Radar · Environment in Houston
Best Environment Companies in Houston, United States
The 172 best Environment companies in Houston, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Sunnova.
By Riya SenguptaFinancials
172companies tracked
$4.1Bdisclosed funding
0unicorns
38have raised
FLIAR INTELLIGENCE · ENVIRONMENT × HOUSTON
Our analysis of 90 Environment companies
$38.2b in tracked funding; 89% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
90companies analysed
89%cloud-native stacks
2025funding peak (by rounds)
3unicorns
2015median founding year
652kcombined LinkedIn audience
83%of audience held by top 3
2companies hiring publicly (12 mo)
Ranked: Best Environment companies in Houston
| # | Company | Disclosed funding | Last round | Employees | Founder | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|
| 1 | Sunnova A residential solar and energy storage provider 72Tech top 21%Product top 22%Funding top 23%Market top 35% All 11 signals ▾Techtop 21% Producttop 22% Fundingtop 23% Markettop 35% Growthtop 37% Moattop 39% Fin. healthtop 45% Newstop 49% Talentbottom 49% Globalbottom 43% Customersbottom 35% Tech: 76 technologies across 5/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 Product: 2 published apps (81.2k installs) · Company stage: Public rank vs industry peers · Fliar Intelligence Index 72/100 | $1.5B | 61 mo ago | 644 | John Berger Founder & CEO | — | — |
| 2 | WaterBridge Provider of waste disposal and recycling services | $1.1B | 83 mo ago | 124 | Stephen Johnson Founder | — | — |
| 3 | Solaris Provider of water management services | $350M | 83 mo ago | — | William Zartler Founder & CEO | 4 patents Patents concentrated in construction | — |
| 4 | Horizon Wind Energy Wind farm developer 48Funding top 42%Market top 47%Talent bottom 45%Global bottom 29% All 4 signals ▾Fundingtop 42% Markettop 47% Talentbottom 45% Globalbottom 29% Funding: Raised $318M across 2 rounds · 2 rounds over 17 yrs (0.1/yr) Market: 150 employees (top 36% of Energy) rank vs industry peers · Fliar Intelligence Index 48/100 | $318M | 197 mo ago | 150 | Antonio Martins Da Costa CEO | — | — |
| 5 | ENGIE Provider of integrated renewable and low-carbon energy solutions | $155M | 89 mo ago | 3,101 3,101 → 3,266 (+5%) | Frank Demaille CEO | — | 1 internship · 2 partnerships |
| 6 | Select Water Provider of waste water treatment services | $139M | 103 mo ago | 3,026 | John Schmitz CEO | — | — |
| 7 | H2O Midstream Provider of infrastructure services for recycling waste water in oil industry | $100M | 119 mo ago | 31 | — | — | — |
| 8 | Breakwater Energy Provider of water management and supply chain services | $100M | 35 mo ago | 77 | — | — | — |
| 9 | Verde Clean Fuels Developer of low-carbon gasoline production technologies using natural gas and biomass feedstocks. 40Growth top 38%Funding top 41%Talent top 42%News top 45% All 8 signals ▾Growthtop 38% Fundingtop 41% Talenttop 42% Newstop 45% Globalbottom 37% Marketbottom 33% Partnersbottom 32% Techbottom 28% Growth: Fresh capital in last 24 mo Funding: Raised $70.0M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 40/100 | $70M | 18 mo ago | — | Ernest Miller Chief Executive Officer | — | — |
| 10 | Armada Water Treatment of industrial waste water | $36M | 138 mo ago | 51 | mitch burroughs Co-Founder | — | — |
| 11 | Southwaste Provider of waste recycling and water treatment services | $30M | 182 mo ago | 290 | Charles Wilcox CEO & COO | — | — |
| 12 | WCA Waste Provider of waste management services | $27M | 183 mo ago | 1,500 | — | — | — |
| 13 | SunGas Renewables Provider of water management services | $23M | 25 mo ago | 19 | Robert Rigdon Chief Executive Officer | 37 patents Water‑rich gasification systems for renewable hydrogen and methanol production | — |
