Radar · Environment in Boston
Best Environment Companies in Boston, United States
The 48 best Environment companies in Boston, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Poseidon Water.
By Rohit KhannaTrends & Stories
48companies tracked
$513.7Mdisclosed funding
0unicorns
22have raised
FLIAR INTELLIGENCE · ENVIRONMENT × BOSTON
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
458kcombined LinkedIn audience
85%of audience held by top 3
2companies hiring publicly (12 mo)
Ranked: Best Environment companies in Boston
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Poseidon Water Provider of seawater and water desalination services | $200M | 121 mo ago | Series C | — | 1995 | WeeblyMySQLPHP+16 | — | — |
| 2 | Enel X Developer of utility-scale renewable energy projects | $168M | 67 mo ago | Acquired | — | 2001 | Adobe Experience ManagerJavaGraphQL+25 | — | — |
| 3 | BlueWave Developer of solar and wind energy projects | $64M | 35 mo ago | Acquired | Sean Finnerty CEO | 2010 | Craft CMSApple iCloud MailMicrosoft 365+16 | — | — |
| 4 | Oasys water Provider of water treatment and filtration methods | $25M | 145 mo ago | Series B | Angela Co-Founder | 2008 | — | 251 patents Advanced forward osmosis membranes and draw‑solvent recovery technologies | — |
| 5 | First Wind Wind Energy development company | $17M | 172 mo ago | Acquired | Tim Rosenzweig Co-Founder & Chief Financial Officer | 2002 | — | — | — |
| 6 | Solstice Community solar provider unlocking clean energy access and savings for all | $7M | 66 mo ago | Acquired | Sandhya Murali Co-Founder and COO | 2016 | WordPress Block EditorElementorWordPress+43 | 2 patents Provides medical fiducial markers for image-guided surgery and diagnostics. | — |
| 7 | Sungage Financial Provider of solar financing services | $5M | 13 mo ago | Series A | Sylvain Mansier Co-Founder & President | 2011 | WebflowApple iCloud MailGoogle Workspace+19 | — | 1 job opening · 1 partnership |
| 8 | ESG Flo Provider of ESG data aggregation and reporting solutions | $5M | 33 mo ago | Seed | — | 2022 | — | — | — |
| 9 | circe Provider of air management services | $5M | 23 mo ago | Seed | Milad Moshfeghian Co-Founder | 2021 | WixSentryBootstrap+11 | — | — |
| 10 | Yeloha Solar sharing | $4M | 136 mo ago | Deadpooled | — | 2012 | — | — | — |
| 11 | Mona Lee Provider of solar photovoltaic modules | $3M | 34 mo ago | Seed | Walid Halty Co-Founder & CEO | 2022 | WordPressMySQLPHP+35 | — | — |
| 12 | Thiozen Provider of clean hydrogen production systems from H2S waste streams. | $3M | 29 mo ago | Seed | Ajay Bawa Co-Founder | 2020 | — | 7 patents Patents concentrated in transport & manufacturing processes | — |
| 13 | Veolia Provider of waste management solution | $2M | 126 mo ago | Acquired | Frederic Van Heems President & CEO | 1984 | DrupalPHPVarnish+27 | — | — |
| 14 | Elio Provider of climate change advisory services | $2M | 17 mo ago | Seed | Kami Krista Co-Founder & CEO | 2020 | ReactAmazon Web ServicesCloudflare+7 | — | — |
| 15 | Resonant Energy Solar installation company | $520K | 40 mo ago | Funding Raised | Ben Underwood Co-CEO & Founder | 2016 | — | — | 1 job opening |
| 16 | Drink Well Provider of drinking water services | $500K | 101 mo ago | Seed | Minhaj Chowdhury Co-Founder & CEO | 2013 | Cart FunctionalitySquarespace CommerceSquarespace+14 | — | — |
Top 12 Environment companies in Boston
#1
Series A · Boston, Massachusetts · founded 2011 · 71 employees$5.5Mraised▾
Series A · Boston, Massachusetts · founded 2011 · 71 employees
Provider of solar financing services
LinkedIn Pulse recent public activity · Jul 2026
Audience: 6k LinkedIn followers
Hiring: 1 hiring post in 12 mo (public) · hiring: Solar Finance Specialist
Activity: 1 partnerships announced in 12 mo
Funding rounds
- Jun 2025Series A$7.2M
- Oct 2024Conventional Debt$5M
- May 2024Conventional Debt$29.2M
- Feb 2024Grant (prize money)$6.6M
Founders & team
Tech stack
Apple Icloud MailBootstrapCloudflareCookieyesDatadogFont Awesome
#2
Seed · Boston, Massachusetts · founded 2020 · 3 employees$2Mraised▾
Seed · Boston, Massachusetts · founded 2020 · 3 employees
Provider of climate change advisory services
LinkedIn Pulse recent public activity · Jul 2026
Audience: 933 LinkedIn followers
Activity: 1 awards announced in 12 mo
Funding rounds
- Feb 2025Seed$2M
- 2021Seed—
Founders & team
Investors
Climate Capital, Ananda Impact Ventures, Overview, Cerulean Ventures, We R, RHEINEST
#3
Seed · Boston, Massachusetts · founded 2021 · 20 employees$5Mraised▾
Seed · Boston, Massachusetts · founded 2021 · 20 employees
Provider of air management services
Funding rounds
- Sep 2024Seed$5M
- Oct 2021Seed$1.6M
