Radar · Environment in United States
Best Environment Companies in United States
The 7881 best Environment companies in United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Madison Air.
By Riya SenguptaFinancials
7881companies tracked
$93.6Bdisclosed funding
4unicorns
1398have raised
$93.6 billion in disclosed funding across 7,881 tracked companies tells you something real about the scale of Environment investment in the United States. This directory ranks the best Environment companies in the United States by disclosed equity funding and recent funding momentum, and the numbers at the top are hard to ignore.
Madison Air leads at $10.9 billion, a figure that dwarfs the next tier: Silicon Ranch at $1.9 billion, SolarLandscape at $600 million, and Valar Atomics just a hair behind at $599 million. Four unicorns have emerged from this pool. So what's actually moving capital right now? Climate mobilization and transformational leadership are the themes drawing attention, and app-layer signals back that up: median install growth across 161 environmental and renewables apps is running at roughly 20% year-over-year. I'd call that a confirmation, not a coincidence. Regulatory scrutiny is tightening too, as expert panels weigh expansion approvals against pending legal challenges, which means compliance costs are a real variable for any company you're evaluating here. The funding is concentrated, the momentum is measurable, and the directory below gives you the full ranked picture.
Sources & further reading
- 3 ESG Stocks to Add to Your Portfolio for Sustainable Returns in 2026
- Yes, your allergies are getting worse
- Hay fever season set to be 2 weeks longer that will 'impact millions of people'
FLIAR INTELLIGENCE · ENVIRONMENT × UNITED STATES
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
1.5Mcombined LinkedIn audience
34%of audience held by top 3
6companies hiring publicly (12 mo)
Ranked: Best Environment companies in United States
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Market signals (1y) | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Madison Air Homepage | Madison Air 79Funding top 10%Growth top 20%News top 28%Talent top 38% All 6 signals ▾Fundingtop 10% Growthtop 20% Newstop 28% Talenttop 38% Techtop 46% Globalbottom 25% Funding: Raised $10.9B across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 79/100 | $10.9B | 2 mo ago | — | Dale Philippi Co-CEO | WordPress Block EditorWordPressMySQL+20 | 5 signals IPO · Announcements | — | — |
| 2 | Dominion Energy Producer and transporter of energy 82Funding top 16%Market top 18%Tech top 23%Fin. health top 26% All 13 signals ▾Fundingtop 16% Markettop 18% Techtop 23% Fin. healthtop 26% Producttop 30% Customerstop 32% Moattop 34% Innovationtop 36% Newstop 50% Globalbottom 49% Talentbottom 49% Growthbottom 47% Partnersbottom 47% Funding: Raised $4.0B across 6 rounds · 6 rounds over 8 yrs (0.8/yr) Market: 17,700 employees (top 2% of Energy) · Revenue ~$16.5B rank vs industry peers · Fliar Intelligence Index 82/100 | $4.0B | 13 mo ago | 17,700 17,700 → 27,861 (+57%) · sector median +45% | Robert Blue CEO | WordPress Block EditorWordPressMySQL+36 | 17 signals ▼59% Earnings · Contracts · M&A | — | — |