| 14 | Proton Green Provider of carbon capture utilization and storage services | $12M | 34 mo ago | — | Steven Looper CEO | — | — |
| 15 | Element Markets Provider of solutions for carbon and emission credits | $12M | 61 mo ago | — | Randall Lack Co-Founder | — | — |
| 16 | Encino Environmental Services Provider of environmental testing and emissions monitoring services. | $11M | 17 mo ago | 33 | — | — | 1 launch |
| 17 | Orbital Energy Group Developer of solar energy projects | $10M | 85 mo ago | 335 | — | — | — |
| 18 | Aeromine Technologies Developer of wind energy projects 22Talent top 28%Funding top 50%Tech bottom 47%Growth bottom 35% All 6 signals ▾Talenttop 28% Fundingtop 50% Techbottom 47% Growthbottom 35% Globalbottom 29% Marketbottom 21% Talent: 3 named leaders on record · 3 C-suite/founder profiles curated Funding: Raised $9.0M across 1 rounds · 1 rounds over 3 yrs (0.3/yr) rank vs industry peers · Fliar Intelligence Index 22/100 | $9M | 24 mo ago | 8 | David Asarnow Co-Founder & CEO | — | — |
| 19 | Advantek Waste Management Services Provider of oilfield waste management services | $8M | 33 mo ago | 57 | Ahmed Abou-Sayed Founder | 7 patents Mitigating methane, monitoring GHGs, CO2 injection, and slurry disposal in fractured subsurface formations. | — |
| 20 | Drylet Provider for water and wastewater treatment applications | $7M | 50 mo ago | 11 | Trevor Turbidy President and CEO | 33 patents Drylet enhances agricultural biotech via dry delivery formulations, silica bioreactors, and wastewater treatment. | 2 partnerships |
| 21 | Hydrus Technology Developer of wastewater treatment technology services | $7M | 90 mo ago | 6 | Brendan Ryan CEO | 6 patents Oil and gas well fishing tools for retrieving lost equipment | — |
| 22 | Blackbuck Resources Provider of water management services 14Talent top 34%Funding bottom 49%Global bottom 32%Market bottom 15% All 4 signals ▾Talenttop 34% Fundingbottom 49% Globalbottom 32% Marketbottom 15% Talent: Analyst team rating 4/5 · 2 named leaders on record Funding: Raised $6.0M across 2 rounds · 2 rounds over 8 yrs (0.2/yr) rank vs industry peers · Fliar Intelligence Index 14/100 | $6M | 47 mo ago | 17 | Samuel Oliver Chief Executive Officer | — | — |
| 23 | EWM Provider of drinking water services | $5M | 141 mo ago | 7 | — | — | — |
| 24 | Vertex Energy Provider of waste recycling services in oil industry | $4M | 121 mo ago | 497 | — | — | 1 expansion |
| 25 | Resource Environmental Solutions Provider of ecological restoration and water resource solutions | $3M | 52 mo ago | 623 623 → 656 (+5%) | — | — | — |
| 26 | Synagro Provider of municipal and industrial waste-water treatment services | $2M | 91 mo ago | 738 738 → 569 (-23%) | — | 11 patents Processing and drying biosolids into nutrient‑rich pellets for cement and fertilizer applications. | — |
| 27 | Regional Water Provider of waste water management services | $1M | 214 mo ago | 55 | — | — | — |
| 28 | Katz Water Technology Provider of water purifier products and testing services | $1M | 73 mo ago | 10 | — | 46 patents Advanced water purification and metal/mineral extraction with remote fluid monitoring systems. | — |
| 29 | Breen Energy Provider of waste ecosystem services | $462K | 238 mo ago | — | Susannah Vickers Co-Founder | — | — |
| 30 | RPD Energy Developer of wind energy projects | $307K | 67 mo ago | 9 | Eric Alam CEO | — | — |
| 31 | Truuli Environmental Provider of carbon trading, advisory, asset management, and environmental consultancy services | $200K | 37 mo ago | — | Livio Stan CEO | — | — |
Top 12 Environment companies in Houston
#1
Public · Houston, Texas · founded 2007$70Mraised▾
Public · Houston, Texas · founded 2007
{}
Fliar Intelligence Index™ 40how this company ranks against its industry peers
Growth
top 38%Funding
