Best Environment Tech Companies in San Jose, United States
The 50 best Environment Tech companies in San Jose, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: SoloPower.
Our analysis of 83 Environment Tech companies
$16.0b in tracked funding; 90% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Environment Tech companies in San Jose
| # | Company | Disclosed funding | Last round | Employees | Founder | Stage | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | Aeon Matrix Provider of IoT-based smart irrigation solutions for farmers and home growers | — | — | — | Joseph Tsai Founder & CEO | Unfunded | — | — |
| 2 | Air to Water Technologies Developer of air to water generation systems | — | — | — | Jeff Bagley Founder & VP | Deadpooled | — | — |
| 3 | Alchemy Unlimited Provider of an energy management solution for commercial spaces | — | — | — | Jeff Brickell CEO & President | Deadpooled | — | — |
| 4 | Applied Power Technologies Provider of energy monitoring systems for commercial buildings | — | — | 12 12 → 23 (+92%) | Andrew Taylor CEO | Unfunded | — | 1 launch |
| 5 | Argyle Earth Developer of a system converting low-grade waste heat into electricity | — | — | — | Kristina Mcmillan Co-Founder | Funding Raised | 6 patents Geothermal heat‑engine and partial‑state condenser technologies for power generation | — |
| 6 | Artveoli Air panels that combine microfluidics and algae to convert carbon dioxide to oxygen | — | — | 2 | — | Funding Raised | 8 patents Microfluidic chip platforms for air‑quality monitoring and pollutant removal | — |
| 7 | Cyber Switching Solutions Energy management products and systems, EV charging master controller | — | — | — | Chuck Reynolds CEO | Deadpooled | 42 patents Smart EV charging infrastructure and cabinet-level power controller with asset management | — |
| 8 | Enventix Technology developer of conversion systems for wastes and biomass | — | — | 3 | Monem Alyaser CEO | Unfunded | 10 patents Integrated hydrogenation and pyrolysis reactors for chemical synthesis and processing | — |
Top 12 Environment Tech companies in San Jose
#1
Series D · San Jose, California · founded 2018 · 75 employees$190Mraised▾
Developer of thermal management solutions for data centers and electronic devices. The company offers direct-to-chip liquid cooling and solid-state active air cooling products. These cooling solutions are applicable to consumer devices, industrial embedded systems, and data centers. The company's products aim to improve performance and enable compact designs.
- Mar 2026Series D$143M
- May 2024Series C$90M
- Dec 2022Series B$100M
- 2018Series A—
#2
Acquired · San Jose, California · founded 2016 · 62 employees$31Mraised▾
Manufacturers of solar modules. It provides crystalline silicon-based solar solutions which address deployments such as on metal roofs, auxiliary power for transportation, flush-mounted residential solar, and military applications. It also provides solutions for interconnect system that enables them to extract more power compared to standard solar panels and also improve the reliability performance, and ruggedness of the solar panels.
- Dec 2025Series B$16.1M
- Oct 2024Series B$31M
#3
Series E · San Jose, California · founded 2005 · 24 employees$272.9Mraised▾
Provider of flexible thin-film photovoltaic cells. It offers high-efficiency, low-cost Copper-Indium-Gallium-Selenide-based devices to enable solar electricity generation at a cost that is competitive with traditional methods.
- Oct 2012Series E$12M
- Jun 2012Series E$10.8M
- May 2012Series E$7.1M
- Dec 2011Series E$20.1M
#4
Series B · San Jose, California · founded 2019 · 54 employees$25Mraised▾
Manufacturer of home energy management and battery storage solutions. The company provides systems designed for uninterrupted power during blackouts or peak demand. The systems manage solar, battery, generator, electric vehicle, and grid power. The company's app allows control, real-time monitoring, and analysis of energy status.
- Aug 2023Series B$25M
- Aug 2022Seed—
- Seed—
#5
Seed · San Jose, California · founded 2016 · 48 employees$396.6Kraised▾
Provider of waterless liquid cooling solutions for artificial intelligence and computing. The company’s technology removes heat directly at the processor through a closed-loop system. This approach eliminates water use and reduces energy consumption. It helps data centers scale performance and advance sustainability across digital infrastructure. The company offers end-of-row cooling units that deliver centralized, multi-rack cooling with rack-level monitoring.
