Best Sustainability Tech Companies in Delaware, United States
The 53 best Sustainability Tech companies in Delaware, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Resideo.
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 Delaware
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Resideo Provider of smart home solutions for security, air, water, and energy | $500M | 27 mo ago | Public | Jay Geldmacher CEO & President | 2018 | Cart FunctionalityApple iCloud MailMicrosoft 365+28 | 71 patents Smart HVAC and home security IoT devices with AI control, low-power networking, and access authentication | 1 award |
| 2 | Viridi Provider of renewable natural gas platform to manage energy | $320M | 49 mo ago | Series D | Andrew Kelleher CEO | 2022 | GSAPApache HTTP ServerCloudflare+8 | — | — |
| 3 | Ardent Technology solution for carbon capture 32Funding top 18%Moat top 38%Patents top 45%Talent bottom 49% All 8 signals ▾Fundingtop 18% Moattop 38% Patentstop 45% Talentbottom 49% Techbottom 47% Innovationbottom 46% Globalbottom 40% Marketbottom 29% Funding: Raised $74.3M across 66 rounds · 66 rounds over 22 yrs (3.0/yr) Moat: Editorial + unicorn rating 4/10 · IP moat: 22 patents rank vs industry peers · Fliar Intelligence Index 32/100 | $74M | 7 mo ago | Series B | Erica Nemser CEO | 1993 | Webflow EcommerceWebflowcore-js+13 | 22 patents Patents concentrated in chemistry & materials | — |
| 4 | Graphyte Developer of durable and scalable carbon dioxide removal technology | $38M | 23 mo ago | Series A | Barclay Rogers Co-Founder & Chief Executive Officer | 2023 | WixSentryEnvoy+17 | 8 patents Biomass carbon sequestration processing and inline spectral monitoring technologies | — |
| 5 | AirJoule Technologies Developer of sorption technologies for water production, recovery, cooling, and control | $15M | 14 mo ago | Public | Abe Mammen Co-Founder | 2018 | WordPress Block EditorWordPressApple iCloud Mail+21 | — | — |
| 6 | Vema Developer of engineered mineral hydrogen production technology | $13M | 17 mo ago | Seed | Florian Osselin Co-Founder & CSO | 2024 | — | 2 patents Retractable-tip female urination aids for personal hygiene | 1 award |
| 7 | Uvax Bio Developer of therapeutic vaccines to treat viral infections | $11M | 70 mo ago | Series B | Jiang Zhu Co-Founder and Interim Chief Scientific Officer | 2018 | — | — | — |
| 8 | 639 Solar Data Centers + Cloud Provider of energy management solutions for data centers 42Funding top 36%Talent bottom 45%Global bottom 25% All 3 signals ▾Fundingtop 36% Talentbottom 45% Globalbottom 25% Funding: Raised $10.1M across 3 rounds · 3 rounds over 2 yrs (1.5/yr) Talent: 1 named leader on record rank vs industry peers · Fliar Intelligence Index 42/100 | $10M | 8 mo ago | Series B | Tim Shaler Chief Executive Officer | 2021 | — | — | — |
| 9 | RiKarbon Developer of renewable oils and ingredients from non-conventional carbon feedstocks | $8M | 32 mo ago | Funding Raised | — | 2018 | — | 9 patents Upcycling post-consumer PET into bio-based oils and polymers via depolymerization. | — |
| 10 | Virion Therapeutics Developing T cell immunotherapies for cancer and chronic infectious diseases | $5M | 61 mo ago | Series A | Hildegund Ertl Scientific founder | 2018 | WordPressSkolengoMySQL+24 | — | 1 launch |
| 11 | Carbon Reform Provider of carbon capture and building decarbonization solutions. | $3M | 32 mo ago | Seed | Jo Norris Co-Founder | 2020 | — | — | — |
| 12 | Terum Online platform offering solutions for carbon footprint awareness | $500K | 44 mo ago | Seed | — | 2021 | — | — | — |
| 13 | Power Transition Developer of electricity transmission based projects | $324K | 74 mo ago | Seed | — | 2018 | — | — | — |
| 14 | KFOBIX Provider of patented nanocomposite coating that repels water droplets | $275K | 33 mo ago | Seed | Mustafa Isen CEO | 2022 | — | — | — |
| 15 | Microgenesis Provider of smart solutions for fertility & pregnancyhealth monitoring | $250K | 73 mo ago | Seed | Gabriela Gutierrez Founder | 2019 | Wix eCommerceWixSentry+20 | 14 patents Diagnostic and therapeutic assessment of reproductive inflammatory conditions for fertility | — |
| 16 | Lumilant Developer of lighting products focused on energy efficiency and sustainability | $150K | 137 mo ago | Funding Raised | Ahmed Sharkawy Founder & CTO | 2010 | — | 11 patents Photonic integrated circuits for high‑speed optical switching, routing, and filtering | — |
| 17 | Bynry AI-powered smart utility management SaaS platform | $100K | 59 mo ago | Seed | Nilesh Gudhe Founder | 2016 | Radix UITailwind CSSshadcn/ui+14 | — | — |
Top 12 Sustainability Tech companies in Delaware
#1
Series B · New Castle, Delaware · founded 1993 · 20 employees$74.3Mraised▾
Technology solution for carbon capture. It offers scalable membrane solutions to accelerate decarbonization in industries by harnessing membrane technology.