top 41%Talent
top 42%News
top 45%Global
bottom 37%Market
bottom 33%Growth: Fresh capital in last 24 mo
Funding: Raised $70.0M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) · Last round Post IPO (Dec 2024)
Talent: 1 named leader on record · 1 C-suite/founder profile curated · 4 leadership moves in 12 mo
Funding rounds
- Dec 2024Post IPO$50M
- Feb 2024Post IPO$20M
Founders & team
Investors
Cottonmouth Ventures, GCC
#2
Acquired · Houston, Texas · founded 2010 · 33 employees$11Mraised▾
Acquired · Houston, Texas · founded 2010 · 33 employees
{}
LinkedIn Pulse recent public activity · Jul 2026
Audience: 5k LinkedIn followers
Activity: 1 product launches announced in 12 mo
Funding rounds
- Jan 2025Grant (prize money)$5M
- Jan 2025Grant (prize money)$6M
- Jan 2022PE—
Investors
EnCap Investments, OSTI
Tech stack
CloudflareCloudflare Bot ManagementCore-JsFont AwesomeGoogle AnalyticsGoogle Font Api
#3
Public · Houston, Texas · founded 2010 · 644 employees$1.5Braised▾
Public · Houston, Texas · founded 2010 · 644 employees
A residential solar and energy storage provider. The company facilitates home energy production through solar panel installation and offers ongoing support. Services include system monitoring, maintenance, and energy management solutions.
Fliar Intelligence Index™ 72how this company ranks against its industry peers
Tech
top 21%Product
top 22%Funding
top 23%Market
top 35%Growth
top 37%Moat
top 39%Tech: 76 technologies across 5/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 · Observability: Microsoft Clarity, New Relic
Product: 2 published apps (81.2k installs) · Company stage: Public
Funding: Raised $1.5B across 15 rounds · 15 rounds over 12 yrs (1.2/yr) · Last round Post IPO (May 2021)
Funding rounds
- May 2021Post IPO—
- May 2020Post IPO$185M
- Jan 2020Post IPO$55M
- Nov 2018Series G$176M
Founders & team
Investors
UBS, Magnetar, Tortoise, US Bank, CIT, Triangle Peak Partners
Tech stack
Amazon CloudfrontAmazon S3Amazon SesAmazon Web ServicesApple Icloud MailBootstrap
#4
Series B · Houston, Texas · founded 2019 · 19 employees$23Mraised▾
Series B · Houston, Texas · founded 2019 · 19 employees
Provider of water management services
LinkedIn Pulse recent public activity · Jul 2026
Audience: 4k LinkedIn followers
Funding rounds
- May 2024Series B$23M
Founders & team
Tech stack
Apache Http ServerBootstrapCdnjsCloudflareCookieyesCore-Js
#5
Acquired · Houston, Texas · founded 2012 · 77 employees$99.9Mraised▾
Acquired · Houston, Texas · founded 2012 · 77 employees
Provider of water management and supply chain services
Funding rounds
- Jul 2023Series C$99.9M
Investors
Multiply
#6
Series A · Houston, Texas · founded 2017 · 8 employees$9Mraised▾
Series A · Houston, Texas · founded 2017 · 8 employees
Developer of wind energy projects
Fliar Intelligence Index™ 22how this company ranks against its industry peers
Talent
top 28%Funding
top 50%Tech
bottom 47%Growth
bottom 35%Global
bottom 29%Market
bottom 21%Talent: 3 named leaders on record · 3 C-suite/founder profiles curated
Funding: Raised $9.0M across 1 rounds · 1 rounds over 3 yrs (0.3/yr) · Last round Series A (May 2024)
Tech: 21 technologies across 3/8 capability areas · Cloud: Cloudflare · Security: Cloudflare Bot Management, Hsts
Audience (LinkedIn): 15k LinkedIn followers — 2.3% of this cohort's audience
Funding rounds
- May 2024Series A$9M
- Jan 2023Seed—
Founders & team
Investors
Thornton Tomasetti, Syska, STO Building Group, SHoP Architects, Veriten, Greentown Labs
Tech stack
CloudflareCloudflare Bot ManagementCore-JsFacebook LoginGodaddyGoogle Font Api
#7
Public · Houston, Texas · founded 2015 · 124 employees$1.1Braised▾
Public · Houston, Texas · founded 2015 · 124 employees
Provider of waste disposal and recycling services
LinkedIn Pulse recent public activity · Jul 2026
