Best Sustainability Tech Companies in San Francisco, United States
The 339 best Sustainability Tech companies in San Francisco, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Redaptive.
Our analysis of 84 Sustainability Tech companies
$19.4b in tracked funding; 85% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Sustainability Tech companies in San Francisco
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Redaptive 🦄 Provider of fully-funded energy efficiency and sustainability solutions. 60Funding top 16%Moat top 26%Product top 30%Market top 37% All 9 signals ▾Fundingtop 16% Moattop 26% Producttop 30% Markettop 37% Talenttop 38% Globaltop 48% Techtop 49% Growthbottom 40% Newsbottom 21% Funding: Raised $726M across 11 rounds · 11 rounds over 11 yrs (1.0/yr) Moat: Editorial + unicorn rating 9/10 · Unicorn rank vs industry peers · Fliar Intelligence Index 60/100 | $726M | 13 mo ago | 326 | Arvin Vohra Co-Founder & CEO | WordPressMySQLPHP+27 | — | — |
| 2 | Xpansiv 🦄 Offsets and renewable energy marketplace | $712M | 41 mo ago | 277 | Joe Madden CEO | WordPressApple iCloud MailMicrosoft 365+28 | — | 3 partnerships |
| 3 | Aurora Solar 🦄 Provider of software for solar and storage system design and sales | $537M | 51 mo ago | 135 135 → 302 (+124%) · sector median +40% | Christopher Hopper Co-Founder & CEO | WordPressApple iCloud MailGoogle Workspace+37 | 33 patents Automated 3D building modeling and estimation using computer vision and AI algorithms. | — |
| 4 | Fervo Energy Developer of next-generation geothermal projects delivering carbon-free energy 57Funding top 8%Talent top 34%News top 39%Partners top 45% All 9 signals ▾Fundingtop 8% Talenttop 34% Newstop 39% Partnerstop 45% Growthtop 47% Techtop 48% Moattop 48% Marketbottom 44% Globalbottom 39% Funding: Raised $420M across 12 rounds · 12 rounds over 5 yrs (2.4/yr) Talent: Analyst team rating 4/5 · 2 named leaders on record rank vs industry peers · Fliar Intelligence Index 57/100 | $420M | 3 mo ago | 49 | Jack Norbeck Co-Founder and CTO | WordPressApple iCloud MailMicrosoft 365+25 | — | 1 launch · 3 partnerships |
| 5 | BillionToOne 🦄 Provider of cell-free cancer liquid biopsy test | $389M | 23 mo ago | 47 | Oguzhan Atay Co-Founder & CEO | WordPress Block EditorWordPressSentry+20 | 50 patents cfDNA methylation quantification and sequencing assay quality control for diagnostics | 1 launch · 1 partnership · 1 award |
| 6 | BRIDGE Developer of affordable homes for senior living 62Funding top 16%Growth top 40%Tech top 41%Market top 42% All 6 signals ▾Fundingtop 16% Growthtop 40% Techtop 41% Markettop 42% Talentbottom 49% Globalbottom 32% Funding: Raised $250M across 4 rounds · 4 rounds over 4 yrs (1.0/yr) Growth: Headcount 359 → 417 (+16%) across vintages · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 62/100 | $250M | 7 mo ago | 417 417 → 316 (-24%) · sector median +40% | Ken Lombard President & CEO | WordPressMySQLPHP+20 | — | 1 partnership |
| 7 | Bluejay Therapeutics Developer of therapeutics for the treatment of infectious diseases | $243M | 25 mo ago | 3 | Keting Chu Founder | WordPressMySQLPHP+23 | — | — |
| 8 | SPAN Smart energy management technology platform that modernizes residential electrical systems 82Funding top 13%Innovation top 18%Patents top 20%Growth top 28% All 11 signals ▾Fundingtop 13% Innovationtop 18% Patentstop 20% Growthtop 28% Moattop 28% Producttop 35% Talenttop 38% Techtop 42% Customerstop 42% Markettop 43% Globalbottom 42% Funding: Raised $231M across 10 rounds · 10 rounds over 8 yrs (1.2/yr) Innovation: 78 patents (top 21% of patent-holders) · 64 filings since 2022 vs 14 in 2017-21 rank vs industry peers · Fliar Intelligence Index 82/100 | $231M | 5 mo ago | 220 | Jireh Seow Co-Founder | WebflowApple iCloud MailGoogle Workspace+22 | 78 patents Smart electrical panel and load management systems for residential/commercial energy control | 1 job opening |
