At Best Startup California we track over 300,000 Californian startups and over 1,500,000 people who hold key positions in these companies. We use this directory of startups to highlight top employees, founders and organisations we think deserve more appreciation than they are currently getting.
We’ve ranked the top 77 Energy companies in San Jose, California. The companies, startups and institutions listed in this article are all exceptional companies, well worth a follow. We have included links to their websites, socials and CrunchBase (if you’re interested in their financials).
We selected the organisations listed in this article based on:
- Track record
- Executive leadership
- Market share
- Innovation
- ESG rating
Our Data – We source our data from OSINT (open source intelligence) and public directories such as Crunchbase, SemRush and many more. The data from these sources should be treated with a degree of caution and verified yourself.
Top Energy Companies & Startups (San Jose, California)
QuantumScape
QuantumScape is a renewable energy company that develops solid-state battery technology to increase the range of electric cars.
Founder(s): Fritz Prinz, Jagdeep Singh, Tim Holme
Location: San Jose, California, United States
Industries: Battery, Energy, Energy Storage, Renewable Energy
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TDK Ventures
TDK Ventures is the Corporate VC arm of TDK Corporations that invests globally in hard-tech entrepreneurs.
Founder(s): Nicolas Sauvage
Location: San Jose, California, United States
Industries: Advanced Materials, CleanTech, Electric Vehicle, Energy, Industrial, Medical, Venture Capital
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Siva Power
Siva Power develops third generation thin film PV technologies.
Founder(s): Damoder Reddy
Location: San Jose, California, United States
Industries: Electronics, Energy, Government, Manufacturing
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ionobell
Ionobell is a battery R&D company with expertise in battery material development and cell development.
Founder(s): Robert Ionescu, Robert Neivert
Location: San Jose, California, United States
Industries: Energy Storage, Manufacturing
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ANAFLASH
ANAFLASH is developing energy efficient semiconductor solutions for edge IoT devices with its standard logic based technologies.
Founder(s): Seung-Hwan Song
Location: San Jose, California, United States
Industries: Energy, Internet of Things, Semiconductor
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Avogy
Avogy, Inc. is a leader in advancing energy efficiency and reliability of power conversion systems
Founder(s): Isik C. Kizilyalli
Location: San Jose, California, United States
Industries: Energy, Manufacturing, Semiconductor
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Nanosolar
Nanosolar prints solar cells and assembles panels to enable the most cost-efficient solar electricity.
Founder(s): Brian Sager
Location: San Jose, California, United States
Industries: Nanotechnology, Renewable Energy, Solar
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SoloPower
SoloPower is a producer of thin-film photovoltaic cells and modules that help solar electricity generation.
Founder(s): Homayoun Talieh
Location: San Jose, California, United States
Industries: Clean Energy, Energy, Energy Efficiency, Solar
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APX
APX has continuously provided innovative technology and service solutions for the energy and environmental markets.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Energy Management, Oil and Gas
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Fourth Wave Energy
Fourth Wave Energy is a climate change solutions company focused on eliminating greenhouse gas emissions from the built environment.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Environmental Consulting
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Power Design Services
Power Design Services is a designer, manufacturer and distributor of a variety of electronic circuit boards.
Founder(s):
Location: San Jose, California, United States
Industries: Consumer Electronics, Electrical Distribution, Electronics, Energy, Manufacturing
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Adara Power Inc.
Energy storage software and analytics for commercial and industrial
Founder(s): Greg Maguire, Neil Maguire
Location: San Jose, California, United States
Industries: Clean Energy, Energy Storage, Software, Solar
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SolFocus
SolFocus is a manufacturer of solar energy systems based on concentrator photovoltaic (CPV) technology.
Founder(s): Gary D. Conley
Location: San Jose, California, United States
Industries: Energy, Manufacturing, Renewable Energy, Solar
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Scifiniti
Developing innovative solutions that enhance performance and significantly lower the cost of silicon-based products for energy.
Founder(s): Raanan Zehavi
Location: San Jose, California, United States
Industries: CleanTech, Energy, Semiconductor
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Cypress Envirosystems
Cypress Envirosystems provides solutions to retrofit existing commercial buildings and industrial facilities worldwide.
Founder(s): Harry Sim
Location: San Jose, California, United States
Industries: Building Material, Commercial, Energy, Industrial
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Monolithic Power Systems
Monolithic Power Systems (MPS) is a high performance analog semiconductor company headquartered in San Jose, California.
