Best Sustainability Tech Companies in Arizona, United States
The 102 best Sustainability Tech companies in Arizona, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Lessen.
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 Arizona
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Lessen 🦄 Provider of property maintenance and improvement solutions for commercial and residential | $705M | 41 mo ago | 540 540 → 1,037 (+92%) | Jay McKee Founder & CEO | WebflowApple iCloud MailSwiper+21 | — | 2 internships · 1 launch |
| 2 | Meritage Homes Real estate developer of residential properties | $500M | 99 mo ago | 1,838 1,838 → 2,542 (+38%) | — | Apple iCloud MailSalesforceSalesforce Service Cloud+34 | — | 1 award |
| 3 | Accelerate Diagnostics Developer of diagnostic devices and test kits for the antibiotic resistant infections | $366M | 63 mo ago | 197 | — | Cart FunctionalityWordPressMySQL+26 | 90 patents Lens-free holographic imaging for label‑free cellular/microbial detection and susceptibility testing | — |
| 4 | SOURCE Manufacturer of solar powered systems that extract water from air | $239M | 15 mo ago | 109 | Shikha Kapur Co-Founder | ShopifyTailwind CSSShopPad Infinite Options+25 | 24 patents Media handling and sensor-driven print optimization hardware for industrial printing systems | — |
| 5 | Persefoni Provider of carbon accounting and sustainability management platform for businesses 55Funding top 24%Growth top 35%Moat top 35%Product top 36% All 13 signals ▾Fundingtop 24% Growthtop 35% Moattop 35% Producttop 36% Talenttop 38% Techtop 40% Globaltop 42% AItop 45% Patentstop 49% Marketbottom 49% Innovationbottom 42% Newsbottom 22% Fin. healthbottom 17% Funding: Raised $171M across 6 rounds · 6 rounds over 6 yrs (1.0/yr) Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 55/100 | $171M | 1 mo ago | 295 | Jason Offerman President | WebflowStripeAtlassian Statuspage+29 | 3 patents Enterprise carbon accounting and portfolio management software solutions | 1 launch · 1 award |
| 6 | Climatec Provider of energy efficiency, building automation, and infrastructure modernization solutions | $69M | 161 mo ago | 18 | Jack Kucera CEO | WebflowCloudflare TurnstilereCAPTCHA+7 | — | — |
| 7 | Solestial Manufacturer of silicon photovoltaic products designed for space-based solar power | $26M | 13 mo ago | 26 | Stan Herasimenka Co-Founder & CTO | WordPress Block EditorWordPressApple iCloud Mail+29 | — | 1 job opening |
| 8 | First Solar Provider of cadmium telluride-based flexible solar modules | $22M | 13 mo ago | 6,700 6,700 → 6,680 (+0%) | Mike Ahearn Founder | SitecoreApple iCloud MailMicrosoft 365+19 | 1,474 patents Patents concentrated in electrical & electronics | — |
| 9 | Creative Medical Technologies Stem-cell based therapeutics for male and female reproductive health | $19M | 49 mo ago | 4 | — | Webflow EcommerceWebflowYouTube+10 | — | — |
| 10 | Calimmune Developer of autologous cell therapies to enhance immune response for infectious diseases | $16M | 132 mo ago | 23 | — | — | 72 patents Gene therapy vector platforms for AAV/lentiviral delivery targeting hemoglobinopathies and HIV. | — |
| 11 | Burge Environmental Real-time microbial sensor technology for environmental and industrial monitoring solutions | $12M | 71 mo ago | — | David Hoffman Co-Founder | — | — | — |
| 12 | Valley Fever Solutions Developing innovative antifungal solutions to conquer Valley Fever and fungal diseases | $12M | 144 mo ago | — | David Larwood Co-Founder & CEO | — | — | — |
| 13 | Phoenix Group Metals Provider of catalytic converter recycling, toll refining, and precious metal assaying | $10M | 70 mo ago | 30 | Jay Robie Owner | Wix eCommerceWixSentry+14 | — | — |
| 14 | FacilitySource Online outsourced facility maintenance and management solutions | $10M | 164 mo ago | 600 | — | — | — | — |
| 15 | Small Box Energy Cloud-based energy management solutions optimizing facility operations for restaurants, retail, and more | $6M | 112 mo ago | 7 | — | — | — | — |
