Khosla Ventures
Khosla Ventures is a California-based venture capital firm founded in 2004 by Vinod Khosla. It provides capital and strategic guidance to startups across stages, focusing on technology-driven companies in areas such as artificial intelligence, climate and sustainability, enterprise software and services, fintech, digital health, medical technology and diagnostics, therapeutics, consumer products, and frontier technologies. The firm backs bold ventures with the potential to disrupt markets and improve lives, supporting companies from early to growth stages and working closely with entrepreneurs to apply science, technology and innovative business models. While primarily investing in North American technology companies, Khosla Ventures pursues opportunities globally and emphasizes experimentation and impact alongside financial returns. The firm also maintains related impact initiatives that support entrepreneurs addressing socio-economic challenges in emerging markets.
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Past deals in Electrical Equipment
Mainspring
Series F in 2025
Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.
Mainspring
Series E in 2022
Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.
Mainspring
Series E in 2022
Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.
Mainspring
Series D in 2021
Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.
Mainspring
Series C in 2018
Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.
Varentec
Series C in 2015
Varentec, Inc. is a company that specializes in power electronics equipment aimed at optimizing power delivery for the electric grid. Founded in 2002 and based in Santa Clara, California, Varentec develops innovative solutions, including a grid optimization system and a web-based software platform for device control and data visualization. Its products are designed to enhance energy savings and reduce voltage volatility, contributing to a more resilient and cost-effective electrical distribution system. The company's technology focuses on managing grid-edge devices and transforming power delivery infrastructure, catering to both industrial applications and broader energy needs.
Varentec
Series B in 2014
Varentec, Inc. is a company that specializes in power electronics equipment aimed at optimizing power delivery for the electric grid. Founded in 2002 and based in Santa Clara, California, Varentec develops innovative solutions, including a grid optimization system and a web-based software platform for device control and data visualization. Its products are designed to enhance energy savings and reduce voltage volatility, contributing to a more resilient and cost-effective electrical distribution system. The company's technology focuses on managing grid-edge devices and transforming power delivery infrastructure, catering to both industrial applications and broader energy needs.
Varentec
Series A in 2012
Varentec, Inc. is a company that specializes in power electronics equipment aimed at optimizing power delivery for the electric grid. Founded in 2002 and based in Santa Clara, California, Varentec develops innovative solutions, including a grid optimization system and a web-based software platform for device control and data visualization. Its products are designed to enhance energy savings and reduce voltage volatility, contributing to a more resilient and cost-effective electrical distribution system. The company's technology focuses on managing grid-edge devices and transforming power delivery infrastructure, catering to both industrial applications and broader energy needs.
Danotek Motion Technologies
Series B in 2011
Danotek Motion Technologies Inc, founded in 2001, in Ann Arbor, Michigan is an ISO 9001:2000 certified technology innovator. Danotek develops clean, energy efficient, generators, electrical conversion systems, brushless motors and electronics controls for alternative energy and advanced transportation applications.
Danotek has developed a number of patent-pending innovative products that include variable speed permanent magnet (PM) generators and brushless motors with integrated electronics for wind power, fuel cell, CHP, auxiliary power and electric and hybrid electric vehicles. Their designs represent industry leadership and are expected to replace inefficient and unreliable systems with added extensive control features.
Mainspring
Seed Round in 2010
Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.
Varentec
Venture Round in 2010
Varentec, Inc. is a company that specializes in power electronics equipment aimed at optimizing power delivery for the electric grid. Founded in 2002 and based in Santa Clara, California, Varentec develops innovative solutions, including a grid optimization system and a web-based software platform for device control and data visualization. Its products are designed to enhance energy savings and reduce voltage volatility, contributing to a more resilient and cost-effective electrical distribution system. The company's technology focuses on managing grid-edge devices and transforming power delivery infrastructure, catering to both industrial applications and broader energy needs.
Danotek Motion Technologies
Venture Round in 2009
Danotek Motion Technologies Inc, founded in 2001, in Ann Arbor, Michigan is an ISO 9001:2000 certified technology innovator. Danotek develops clean, energy efficient, generators, electrical conversion systems, brushless motors and electronics controls for alternative energy and advanced transportation applications.
Danotek has developed a number of patent-pending innovative products that include variable speed permanent magnet (PM) generators and brushless motors with integrated electronics for wind power, fuel cell, CHP, auxiliary power and electric and hybrid electric vehicles. Their designs represent industry leadership and are expected to replace inefficient and unreliable systems with added extensive control features.
Firefly International Energy
Series C in 2008
Firefly International Energy is a developer and manufacturer of advanced lead-acid battery technologies, focusing primarily on carbon and graphite foam-based solutions. Launched as a spin-out from Caterpillar in May 2003, the company targets military and commercial industries with its innovative microcell foam-based battery technology. Firefly International Energy aims to enhance the performance and efficiency of lead-acid batteries, positioning itself as a key player in the energy storage sector.
Topanga Technologies
Venture Round in 2008
Topanga Asia specializes in the development of advanced plasma lighting technology, offering energy-efficient and reliable lighting solutions for industrial and commercial applications. The company has created innovative solid-state driven lighting products that utilize an electrode-free high-intensity discharge (HID) bulb. These products are designed to replace traditional lighting sources such as metal halide, high-pressure sodium, halogen, induction, and LED lights, achieving superior lumen output per watt. By focusing on efficiency and low maintenance, Topanga Asia enables businesses to significantly reduce their lighting and energy costs while enhancing overall illumination in outdoor and commercial environments.
SJS
Series A in 2008
SJS Control Technologies Inc. is a low cost provider of construction, maintenance and turn key electrical and process automation services.
They are also the distributor of RFID Inc. for Canada and Mexico, supplying automatic identification equipment for a variety of purposes.
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