| 9 | Aligos Therapeutics Developer of therapies to treat hepatologic diseases and viral infections 50Patents top 12%Innovation top 16%Funding top 26%Moat top 35% All 12 signals ▾Patentstop 12% Innovationtop 16% Fundingtop 26% Moattop 35% Partnerstop 40% Techtop 42% Talenttop 45% Globaltop 46% Newstop 47% Marketbottom 46% Growthbottom 32% Fin. healthbottom 25% Patents: 503 patents matched (strict assignee match) · 389 filings since 2022 vs 114 in 2017-21 Innovation: 503 patents (top 5% of patent-holders) · 389 filings since 2022 vs 114 in 2017-21 rank vs industry peers · Fliar Intelligence Index 50/100 | $225M | 16 mo ago | 70 70 → 99 (+41%) · sector median +40% | Lawrence Blatt CEO | DrupalApple iCloud MailPHP+21 | 503 patents RNA interference therapeutics and PD‑L1 immuno‑oncology using heterocyclic siRNA delivery compounds | — |
| 10 | CytoVale Microfluidic-based biomarkers for the early detection of sepsis 60Funding top 19%Product top 21%Patents top 26%Innovation top 32% All 10 signals ▾Fundingtop 19% Producttop 21% Patentstop 26% Innovationtop 32% Moattop 32% Techtop 38% Growthtop 47% Marketbottom 42% Globalbottom 42% Newsbottom 21% Funding: Raised $207M across 14 rounds · 14 rounds over 13 yrs (1.1/yr) Product: 4 distinct product lines · Company stage: Series D rank vs industry peers · Fliar Intelligence Index 60/100 | $207M | 20 mo ago | 58 58 → 120 (+107%) · sector median +40% | — | WordPress Block EditorWordPressMySQL+34 | 38 patents Point-of-care diagnostic platforms for immune activity and sepsis monitoring | — |
| 11 | Inflammatix Provider of diagnostic solutions for systemic infections 74Funding top 17%Patents top 22%Growth top 26%Innovation top 27% All 10 signals ▾Fundingtop 17% Patentstop 22% Growthtop 26% Innovationtop 27% Moattop 28% Talenttop 35% Techtop 43% Marketbottom 45% Globalbottom 42% Newsbottom 18% Funding: Raised $191M across 11 rounds · 11 rounds over 9 yrs (1.2/yr) Patents: 52 patents matched (strict assignee match) · 36 filings since 2022 vs 16 in 2017-21 rank vs industry peers · Fliar Intelligence Index 74/100 | $191M | 21 mo ago | 54 54 → 75 (+39%) · sector median +40% | Jonathan Romanowsky Co-Founder and Chief Business Officer | WordPressMySQLPHP+24 | 52 patents Patents concentrated in chemistry & materials | 1 launch · 2 partnerships |
| 12 | Watershed 🦄 Provider of platform for enterprise sustainability programs, measurement, reporting, and action 78Funding top 18%Growth top 24%Moat top 25%Product top 28% All 11 signals ▾Fundingtop 18% Growthtop 24% Moattop 25% Producttop 28% Talenttop 28% Techtop 34% Newstop 38% Markettop 39% Patentstop 46% Innovationtop 47% Globaltop 49% Funding: Raised $170M across 4 rounds · 4 rounds over 5 yrs (0.8/yr) Growth: Headcount 11 → 225 (+1945%) across vintages · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 78/100 | $170M | 5 mo ago | 225 | Christian Anderson Co-Founder | SanityTurbopackNode.js+25 | 31 patents Shear‑resistant geomembranes and waterproof modular bags for containment and protective applications | — |
