Best Sustainability Tech Companies in Barcelona, Spain
The 82 best Sustainability Tech companies in Barcelona, Spain in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Submer.
Our analysis of 293 Sustainability Tech companies
$38.4b in tracked funding; 83% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Sustainability Tech companies in Barcelona
| # | Company | Disclosed funding | Last round | Stage | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Submer Manufacturer of liquid cooling systems for high density server hardware | $90M | 18 mo ago | Series C | 108 | Daniel Pope Co-Founder & CTO | WordPressMySQLPHP+23 | 3 patents Liquid cooling solutions for high‑performance computing hardware | 1 launch |
| 2 | DeepUll Developer of diagnostic technology for rapid identification of sepsis-causing pathogens | $35M | 13 mo ago | Series C | 26 | Rafel Gibert Co-Founder | PHPNginxCloudflare+11 | — | — |
| 3 | STAT-Dx Point of care system for syndromic testing of respiratory & gastrointestinal pathogens | $34M | 120 mo ago | Acquired | 30 | Jordi Carrera Founder & CEO | — | — | — |
| 4 | SOM Biotech Developer of platform for screening compounds to treat rare diseases | $29M | 30 mo ago | Series B | 15 | Raul Insa Founder & CEO | — | 117 patents Pharmaceutical compounds and formulations for treating dystrophinopathies, movement disorders, and PKU | — |
| 5 | ABAC Therapeutics Early stage biopharma developing precision drugs for MDR bacterial infections | $20M | 41 mo ago | Acquired | 8 | Domingo Gargallo-Viola Co-Founder & CSO | — | 31 patents Novel small‑molecule antibiotics for Gram‑positive bacterial infections | — |
| 6 | Aelix Therapeutics Developer of therapies for treating HIV | $13M | 77 mo ago | Series A | 10 | Christian Brander Co-Founder | — | 25 patents TLR7 agonist adjuvant formulations enhancing HIV vaccine immunogenicity | — |
| 7 | WtE-As Provider of solutions to convert waste into fuel | $12M | 4 mo ago | Series B | 5 | Andres Ponce Founder & CEO | WordPressMySQLPHP+16 | — | — |
| 8 | Delfos Software technology for monitoring renewable energy products | $8M | 3 mo ago | Seed | — | Samuel Lima Co-Founder & CTO | WebflowAmazon Web ServicesGSAP+22 | — | 1 launch |
| 9 | Oxolife Developer of a first-in-class oral drug improving embryo implantation | $7M | 3 mo ago | Series A | 10 | Ignasi Almazan Co-Founder | WordPress Block EditorWordPressMySQL+18 | 80 patents Tungsten(VI) salt hydrates for fertility therapeutics and their manufacturing processes | — |
| 10 | EQTEC | $6M | 28 mo ago | Public | 30 | David Palumbo CEO | WordPressMySQLPHP+19 | — | — |
| 11 | Enertika Provider of website hosting and domain name services. This company offers website hosting plans designed for… | $6M | 108 mo ago | Series A | 86 | — | — | — | — |
| 12 | Sadako Technologies Provider of an AI-based waste sorting robotic solution | $5M | 88 mo ago | Funding Raised | 15 | — | — | — | — |
| 13 | Wattwin Provider of project management software for renewable energy businesses | $3M | 16 mo ago | Series A | 85 | Joan Ferrer Co-Founder & CEO | WordPressApple iCloud MailMicrosoft 365+30 | — | — |
| 14 | S&C SaaS-driven energy management solutions for commercial spaces | $3M | 61 mo ago | Funding Raised | — | Narcis Avellana Co-Founder & CEO | — | — | — |
| 15 | Affirma Biotech Developer of drugs against multi-drug resistant bacteria | $2M | 28 mo ago | Seed | 3 | Maribel Berges Chief Executive Officer | — | 6 patents PD‑L1 immune checkpoint inhibitor small‑molecule therapeutics | — |
| 16 | Ledmotive Connected intelligent LED lightning solution | $2M | 86 mo ago | Series A | 6 | Meritxell Molins Co-Founder & CEO | — | — | — |
| 17 | Sens Solutions IoT platform providing real-time air and water monitoring solutions 22Talent top 38%Funding bottom 47%Market bottom 37%Global bottom 36% All 5 signals ▾Talenttop 38% Fundingbottom 47% Marketbottom 37% Globalbottom 36% Techbottom 32% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $1.8M across 2 rounds · 2 rounds over 8 yrs (0.2/yr) rank vs industry peers · Fliar Intelligence Index 22/100 | $2M | 13 mo ago | Seed | — | Marck Collado Co-Founder | — | — | — |
| 18 | Ocean Ecostructures Designs and implements Biodiversity Boosting Systems | $2M | 11 mo ago | Series A | 9 | — | WordPressMySQLPHP+21 | 4 patents Marine aquaculture devices and eco-friendly underwater construction materials | — |