| 16 | PowerOneData International Advanced metering infrastructure and street lighting management systems | $5M | 164 mo ago | 19 | Ernest Villicana Founder | — | 2 patents Smart electricity metering and automated utility meter reading systems | — |
| 17 | Notation Labs Provider of smart water conservation products | $4M | 18 mo ago | — | Michael Stebbins Co-Founder & CEO | — | 4 patents Home water quality monitoring and high‑sensitivity, non‑obstructive flow sensing devices | — |
| 18 | NanoFlex Power Developer of organic solar PV modules | $4M | 53 mo ago | 7 | Dean Ledger CEO & Director | — | — | — |
| 19 | Yaso Therapeutics Innovative contraceptive and antiviral solutions for global family planning and health | $2M | 154 mo ago | — | Mary Weitzel Co-Founder & CEO | — | — | — |
| 20 | Arizona Housing Developer of affordable housing | $1M | 145 mo ago | 11 11 → 14 (+27%) | — | WeeblyMySQLPHP+16 | — | 1 partnership |
| 21 | OXbyEL Technologies Technology solution for water treatment | $375K | 10 mo ago | 5 | Preston Montalvo Co-Founder | — | — | — |
| 22 | EarthEn Developer of thermo-mechanical energy storage solutions | $275K | 19 mo ago | 9 | Karthi Chakravarty Co-Founder | — | — | — |
| 23 | Delta Thermal AI and cloud-driven platform offering thermal imaging solutions for monitoring electrical substations | $150K | 50 mo ago | 4 | Sonny Cray Co-Founder | — | 12 patents Thermal imaging systems for vehicle wheel monitoring and high‑speed object detection | — |
| 24 | Attometrics Single molecule diagnostics for infectious diseases | $149K | 120 mo ago | — | Wayne Frasch CEO | — | — | — |
| 25 | nVector Developer of therapeutics for the central nervous system | $125K | 47 mo ago | 6 | Gerry Shaw Co-Founder | — | — | — |
| 26 | Newtown CDC Provider of community development programs, homebuyer resources, and financial assistance | $112K | 169 mo ago | — | — | Site Search 360Amazon Web ServicesApache HTTP Server+13 | — | — |
| 27 | PoG Technologies Device to monitor AC filters | $100K | 119 mo ago | — | Mike Mayer Co-Founder | — | — | — |
Top 12 Sustainability Tech companies in Arizona
#1
Series C · Mesa, Arizona · founded 2020 · 295 employees$170.7Mraised▾
Provider of carbon accounting and sustainability management platform for businesses. The platform offers tools for carbon footprint measurement, analytics, and sustainability reporting. It supports regulatory emissions reporting, stakeholder emissions reporting, and decarbonization management. The platform also provides features for scope 3 supplier engagement and financed emissions accounting. It includes AI-powered capabilities for anomaly detection and emission factor mapping.
- Apr 2026Series C$4.3M
- Apr 2025Series C$23M
- Aug 2023Series C$52.7M
- Oct 2021Series B$101M
#2
Series D · Scottsdale, Arizona · founded 2015 · 109 employees$238.9Mraised▾
Manufacturer of solar powered systems that extract water from air. These systems utilize atmospheric water vapor to produce liquid water. The technology employs solar energy to convert vapor into a liquid state, which is then mineralized for consumption. The resulting water is stored within the unit until it is dispensed for use. These systems are designed for residential, community, and commercial applications.
- Feb 2025Series D$19.3M
- Jul 2022Series D$130M
- Apr 2022Series D$108.9M
- Jun 2020Series C$50M
#3
Acquired · Tempe, Arizona · founded 2013 · 26 employees$26.2Mraised▾
Manufacturer of silicon photovoltaic products designed for space-based solar power. These products offer radiation-hardened solutions engineered for optimal performance in space environments. The company provides flexible solar power modules that can be integrated with various solar array deployment systems. Integrated solar power modules are also available for spacecraft installation.
- May 2025Series A$17M
- Sep 2024Series A$15.1M
- Oct 2022Seed$11.2M
- Aug 2021Grant (prize money)$999.8K
#4
Public · Tempe, Arizona · founded 1999 · 6700 employees$21.7Mraised▾
Provider of cadmium telluride-based flexible solar modules. It develops solar modules with advanced semiconductor technology and provides comprehensive PV system solutions. It also manages the comprehensive collection and recycling program for solar modules.