| 13 | Particle Developer of a prototype to production connectivity platform for IoT 55Tech top 23%Funding top 24%Customers top 24%News top 30% All 12 signals ▾Techtop 23% Fundingtop 24% Customerstop 24% Newstop 30% Moattop 35% Growthtop 40% Producttop 47% Talentbottom 49% Marketbottom 47% Patentsbottom 39% Globalbottom 39% Innovationbottom 35% Tech: 67 technologies across 6/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 Funding: Raised $130M across 8 rounds · 8 rounds over 12 yrs (0.7/yr) rank vs industry peers · Fliar Intelligence Index 55/100 | $130M | 15 mo ago | 109 109 → 110 (+1%) · sector median +40% | Zach Supalla Co-Founder & CEO | Cart FunctionalityShopifyApple iCloud Mail+31 | 5 patents Pharma skin‑inflammation formulations, audio speaker hardware, VR headset devices, graphic‑design software. | 1 launch |
| 14 | Equilibrium Energy Provider of software solutions for portfolio management 60Funding top 22%Growth top 32%Talent top 38%Moat bottom 48% All 7 signals ▾Fundingtop 22% Growthtop 32% Talenttop 38% Moatbottom 48% Globalbottom 45% Marketbottom 42% Newsbottom 21% Funding: Raised $102M across 5 rounds · 5 rounds over 5 yrs (1.0/yr) Growth: Headcount 18 → 43 (+139%) across vintages · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 60/100 | $102M | 15 mo ago | 43 43 → 97 (+126%) · sector median +40% | Kevin Clifford Co-Founder | — | — | 1 partnership |
| 15 | Molekule Manufacturer of air purification and humidification devices with filtration technology 50Funding top 28%Innovation top 29%Patents top 29%Product top 34% All 13 signals ▾Fundingtop 28% Innovationtop 29% Patentstop 29% Producttop 34% Moattop 38% Techtop 41% Growthtop 45% Customerstop 50% Talentbottom 49% Marketbottom 44% Globalbottom 40% Newsbottom 36% Fin. healthbottom 29% Funding: Raised $97.9M across 6 rounds · 6 rounds over 10 yrs (0.6/yr) Innovation: 77 patents (top 23% of patent-holders) · 39 filings since 2022 vs 38 in 2017-21 rank vs industry peers · Fliar Intelligence Index 50/100 | $98M | 13 mo ago | 92 92 → 81 (-12%) · sector median +40% | Jason Dibona CEO | ShopifyApple iCloud MailMicrosoft 365+16 | 77 patents Indoor air purification using photocatalytic and UV-based filtration technologies | — |
| 16 | Mirvie Provider of non-invasive diagnostic tests for pregnant women 69Growth top 20%Funding top 21%Patents top 24%Talent top 28% All 9 signals ▾Growthtop 20% Fundingtop 21% Patentstop 24% Talenttop 28% Innovationtop 32% Moattop 36% Techtop 46% Globalbottom 40% Marketbottom 35% Growth: Headcount 23 → 35 (+52%) across vintages · Fresh capital in last 24 mo Funding: Raised $90.0M across 4 rounds · 4 rounds over 5 yrs (0.8/yr) rank vs industry peers · Fliar Intelligence Index 69/100 | $90M | 11 mo ago | 35 35 → 41 (+17%) · sector median +40% | Mads Melbye Co-Founder | WebflowReactTypekit+21 | 49 patents Non‑invasive prenatal diagnostics via methylation and RNA biomarkers for pregnancy monitoring | — |
| 17 | Metronome Usage-based invoice management solutions for small businesses 60Funding top 24%Talent top 28%Moat top 31%Growth top 35% All 8 signals ▾Fundingtop 24% Talenttop 28% Moattop 31% Growthtop 35% Techtop 39% Marketbottom 41% Globalbottom 32% Newsbottom 20% Funding: Raised $78.0M across 4 rounds · 4 rounds over 4 yrs (1.0/yr) Talent: 3 named leaders on record · 3 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 60/100 | $78M | 15 mo ago | 50 | Ledion Bitincka Co-Founder and CTO | WebflowSentryApple iCloud Mail+30 | — | 1 partnership |