- Feb 2025Seed—
- Jun 2024Seed—
- Jan 2024Grant (prize money)$396.6K
- Sep 2023Seed—
#6
Series A · San Jose, California · founded 2020 · 27 employees$20Mraised▾
Cloud-based invoicing and billing solution for businesses
- Jan 2023Series A$15M
- Seed$5M
#7
Deadpooled · San Jose, California · founded 2006 · 5 employees$90Mraised▾
Stion manufactures thin-film, solar PV modules having high-efficiency. The company not only provides solutions and technology for the cost reduction of PV modules but the whole solar system.
- Jul 2017Grant (prize money)$956.6K
- Dec 2012Series D$25M
- Jun 2010Series C$50M
- Jun 2007Series B$15M
#8
Acquired · San Jose, California · founded 2014 · 49 employees$13.8Mraised▾
A smart apartment management solution for managers and residents. The company has developed a hub which sits in the home and communicates with home automation devices like lighting, locks and thermostats. The property manager can manage their vacant apartments and give access to new tenants using the platform. Tenants can use the platform to control home devices. It works on a subscription-based model with a upfront cost for each smart device.
- Feb 2021Series A$5.6M
- Mar 2020Series A$4.8M
- Dec 2018Series A$2.3M
- Aug 2018Series A—
#9
Acquired · San Jose, California · founded 2003 · 15 employees$32.6Mraised▾
Provider of solutions for renewable energy monitoring. It is an independent provider of critical monitoring and reporting services for the renewable energy industry. The company's solutions are utilized by solar power producers, financiers, system integrators, OEMs, and growing a growing number of wind power companies. Fat Spaniel solutions help optimize energy output, reduce operations and maintenance costs, contain risk, and increase return on investment for renewable energy power plant projects.
- Dec 2009Conventional Debt$4.6M
- Jan 2008Series B$18M
- Nov 2007Series A$3M
- Oct 2006Series A$7M
#10
Acqui-Hired · San Jose, California · founded 2004 · 30 employees$23Mraised▾
LED Engin develops, manufactures, and sells advanced LED emitters, optics and light engines to create uncompromised lighting experiences for a wide range of entertainment, architectural, general lighting and specialty applications. It offers 1-, 4-, 9-, 12- and 24-die emitter products with highest efficacies in smallest packages with color offerings of red, deep red, far red, green, blue, amber, dental blue and white in the visible range and ultra violet (365nm and 400nm) and infrared (850nm) in the non-visible range. Their LuxiTune is a single-emitter light engine capable of true blackbody dimming from 3000K to 1800K with easy-to-use 0-10V dimmers.
- Apr 2012Series E$12M
- Jul 2010Series D—
- Oct 2007Series C$11M
#11
Series A · San Jose, California · founded 2020 · 7 employees$5.2Mraised▾
Developer of an energy demand management system intended for demand management, energy management, and building automation of commercial buildings. The company's systems manage demand by monitoring incoming power, calculating demand, and managing heating, ventilation, air conditioning, refrigeration, water heaters, and other controllable loads, enabling companies to realize utility bill savings.
- May 2022Series A$5.2M
#12
Acqui-Hired · San Jose, California · founded 2006 · 23 employees$21.7Mraised▾
Xangati provides workload performance management dashboards for cloud and virtual desktop environments and data centers. Its solutions proactively track the health of key IT metrics that impact the performance of applications and users, accurately diagnose the cause of any performance bottleneck and recommend remedial action when a bottleneck is discovered. Xangati provides a rapid problem identification (RPI) system which can be used by IT organizations when first responding to end-user, application and network performance and availability issues.
- Nov 2013Series C$11M
- Sep 2007Series B$10.7M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Environment Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Environmental Monitoring is moving in the United States
A read on the academic research around Environmental Monitoring — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 3,039 United States-affiliated papers.
- United States Geological Survey157
- Cary Institute of Ecosystem Studies112
- Environmental Protection Agency84
- National Research Council79
- National Park Service76
- Software deployment2→31
- Pollution3→27
- Air quality index1→25
- Water quality10→34
- Air pollution3→25
- Air quality index14→60
- Air pollution8→51
- Pollutant4→32
- Sampling (signal processing)14→42
- Water quality23→48
- Human health1→32
- Pollution4→33
- Air quality index6→31
- Pollutant6→28
- Biodiversity1→22
Where environmental monitoring 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 environmental monitoring patents in the United States
United States environmental monitoring patent filing is accelerating — 450 filings from 343 assignees (2016–2025), led by LEEO, Valencell, United Parcel Service; annual filings 47→49.
- LEEO41
- Valencell25
- United Parcel Service21
- Honeywell INT20
- Apple18
- Venturedyne18
- Pillar TECH17
- IND Scient16
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.