Top California Energy Startups (226)
Amprius is a leading Lithium-Ion battery developer. Amprius's silicon technology was originally developed at Stanford University and enables dramatic improvements in the energy density and specific energy of Lithium-Ion batteries. Amprius is backed by some of the world’s leading investors, including Trident Capital, VantagePoint Venture Partners, IPV Capital, Kleiner Perkins Caufield & Byers, and Dr. Eric Schmidt.
Blumen is a one stop software for renewables, energy, grid, and data center project development. Turn project files into permitting intelligence and engineering documents in minutes. Slash consulting costs, avoid critical risks, and prevent rework caused by regulatory complexity.
Energy Impact Partners LP (EIP) is a global venture capital firm leading the transition to a sustainable future. EIP brings together entrepreneurs and the world’s most forward-looking energy and industrial companies to advance innovation. With over $2.5 billion in assets under management, EIP invests globally across venture, growth, credit, and infrastructure – and has a team of over 70 professionals...
Silicon Valley Clean Energy (SVCE) is a community-owned agency providing carbon-free electricity to a majority of Santa Clara County communities, motivated by climate action.
CLEAResult Consulting, Inc. is a company based out of 4301 WESTBANK DR, Austin, Texas, United States.
SoftBank Group Chairman Masayoshi Son started SB Energy to deploy renewable energy at the scale required to combat climate change. Today, SB Energy is a leading Climate Infrastructure and Technology Platform headquartered in the San Francisco Bay Area and backed by SoftBank Group Corp and funds managed by the Infrastructure and Power strategy of Ares Management Corporation. SB Energy develops,...
Flipturn is the unified control center for EV charging operations—built for both fleets and businesses. Whether you're managing a private depot or a public charging site, Flipturn helps you stay online, cut costs, and keep EV operations running smoothly. Monitor energy usage, manage access, streamline payments, and unlock insights across your chargers and vehicles—all in one place. Interested in learning more? Let’s...
Utilities and energy technology providers rely on our analytics solutions to tell people exactly what they can expect to pay when making clean energy decisions, like changing to a time-of-use rate plan, buying an electric vehicle, installing solar and more. The result is less strain on the electric grid, happier customers and increased consumer investment in sustainable technologies. Working at...
Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy. We are rapidly designing and building a pulsed magnetic fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems. Our plans are ambitious. We have...
Key Solutions opened its doors for business in 1989 and subsequently incorporated in 1990. We began in a small office in downtown Cincinnati, Ohio as an IBM Reseller of Midrange Equipment. Our headquarters (including an expansive Technical Center) is now located in Wilder, Kentucky in close proximity to downtown Cincinnati. Over the years we have worked closely with our clients to...
Alphataraxia is an energy-focused quantitative investment management group with offices outside of Washington, DC and Newport Beach, CA. With decades of experience, our professionals focus on data-centric investment strategies in today's energy markets. We focus on understanding and predicting outcomes on electricity grids, where our positions can have a significant impact on real-world outcomes: helping to stabilize energy prices and...
Powerline develops AI systems for monitoring and operation of energy assets, enhancing the performance in power markets and reducing emissions.
Adapture Renewables is a solar project developer (and M&A shop), owner and operator. The company leverages its proven track record, deep domain expertise and comprehensive in-house development, EPC management, legal and project finance services to efficiently and effectively drive solar projects from origination to long-term operation, and at every stage in-between. Backed by KIRKBI, Adapture Renewables has the financial footing...
Energy. Environment. Economics. Three cornerstones that shape today’s transition to clean energy resources. E3 has operated at the nexus of energy, environment, and economics since its inception in 1989. We have long been a pioneer and thought leader on the topics key to the energy transition such as how to plan and operate highly renewable energy systems, what policies are...
Deep Isolation offers an innovative solution to secure and dispose of spent nuclear fuel from commercial nuclear reactors. Our horizontal drill hole technology offers both safety and low cost. While the drilling technology is standard, Deep Isolation is the first company proposing to use this method for the safe isolation of spent nuclear fuel under a billion tons of rock...
Mariana Minerals is a software-first, vertically integrated minerals company focused on supplying critical materials for energy, AI, and defense technologies. It combines digital infrastructure with mineral project development to secure reliable and sustainable supply chains.
Luminus is a vertically integrated, fast-growing high-tech company that engages in high-power Light-Emitting-Diode (LED) solid-state lighting, lasers, and SiC power semiconductors for a variety of application areas, including industrial UV, IR, medical, projection displays, high-end illumination lighting, horticulture lighting, grid energy storage, EV and automotive industries. Luminus is at the forefront of the ongoing solid-state lighting revolution and SiC power...
Our legacy of leadership in next generation solar energy includes developing the nation’s largest solar cluster and the first plant to beat fossil fuel prices. Today, we are expanding the boundaries of existing technologies to build one of the largest portfolios of smart power plants with integrated storage, capable of providing 30 million people with low-cost, zero-emission energy – day...
BoxPower provides clean, reliable, and affordable energy to rural consumers. Our ecosystem of software and hardware solutions optimize the performance and accelerate the deployment of solar plus storage microgrids. From energy audit to operation, BoxPower provides turnkey engineering, construction, and management services.


