| 18 | Aclima Provider of air pollution and greenhouse gas measurement solutions | $77M | 21 mo ago | — | Davida Herzl Co-Founder & CEO | HubSpot CMS HubHubSpotcore-js+13 | 80 patents Patents concentrated in computing, sensing & instrumentation | — |
| 19 | NCX Provider of solutions to offset the carbon footprint 69Moat top 21%Funding top 22%Patents top 24%Tech top 25% All 9 signals ▾Moattop 21% Fundingtop 22% Patentstop 24% Techtop 25% Innovationtop 29% Talenttop 38% Growthtop 45% Marketbottom 46% Globalbottom 42% Moat: Editorial + unicorn rating 8/10 · IP moat: 80 patents Funding: Raised $74.4M across 5 rounds · 5 rounds over 6 yrs (0.8/yr) rank vs industry peers · Fliar Intelligence Index 69/100 | $74M | 13 mo ago | 50 | Zack Parisa Co-Founder & CEO | WordPress Block EditorWordPressMySQL+43 | 80 patents Vacuum electron devices—field emission cathodes and multi-beam X‑ray source technologies. | — |
| 20 | Aclima Provider of connected sensor networks for environment awareness 53Moat top 21%Innovation top 22%Patents top 22%Funding top 30% All 10 signals ▾Moattop 21% Innovationtop 22% Patentstop 22% Fundingtop 30% Talenttop 39% Marketbottom 43% Globalbottom 43% Techbottom 38% Growthbottom 30% Newsbottom 18% Moat: Editorial + unicorn rating 8/10 · IP moat: 80 patents Innovation: 80 patents (top 23% of patent-holders) · 44 filings since 2022 vs 22 in 2017-21 rank vs industry peers · Fliar Intelligence Index 53/100 | $64M | 21 mo ago | 51 | Davida Herzl Co-Founder & CEO | — | 80 patents Patents concentrated in computing, sensing & instrumentation | — |
| 21 | Heirloom Provider of direct air capture technology for permanent carbon dioxide removal 40Funding top 26%Talent top 28%Moat top 39%Market bottom 45% All 8 signals ▾Fundingtop 26% Talenttop 28% Moattop 39% Marketbottom 45% Growthbottom 40% Globalbottom 39% Techbottom 37% Newsbottom 19% Funding: Raised $53.0M across 4 rounds · 4 rounds over 5 yrs (0.8/yr) Talent: 3 named leaders on record · 3 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 40/100 | $53M | 6 mo ago | 54 | Noah Mcqueen Co-Founder | Webflow EcommerceWebflowLenis+10 | — | — |
| 22 | Aether Fuels Developer of technology converting waste carbon into sustainable liquid fuels 40Funding top 23%Growth top 35%News top 46%Moat top 48% All 9 signals ▾Fundingtop 23% Growthtop 35% Newstop 46% Moattop 48% Talentbottom 49% Globalbottom 39% Marketbottom 35% Partnersbottom 35% Techbottom 32% Funding: Raised $45.4M across 3 rounds · 3 rounds over 3 yrs (1.0/yr) Growth: Web rank 50,000,000 → 10,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 40/100 | $45M | 5 mo ago | — | Conor Madigan Founder and CEO | Craft CMSApple iCloud MailMicrosoft 365+10 | — | 1 launch · 1 award |
| 23 | Living Carbon Provider of biotechnology based carbon storage solutions 53Partners top 18%Funding top 23%Growth top 25%News top 28% All 9 signals ▾Partnerstop 18% Fundingtop 23% Growthtop 25% Newstop 28% Moattop 39% Talentbottom 49% Techbottom 42% Marketbottom 40% Globalbottom 39% Partners: 5 contract events in 12 mo · Named contractor/client in 5 deals Funding: Raised $36.0M across 5 rounds · 5 rounds over 4 yrs (1.2/yr) rank vs industry peers · Fliar Intelligence Index 53/100 | $36M | 1 mo ago | 25 25 → 38 (+52%) · sector median +40% | Maddie Hall Co-Founder & CEO | WebflowTypekitGoogle Font API+12 | — | — |
| 24 | Vaulted Deep Provider of permanent carbon removal solutions using deep underground waste injection | $32M | 20 mo ago | — | Julia Reichelstein Co-Founder & CEO | WordPress Block EditorCart FunctionalityWordPress+20 | — | 3 job openings · 1 award |