| 19 | HONEXT Manufacturer of non-toxic, recyclable fibreboard, and other building materials | $1M | 62 mo ago | Funding Raised | 16 | Pere Merino CEO | — | — | 1 launch · 3 awards |
| 20 | Dexma Provider of cloud-based energy management and analytics solutions | $1M | 69 mo ago | Acquired | 70 | Guillem Corominas Co-Founder | WordPressMySQLPHP+40 | — | — |
| 21 | Candam Provider of recycling solutions using packaging recognition and fill-level sensor data 48AI top 20%Growth top 35%Talent top 38%Funding top 46% All 8 signals ▾AItop 20% Growthtop 35% Talenttop 38% Fundingtop 46% Techtop 50% Productbottom 45% Globalbottom 38% Marketbottom 23% AI: Classified as an AI company Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 48/100 | $1M | 4 mo ago | Seed | 22 | Miquel Solsona Co-Founder | WordPressMySQLPHP+27 | — | — |
| 22 | Hydromodel Host Groundwater and aquifer data management solution | $806K | 133 mo ago | Seed | — | Mikel Irízar CEO | — | 2 patents Cloud-based execution platforms for numerical simulation models | — |
| 23 | Roomonitor Guest management app for accommodation providers | $766K | 102 mo ago | Seed | 33 | Eduardo Suarez Co-Founder | WordPressBetterDocsZoho+46 | — | — |
| 24 | Inloc Robotics Provider of AI-powered SaaS platform for sewer condition assessment reports | $612K | 82 mo ago | Seed | 7 | Josep Mirats Founder & CTO | WordPressMySQLPHP+16 | — | — |
| 25 | Manglai AI-powered carbon footprint management platform | $539K | 7 mo ago | Seed | — | Andres Cester Co-Founder & CEO | Cart FunctionalityTurbopackEmotion+22 | — | 1 partnership |
| 26 | Societatorganica Provider of sustainable building strategies, consulting, audits, and training services. | $359K | 36 mo ago | Funding Raised | — | — | BootstrapApache HTTP ServerjsDelivr+1 | — | — |
| 27 | Smalle Technologies Provider of real-time fish farm monitoring solutions | $279K | 81 mo ago | Seed | 5 | — | — | — | — |
| 28 | OpenDomo Services Energy management system for homes and industries | $240K | 128 mo ago | Deadpooled | 3 | Elisabet Cuenca Co-Founder & CEO | — | — | — |
| 29 | Wattabit Energy Management Solution for Industries | $160K | 106 mo ago | Funding Raised | 1 | — | WordPressMySQLPHP+22 | — | — |
| 30 | NanoChronia Provider of semiconductor gas sensor systems | $141K | 9 mo ago | Seed | — | Paul Brown Shute Co-Founder | — | — | 1 award |
| 31 | RemAb Therapeutics Discovering and developing first line therapy for preventing nosocomial infections at ICUs | $112K | 84 mo ago | Funding Raised | 8 | Rafael Mañez Co-Founder | — | 14 patents Synthetic carbohydrate antigen mimetics and glycoconjugate therapeutics for blood‑type targeting | — |
| 32 | Ohmvo Provider of thin silicone heating mats | $111K | 72 mo ago | Funding Raised | — | Jose Llaurado CEO | WordPressMySQLPHP+20 | — | — |
Top 12 Sustainability Tech companies in Barcelona
#1
Seed · Barcelona, Catalonia · founded 2016$8.2Mraised▾
Software technology for monitoring renewable energy products. It is a software technology company that specializes in providing AI based monitoring solutions for solar, wind, and hydro power plants. The software enables smart and predictable renewable energy production by predicting failures and optimizing performance.
- Mar 2026Seed$3.5M
- Jan 2024Seed$6.9M
- Apr 2021Seed$905.2K
- Feb 2019Seed$409.6K
#2
Series B · Barcelona, Catalonia · founded 2017 · 5 employees$11.8Mraised▾
Provider of solutions to convert waste into fuel. Its thermochemical conversion technology generates clean energy from waste feedstocks. The process takes place in a bubbling fluidized bed gasifier, where fuel and fluidizing agents react under auto thermal reduction conditions to generate synthesis gas. This gas is then treated by the WtEnergy-AS reforming process to remove all contaminants present in the residue.
- Feb 2026Series B$11.8M
- Dec 2022Series A—
#3
Series A · Barcelona, Catalonia · founded 2013 · 10 employees$7Mraised▾
Developer of a first-in-class oral drug improving embryo implantation. It offers a drug, OXO-001, to increase embryo implantation success and pregnancy rates. It addresses implantation failure or early pregnancy loss, major causes of failure in female fertility treatments. The company is also studying the use of OXO-001 to treat infertility associated with Polycystic ovary syndrome (PCOS).