Audience: 14k LinkedIn followers — 2.1% of this cohort's audience · 346 engagements/post (2.4× cohort median)
Funding rounds
- Jun 2019Conventional Debt$150M
- May 2019Series A—
- Dec 2018Conventional Debt$800M
- Jun 2018Conventional Debt$200M
Founders & team
Investors
Barclays, SunTrust Bank, GIC, SunTrust Robinson Humphrey, Mubadala Capital
Tech stack
Apple Icloud MailBootstrapBugherdCloudflareCloudflare Bot ManagementFancybox
#8
Funding Raised · Houston, Texas · founded 2021$11.6Mraised▾
Funding Raised · Houston, Texas · founded 2021
Provider of carbon capture utilization and storage services
Funding rounds
- Aug 2023Grant (prize money)$11.6M
Founders & team
Investors
DOE
#9
Seed · Houston, Texas · founded 2014 · 57 employees$8Mraised▾
Seed · Houston, Texas · founded 2014 · 57 employees
Provider of oilfield waste management services
Funding rounds
- Sep 2023Seed$8M
- Dec 2014Seed—
Founders & team
Investors
Lowercarbon Capital, TPG, Plug and Play Tech Center
Tech stack
Animate.CssCloudflareCloudflare Bot ManagementCrazy EggFont AwesomeGodaddy
#10
Funding Raised · Houston, Texas · founded 2016$350Mraised▾
Funding Raised · Houston, Texas · founded 2016
Provider of water management services
Funding rounds
- Jul 2019Conventional Debt$350M
Founders & team
#11
Acquired · Houston, Texas · founded 1998 · 150 employees$318Mraised▾
Acquired · Houston, Texas · founded 1998 · 150 employees
Horizon Wind Energy developed, owned, and operated wind farms in North America. The company was formerly known as Zilkha Renewable Energy and changed its name to Horizon Wind Energy in August 2005. The company was founded in 1998 and was based in Houston, Texas with additional offices in New York, Oregon, Illinois, California, Colorado, and Minnesota. Since March 2007, Horizon Wind Energy operated as a subsidiary of EDP-Energias de Portugal, S.A. The company was renamed to EDP Renewables North America in 2011.
Fliar Intelligence Index™ 48how this company ranks against its industry peers
Funding
top 42%Market
top 47%Talent
bottom 45%Global
bottom 29%Funding: Raised $318M across 2 rounds · 2 rounds over 17 yrs (0.1/yr) · Last round PE (Dec 2009)
Market: 150 employees (top 36% of Energy)
Talent: 1 named leader on record
Funding rounds
- Dec 2009PE$90M
- Dec 2009PE$228M
Founders & team
Investors
GE Capital, J P Morgan Wealth Management
#12
Public · Houston, Texas · founded 2008 · 3026 employees$138.9Mraised▾
Public · Houston, Texas · founded 2008 · 3026 employees
Provider of waste water treatment services
Funding rounds
- Nov 2017Post IPO$536.9M
- Dec 2016Series B$13.9M
- 2011Series B—
- May 2010Series B$125M
Founders & team
Investors
SCF Partners, Crestview Partners
Tech stack
Apache Http ServerBootstrapCdnjsCloudflareCloudflare Bot ManagementDocusign
Funding & investor landscape
$4.1Btotal disclosed funding
33companies funded
81disclosed rounds
0rounds last 90 days
Most active investors
Notable founders
Ernest Miller
Chief Executive Officer · Verde Clean Fuels
John Berger
Founder & CEO · Sunnova
Robert Rigdon
Chief Executive Officer · SunGas Renewables
David Asarnow
Co-Founder & CEO · Aeromine Technologies
Carsten Westergaard
Founder · Aeromine Technologies
Stephen Johnson
Founder · WaterBridge
Steven Looper
CEO · Proton Green
Omar Abou-Sayed
CEO · Advantek Waste Management Services
Ahmed Abou-Sayed
Founder · Advantek Waste Management Services
William Zartler
Founder & CEO · Solaris
Bill Zartler
CEO · Solaris
Antonio Martins Da Costa
CEO · Horizon Wind Energy
Prism market signals · United States · country-scoped Prism corpus, 6,440,608 docs
Market landscape — 10 sub-themes by coverage
Share of Environment coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
RESEARCH SIGNALS · United States
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.