| 25 | Villa Designs, plans, and constructs accessory dwelling units and primary homes | $25M | 19 mo ago | 110 | Zephan McMinn Co-Founder | Apple iCloud MailNode.jsGoogle Maps+25 | — | 1 expansion |
| 26 | Splight Provider of AI-based transmission capacity for the grid 35AI top 35%Funding top 37%Talent bottom 49%Global bottom 48% All 6 signals ▾AItop 35% Fundingtop 37% Talentbottom 49% Globalbottom 48% Techbottom 38% Marketbottom 30% AI: Product described with: ai-based, machine learning Funding: Raised $24.4M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 35/100 | $24M | 9 mo ago | — | Thomas Vadora Co-Founder | Framer SitesReactLenis+5 | — | — |
| 27 | Sunflower Labs Provider of AI-driven home security solutions using smart lighting and drones 62Funding top 31%Innovation top 35%Growth top 35%Patents top 36% All 11 signals ▾Fundingtop 31% Innovationtop 35% Growthtop 35% Patentstop 36% Moattop 37% Talenttop 38% Techtop 43% Newstop 44% AItop 45% Globalbottom 39% Marketbottom 34% Funding: Raised $22.1M across 5 rounds · 5 rounds over 10 yrs (0.5/yr) Innovation: 18 patents (top 54% of patent-holders) · 5 filings since 2022 vs 3 in 2017-21 rank vs industry peers · Fliar Intelligence Index 62/100 | $22M | 7 mo ago | 30 | Chris Eheim Founder + CTO | Node.jsNext.jsstyled-components+10 | 18 patents Autonomous multicopter drones for security surveillance, auto‑landing, and sensor‑network integration | — |
| 28 | Rubi Manufacturer of biobased textiles made from captured carbon emissions 32Funding top 28%Partners top 32%Moat top 35%Talent top 38% All 7 signals ▾Fundingtop 28% Partnerstop 32% Moattop 35% Talenttop 38% Newsbottom 48% Globalbottom 39% Marketbottom 31% Funding: Raised $18.6M across 6 rounds · 6 rounds over 4 yrs (1.5/yr) Partners: 2 partnership announcements in 12 mo (2 in 24 mo) rank vs industry peers · Fliar Intelligence Index 32/100 | $19M | 6 mo ago | 12 12 → 28 (+133%) · sector median +40% | Neeka Mashouf Co-Founder & CEO | — | — | — |
| 29 | Lumen Energy Provider of solutions to manage PPA 40Funding top 36%Talent top 38%Market bottom 43%Global bottom 36% All 4 signals ▾Fundingtop 36% Talenttop 38% Marketbottom 43% Globalbottom 36% Funding: Raised $16.5M · 3 rounds over 5 yrs (0.6/yr) Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 40/100 | $17M | 4 mo ago | 38 | Dave Coen Co-Founder | — | — | — |
| 30 | KAINOMYX Developer of therapeutic solutions for treating malaria and other parasitic diseases | $16M | 21 mo ago | 9 | — | — | — | — |
| 31 | Lighthouse Pharma Developer of therapeutics for neurology and infectious diseases 11Funding top 46%Talent bottom 49%Tech bottom 45%Global bottom 25% All 5 signals ▾Fundingtop 46% Talentbottom 49% Techbottom 45% Globalbottom 25% Marketbottom 18% Funding: Raised $15.2M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Talent: 1 named leader on record · 1 C-suite/founder profile curated rank vs industry peers · Fliar Intelligence Index 11/100 | $15M | 1 mo ago | 4 | Casey Lynch Chief Executive Officer | WixSentryBootstrap+10 | — | 1 job opening |
| 32 | Tandem PV Developer of a perovskite-based solar cell | $14M | 13 mo ago | 21 | Colin Bailie Founder | Wix eCommerceWixSentry+13 | 34 patents Advanced tandem photovoltaic cells with spectral filtering and parameter‑matching for optimized power output | 1 expansion |
| 33 | Glacier Provider of AI-based automated waste sorting robots | $12M | 13 mo ago | 12 | Areeb Malik Co-Founder | LiteSpeedMobXGoogle Font API+3 | — | — |