| 3 | NextEra Energy Developer of energy solutions 80Partners top 18%Funding top 20%Fin. health top 20%News top 21% All 11 signals ▾Partnerstop 18% Fundingtop 20% Fin. healthtop 20% Newstop 21% Markettop 23% Moattop 31% Techtop 33% Growthtop 39% Producttop 47% Globalbottom 46% Talentbottom 32% Partners: 2 partnership announcements in 12 mo (2 in 24 mo) · 21 contract events in 12 mo Funding: Raised $2.8B across 3 rounds · 3 rounds over 7 yrs (0.4/yr) rank vs industry peers · Fliar Intelligence Index 80/100 | $2.8B | 16 mo ago | 9,500 | Jay Emmanuel Partner | ArcGIS API for JavaScriptVuetifyVue.js+21 | 64 signals ▲121% Earnings · Contracts · Announcements | — | — |
| 4 | CFS Provider of tokamak nuclear fusion reactors 67Funding top 16%News top 21%Tech top 22%Growth top 29% All 11 signals ▾Fundingtop 16% Newstop 21% Techtop 22% Growthtop 29% Talenttop 29% Moattop 35% Marketbottom 49% Globalbottom 39% Innovationbottom 36% Patentsbottom 35% Partnersbottom 32% Funding: Raised $2.1B across 6 rounds · 6 rounds over 8 yrs (0.8/yr) News: 11 BI events in 12 mo (of 23 tracked, 5 types) · +120% YoY rank vs industry peers · Fliar Intelligence Index 67/100 | $2.1B | 9 mo ago | 151 | Bob Mumgaard Co-Founder & CEO | WordPressApple iCloud MailMySQL+20 | 11 signals ▲120% Funding · Capital raise · Leadership | 5 patents EBV-based diagnostic and therapeutic assays for chronic fatigue syndrome | 1 launch · 1 partnership |
| 5 | Silicon Ranch developer of solar power projects 67Funding top 11%Growth top 26%Moat top 31%Talent bottom 49% All 8 signals ▾Fundingtop 11% Growthtop 26% Moattop 31% Talentbottom 49% Marketbottom 45% Techbottom 43% Newsbottom 42% Globalbottom 37% Funding: Raised $1.9B across 12 rounds · 12 rounds over 12 yrs (1.0/yr) Growth: Headcount 74 → 115 (+55%) across vintages · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 67/100 | $1.9B | 1 mo ago | 115 115 → 249 (+117%) · sector median +45% | Reagan Farr President / CEO | WordPressMySQLPHP+17 | — | — | — |
| 6 | TAE Technologies 🦄 Developer of FRC nuclear fusion reactors 74Product top 18%Funding top 19%Moat top 22%News top 29% All 12 signals ▾Producttop 18% Fundingtop 19% Moattop 22% Newstop 29% Patentstop 32% Growthtop 33% Innovationtop 35% Techtop 39% Markettop 41% Talenttop 42% Partnerstop 45% Globalbottom 42% Product: 5 distinct product lines · Company stage: Series G Funding: Raised $1.2B across 11 rounds · 11 rounds over 24 yrs (0.5/yr) rank vs industry peers · Fliar Intelligence Index 74/100 | $1.2B | 12 mo ago | 224 224 → 299 (+33%) · sector median +45% | Andrew Conrad Co-Founder | WordPress Block EditorElementorWordPress+26 | 16 signals ▲700% M&A · Announcements · Leadership | 122 patents Modular fusion power systems with plasma heating, pulse charging, and energy storage control | 1 partnership |
| 7 | Pine Gate Renewables Developer of utility-scale solar and energy storage projects 60Funding top 14%Talent top 38%Growth top 45%Market top 46% All 7 signals ▾Fundingtop 14% Talenttop 38% Growthtop 45% Markettop 46% Techtop 49% Newstop 50% Globalbottom 39% Funding: Raised $1.1B across 5 rounds · 5 rounds over 4 yrs (1.2/yr) Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 60/100 | $1.1B | 19 mo ago | 1,099 | James Luster Co-Founder | WordPressApple iCloud MailMicrosoft 365+25 | 3 signals ▲50% Acquisition | — | — |
