Cleantech advances are making an impact on the largest markets of the global economy, offering enormous opportunities for value creation in both nascent and mature industries. As an industry pioneer, RockPort is at the forefront of this wave of innovation.
We’re a leading venture capital firm that partners with cleantech entrepreneurs around the world. We collaborate with management teams to foster growth and create value, building innovative companies that bring disruptive technologies and products to the 21st century.
Our sector expertise combines with our broad global and policy experience to deliver proven results. We have a track record of providing the insights and the networks that propel companies to success.
Enphase Energy provides solar energy management systems for residential and commercial markets. The company pioneered the industry’s first networked solar energy system, which includes high-efficiency micro-inverters, communications gateways and web-based analytics and visualization. Founded in 2006 and based…
Project Frog designs, manufactures and delivers high-performance, sustainable, and quick-to-deploy buildings that utilize modular construction technology. Frog units are architecturally stylish, highly functional, energy efficient, and adaptable for a variety of commercial applications including education, government, healthcare, and retail.
Southwest Windpower is the recognized global leader in the design, manufacturing and distribution of small wind systems (400-3000 watts). The 22 year old company has been a pioneer in the development of wind technology and has built and…
Aspen Aerogels supplies reinforced, nanoporous aerogel insulation products that are two to four times more effective than other insulation materials. Aspen’s patented manufacturing process leverages nanotechnology through the production of materials in a form factor that can be…
Lilliputian Systems is developing a next generation micro fuel cell system for portable electronics and wireless devices. These fuel cells can provide a significantly longer run time than traditional batteries and are environmentally friendly. The company employs a…
EcoFactor is a leader in home energy management, providing user-friendly active management of residential and small commercial thermostats using a Software-as-a-Service (SaaS) model. The company delivers 20% – 40% reductions in HVAC-related energy expenditures with minimal upfront cost…
Southwest Windpower is the recognized global leader in the design, manufacturing and distribution of small wind systems (400-3000 watts). The 22 year old company has been a pioneer in the development of wind technology and has built and…
Satcon Technology Corporation (NASDAQ: SATC) is an industry leader in the development and manufacture of power electronics and control systems. Satcon offers diversified and sophisticated power products for the alternative energy, hybrid-electric vehicle, grid support, high reliability electronics…
Tioga Energy is a renewable energy provider that fast-tracks energy financing for commercial, government and non-profit organizations. Through deep, trusted relationships with solar industry partners, Tioga Energy provides simple, reliable, low-cost and long-term access to clean energy options…
RockPort Capital successfully exited its investment in Comverge (NASDAQ: COMV) through an IPO. Comverge is a leading Clean Energy company that provides innovative solutions to peak energy demand challenges through Demand Response
Deerpath Energy was acquired by Southwest Windpower in July 2010. As a division of Southwest, Deerpath’s mission is to penetrate the small commercial and municipal user-friendly market with distributed generation options utilizing community-scale wind.
Solar Universe is a rapidly growing residential and commercial network of solar installers. The company has developed state of the art software, training, financing, customer acquisition, equipment packages, marketing materials, and branding to facilitate the quick and profitable…
Using advanced electrochemical and material formation processes originally developed in the Semiconductor, Solar, & other non traditional battery segments, ENOVIX is revolutionizing the basic energy storage cell used in Lithium-ion and Lithium polymer rechargeable batteries. With its revolutionary…
Enki Technology, Inc. is working to improve PV module efficiencies through the development of low-cost anti-reflective and anti-soiling coatings.
Northern Power has been a leader in mid-sized wind power technology for over 30 years, and is bringing its gearless technology expertise to bear on both distributed and large-scale utility markets. The company’s hallmark 100kW turbine platform now…
Eka Systems was acquired by Cooper Industries(NYSE:CBE) in April 2010. The company manufactures and markets a wireless mesh technology designed for large scale deployments in the utility, energy, and submetering markets.
