among Silicon Valley investors. NovaSolar filed for Chapter 11 in San Jose last Friday, reported Dow Jones . There were signs of trouble at the company earlier. It furloughed employees and suspended the construction of a research center in Fremont, across the bay from Silicon Valley, and a factory in China, reported San Francisco Business Times in February of this year. The company’s office building, also in Fremont, had at least four liens filed by contractors and other vendors for unpaid work. Advertisement What makes NovaSolar an interesting footnote in the history of the solar technology development is its connection to OptiSolar, whose ambition to be a major thin film manufacturer and solar power plant developer crashed rather spectacularly in 2009. The company had just opened a factory in the Sacramento area in the fall of 2008, and 60 Minutes ran a segment showing the then Gov. Arnold Schwarzenegger visiting the new factory. It also had inked a contract to sell power to the local utility, Pacific Gas & Electric, from a planned 550 MW project in central California. But OptiSolar, which had already raised over $300 million in capital, couldn’t raise enough money to continue its operation. Advertisement Founded in part by former Hewlett-Packard CTO Marvin Keshner in 2005, OptiSolar ended up selling its pipeline of unfinished solar power projects to First Solar for $400 million , a move that vaulted First Solar (s FSLR) into a major project developer in North America. Advertisement Apparently some folks at OptiSolar didn’t give up on the company’s original dream, and NovaSolar was formed in 2010 to make thin films and develop projects. Except, this time around, the company wanted to produce the thin films – solar panels with an ultra thin layer of amorphous silicon – in China while keeping R&D in California. The company was backed by at least one Chinese investor, Portcullis TrustNet. Advertisement Amorphous silicon technology was quite popular when silicon, the main ingredient in most of the solar panels today, was expensive in the mid-2000s. But the technology isn’t as efficient at converting sunlight into electricity as silicon and other types of thin film solar technologies, and its initial manufacturing cost was high. Some amorphous silicon solar startups couldn’t reduce their production costs quick enough to compete in a market where silicon prices have dived. The technology isn’t dead, however, and seems to have found a haven in Asia , where some companies have continued to make and sell their amorphous silicon thin films. Advertisement NovaSolar’s demise also reflected an industry-wide  trend of  bankruptcies, factory closures and layoffs by solar manufacturers large and small over the past year as a result of an oversupply of solar panels and plummeting prices for them. American manufacturers who have gone bankrupt include Solyndra, Evergreen Solar, SpectraWatt, Konarka Technologies, and Energy Conversion Devices. Energy Conversion Devices, a developer of amorphous-silicon thin films, said yesterday it would auction its solar assets on June 26. Advertisement

OptiSolar Frequently Asked Questions (FAQ)

  • When was OptiSolar founded?

    OptiSolar was founded in 2005.

  • Where is OptiSolar's headquarters?

    OptiSolar's headquarters is located at 31302 Huntwood Avenue, Hayward.

  • What is OptiSolar's latest funding round?

    OptiSolar's latest funding round is Acquired.

  • How much did OptiSolar raise?

    OptiSolar raised a total of $132M.

  • Who are the investors of OptiSolar?

    Investors of OptiSolar include First Solar, Gardiner Group Capital, Richardson Capital and Kensington Capital Partners.

  • Who are OptiSolar's competitors?

    Competitors of OptiSolar include NEI Corporation, SoloPower, Ampulse, EPV Solar, Solaicx and 11 more.

Compare OptiSolar to Competitors

FTL Solar Logo
FTL Solar

FTL Solar's patent-pending products include pre-fabricated, mass produced photovoltaic (PV) tensile structures. The structures integrate thin film PV with super strength fabric with the aim of creating architecturally refined solar canopies, arrays and enclosures that turn sunlight into electricity.

G24 Innovations Logo
G24 Innovations

G24 Innovations Limited, a UK company (G24i), headquartered in Cardiff, Wales, manufactures and designs solar modules and high value products using the company's DYE SENSITISED THIN FILM (DSTF) technology. The resulting cells and products are extremely lightweight, durable and ideal for integration or embedding into a wide array of products such as mobile electronic devices, tenting systems, and building materials.


Accustrata is a company that received a SBIR Phase IB grant for a project entitled: Real time optical control system for thin film solar cell manufacturing. Their research project relates to a real-time optical control system in the manufacture of next generation thin film solar cells and panels. The proposed system improves thin film solar cell manufacturing by improving the quality of the individual solar cells and panels. It allows manufacturing of more consistent and uniform products resulting in higher solar conversion efficiency and manufacturing yield. The proposed system uses patented miniature fiber optic sensors, installed at many locations in the film deposition chambers. They monitor different spots on the substrate and obtain real time measurements of film properties. The system compares the measured with the targeted values and provides immediate correction, improving film uniformity and narrowing material property distribution. It returns most of the products to their targeted specification, which would otherwise be rejected. This proposal will reduce waste and improve the manufacturing yield and the conversion efficiency of thin film solar cells and panels. It has specific benefits for the large-size solar panels, which are manufactured at higher cost today due to insufficient manufacturing yield. The proposed technology will reduce the time it takes for solar panels to reach grid parity with traditional energy sources. The proposed technology will also facilitate the development of numerous other applications for next generation thin film based products such as photonic crystals, nanotechnology, meta-materials, multi-junction solar cells, printing and counterfeiting control. This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).

Thinkflex Solar

THINKFLEX SOLAR combines the most advantageous characteristic of the two current photovoltaic technologies. The company's modules provide the efficiency of silicon cells and the flexibility of thin film systems through the company's technology and assembly methods. The results are high power output, long lifetime and reliable modules. To simplify installation and transportation these products can be customized in size and shape. The company's products are light weight with favourable aesthetics that are easily adaptable to enhance the creation of new and green designs.

Siva Power Logo
Siva Power

Siva Power, fka Solexant, is developing third generation thin film PV technologies which increase solar cell efficiency, enabling the commercialization of low-cost solar modules. Using printable nano-material technologies, Solexant's flexible solar cells harvest energy from the entire solar spectrum.

Sunlight Aerospace

Sunlight is a privately funded company operating in Colorado, New Jersey, and New Mexico. It was founded in 2007 by a team from Lockheed and Bell Labs with expertise in aerospace, aeronautics, unmanned, and communication systems. The company develops autonomous unmanned airborne vehicles and systems.

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