Founder(s): Michael R.
Location: San Jose, California, United States
Industries: Electronics, Energy, Hardware, Semiconductor
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Solaxy Group Corp.
Developer of carbon offset projects and marketer.
Founder(s): Abbas Mashaollah
Location: San Jose, California, United States
Industries: CleanTech, GreenTech, Renewable Energy, Sustainability
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GreenPowerMonitor
GreenPowerMonitor provides monitoring, control and asset management solutions for renewable energy plants.
Founder(s): Carlos Pacheco, Federico Bernades, Humberto Roca, Juan Carlos Arévalo, Xavi Vallespí
Location: San Jose, California, United States
Industries: Clean Energy, Energy, Enterprise Software, Solar
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Networked Energy Services (NES) Corporation
Networked Energy Services Corporation is a utilities company offering energy control network and services.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Renewable Energy
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Valin Corporation
Based in San Jose, Calif., Valin Corporation, one of Inc.’s 500/5000 Fastest Growing Companies is the leading technical solutions provider
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Industrial Automation, Natural Resources
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NRG Clean Power
CleanTech / Renewables
Founder(s): Oren Tamir
Location: San Jose, California, United States
Industries: Battery, Clean Energy, CleanTech, Electric Vehicle, Renewable Energy, Solar
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Sierra Turbines
Ultra-Compact 10kW Endurance and Mobile Power to Inspire Small Unmanned Aerial Systems (Drones & sUAS) and Distributed Power.
Founder(s): Dolin Pereira
Location: San Jose, California, United States
Industries: Aerospace, Energy
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Enteligent Inc.
Solar product company focused on higher efficiency and harnessing more solar electricity
Founder(s): Sean Burke
Location: San Jose, California, United States
Industries: Clean Energy, Energy, Solar
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Sun-Net
Sun-Net focuses on software development and consulting services for the power and gas sector to enhance production and cost reduction.
Founder(s):
Location: San Jose, California, United States
Industries: Consulting, Energy, Information Technology, Software
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Adaptive Digital Power
Adaptive Digital Power, a fabless semiconductor company, focuses on the digital power segment of the power management IC market.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Manufacturing, Semiconductor
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Cassatt
Cassat provides software solutions and technologies for operating green data centers.
Founder(s): Bill Coleman
Location: San Jose, California, United States
Industries: Data Center, Energy Efficiency, Software
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Energy Internet Corporation
Energy Internet Corporation unites engineering and hardware systems to produce efficient energy storage and renewable energy distribution.
Founder(s):
Location: San Jose, California, United States
Industries: Electrical Distribution, Energy, Energy Efficiency, Renewable Energy
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Siemens Telegyr Systems
Supplies solutions for electricity, gas and water utilities, and energy consumers.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Oil and Gas
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Enki Technologies
Develops, manufactures and markets high value, multi-functional coatings. Initially focused on the photovoltaic industry.
Founder(s):
Location: San Jose, California, United States
Industries: Advanced Materials, Consumer Electronics, Energy, Manufacturing
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Biofuelbox
BioFuelBox Corporation is an alternative energy company providing modular bio-refineries for converting waste materials into biodiesel.
Founder(s): Patricia Bright, Steven Perricone
Location: San Jose, California, United States
Industries: Biofuel, CleanTech, Energy, Oil and Gas
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Clean Solar
Clean Solar is a solar installation company that offers comprehensive, custom solar solutions to meet specific electricity needs.
Founder(s): Jeff Ritchey, Randy Zechman
Location: San Jose, California, United States
Industries: Commercial, Energy, Renewable Energy, Residential, Solar
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Fat Spaniel Technologies
Fat Spaniel Technologies is a provider of critical monitoring and reporting services for renewable energy monitoring.
Founder(s): Christiaan Beekhuis
Location: San Jose, California, United States
Industries: CleanTech, Energy, Information Technology, Project Management, Renewable Energy, Solar
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Prospect Silicon Valley
ProspectSV is a nonprofit urbantech innovation hub focused on solutions for sustainable, smart cities.
Founder(s): Doug Davenport
Location: San Jose, California, United States
Industries: Clean Energy, CleanTech, Communities, Electric Vehicle, Energy Efficiency, Incubators, Power Grid, Smart Cities, Transportation
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CarbonBridge
CarbonBridge is a climate-action company that uses credits from sustainably obtained soil carbon and renewable energy.
