Top California Energy Startups (226)

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...

Sunworks, Inc. (NASDAQ: SUNW) is a premier provider of high performance solar power systems. We are committed to quality business practices that exceed industry standards and uphold our ideals of ethics and safety. Sunworks continues to grow its presence, expanding nationally with regional and local offices. We strive to consistently deliver high quality, performance oriented solutions for customers in a...

Reflect Orbital is developing technology to sell sunlight to those who need it. We imagine a future where sunlight continues powering solar farms and providing lighting after the sun sets. We’re a small team of engineers who make progress by building things quickly and iteratively. Time is our greatest constraint. Join us.

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...

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.

Energy and Defence systems, purpose-engineered from first principles. 800+ installations, 25+ countries, 30+ years — designed and built entirely in-house.

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.

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,...

ZEROVA, a subsidiary of Phihong, emerged as a standalone company on September 1, 2022. Its primary objective is to specialize in the EV Charging Market. ZEROVA offers a comprehensive range of EV charging solutions for both commercial and passenger vehicles. Leveraging its robust research and development capabilities and extensive manufacturing expertise, ZEROVA develops high-quality hardware and software products tailored to...

Pivotal Systems provides best-in-class smart flow monitoring and process control technology designed for the global semiconductor and high-tech industries. Pivotal’s portfolio includes its patented Gas Flow Controllers (GFC™) and Flow Ratio Controllers (FRC). At Pivotal Systems, we aim to enhance fab productivity and capital efficiency with our innovative solutions.

Focused on sustainability and innovation, esVolta develops, owns, and operates reliable utility-scale energy storage assets across the entire lifecycle - delivering value for utilities, energy users, and investors.

Galvanize Climate Solutions (“Galvanize”) is a global investment firm focused on generating long-term value from the energy transition. Founded in 2021 by Katie Hall and Tom Steyer, and led by co-executive chairs Hall, Steyer, and Secretary John Kerry – Galvanize invests across asset classes including venture capital and growth equity, public equities, and real estate, to accelerate commercially competitive solutions,...

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.

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...

Physicians, Scientists, and Engineers (PSE) for Healthy Energy is a multidisciplinary, nonprofit research institute that studies the way energy production and use impact public health, climate and the environment. We are dedicated to supplying evidence-based scientific and technical information on the public health, environmental, and climate dimensions of energy production and use. We put our mission into practice by integrating...

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...

ACTuate is a clean energy tech company delivering energy efficiency and resource optimization solutions to small-to-midsize buildings with repeatable footprints across the country. Through deployment of our innovative hardware and software solutions, we help our customers reduce their carbon footprint and manage their business resources in a more effective and efficient manner. We are a small and growing company looking...

Tachyus creates technology to optimize energy production for the oil and gas industry. Our platform unites analytics software and sensors that measure real-time data to increase production, decrease lease operating expenses, and boost profits. Our team has deep software engineering, hardware design and data science experience from building OpenGov, California Common Sense, Tesla’s battery safety system, the world's most advanced...

Planted is redefining solar deployment by simplifying every step, from planning to power. By combining advanced software, high-density terrain-following arrays, and automated installation into one integrated platform, Planted has created a smarter way to develop and build utility-scale solar power plants. We’re expanding our team of ambitious, curious, and hands-on engineers and operators who want to accelerate the clean energy transition....

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...