Gridco Systems is developing advanced power management systems for the distribution grid. Recent technology advances have made available high-reliability, high-efficiency and cost-effective medium voltage power electronics. Utilizing these advances, Gridco Systems' products will enable utilities to actively…
NanoGram Devices Corporation, a spin-out from NeoPhotonics Corporation, was acquired by Wilson Greatbatch (NYSE: GB) in March 2004. Nanogram Devices leveraged its proprietary capabilities in the production of nanomaterials to produce energy storage devices for the medical devices…
Recurve was acquired by Tendril in February 2012. Recurve makes software for contractors who perform home energy audits and residential retrofits, work that ultimately is designed to make customer's homes more comfortable, healthy, and energy efficient.
Qnovo is developing a next generation battery management system which will have a significant impact on lithium battery pack performance. Its technology enables greatly expanded battery performance for applications ranging from consumer electronics to transportation
FirstFuel Software is the energy intelligence company that helps utilities engage their commercial customers and rapidly achieve energy efficiency across commercial building portfolios. The FirstFuel Rapid Building Assessment platform uses advanced analytics to remotely benchmark building energy performance, creating…
SustainX is an energy storage technology developer whose solution is cost effective, low maintenance, non-toxic, and highly efficient. The technology is being developed to provide a solution for enhancing the value of renewable energy, commercial and industrial energy…
Enphase Energy provides solar energy management systems for residential and commercial markets. The company pioneered the industry’s first networked solar energy system, which includes high-efficiency micro-inverters, communications gateways and web-based analytics and visualization. Founded in 2006 and based…
Lilliputian Systems is developing a next generation micro fuel cell system for portable electronics and wireless devices. These fuel cells can provide a significantly longer run time than traditional batteries and are environmentally friendly. The company employs a…
Soliant Energy was acquired by EMCORE in March 2011. The company was a leading developer of concentrated photovoltaic (CPV) systems for commercial rooftop applications. Soliant's rooftop CPV system combined best-of-breed module design with patent-pending TipTilt Tracking™ that offers…
RockPort Capital successfully exited its investment in Evergreen Solar, Inc. (ESLR) through NASDAQ. Evergreen Solar develops, manufactures and markets STRING RIBBON™ solar power products using its proprietary, low-cost wafer technology.
Clean Diesel Technologies, Inc. (Nasdaq: CDTI) is a vertically integrated global manufacturer and distributor of emissions control systems and products, focused on the heavy duty diesel and light duty vehicle markets. Clean Diesel utilizes its proprietary patented Mixed…
Nanogram Corporation was acquired by Teijin Limited in July 2010. It develops and licenses technology enabling the manufacture and deposition of nanomaterials for applications in optical, electronic, and energy storage devices and products.
Gazelle, a service of Second Rotation, Inc., is committed to providing an easy, fast, and safe way for consumers to get cash for selling unwanted electronics or to recycle them responsibly. To date, more than 175,000 consumers have…
Aspen Aerogels supplies reinforced, nanoporous aerogel insulation products that are two to four times more effective than other insulation materials. Aspen’s patented manufacturing process leverages nanotechnology through the production of materials in a form factor that can be…
Microseismic’s technology, surface-based, passive seismic monitoring, is a game changer for the development of unconventional oil and gas, particularly shale gas. Widely used by leading US producers of natural gas, the company’s services significantly enhance production through better…
EcoSMART Technologies develops and markets proprietary pesticide products derived from natural plant oils. The Company’s technology is based on the natural defenses that plants and trees use to protect themselves against insects and pathogens. Formed in 1992, EcoSMART’s…
GaN Systems provides next generation power conversion semiconductors for cleantech applications using a unique, island-based gallium nitride topology, building on over 10 years of process research at the National Research Council of Canada. The Company’s upcoming Cool Switching™…
Clean Diesel Technologies, Inc. (Nasdaq: CDTI) is a vertically integrated global manufacturer and distributor of emissions control systems and products, focused on the heavy duty diesel and light duty vehicle markets. Clean Diesel utilizes its proprietary patented Mixed…
HydroPoint and its partners provide WeatherTRAK irrigation management solutions which include irrigation control hardware and a subscription-based service. WeatherTRAK technology calculates customized irrigation schedules and automatically adjusts irrigation as local weather changes. By using WeatherTRAK to apply the…