- Nov 2025Series B$10.3M
- Jun 2021Grant (prize money)$250K
- Sep 2019Grant (prize money)$147.7K
- Jul 2019Grant (prize money)$106.5K
#2
Series B · Claymont, Delaware · founded 2021$10.1Mraised▾
Provider of energy management solutions for data centers. It has a design for solar-powered data centers, addressing the global datacenter energy shortage and extending uptime.
- Nov 2025Series B$954K
- Jun 2025Series B$300K
- Mar 2024Series B$10.1M
#3
Public · Newark, Delaware · founded 2018$15Mraised▾
Developer of sorption technologies for water production, recovery, cooling, and control. The company provides solutions for harvesting atmospheric moisture to produce clean water. It also offers systems for water recovery from industrial processes. Its cooling systems improve efficiency and reduce energy costs. Additionally, it provides moisture control solutions to prevent corrosion and improve quality in manufacturing.
- Apr 2025Post IPO$15M
#4
Public · Wilmington, Delaware · founded 2018 · 14000 employees$500Mraised▾
Provider of smart home solutions for security, air, water, and energy. The company offers products such as thermostats, security systems, leak detectors, and air purifiers. These products provide home efficiencies, security, life safety, and promote well-being. The company also offers mobile applications to control, monitor, and support connected home products.
- Apr 2024Post IPO$500M
#5
Seed · Wilmington, Delaware · founded 2024$13Mraised▾
Developer of engineered mineral hydrogen production technology. This technology stimulates naturally occurring subsurface reactions to create hydrogen in a controlled and scalable manner. The process utilizes catalysts and optimized field placement to achieve cost-effective hydrogen production. It offers a sustainable and environmentally friendly alternative to traditional hydrogen production methods. The technology is designed for predictable and adaptable hydrogen flows to meet market demands.
- Feb 2025Seed$13M
#6
Series A · Dover, Delaware · founded 2023 · 6 employees$37.8Mraised▾
Developer of durable and scalable carbon dioxide removal technology. It uses readily available biomass, such as agricultural and timber residues, to create dense carbon blocks. These blocks are protected by an impermeable barrier and stored underground, preventing decomposition and ensuring long-term carbon sequestration. The process is energy-efficient and leverages natures carbon capture mechanisms, offering a cost-effective solution for large-scale carbon removal. The technology is designed for immediate scalability and provides a pathway for significant carbon dioxide removal.
- Jul 2024Series A$37.8M
#7
Series D · Wilmington, Delaware · founded 2022 · 14 employees$320Mraised▾
Provider of renewable natural gas platform to manage energy. It offers a full service renewable natural gas platform to build, own and operate RNG assets with landfill, dairy, and food waste feedstocks. It captures and converts natural biogas to reduce carbon emission and manage air quality. It assists organizations in strategy development, financing, operations management, and more.
- Jun 2022Series D$320M
#8
Funding Raised · Newark, Delaware · founded 2018 · 7 employees$7.6Mraised▾
Developer of renewable oils and ingredients from non-conventional carbon feedstocks. The company creates bio-based oils for environmentally-regulated applications and safer skin care product formulations. It utilizes plant matters and non-conventional feedstock to produce renewable ingredients. The company’s synthetic strategy focuses on designer renewable oils with durability and stability.
- Oct 2023Grant (prize money)—
- Jul 2023Grant (prize money)$200K
- Jul 2021Grant (prize money)$1.1M
- Feb 2021Grant (prize money)$2.5M
#9
Seed · Wilmington, Delaware · founded 2020 · 7 employees$3Mraised▾
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- Nov 2023Conventional Debt$5.5M
- Nov 2022Seed$3M
#10
Series B · Newark, Delaware · founded 2018 · 16 employees$11Mraised▾
Developer of therapeutic vaccines to treat viral infections. The company employs protein nanoparticle (1c-SApNP) platform technology to develop and commercialize prophylactic vaccines for infectious diseases. The company has developed a product pipeline for HIV, RSV, PIV1-5, Ebola, Lassa, and coronaviruses.
- Sep 2020Series B$11M
#11
Series A · Newark, Delaware · founded 2018 · 7 employees$5.2Mraised▾
Developing T cell immunotherapies for cancer and chronic infectious diseases. The company is a clinical-stage biopharmaceutical company focused on revolutionizing immunotherapy treatment. They develop novel, adaptable, and accessible CD8+ T cell-based technologies. Their platform combines innovative and established approaches to elicit a superior CD8+ T cell response. Novel genetically encoded checkpoint modifiers are delivered alongside optimized target-specific antigens via an immunogenic and adaptable viral vector platform that promotes potent, prolonged, and broad CD8+ T cell responses. The company's technology has potential applications across a range of cancers and chronic infectious diseases, with a lead product under investigation as a potential functional cure for the treatment of chronic hepatitis B virus (HBV). They utilize a VIACT™ platform, combining genetically encoded checkpoint modifiers with intelligently selected and optimized target antigens, inserted into heterologous chimpanzee adenoviral vectors.
- Jun 2021Conventional Debt$3.1M
- Nov 2018Series A$5.2M
#12
Seed · Dover, Delaware · founded 2022$275Kraised▾
Provider of patented nanocomposite coating that repels water droplets. It provides superhydrophobic solutions for the blades of the turbines to not hold water and not freeze.
- Sep 2023Seed$275K
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
- Yodock GUY1
- Mckee TONY RAY1
- Ballard Tristan1
- Cooper Matthew1
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.