Climate tech startups in San Francisco

Richard Lowenthal, Dave Baxter, Harjinder Bhade & Praveen Mandal

Founded 2007 (as Coulomb Technologies); operates one of the world's largest EV-charging networks (NYSE: CHPT), selling AC/DC charging hardware plus cloud software to businesses, fleets and drivers across Nor...

Harrold Rust, Ashok Lahiri & Murali Ramasubramanian

Founded 2007; public (NASDAQ: ENVX) maker of 100% silicon-anode lithium-ion batteries. Its AI-1 smartphone cell was independently validated in 2025 as the highest energy density reported for a smartphone bat...

Jagdeep Singh, Tim Holme & Fritz Prinz

Founded 2010, spun out of Stanford; develops solid-state lithium-metal EV batteries and is public (NYSE: QS). In Aug 2025 it began construction of a 1 GWh 'Cobra' pilot line after unveiling an 844 Wh/L silic...

Lynn Jurich, Ed Fenster & Nat Kreamer

Founded 2007; the largest US residential solar and home-battery company (NASDAQ: RUN), which pioneered the solar-as-a-service leasing model. Increasingly bundles rooftop solar with storage into virtual-power...

Gregg Dixon & Dana Guernsey

Founded 2016; a distributed-energy-resource (virtual power plant) platform that aggregates commercial and industrial demand-flexibility to sell into wholesale power markets. Went public via SPAC (Broadscale)...

Dan Cook, Bryce Tennant & Michael Stowell

Founded 2015; develops lithium-sulfur batteries and 3D-graphene 'supermaterials.' In July 2025 it acquired Europe's largest battery-energy-storage manufacturing operation from bankrupt Northvolt, plus a Pola...

Will Regan & Eric Lander

Founded 2023; pursuing inertial-confinement fusion driven by a pulser-based electromagnetic 'pulsed magnetic' driver rather than lasers. Stunned the sector with a ~$900M Series A in 2024 (General Catalyst, B...

Ryan Pandya & Perumal Gandhi

Founded 2014; pioneer of precision-fermentation animal-free dairy proteins (whey) that a third-party LCA found cut greenhouse-gas emissions up to 97% and blue-water use up to 99% vs conventional dairy. Now r...

Gene Berdichevsky, Gleb Yushin & Alex Jacobs

Founded 2011 by Tesla employee #7 Gene Berdichevsky; makes silicon-anode battery materials that boost energy density. Raised a $375M Series G in June 2024 (total >$900M) to complete its Moses Lake, WA manufa...

Taylor Francis, Christian Anderson & Avi Itskovich

Founded 2019 by ex-Stripe carbon-tools builders; enterprise carbon-accounting and climate-disclosure software that measures footprints, sets science-based targets and automates regulatory reporting. Raised a...

Etosha Cave, Kendra Kuhl & Nicholas Flanders

Founded 2015 (as Opus 12), spun out of Stanford; its CO2 electrolyzer turns captured CO2, water and renewable electricity into 'E-Jet' sustainable aviation fuel and other fossil-free chemicals. Announced $64...

Andrew Ponec, David Bierman & Justin Briggs

Founded 2017; makes thermal batteries that store renewable electricity as heat in glowing-hot solid carbon blocks to deliver zero-carbon industrial heat and power. Raised a $150M Series B in early 2024 (Deca...

Peter Reinhardt, Shaun Meehan & Kelly Hering

Founded 2018 by Segment co-founder Peter Reinhardt; converts agricultural biomass (corn stover) into bio-oil via pyrolysis and injects it into geologic storage for permanent carbon removal. Raised a $100M Se...

Shashank Samala & Noah McQueen

Founded 2020; limestone-based direct air capture that accelerates natural mineralization to pull CO2 from the air in ~3 days. Operates North America's first commercial DAC facility in Tracy, CA and signed a ...

Matt Rogers & Harry Tannenbaum

Founded 2020 by Nest co-founder Matt Rogers; a countertop kitchen bin that dries and grinds food scraps overnight into dry 'Food Grounds' that are mailed back to be turned into animal-feed ingredient, divert...

Brennan Spellacy & Aaron Grunfeld

Founded 2020; an API-first marketplace and infrastructure layer for buying carbon credits and carbon removal, letting companies integrate offsetting/removal into their products and procurement. Has raised mo...

Pete von Behrens & John O'Donnell

Founded 2020; the Rondo Heat Battery stores renewable power in brick stacks to supply continuous high-temperature industrial heat. Closed a $60M Series B in June 2024 with Breakthrough Energy Ventures, Micro...

Arch Rao

Founded 2018 by former Tesla Powerwall lead Arch Rao; reinvents the home electrical panel as a smart, software-controlled hub for solar, batteries, EV charging and electrified appliances. Raised a $96.5M Ser...

Apoorv Bhargava & John Taggart

Founded 2018; software that helps utilities manage EV charging load, orchestrating managed charging to avoid grid upgrades as EV adoption surges. Partners with utilities including PG&E, DTE and Xcel. One of ...

Sky Dauphin & Mark Cyffka

Founded 2022; builds modular direct-air-capture machines that pull CO2 from ambient air for downstream utilization or sequestration, targeting a lower-cost chemical process. An early-stage Berkeley DAC start...

nitrogen-fixing microbial agtech

Berkeley-based agtech using gene-edited soil microbes to replace synthetic nitrogen fertilizer for corn, wheat and other crops, cutting emissions and input costs. Has raised ~$617M. The flagship Bay Area agt...