- 2021Seed—
Founders & team
Investors
ReGen Ventures, Undeterred Capital, Ponderosa Ventures, Bee Partners, Exceptional Ventures, Climate Capital
#4
Acquired · Boston, Massachusetts · founded 2010 · 58 employees$64Mraised▾
Acquired · Boston, Massachusetts · founded 2010 · 58 employees
Developer of solar and wind energy projects
LinkedIn Pulse recent public activity · Jul 2026
Audience: 16k LinkedIn followers — 3.5% of this cohort's audience
Funding rounds
- Sep 2023Conventional Debt$64M
Founders & team
Investors
KeyBank
Tech stack
Amazon Web ServicesApple Icloud MailCloudflareCloudflare Bot ManagementCraft CmsDocusign
#5
Acquired · Boston, Massachusetts · founded 2001 · 513 employees$168Mraised▾
Acquired · Boston, Massachusetts · founded 2001 · 513 employees
Developer of utility-scale renewable energy projects
LinkedIn Pulse recent public activity · Jul 2026
Audience: 232k LinkedIn followers — 50.7% of this cohort's audience
Funding rounds
- Jan 2021Grant (prize money)$279K
- Sep 2020Grant (prize money)—
- Feb 2020Grant (prize money)$1M
- Jun 2019Grant (prize money)$418.7K
Investors
Foundation Capital, Braemar Energy Ventures, DFJ, NAV.VC, Masscec, Europa
Tech stack
Adobe AnalyticsAdobe Audience ManagerAdobe Client Data LayerAdobe Experience ManagerAdobe Experience Platform Identity ServiceAdobe Experience Platform Launch
#6
Seed · Boston, Massachusetts · founded 2020 · 5 employees$3Mraised▾
Seed · Boston, Massachusetts · founded 2020 · 5 employees
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LinkedIn Pulse recent public activity · Jul 2026
Audience: 1k LinkedIn followers
Funding rounds
- Feb 2024Grant (prize money)$1.2M
- Dec 2021Grant (prize money)$254.4K
- Sep 2021Seed$3M
Founders & team
Investors
America’s Seed Fund, Eni Next, Good Growth Capital, Mount Wilson Ventures, Cleantech Open, Supply Chain Ventures
#7
Seed · Boston, Massachusetts · founded 2022 · 6 employees$5.2Mraised▾
Seed · Boston, Massachusetts · founded 2022 · 6 employees
Provider of ESG data aggregation and reporting solutions
Funding rounds
- Oct 2023Seed$5.2M
Investors
Rho Capital Partners, Tola Capital, Bain & Company, Contour Venture Partners
#8
Series C · Boston, Massachusetts · founded 1995 · 12 employees$200Mraised▾
Series C · Boston, Massachusetts · founded 1995 · 12 employees
Provider of seawater and water desalination services
Funding rounds
- 2016Series C$200M
Investors
Stonepeak Infrastructure Partners, Nimes Capital
Tech stack
Apache Http ServerBabelCloudflareCloudflare Bot ManagementCore-JsFancybox
#9
Seed · Boston, Massachusetts · founded 2022$3.2Mraised▾
Seed · Boston, Massachusetts · founded 2022
Provider of solar photovoltaic modules
LinkedIn Pulse recent public activity · Jul 2026
Audience: 4k LinkedIn followers
Activity: 1 partnerships · 1 awards (incl. Dividend) announced in 12 mo
Founders & team
Investors
Ludlow Ventures, Shrug Capital, Palm Tree Crew, Plug and Play Tech Center, Coalition Operators
#10
Series B · Boston, Massachusetts · founded 2008 · 9 employees$25Mraised▾
Series B · Boston, Massachusetts · founded 2008 · 9 employees
Provider of water treatment and filtration methods
Funding rounds
- Jun 2014Conventional Debt$7.5M
- Oct 2013Series B$15M
- Aug 2010Grant (prize money)—
- Aug 2010Grant (prize money)$578.1K
Founders & team
Investors
Trinity Capital Investment, Advanced Technology Ventures, DFJ, Flagship Pioneering, OSTI, Clean Pacific Ventures
Tech stack
WordpressMysqlPhpGeneratepressGeneratepress Gp PremiumJetpack
#11
Acquired · Boston, Massachusetts · founded 2016 · 55 employees$7.4Mraised▾
Acquired · Boston, Massachusetts · founded 2016 · 55 employees
Community solar provider unlocking clean energy access and savings for all. This organization focuses on expanding access to solar energy through community solar gardens, enabling individuals and businesses to benefit from solar power without needing to install panels on their property. They connect subscribers to local solar projects, providing credits on their electricity bills based on the solar garden's production. This model promotes affordable, accessible, and responsible energy consumption, supporting a cleaner and more equitable energy grid. They offer a platform for individuals, households, developers, and businesses to participate in the clean energy transition, fostering a community-driven approach to sustainability. The organization emphasizes ease of enrollment, cost savings, and environmental impact, making solar energy accessible to a broader audience. They provide customer support, educational resources, and partnership opportunities to further their mission of equitable access to clean energy.