| 34 | Epic Cleantec Provider of wastewater infrastructure development services | $12M | 18 mo ago | 8 | Igor Tartakovsky Co-founder and Chief Engineer | WordPressMySQLPHP+24 | 22 patents Wastewater treatment with heat recovery, biosolids conversion, and water reuse technologies. | 1 job opening |
| 35 | Jaguar Health Developing gastrointestinal products for human prescription use and animals 50Product top 14%Funding top 24%Innovation top 34%Growth top 43% All 11 signals ▾Producttop 14% Fundingtop 24% Innovationtop 34% Growthtop 43% Talentbottom 49% Marketbottom 48% Fin. healthbottom 48% Moatbottom 45% Newsbottom 41% Techbottom 33% Globalbottom 32% Product: 4 distinct product lines · Company stage: Public Funding: Raised $11.6M across 28 rounds · 28 rounds over 12 yrs (2.3/yr) rank vs industry peers · Fliar Intelligence Index 50/100 | $12M | 5 mo ago | 46 46 → 35 (-24%) · sector median +40% | Lisa Conte Founder & CEO | — | — | 1 launch · 1 partnership |
| 36 | Trellis Bioscience Human antibodies against infectious diseases and cancer | $10M | 14 mo ago | 6 | Stefan Ryser President & CEO | — | 170 patents Antibody-based therapeutics and vaccines targeting RSV and influenza viral proteins. | — |
| 37 | Centivax Provider of drug discovery services 55Growth top 25%News top 28%Funding top 32%Patents top 32% All 9 signals ▾Growthtop 25% Newstop 28% Fundingtop 32% Patentstop 32% Innovationtop 40% Moattop 47% Globalbottom 40% Techbottom 39% Marketbottom 29% Growth: Fresh capital in last 24 mo News: 5 BI events in 12 mo (of 5 tracked, 2 types) · 4 high-value events (IPO/M&A/funding/contracts) in 12 mo rank vs industry peers · Fliar Intelligence Index 55/100 | $10M | 2 mo ago | 19 | — | Cart FunctionalitySquarespace CommerceSquarespace+12 | 39 patents Peptide-derived therapeutic antibodies and low-dose vaccine formulations targeting viral antigens | — |
| 38 | Flair Systems Manufacturer of smart vents for home temperature control 50Tech top 26%Growth top 35%Funding top 37%Talent top 38% All 9 signals ▾Techtop 26% Growthtop 35% Fundingtop 37% Talenttop 38% Customerstop 39% Moattop 39% Producttop 46% Globalbottom 38% Marketbottom 25% Tech: 60 technologies across 6/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 50/100 | $8M | 2 mo ago | 13 | Kenny Tay Co-Founder & CTO | ShopifyBootstrapAmazon Web Services+44 | — | — |
| 39 | TrueMeter Provider of AI utility bill management for multi-site businesses | $6M | 12 mo ago | — | Ozge Islegen-Wojdyla Co-Founder & CTO | WebflowRiveAmazon Web Services+23 | — | 1 award |
| 40 | SkyCool Systems Provider of radiative cooling systems | $5M | 12 mo ago | 11 | Eli Goldstein CEO | WordPressMySQLPHP+21 | — | 1 award |
| 41 | kegg Manufacturer of medical devices for tracking cervical mucus fertility metrics | $4M | 17 mo ago | 6 | Kristina Cahojova Founder & CEO | Cart FunctionalityShopifyShop Pay+29 | — | 1 expansion |
| 42 | Cosmic Robotics Provider of robotics technology services for construction | $4M | 14 mo ago | — | James Emerick Co-Founder & CEO | WebflowGSAPLenis+10 | — | 1 partnership |
| 43 | Current Software Developer of billing software that automates processes and provides real-time analytics | $4M | 8 mo ago | — | Jin Ong Co-Founder & CTO | Node.jsRadix UIReact+15 | — | — |
| 44 | Station A Provider of project developer recommendations using software tools and machine learning | $3M | 12 mo ago | 11 | Jeremy Lucas Co-Founder & Head of Engineering | — | 34 patents Identity access management workflow automation and automated spray dispensing systems | 1 job opening |