Founder(s): Manu Pillai
Location: San Jose, California, United States
Industries: Computer, Renewable Energy
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Ultora
Ultora is a developer of energy-storage devices such as super-capacitors based on catalyst-free, purified carbon nanotubes.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Energy Storage
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Solactron
Solactron is a developer of solar technology to support electricity generation.
Founder(s): Jehad Abushama
Location: San Jose, California, United States
Industries: Energy, Energy Efficiency, Energy Management, Solar
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BIA Controls
BIA Controls specializes in installing and maintaining energy management, loading control systems and building automation.
Founder(s):
Location: San Jose, California, United States
Industries: Customer Service, Energy, Energy Management, Smart Building
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ICOM Mechanical Inc.
Mechanical contractor providing innovative solutions in HVAC, piping, sheet metal, & maintenance to commercial and industrial clients.
Founder(s):
Location: San Jose, California, United States
Industries: CAD, Commercial Real Estate, Construction, Energy Efficiency, Green Building, Project Management, Property Management
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8point3 Energy Partners
8point3 Energy Partners owns and operates solar energy generation projects.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Solar
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D2 Solar
D2solar is a one-of-a-kind engineering services company, specializing in photovoltaic technologies
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Energy Efficiency, Manufacturing, Solar
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CGI Technologies
CGI Technologies focuses mainly on green heating and cooling and focuses on thermal management systems.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, GreenTech
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Cyber Switching
Power Management devices and PDU’s
Founder(s):
Location: San Jose, California, United States
Industries: Electronics, Energy
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NavSemi Energy
NavSemi, Inc. designs and develops MCU based power electronics systems for solar and wind applications. It offers digital solar energy
Founder(s): Babu Jain
Location: San Jose, California, United States
Industries: Electronics, Energy, Solar
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StorWatts
StorWatts is a affordable and reliable distributed energy storage platform unlocks the potential of distributed cleantech.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Renewable Energy
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Soleeva Energy, Inc.
Renewable Energy
Founder(s): Ahmad Qazi
Location: San Jose, California, United States
Industries: Renewable Energy
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Green Halo Systems
Green Halo allows contractors, recyclers, and other entities to comply with local, state, and federal recycling guidelines.
Founder(s):
Location: San Jose, California, United States
Industries: Environmental Consulting, Renewable Energy
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Solannex
Solannex manufactures thin film solar modules using a roll-to-roll lamination process.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Manufacturing, Solar
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Altex Technologies
Altex Technologies provides fuels processing and fuel cell power systems, low emission burners and thermal management services.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Fuel, Fuel Cell, Product Management, Project Management
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eIQ Energy
eIQ energy designs and manufactures power electronics that are used in solar photovoltaic systems.
Founder(s): Gene Krzywinski
Location: San Jose, California, United States
Industries: Energy, Manufacturing, Renewable Energy
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Energy Storage North America and Expo
Energy Storage North America and Expo is a largest conference and networking energy company located in San Jose.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Energy Efficiency, Energy Management
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Highlight Solar
Highlight Solar designs and installs solar electric system and energy storage products.
Founder(s):
Location: San Jose, California, United States
Industries: Energy Efficiency, Energy Storage, Solar
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Reylabs Inc.
Allows Building Owners and Tenants To Make Smart Decisions About Energy Consumption Freeing Up Cash Flows
Founder(s): Gabriel Paunescu
Location: San Jose, California, United States
Industries: Energy, Energy Efficiency, Energy Management
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YOURIT
YOURIT is an online service and API that leverages the social networking conventions of profile, feed, tag, and share.
Founder(s): Jim Hunter, Matt Bell
Location: San Jose, California, United States
Industries: Automotive, Clean Energy, Fitness, Health Care, Personalization, Social Media
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Simmitri
Simmitri provides service for homeowners and businesses to increase energy efficiency and building performance.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Renewable Energy, Solar
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Innovative Solar Utility
Innovative Solar Utility is an engineering and manufacturing firm that offers solar solutions, DC combiners, inverter and technical support.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Manufacturing, Renewable Energy, Solar
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CH Reynolds
CH Reynolds provides a comprehensive portfolio of electrical, data construction, managed IT, and energy management services.