LinkedIn Pulse recent public activity · Jul 2026
Audience: 13k LinkedIn followers — 2.9% of this cohort's audience
Activity: 1 expansions announced in 12 mo
Funding rounds
- Jan 2021Seed$3.1M
- Oct 2020Seed$100K
- Aug 2020Conventional Debt$3.1M
- May 2020Conventional Debt$967.5K
Founders & team
Investors
MassChallenge, Techstars, Elemental, American Family Insurance Institute for Corporate and Social Impact, Masscec, Active Impact Investments
Tech stack
AdrollAdroll Cmp SystemAmazon CloudfrontAmazon Web ServicesAnime.JsApache Http Server
#12
Acquired · Boston, Massachusetts · founded 2002 · 201 employees$17.4Mraised▾
Acquired · Boston, Massachusetts · founded 2002 · 201 employees
First Wind is an independent North American wind energy company focused exclusively on the development, ownership and operation of wind farms. It currently focuses on developing wind farms in the northeastern and western regions of the U.S. and in Hawaii. In Nov. 2014, it was acquired for $2.4B by Sunedison and TerraForm Power.
Funding rounds
- Mar 2012Conventional Debt$236M
- Dec 2011Conventional Debt$210M
- Dec 2010Conventional Debt$76M
- Jul 2009Series B$17.4M
Founders & team
Investors
MDP, KeyBank
Funding & investor landscape
$513.7Mtotal disclosed funding
18companies funded
53disclosed rounds
0rounds last 90 days
Most active investors
Notable founders
Sylvain Mansier
Co-Founder & President · Sungage Financial
Kami Krista
Co-Founder & CEO · Elio
Milad Moshfeghian
Co-Founder · circe
Ciaran Dunn
Co-Founder · circe
Sean Finnerty
CEO · BlueWave
Ajay Bawa
Co-Founder · Thiozen
Ryan Gillis
Co-Founder · Thiozen
Walid Halty
Co-Founder & CEO · Mona Lee
Akarshan Kumar
Co-Founder · Mona Lee
Angela
Co-Founder · Oasys water
John
Co-Founder · Oasys water
Sandhya Murali
Co-Founder and COO · Solstice
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
Breakthroughs are rising (12%→18% of field), led by Software deployment.
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
Advancements are cooling (31%→24% of field), led by Air quality index.
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
Concerns are cooling (21%→20% of field), led by Human health.
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
- Apple18
- Venturedyne18
- Pillar TECH17
- IND Scient16
Common questions
How many Environment companies are there in Boston, United States?
Radar tracks 48 indexable Environment companies headquartered in Boston, United States that meet our profile-completeness bar.
What is the total funding raised by Environment companies in Boston, United States?
The Environment companies in Boston, United States on this list have raised a combined $513.7M in disclosed equity funding across 18 funded companies.
Which is the highest-funded Environment company in Boston, United States?
Poseidon Water is the highest-funded Environment company in Boston, United States, with $200M in disclosed equity funding.
How many Environment companies in Boston, United States are funded?
18 of the 48 Environment companies in Boston, United States on this list have disclosed at least one equity funding round.
How many Environment unicorns are there in Boston, United States?
None of the Environment companies in Boston, United States on this list currently has a disclosed valuation of $1B or more.
Who are the top investors in Boston, United States Environment companies?
The most active investors in Boston, United States Environment companies on this list include MassChallenge, Techstars, Cleantech Open, Climate Capital, DFJ.
Rohit KhannaTrends & Stories
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.