| 45 | HomeRise Nonprofit organization that develops and manages supportive housing and provides services to individuals… | $3M | 15 mo ago | — | Janea Jackson CEO | Cart FunctionalityWordPressMySQL+27 | — | — |
| 46 | CNaught Provider of carbon offset API management platform | $2M | 13 mo ago | 4 | Steven Siger Cofounder and COO/CLO | WebflowVimeoVercel+17 | — | 1 launch |
| 47 | C.Scale Developer of a platform for building decarbonization and carbon emission prediction | $2M | 7 mo ago | — | Jack Rusk Co-Founder & CEO | — | 30 patents AI-powered data annotation and dataset preparation for computer vision and document AI | 1 launch |
| 48 | MicroQuin Developer of therapies for treating multiple diseases | $2M | 13 mo ago | 4 | Scott Robinson Founder | — | 13 patents Peptide-based anticancer therapeutics and substituted chalcone small‑molecule drugs | — |
| 49 | InviscidAI Developer of physics-informed artificial intelligence platform for building system optimization | $500K | 5 mo ago | — | Kabir Jain Co-Founder | — | — | — |
| 50 | Verne Provider of rapid electricity deployment solutions for industrial power needs | $500K | 5 mo ago | — | David Jaramillo Co-Founder & CTO | — | 25 patents Cryo‑compressed hydrogen storage vessels with thermal management and composite overwrap systems | — |
Top 12 Sustainability Tech companies in San Francisco
#1
Public · San Francisco, California · founded 2017 · 49 employees$420.2Mraised▾
Developer of next-generation geothermal projects delivering carbon-free energy. It pioneers a new approach to geothermal energy using technologies like horizontal drilling and distributed fiber optic sensing to unlock geothermal resources. It focuses on making geothermal energy a scalable resource and ensures environmental health and safety in its operations. The company aims to decarbonize challenging parts of the electricity sector through geothermal energy.
- Mar 2026Conventional Debt$421M
- Dec 2025Series E$462M
- Jun 2025Conventional Debt$105.5M
- Jun 2025Series D$100M
#2
Series C · San Francisco, California · founded 2014 · 220 employees$231Mraised▾
Smart energy management technology platform that modernizes residential electrical systems. Its solutions replace traditional electrical panels with smart systems that provide homeowners with real-time visibility into household energy usage, circuit-level monitoring, and remote control of appliances and connected devices. It is designed to support modern electrified homes by integrating technologies such as home batteries, electric vehicle chargers, solar systems, HVAC systems, and heat pumps into a centralized energy management ecosystem.
- Jan 2026Series C$163.3M
- Sep 2025Series B$25M
- Jun 2025Grant (prize money)$999.8K
- Apr 2025Grant (prize money)$999.8K
#3
Series C · San Francisco, California · founded 2019 · 225 employees$170.5Mraised▾
Provider of platform for enterprise sustainability programs, measurement, reporting, and action. The platform offers tools for carbon accounting, emissions reduction, and sustainability disclosure preparation. It facilitates target setting and progress tracking toward decarbonization. The platform supports audit-grade data and methodologies vetted by third-party auditors.
- Dec 2025Series C$14.5M
- Jun 2025Grant (prize money)$55K
- Feb 2024Series C$100.5M
- Feb 2022Series B$70M
#4
Series A · San Francisco, California · founded 2019 · 25 employees$36Mraised▾
Provider of biotechnology based carbon storage solutions. It uses biochemistry to enhance a tree natural ability to draw down atmospheric carbon.