Qnovo is developing a next generation battery management system which will have a significant impact on lithium battery pack performance. Its technology enables greatly expanded battery performance for applications ranging from consumer electronics to transportation
Achates Power is developing a radically different two-stroke diesel engine, which has exceptional fuel economy and power density. The engine is modular and scalable and can be used in a wide range of transportation and stationary power applications.…
Clean Diesel Technologies, Inc. (Nasdaq: CDTI) is a vertically integrated global manufacturer and distributor of emissions control systems and products, focused on the heavy duty diesel and light duty vehicle markets. Clean Diesel utilizes its proprietary patented Mixed…
Streetline's mission is to make smart cities a reality through the use of sensor-enabled mobile and web applications. As the leading global provider of smart parking solutions to cities, airports, universities, and private garages, Streetline's pioneering technology connects…
Lilliputian Systems is developing a next generation micro fuel cell system for portable electronics and wireless devices. These fuel cells can provide a significantly longer run time than traditional batteries and are environmentally friendly. The company employs a…
Using advanced electrochemical and material formation processes originally developed in the Semiconductor, Solar, & other non traditional battery segments, ENOVIX is revolutionizing the basic energy storage cell used in Lithium-ion and Lithium polymer rechargeable batteries. With its revolutionary…
EcoSMART Technologies develops and markets proprietary pesticide products derived from natural plant oils. The Company’s technology is based on the natural defenses that plants and trees use to protect themselves against insects and pathogens. Formed in 1992, EcoSMART’s…
InVisage Technologies, Inc. is a venture-backed fabless semiconductor company based in Menlo Park, Calif. that is developing QuantumFilm, a breakthrough image-sensing technology that will replace silicon. Its first product enables the high-fidelity, high resolution images from handheld devices…
NeoPhotonics (NYSE: NPTN) is a leading provider of photonic integrated circuit-based modules, components and subsystems for use in optical communications networks. The company’s genesis was as a technology company with the ability to integrate active and passive optical…
Aspen Aerogels supplies reinforced, nanoporous aerogel insulation products that are two to four times more effective than other insulation materials. Aspen’s patented manufacturing process leverages nanotechnology through the production of materials in a form factor that can be…
Enki Technology, Inc. is working to improve PV module efficiencies through the development of low-cost anti-reflective and anti-soiling coatings.
GaN Systems provides next generation power conversion semiconductors for cleantech applications using a unique, island-based gallium nitride topology, building on over 10 years of process research at the National Research Council of Canada. The Company’s upcoming Cool Switching™…
NanoGram Devices Corporation, a spin-out from NeoPhotonics Corporation, was acquired by Wilson Greatbatch (NYSE: GB) in March 2004. Nanogram Devices leveraged its proprietary capabilities in the production of nanomaterials to produce energy storage devices for the medical devices…
Nanogram Corporation was acquired by Teijin Limited in July 2010. It develops and licenses technology enabling the manufacture and deposition of nanomaterials for applications in optical, electronic, and energy storage devices and products.
Hycrete was acquired by Broadview Technologies in April 2012. Hycrete manufactures a concrete performance additive that transforms concrete into a hydrophobic, corrosion-resistant, waterproof construction material.
Clean Diesel Technologies, Inc. (Nasdaq: CDTI) is a vertically integrated global manufacturer and distributor of emissions control systems and products, focused on the heavy duty diesel and light duty vehicle markets. Clean Diesel utilizes its proprietary patented Mixed…
Renaissance Lighting was acquired by Acuity Brands Lighting in July 2010. The company offers a full range of LED-based specification-grade downlighting luminaires and has developed an extensive intellectual property portfolio related to advanced LED optical solutions and technologies. …
LUXIM is the world leader in Light Emitting Plasma technology. These products are used in applications as varied as street and area lighting, projection display, medical instrument, and entertainment lighting. In most applications LUXIM saves 50% in energy…
FirstFuel Software is the energy intelligence company that helps utilities engage their commercial customers and rapidly achieve energy efficiency across commercial building portfolios. The FirstFuel Rapid Building Assessment platform uses advanced analytics to remotely benchmark building energy performance, creating…
RockPort Capital successfully exited its investment in Evergreen Solar, Inc. (ESLR) through NASDAQ. Evergreen Solar develops, manufactures and markets STRING RIBBON™ solar power products using its proprietary, low-cost wafer technology.