- Feb 2026Grant (prize money)$3M
- Dec 2022Grant (prize money)$2.5M
- 2020Seed$1.4M
- Jun 2020Series A$5.7M
#4
Series C · Barcelona, Catalonia · founded 2015 · 108 employees$89.5Mraised▾
Manufacturer of liquid cooling systems for high density server hardware. These products facilitate thermal management for computing infrastructure through immersion and direct chip cooling technologies. The hardware supports heat removal from processors to maintain operational stability in data processing environments. The systems are designed to integrate with existing server racks and cooling infrastructure to manage heat output from high performance computing components.
- Dec 2024Conventional Debt$20.9M
- Oct 2024Series C$55.5M
- Jan 2022Series C$34M
- Sep 2020Series A$12M
#5
Series C · Barcelona, Catalonia · founded 2020 · 26 employees$35.5Mraised▾
Developer of diagnostic technology for rapid identification of sepsis-causing pathogens. The company focuses on empowering hospitals with technology to identify pathogens and antibiotic resistance markers directly from blood. The goal is to provide reportable results in about one hour, addressing the critical need for faster diagnosis. The company's technology aims to improve patient outcomes through early and effective treatment.
#6
Seed · Barcelona, Catalonia · founded 2017 · 22 employees$1.2Mraised▾
Provider of recycling solutions using packaging recognition and fill-level sensor data. The company offers recycling bins and rings that identify materials like PET bottles, metal cans, and glass. It combines scanning with acoustic AI detection for accuracy. The company aims to improve packaging recovery and waste collection.
- Feb 2026Seed—
- Oct 2024Seed$1.2M
- Aug 2022Grant (prize money)$613.2K
#7
Seed · Barcelona, Catalonia · founded 2023$538.8Kraised▾
AI-powered carbon footprint management platform. It provides carbon measurement and reduction solution using AI. It is designed for businesses for measuring, reducing, and certifying carbon footprints.
- Nov 2025Seed$1.2M
- Feb 2024Seed$538.8K
#8
Series A · Barcelona, Catalonia · founded 2021 · 9 employees$1.7Mraised▾
Designs and implements Biodiversity Boosting Systems. Combine scientific innovations and technologies to transform marine infrastructures and degraded areas in blue spaces, fostering biodiversity and restoring marine life. The services offered include analysis and dimensioning, system design, monetization tools design, impact measurement, structure construction, tools installation, impact and monetization model, etc.
#9
Series A · Barcelona, Catalonia · founded 2018 · 85 employees$3.1Mraised▾
Provider of project management software for renewable energy businesses. This software streamlines the design, sales, installation, and administrative processes for solar, geothermal, and electric mobility projects. It offers integrated tools for engineering calculations, proposal generation, project scheduling, and client communication. The platform automates tasks, improves efficiency, and provides real-time project tracking. Features include automated quoting, detailed budgeting, and centralized product catalogs. The software facilitates collaboration among engineering, sales, and installation teams, improving overall project management.
- Feb 2025Series A$3.1M
#10
Seed · Barcelona, Catalonia · founded 2015$1.8Mraised▾
IoT platform providing real-time air and water monitoring solutions
- Apr 2025Seed$1.7M
- Nov 2018Grant (prize money)$56.9K
#11
Series B · Barcelona, Catalonia · founded 2009 · 15 employees$28.5Mraised▾
SOM Biotech is developing therapies for rare diseases. The company has developed a proprietary ligand-based in-silico platform for virtual compound screening. The company has developed a drug pipeline that includes SOM0226 for the treatment of TTR amyloidosis (phase II) and SOM3355 for the treatment of Huntington's disease (phase II). The other products in the pipeline include compounds for the treatments for cystic fibrosis, glioblastoma, and Alzheimer's disease.
- Dec 2023Series B$18.5M
- Mar 2019Series A$7.9M
- Jan 2017Seed$2.1M
#12
Seed · Barcelona, Catalonia · founded 2023$140.9Kraised▾
Provider of semiconductor gas sensor systems. It designs miniaturized metal oxide semiconductor (MOS) gas sensor systems to detect and monitor dangerous gases for a green carbon-free society.
- Sep 2025Seed$140.9K
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 in Barcelona is moving
A read on the academic research around Climate Adaptation in Barcelona — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 41 papers.
- Barcelona Supercomputing Center15
- Universitat de Barcelona10
- Universitat Autònoma de Barcelona9
- Barcelona Institute for Global Health4
- Transports Metropolitans de Barcelona3
- Climate change4
- Climate risk2
- Metropolitan area2
- Resilience (materials science)2
- Climate model2
- Climate change8
- Climate resilience4
- Adaptation (eye)3
- Resilience (materials science)2
- Metropolitan area2
- Climate change3→9
- Climate risk1→3
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.