| 8 | Array Technologies Manufacturer of solar trackers 78Funding top 19%Patents top 22%Innovation top 29%Talent top 29% All 12 signals ▾Fundingtop 19% Patentstop 22% Innovationtop 29% Talenttop 29% Fin. healthtop 32% Producttop 32% Moattop 35% Techtop 37% Growthtop 43% Newstop 49% Marketbottom 49% Globalbottom 40% Funding: Raised $846M across 3 rounds · 3 rounds over 10 yrs (0.3/yr) Patents: 68 patents matched (strict assignee match) · 26 filings since 2022 vs 9 in 2017-21 rank vs industry peers · Fliar Intelligence Index 78/100 | $846M | 11 mo ago | 14 | Ron Corio Founder | DrupalApple iCloud MailMicrosoft 365+27 | 16 signals ▼41% Earnings · Leadership | 68 patents Solar panel mounting hardware and stowable array systems for hail protection | — |
| 9 | TerraPower Designer of nuclear reactors 60Funding top 18%Patents top 20%Moat top 29%Innovation top 30% All 11 signals ▾Fundingtop 18% Patentstop 20% Moattop 29% Innovationtop 30% Growthtop 38% Partnerstop 46% Markettop 47% Talentbottom 49% Globalbottom 47% Newsbottom 46% Techbottom 29% Funding: Raised $810M across 6 rounds · 6 rounds over 18 yrs (0.3/yr) Patents: 835 patents matched (strict assignee match) · 326 filings since 2022 vs 384 in 2017-21 rank vs industry peers · Fliar Intelligence Index 60/100 | $810M | 12 mo ago | 299 | Christopher Levesque President and CEO | Node.jsThree.jsUnoCSS+5 | 6 signals ▼57% Capital raise · Contracts · Funding | 835 patents Advanced nuclear reactor monitoring, fuel recycling, and supercritical CO2 power cycle technologies. | 2 job openings · 1 partnership · 5 expansions |
| 10 | Madison Energy Investments Provider of platform for investors 45Funding top 17%Tech top 46%Global bottom 38%Market bottom 33% All 5 signals ▾Fundingtop 17% Techtop 46% Globalbottom 38% Marketbottom 33% Newsbottom 22% Funding: Raised $800M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Tech: 21 technologies across 5/8 capability areas · Cloud: Cloudflare rank vs industry peers · Fliar Intelligence Index 45/100 | $800M | 9 mo ago | 32 | — | WebflowSalesforceLeaflet+18 | — | — | — |
| 11 | PureCycle Provider of waste plastic recycling services 40Funding top 26%Product top 35%Partners top 37%Growth top 40% All 11 signals ▾Fundingtop 26% Producttop 35% Partnerstop 37% Growthtop 40% Newstop 40% Techtop 47% Marketbottom 45% Fin. healthbottom 40% Globalbottom 37% Moatbottom 25% Innovationbottom 24% Funding: Raised $722M across 11 rounds · 11 rounds over 4 yrs (2.8/yr) Product: 0 product launch events in 12 mo, 1 the year before · Company stage: Public rank vs industry peers · Fliar Intelligence Index 40/100 | $722M | 16 mo ago | 177 177 → 146 (-18%) · sector median +45% | — | WebflowApple iCloud MailMicrosoft 365+14 | 35 signals ▼26% Announcements · Earnings · Leadership | — | — |
| 12 | X Energy Developer of small modular & high temperature gas cooled nuclear reactor 84Patents top 11%Funding top 14%Product top 14%Growth top 17% All 11 signals ▾Patentstop 11% Fundingtop 14% Producttop 14% Growthtop 17% Innovationtop 20% Moattop 32% Techtop 36% Talenttop 38% Markettop 45% Globalbottom 49% Newsbottom 22% Patents: 1,201 patents matched (strict assignee match) · 615 filings since 2022 vs 342 in 2017-21 Funding: Raised $605M across 11 rounds · 11 rounds over 10 yrs (1.1/yr) rank vs industry peers · Fliar Intelligence Index 84/100 | $605M | 6 mo ago | 246 | Kam Ghaffarian Founder | DrupalPHPAmazon Web Services+25 | — | 1,201 patents Oil & gas extraction and processing, hydraulic fracturing equipment, and uranium recovery power systems | — |