research sentiment over time
200820172026
enthusiastic · positive · guarded tone
Tone is overwhelmingly optimistic and softening — the enthusiastic (strongly-positive) share moved 41% → 38% across 2008–2026.
top research entities
- United States Geological Survey157
- Cary Institute of Ecosystem Studies112
- Environmental Protection Agency84
- National Research Council79
- National Park Service76
leading researchers
Kelly, Vicky · Kelly, Victoria · Catalyst Cooperative · U.S. DOE EM · McIntyre, Cheryl · Stocker-Waldhuber, Martin · Seiser, Bernd · Hartl, Lea
▲
Breakthroughs481 · 16%
▲ 12%→18% share
▲1.5× share momentum0 median citations77% since 2021mostly methods-led
Software deployment papers surged 2→31, signaling rapid commercialization of environmental monitoring platforms.
rising sub-themes (early→recent)
- Software deployment2→31
- Pollution3→27
- Air quality index1→25
- Water quality10→34
- Air pollution3→25
Newly emergingScalability 0→21 · Biodiversity 0→18 · Climate change 0→14
Landmark Environmental sensor networks in ecological research · 165 cites
◆
Advancements804 · 26%
▼ 31%→24% share
▼0.8× share momentum0 median citations64% since 2021mostly methods-led
Air quality index research intensified sharply — papers rose from 14 to 60 across U.S. institutions.
rising sub-themes (early→recent)
- Air quality index14→60
- Air pollution8→51
- Pollutant4→32
- Sampling (signal processing)14→42
- Water quality23→48
Newly emergingKey (lock) 0→17 · Range (aeronautics) 0→10 · Microplastics 0→10
Landmark Tracking complex mixtures of chemicals in our changing environment · 716 cites
▼
Concerns626 · 21%
▼ 21%→20% share
▲1.0× share momentum0 median citations68% since 2021mostly empirical
Microplastics newly emerged as a concern signal, reaching 19 papers alongside marine debris entering at 14.
rising sub-themes (early→recent)
- Human health1→32
- Pollution4→33
- Air quality index6→31
- Pollutant6→28
- Biodiversity1→22
Newly emergingMicroplastics 0→19 · Agriculture 0→18 · Marine debris 0→14
Landmark Past, present, and future perspectives of environmental DNA (eDNA) metabarcoding: A systematic review in methods, monito · 1,184 cites
RESEARCH HOTSPOTS · United States
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.
SF Bay Area80 · +0.27
Boston61 · +0.43
New York54 · +0.35
Seattle53 · +0.24
Los Angeles37 · +0.39
San Diego33 · +0.26
Atlanta32 · +0.25
Ann Arbor22 · +0.24
Pittsburgh19 · +0.37
Philadelphia19 · +0.41
PATENT SIGNAL · United States
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.
450 filings343 assigneespeak 60/yr2016–2025
filing momentum (YoY 2016–2025)
top patent filers
- LEEO41
- Valencell25
- United Parcel Service21
- Honeywell INT20
- Venturedyne18
- Apple18
- Pillar TECH17
- IND Scient16
Common questions
How many Environment companies are there in Houston, United States?
Radar tracks 172 indexable Environment companies headquartered in Houston, United States that meet our profile-completeness bar.
What is the total funding raised by Environment companies in Houston, United States?
The Environment companies in Houston, United States on this list have raised a combined $4.1B in disclosed equity funding across 33 funded companies.
Which is the highest-funded Environment company in Houston, United States?
Sunnova is the highest-funded Environment company in Houston, United States, with $1.5B in disclosed equity funding.
How many Environment companies in Houston, United States are funded?
33 of the 172 Environment companies in Houston, United States on this list have disclosed at least one equity funding round.
How many Environment unicorns are there in Houston, United States?
None of the Environment companies in Houston, United States on this list currently has a disclosed valuation of $1B or more.
Who are the top investors in Houston, United States Environment companies?
The most active investors in Houston, United States Environment companies on this list include Greentown Labs, OSTI, United States Department of Agriculture, DOE, EnCap Investments.
Riya SenguptaFinancials
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.