- May 2025Grant (prize money)$8M
- Apr 2025Grant (prize money)$5.2M
- Jan 2025Grant (prize money)$8M
- Jan 2018Post IPO$488K
#5
Lessen 🦄Series C · Scottsdale, Arizona · founded 2019 · 540 employees$705Mraised▾
Provider of property maintenance and improvement solutions for commercial and residential. The company offers services including repairs, maintenance, capital projects, and make-readies. It focuses on simplifying complexities and delivering value through technology and a vendor network. The company serves commercial occupiers, owners, residential owners, and managers.
- Jan 2023Conventional Debt—
- Jan 2023Series C$500M
- Nov 2021Series B$170M
- Jun 2021Series A$35M
#6
Series A · Scottsdale, Arizona · founded 2020$4.5Mraised▾
Provider of smart water conservation products. It uses AI and machine learning algorithms for its products that help to educate consumers on water conservation in their everyday lives.
- Dec 2024Conventional Debt$2M
- Sep 2023Series A$2.5M
- Aug 2022Seed$2M
#7
Public · Tucson, Arizona · founded 1987 · 197 employees$366.3Mraised▾
Developer of diagnostic devices and test kits for the antibiotic resistant infections. The company's products include Accelerate Pheno system and Accelerate PhenoTest BC kit combine several technologies aimed at reducing the time clinicians must wait to determine the most optimal antibiotic therapy for deadly infections.
- Mar 2021Post IPO$32M
- Aug 2019Post IPO$1000K
- Mar 2018Post IPO$171.5M
- May 2017Post IPO$79.3M
#8
Seed · Phoenix, Arizona · founded 2018 · 5 employees$374.9Kraised▾
Technology solution for water treatment. It uses electro-oxidative technology for energy-efficient and scalable destruction of per- and polyfluoroalkyl substances (PFAS) in water and wastewater treatment.
- Aug 2025Seed$100K
- Dec 2021Grant (prize money)$274.9K
#9
Public · Scottsdale, Arizona · founded 1985 · 1838 employees$500Mraised▾
Real estate developer of residential properties
- Mar 2018Post IPO$200M
- Mar 2018Conventional Debt$300M
#10
Public · Phoenix, Arizona · founded 2011 · 4 employees$18.7Mraised▾
Stem-cell based therapeutics for male and female reproductive health. Its lead product Caverstem is an autologous stem cell-based therapeutic for the treatment of erectile dysfunction. In addition, it also stem cell treatments for male infertility and female sexual dysfunction,
- Apr 2022Post IPO$17M
- Sep 2018Post IPO$509K
- Mar 2018Post IPO$48K
- Mar 2018Post IPO$115K
#11
Seed · Phoenix, Arizona · founded 2021 · 9 employees$274.7Kraised▾
Developer of thermo-mechanical energy storage solutions. It offers carbon-negative and climate-positive energy storage solutions through real-time data analysis. It facilitates communication between hardware devices and allows a shift to decarbonization and a renewable grid. It focuses on decarbonizing energy processes and enabling electrification by offering a storage solution that complements renewables like solar and wind.
- Nov 2024Grant (prize money)—
- Sep 2024Seed—
- Jul 2024Grant (prize money)$274.7K
#12
Acquired · Phoenix, Arizona · founded 1975 · 18 employees$69.2Mraised▾
Provider of energy efficiency, building automation, and infrastructure modernization solutions. The company offers services such as HVAC modernization, indoor air quality improvements, and smart city technology implementation. Expertise extends to renewable energy, energy storage, electrification, and water conservation. The company delivers design/build solutions and funding plans for infrastructure upgrades.
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 Arizona is moving
A read on the academic research around Climate Adaptation in Arizona — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 67 papers.
Arizona's universities—led by ASU, U of A, and NAU—predominantly research flood risk, agricultural climate impacts, and disaster resilience with a cautious, concern-dominated tone (47 concern vs. 2 breakthrough).
- Arizona State University42
- University of Arizona18
- Northern Arizona University5
- Arizona Youth Partnership2
- Arizona Research Center1
- Matching (statistics)1
- Germplasm1
- Climate change1
- Vegetation (pathology)1
- Range (aeronautics)1
- Climate change7
- Environmental resource management4
- Resilience (materials science)4
- Psychological resilience3
- Vulnerability (computing)2
- Climate change6→17
- Resilience (materials science)1→7
- Adaptation (eye)1→4
- Vulnerability (computing)4→6
- Climate resilience1→3
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.