| 13 | DSD Provider of solar panel installation and operation & maintenance services 69Funding top 16%Market top 45%Talent bottom 49%Global bottom 45% All 6 signals ▾Fundingtop 16% Markettop 45% Talentbottom 49% Globalbottom 45% Moatbottom 38% Newsbottom 22% Funding: Raised $605M across 8 rounds · 8 rounds over 5 yrs (1.6/yr) Market: 192 employees (top 31% of Energy) rank vs industry peers · Fliar Intelligence Index 69/100 | $605M | 9 mo ago | 192 | Erik Schiemann CEO | — | — | — | — |
| 14 | SolarLandscape Provider of solar integration & project financing services 80Funding top 19%Tech top 23%Innovation top 25%Product top 32% All 9 signals ▾Fundingtop 19% Techtop 23% Innovationtop 25% Producttop 32% Growthtop 35% Partnerstop 47% Newsbottom 49% Marketbottom 45% Globalbottom 36% Funding: Raised $600M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Tech: 47 technologies across 6/8 capability areas · Cloud: Amazon S3, Amazon Web Services rank vs industry peers · Fliar Intelligence Index 80/100 | $600M | 1 mo ago | 91 | — | WordPressApple iCloud MailMicrosoft 365+28 | — | — | 1 expansion |
| 15 | Valar Atomics Manufacturer of nuclear fission reactors 60Funding top 17%Growth top 20%News top 32%Tech top 48% All 7 signals ▾Fundingtop 17% Growthtop 20% Newstop 32% Techtop 48% Talentbottom 49% Globalbottom 32% Marketbottom 28% Funding: Raised $599M across 4 rounds · 4 rounds over 1 yrs (4.0/yr) Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 60/100 | $599M | 2 mo ago | — | Isaiah Taylor Founder & CEO | Apple iCloud MailMicrosoft 365Node.js+12 | 6 signals Funding | — | 1 partnership |
| 16 | Recurrent Energy Developer of utility-scale solar projects 74Funding top 24%Tech top 28%Growth top 35%Product top 37% All 10 signals ▾Fundingtop 24% Techtop 28% Growthtop 35% Producttop 37% Newstop 38% Innovationtop 40% Partnerstop 42% Moattop 48% Marketbottom 48% Globalbottom 39% Funding: Raised $585M across 9 rounds · 9 rounds over 19 yrs (0.5/yr) Tech: 42 technologies across 5/8 capability areas · Cloud: Amazon S3, Amazon Web Services rank vs industry peers · Fliar Intelligence Index 74/100 | $585M | 13 mo ago | 110 | — | WordPressApple iCloud MailMySQL+26 | 13 signals ▲44% Acquisition · Earnings · Contracts | — | — |
| 17 | Invenergy Developer and operator of sustainable energy solutions 64Funding top 22%Tech top 37%Growth top 40%Market top 43% All 8 signals ▾Fundingtop 22% Techtop 37% Growthtop 40% Markettop 43% Newstop 43% Talenttop 46% Moattop 48% Globalbottom 39% Funding: Raised $575M across 6 rounds · 6 rounds over 17 yrs (0.4/yr) Tech: 29 technologies across 4/8 capability areas · Cloud: Cloudflare, Vercel rank vs industry peers · Fliar Intelligence Index 64/100 | $575M | 17 mo ago | 1,276 1,276 → 2,477 (+94%) · sector median +45% | Jim Murphy Co-Founder | ContentstackApple iCloud MailNode.js+21 | 6 signals ▼33% Hiring · Leadership | — | 1 internship · 1 partnership |
| 18 | Helion 🦄 Provider of deuterium fuel-based magnetic-nuclear fusion reactor 69Product top 18%Funding top 19%News top 21%Growth top 22% All 11 signals ▾Producttop 18% Fundingtop 19% Newstop 21% Growthtop 22% Moattop 26% Talenttop 30% Innovationtop 34% Markettop 46% Partnersbottom 43% Globalbottom 37% Techbottom 32% Product: 7 distinct product lines · Company stage: Series F Funding: Raised $552M across 7 rounds · 7 rounds over 15 yrs (0.5/yr) rank vs industry peers · Fliar Intelligence Index 69/100 | $552M | 16 mo ago | 44 | George Votroubek Co-Founder | WordPressApple iCloud MailMicrosoft 365+20 | 7 signals ▲133% Leadership · Contracts · Announcements | — | — |
