Top California Energy Startups (208)

Fuse is on a mission to accelerate the world's transition to fusion energy while safeguarding humankind. Since 2019, we've built 3 functioning and record-breaking pulsed power fusion machines, with dual applications: commercial power generation (long term), and supporting the US and Allies' national security through radiation effects testing capabilities (immediate term). TITAN, our latest machine, is the world's first high-power...

Anthro is reimagining the future of energy storage. We are an advanced materials company developing solutions to some of the biggest problems facing the battery-dependent electrified future. Spun out of Stanford University, we’ve created high-performance batteries with structural integrity and total safety. Today, our customers use our flexible batteries to create advanced wearable electronics and medical devices with unprecedented functionality....

Radiant is a clean energy startup building a nuclear microreactor. A climate-friendly alternative to diesel generators, Radiant's Kaleidos 1MW microreactor will be the world's first portable, zero-emissions power source that works anywhere. We plan to test our development reactor by 2026 and if successful, it will be the first new commercial reactor design to achieve a fueled test in over...

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.

Utilities use Camus’ grid orchestration software platform to anticipate and actively manage local grid constraints, make smarter infrastructure investments, and reliably serve growing electricity demand. Bridging world-leading distributed systems expertise from Google and Meta with deep power systems experience, Camus is empowering utilities to embrace the transition to a fully electrified, zero-carbon future. Learn more at www.camus.energy

We create abundant and cheap gas out of thin air using atomic energy.

Renewable Properties specializes in developing and investing in small-scale utility and commercial solar energy projects throughout the United States. Led by experienced renewable energy professionals with development and investment experience, we work closely with communities, developers, landowners, utilities and financial institutions looking to invest in large solar energy systems. The Renewable Properties’ team has deep connections throughout the commercial solar energy...

We are an engineering consulting and design firm specializing in custom electronics and end-to-end electronic systems. We develop cross-disciplined solutions and products to help solve some of the world’s most difficult problems by optimizing solutions beyond the first order. Our team members have industrial experience developing power converters, motor controllers, analog sensor drivers, RF amplifiers, antennas, mixed signal circuits, and embedded...

Ensurge is Energizing Innovation™ with ultrathin, flexible, and safe energy storage solutions for wearable devices, connected sensors, and beyond. Ensurge's innovative solid-state lithium battery (SSLB) technology is uniquely positioned to enable the production of powerful, lightweight, and cost-effective rechargeable batteries for diverse applications. The company’s state-of-the-art flexible electronics manufacturing facility, located in the heart of Silicon Valley, combines patented process...

BaRupOn LLC, founded in 2014, is a vertically integrated American manufacturing and technology company operating across multiple industries. Over the past decade, BaRupOn has evolved into a diversified enterprise with capabilities in medical manufacturing, power generation, healthcare logistics, and advanced technologies. With a strong commitment to innovation, operational excellence, and public-sector collaboration, BaRupOn has built a proven track record of delivering...

Orbital Sidekick’s vision is to lead the Energy Transition by building the most robust remote sensing and analytics capability in existence. OSK’s proprietary analytics platform and hyperspectral payload architecture provide persistent space-based monitoring solutions powered by Spectral Intelligence. This unique radiometric speciation and change detection capability enables unparalleled target monitoring services for both commercial and defense users on a global...

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...

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 demand across industries is accelerating at an unprecedented pace, and the need for more deployable, efficient, resilient, and scalable infrastructure has never been more critical. The sustainable energy transition alone demands a 3-5x increase in global electricity generation and consumption. Heron Power is building cutting-edge power electronics for the 21st-century grid. We aim to debottleneck the growth of electricity...

Enervee is in the business of helping people and the planet. We’re a mission driven company here to help people choose affordable efficient products that reduce energy use, utility bills, and CO2 emissions at scale. Our solutions bring together the best in data science, behavioral science, digital product design, and marketing to make efficiency for all a reality.

InCharge Energy is on the frontlines of large-scale emissions reduction, accelerating the electrification of the transportation industry – one commercial fleet at a time. With end-to-end, turnkey solutions for commercial EV infrastructure projects, InCharge Energy equips fleet managers with the top brands in charging hardware and software; customized hardware and software products; short-, mid- and long-range plans for seamless fleet...

Tenergy Corporation is a total mobile power solution provider. Located in the heart of Silicon Valley in Northern California, Tenergy Corporation serves its vast customer base with its technical strength, innovative products, cost effective manufacturing, sophisticated quality control and knowledgeable customer service. We work closely with our clients in a wide spectrum of industries and for various application needs. With...

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.

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.

UpEnergy builds high-quality decarbonization projects that improve lives. We do this with support from partners who believe in a just energy transition in which low-income people are prioritized by climate finance. Our approach in everything we do centers on applying our expertise across climate finance, monitoring and evaluation, engineering, behavioral science, and local operational insights. This ensures we deliver projects...