Top California Greentech Startups (130)

Revivn is a fully integrated hardware lifecycle solution, promoting global responsibility while providing IT with enterprise-class service and security. Working with companies like Instacart, Lyft & Teach for America we are changing the way companies view old technology with a new model that focuses on repurposing electronics. In partnering with Revivn, companies make the vital choice to responsibly retire, repurpose,...

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...

Watershed is the enterprise climate platform. Leading companies like Walmart, Stripe, Spotify, Klarna, and Twitter use Watershed's software to measure, reduce, and report their carbon emissions. With its state-of-the-art carbon data engine, in-house climate experts, and marketplace of high-quality decarbonization initiatives, Watershed provides audit-grade emissions data to power business value creation, regulatory compliance, and global climate impact. Watershed’s advisors and...

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...

Treehouse is a software-enabled installation platform for electrification projects. Our mission is to accelerate the decarbonization of the places we live and work by simplifying the electrification journey. By operating as a centralized, end-to-end partner, Treehouse helps companies scale electrification programs nationwide and deliver seamless, delightful installation experiences for customers.

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....

Range Energy focuses on the electrification of commercial transportation, operating within the clean energy and transportation sectors. The company offers electric trailers and solutions that aim to reduce diesel consumption and emissions in heavy trucking while also extending the range of zero-emission vehicles. Its products are primarily targeted towards the commercial transportation industry. It was founded in 2021 and is...

Essel specializes in ensuring your projects success by managing the ideal outcome in 3 key areas: Workforce Augmentation: For the AEC & Emergency Response sectors - we make sure you have the workforce to execute on your project. Whether it be high volume environmental technicians or subject matter experts - we have the resources to provide the workforce that will...

WRA, Inc. is an employee-owned environmental consultancy firm composed of planners, engineers, and scientists. They specialize in navigating complex projects involving wildlands, parks, community spaces, and infrastructure. Their mission is to cultivate a sustainable future where people and the environment thrive, aiming to leave lands better than they found them through responsible project management and long-standing community relationships.

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.

Buildings globally use 14% of all potable water, but very few buildings reuse that water. Epic Cleantec is on a mission to change that. Epic Cleantec (“Epic”) is a full-service water technology company that deploys onsite water treatment and reuse systems into individual buildings or groups of buildings, converting building wastewater (greywater, blackwater, stormwater, rainwater) into highly purified treated water for...

Rhoic makes on-demand, on-site chemicals with a new class of programmable reactors using electric fields. These reactors produce critical industrial chemicals from abundant feedstocks like air and water without fossil fuel inputs or hazardous transport. Rhoic's near-term beachhead is the oxidizer supply chain for bipropellant spacecraft, specifically NTO, MON-3, and MON-25, which today flow from a single domestic source that...

SINAI Technologies Inc. is mitigating climate change by enabling more intelligent emission measurement, scenario analysis and decarbonization strategy tools for organizations. We are the world’s leading Decarbonization-as-a-Service platform to measure, analyze, reduce and price emissions, using science-based methodologies. #decarbonize #carbonpricing

Lunar Energy was founded to make energy cleaner, safer, and more reliable. We build products for home electrification to move the world towards 100% clean energy.

We are a green environmental testing and consulting firm, dedicated to providing the highest level of customer service available in the industry. Contact our office at (858) 433-3290 or email us at [email protected] to schedule testing!

At Valar Atomics, we're redefining what's possible in energy. Our mission is to make clean, high-temperature nuclear power scalable—unlocking abundant energy for industry, hydrogen, and next-generation manufacturing. We are a team of builders, engineers, and operators who believe nuclear energy should be fast to deploy, factory-made, and built for the real world. Our first pilot plant in Orangeville, Utah will...

Reli. is a family-owned business built around strong values and a passion to serve our customers. Our drive stemmed from seeing a need for custom-tailored quality products at wholesale prices & quantities. We wanted to be able to put quality first and still be able to provide honest pricing. With our global and domestic operations, we have the freedom to center each and every decision around our valued...

Span is a startup focused on remodeling electric circuits for older homes, providing a digital alternative to traditional fuse boxes to help families better manage the flow of power to their appliances.

ENFOS is an enterprise software environmental management solution for companies faced with liabilities associated with remediation and decommissioning projects. Founded in 2000, ENFOS serves customers in Oil and Gas, Transportation, Manufacturing, Chemicals and Energy/Utilities. Clients include BP, 7-Eleven, The U.S. Defense Logistics Agency, Dow, Ashland, ConocoPhillips, Sunoco, TravelCenters of America, Celanese Corp., Pacific Gas and Electric, and more.

Aurora is creating a future of solar for all. We’re putting the power of data and technology into the hands of every solar professional to make solar adoption simple and predictable. Our cloud-based platform uses data, automation, and AI to streamline workflows and grow solar businesses faster. As a fast-growing Series D company, we’re disrupting the clean energy industry and...