Deerpath Energy was acquired by Southwest Windpower in July 2010. As a division of Southwest, Deerpath’s mission is to penetrate the small commercial and municipal user-friendly market with distributed generation options utilizing community-scale wind.
EcoFactor is a leader in home energy management, providing user-friendly active management of residential and small commercial thermostats using a Software-as-a-Service (SaaS) model. The company delivers 20% – 40% reductions in HVAC-related energy expenditures with minimal upfront cost…
Recurve was acquired by Tendril in February 2012. Recurve makes software for contractors who perform home energy audits and residential retrofits, work that ultimately is designed to make customer's homes more comfortable, healthy, and energy efficient.
Exclara is a fabless semiconductor company that has developed proprietary digital power management platforms specifically tailored to Solid State Lighting solutions. Exclara leverages its digital capabilities and highly efficient power management topologies to provide the highest possible system…
Eka Systems was acquired by Cooper Industries(NYSE:CBE) in April 2010. The company manufactures and markets a wireless mesh technology designed for large scale deployments in the utility, energy, and submetering markets.
Tioga Energy is a renewable energy provider that fast-tracks energy financing for commercial, government and non-profit organizations. Through deep, trusted relationships with solar industry partners, Tioga Energy provides simple, reliable, low-cost and long-term access to clean energy options…
RockPort Capital successfully exited its investment in Comverge (NASDAQ: COMV) through an IPO. Comverge is a leading Clean Energy company that provides innovative solutions to peak energy demand challenges through Demand Response
Satcon Technology Corporation (NASDAQ: SATC) is an industry leader in the development and manufacture of power electronics and control systems. Satcon offers diversified and sophisticated power products for the alternative energy, hybrid-electric vehicle, grid support, high reliability electronics…
Enphase Energy provides solar energy management systems for residential and commercial markets. The company pioneered the industry’s first networked solar energy system, which includes high-efficiency micro-inverters, communications gateways and web-based analytics and visualization. Founded in 2006 and based…
Soliant Energy was acquired by EMCORE in March 2011. The company was a leading developer of concentrated photovoltaic (CPV) systems for commercial rooftop applications. Soliant's rooftop CPV system combined best-of-breed module design with patent-pending TipTilt Tracking™ that offers…
Southwest Windpower is the recognized global leader in the design, manufacturing and distribution of small wind systems (400-3000 watts). The 22 year old company has been a pioneer in the development of wind technology and has built and…
Project Frog designs, manufactures and delivers high-performance, sustainable, and quick-to-deploy buildings that utilize modular construction technology. Frog units are architecturally stylish, highly functional, energy efficient, and adaptable for a variety of commercial applications including education, government, healthcare, and retail.
Hycrete was acquired by Broadview Technologies in April 2012. Hycrete manufactures a concrete performance additive that transforms concrete into a hydrophobic, corrosion-resistant, waterproof construction material.
HydroPoint and its partners provide WeatherTRAK irrigation management solutions which include irrigation control hardware and a subscription-based service. WeatherTRAK technology calculates customized irrigation schedules and automatically adjusts irrigation as local weather changes. By using WeatherTRAK to apply the…
SustainX is an energy storage technology developer whose solution is cost effective, low maintenance, non-toxic, and highly efficient. The technology is being developed to provide a solution for enhancing the value of renewable energy, commercial and industrial energy…
Aspen Aerogels supplies reinforced, nanoporous aerogel insulation products that are two to four times more effective than other insulation materials. Aspen’s patented manufacturing process leverages nanotechnology through the production of materials in a form factor that can be…