- Apr 2026Series A$13M
- Jan 2023Series A$21M
- Feb 2022Grant (prize money)$500K
- Feb 2022Series A$15M
#5
Series D · San Francisco, California · founded 1983 · 417 employees$250Mraised▾
Developer of affordable homes for senior living
- Oct 2025Conventional Debt$175M
- Dec 2024Conventional Debt$71.5M
- Jul 2022Series D$250M
- 2020Conventional Debt$100M
#6
Series E · San Francisco, California · founded 2015 · 326 employees$726.5Mraised▾
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- May 2025Conventional Debt$650M
- Oct 2024Series E$100M
- Aug 2023Conventional Debt$125M
- Mar 2023Series E$250M
#7
Series A · San Francisco, California · founded 2022$45.4Mraised▾
Developer of technology converting waste carbon into sustainable liquid fuels. The company’s technology economically converts waste carbon into liquid fuels. It enables industries to achieve net zero goals through carbon conversion efficiency. The technology converts carbon from multiple sources without requiring extra steps or equipment.
- Jan 2026Series A$15M
- Mar 2025Series A—
- Jun 2024Series A$36.9M
- Dec 2023Seed$8.5M
#8
Series B · San Francisco, California · founded 2020 · 54 employees$53Mraised▾
Provider of direct air capture technology for permanent carbon dioxide removal. The company accelerates natural carbon mineralization to capture carbon dioxide from the atmosphere. It integrates this mineralization approach into direct air capture facilities. The company’s facilities are powered by renewable energy and constructed with labor protections.
- Dec 2025Series B—
- Feb 2025Series B—
- Dec 2024Series B$150M
- Mar 2022Series A$53M
#9
Series A · San Francisco, California · founded 2019 · 4 employees$15.2Mraised▾
Developer of therapeutics for neurology and infectious diseases. It offers a pipeline of drug candidates which include LHP588, is a next-generation gingipain inhibitor for gingivalis infection which causes Alzheimer's disease, Parkinson's disease, and oral dyslapsia. It also offers LHP852 for gingivalis infection and LHP803 for coronavirus infection.
- Apr 2026Series A$15.2M
#10
Series A · San Francisco, California · founded 2019 · 19 employees$10Mraised▾
Provider of drug discovery services
- Mar 2026Series A$37M
- Jul 2025Series A$45M
- Jul 2025Grant (prize money)$24M
- Nov 2022Seed$10M
#11
Series B · San Francisco, California · founded 2014 · 13 employees$7.6Mraised▾
Manufacturer of home automation devices for temperature control. Its device is equipped with Bluetooth, sensors. The vent works with existing internet-connected thermostats to adjust the temperature in individual rooms being used, using occupancy sensors and historical occupancy data. It can also be paired with existing connected cooling units to control temperature. Its systems can be controlled via smartphones, tablets, and smartwatches.
- Mar 2026Series B—
- Dec 2024Series A—
- Sep 2022Series A$7.6M
- Feb 2022Seed$108.5K
#12
Series A · San Francisco, California · founded 2019 · 38 employees$16.5Mraised▾
Provider of solutions to manage PPA. It provides personalized power purchase agreements (PPAs) across your entire portfolio.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Sustainability Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Climate Adaptation is moving in the United States
A read on the academic research around Climate Adaptation — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 1,953 United States-affiliated papers.
- Columbia University52
- University of North Carolina at Chapel Hill43
- Arizona State University42
- Texas A&M University42
- Purdue University West Lafayette35
- Flood myth4→56
- Climate change6→47
- Flooding (psychology)2→23
- Climate resilience1→16
- Flood mitigation2→14
- Flood myth50→178
- Climate change35→155
- Flooding (psychology)18→97
- Resilience (materials science)10→84
- Psychological resilience12→55
- Climate change71→449
- Resilience (materials science)17→139
- Flood myth36→158
- Psychological resilience13→115
- Climate resilience14→92
Where climate adaptation is researched across United States
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Who's filing climate adaptation patents in the United States
United States climate adaptation patent filing is cooling — 28 filings from 19 assignees (2016–2025), led by ILC Dover, Garcia Rogerio, Serralta Denset; annual filings 6→1.
- ILC Dover20
- Garcia Rogerio4
- Serralta Denset4
- Zesty AI2
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