Founder(s): Charles Reynolds
Location: San Jose, California, United States
Industries: Electronics, Energy, Energy Management, Information Services, Information Technology, Infrastructure, Real Estate
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Sentec
Sentec Electro Ceramic & Device Group offers various substrate and IC packaging solutions.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Manufacturing
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SunPower – Microinverter Business
SunPower – Microinverter Business offers a micro-inverter system.
Founder(s):
Location: San Jose, California, United States
Industries: Electronics, Energy
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Staten Solar Corporation
Staten Solar Corporation focuses on commercial and utility solar PV applications.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Service Industry, Solar
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Sandium
Sandium is a service provider to air conditioning and heating.Even give perfect tips to all energy.
Founder(s): Art Norins
Location: San Jose, California, United States
Industries: Energy, Renewable Energy
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EcoRender
No more sifting through large volumes of raw data from an energy monitoring tool.
Founder(s):
Location: San Jose, California, United States
Industries: Information Technology, Renewable Energy, Software
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SunPods
SunPods is engaged in the development of solar technologies and installations.
Founder(s): Dan Jaeger, Michael Gumm
Location: San Jose, California, United States
Industries: Energy, Mining Technology, Solar
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IMC POWER
IMC POWER is a supplier of SLA Batteries, Power Test Equipment, and Electronic Loads.
Founder(s):
Location: San Jose, California, United States
Industries: Electronics, Energy, Manufacturing
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Platinum Roofing
Platinum Roofing is a commercial roofing contractor that specializes in providing energy efficient solutions.
Founder(s):
Location: San Jose, California, United States
Industries: Construction, Energy, Energy Efficiency, GreenTech
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TeckQuest
TeckQuest, where he brought to market over 50 revenue-generating energy storage products
Founder(s): Aakar Patel
Location: San Jose, California, United States
Industries: Energy, Renewable Energy
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ABB Wireless
ABB Wireless develops wireless field area network solutions used by utilities, oil & gas, mines and industrial control systems.
Founder(s): Devabhaktuni “Sri” Srikrishna, Narasimha Chari
Location: San Jose, California, United States
Industries: Electronics, Energy, Information Technology, Manufacturing, Network Security, Wireless
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New Power Partners
New Power Partners is a solar energy companyt o make solar work better as a technology.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Renewable Energy, Solar
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Bose Technologies
Bose Technologies provides its services to many government entities to energy, oil and gas and petroleum.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Information Technology, Oil and Gas
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Cogeneration Corporation of America
Cogeneration Corporation of America develops, owns, and manages gas-fired power production facilities, which produce electricity
Founder(s):
Location: San Jose, California, United States
Industries: Energy
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Casa De Mini Storage
Casa De Mini Storage facilitates self storage services.
Founder(s):
Location: San Jose, California, United States
Industries: Clean Energy, Professional Services, Self-Storage
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Bay Area Energy
Bay Area Energy works hard to connect PG&E customers with the most affordable suppliers of energy.
Founder(s):
Location: San Jose, California, United States
Industries: E-Commerce, Energy, Renewable Energy
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Suntactics
Suntactics is a manufacturer of USB solar chargers and designs, manufactures, and distributes portable solar products.
Founder(s):
Location: San Jose, California, United States
Industries: Electronics, Energy, Hardware, Manufacturing, Mobile, Solar
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Renewable Process Solutions
Renewable Process Solutions is a provider of equipment manufacturing and engineering solutions.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Industrial Manufacturing, Manufacturing, Project Management, Renewable Energy
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Free Hot Water
Free Hot Water is a solar thermal engineering & design company that manufactures & distributes various types of solar thermal products.
Founder(s):
Location: San Jose, California, United States
Industries: Environmental Consulting, Manufacturing, Renewable Energy, Solar
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SunPower Corp – Commercial & Industrial Solutions
SunPower Corp – Commercial & Industrial Solutions is a provider of solar technology and energy services.
Founder(s):
Location: San Jose, California, United States
Industries: Energy, Energy Efficiency
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Water Damage Experts
Water Damage Experts is offering emergency services for water and Flood Damage.
Founder(s): Joe Mendiola
Location: San Jose, California, United States
Industries: Clean Energy, Professional Services, Water
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SunPower
SunPower Corporation delivers high-performance solar electric systems worldwide for residential, commercial and utility-scale customers.
Founder(s): Richard Swanson
Location: San Jose, California, United States
Industries: Energy, Renewable Energy, Solar
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