| 19 | Inertia Developer of technology pursuing commercialization of fusion energy production 67Funding top 22%Talent top 28%Tech bottom 39%Global bottom 33% All 4 signals ▾Fundingtop 22% Talenttop 28% Techbottom 39% Globalbottom 33% Funding: Raised $450M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Talent: 3 named leaders on record · 3 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 67/100 | $450M | 4 mo ago | — | Andrea Kritcher Co-Founder | Apple iCloud MailGoogle WorkspaceThree.js+5 | — | — | 1 partnership |
| 20 | SHINE Technologies Producer of nuclear isotopes using fusion techniques 69Patents top 17%Funding top 18%Innovation top 27%Growth top 34% All 10 signals ▾Patentstop 17% Fundingtop 18% Innovationtop 27% Growthtop 34% Techtop 37% Moattop 41% Talentbottom 49% Marketbottom 47% Globalbottom 42% Newsbottom 37% Patents: 228 patents matched (strict assignee match) · 220 filings since 2022 vs 8 in 2017-21 Funding: Raised $414M across 17 rounds · 17 rounds over 15 yrs (1.1/yr) rank vs industry peers · Fliar Intelligence Index 69/100 | $414M | 3 mo ago | 165 165 → 346 (+110%) · sector median +45% | Greg Piefer Founder & CEO | WebflowApple iCloud MailMicrosoft 365+27 | 3 signals ▼40% Funding | 228 patents Advanced separation and processing of radioactive isotopes, nuclear fuel, and rare earth elements | 2 partnerships |
| 21 | Enfinity Developer of solar energy projects 69Funding top 24%News top 34%Product top 36%Talent top 38% All 10 signals ▾Fundingtop 24% Newstop 34% Producttop 36% Talenttop 38% Growthtop 40% Markettop 47% Techtop 49% Globalbottom 48% Partnersbottom 42% Moatbottom 38% Funding: Raised $388M across 5 rounds · 5 rounds over 17 yrs (0.3/yr) News: 9 BI events in 12 mo (of 49 tracked, 8 types) · -18% YoY rank vs industry peers · Fliar Intelligence Index 69/100 | $388M | 4 mo ago | 265 | Carlos Domenech CEO | WordPressApple iCloud MailMicrosoft 365+29 | 9 signals ▼18% Capital raise · Funding · Acquisition | — | 1 award |
| 22 | Nautilus Solar Community solar provider offering savings and supporting clean energy initiatives 50Funding top 28%Tech top 30%Talent top 38%Moat top 48% All 8 signals ▾Fundingtop 28% Techtop 30% Talenttop 38% Moattop 48% Growthtop 50% Marketbottom 39% Globalbottom 37% Newsbottom 21% Funding: Raised $339M across 3 rounds · 3 rounds over 17 yrs (0.2/yr) Tech: 42 technologies across 5/8 capability areas · Cloud: Cloudflare rank vs industry peers · Fliar Intelligence Index 50/100 | $339M | 9 mo ago | 57 57 → 119 (+109%) · sector median +45% | Laura Stern co-Founder and Board Member | HubSpot CMS HubSentryApple iCloud Mail+30 | — | — | 1 award |
| 23 | Orano Fuel and power producer in the nuclear energy sector 64Product top 17%Funding top 25%Growth top 35%Market top 36% All 10 signals ▾Producttop 17% Fundingtop 25% Growthtop 35% Markettop 36% Techtop 41% Moattop 48% Talentbottom 49% Fin. healthbottom 44% Globalbottom 43% Newsbottom 27% Product: 7 published apps (2.6k installs) · Company stage: Public Funding: Raised $308M across 24 rounds · 24 rounds over 13 yrs (1.8/yr) rank vs industry peers · Fliar Intelligence Index 64/100 | $308M | 15 mo ago | 19,683 | Philippe Knoche CEO | Progress SitefinityLeafletChart.js+20 | — | — | — |
| 24 | Treaty Oak Clean Energy Developer of utility scale solar projects 65Funding top 23%Talent bottom 49%Global bottom 48% All 3 signals ▾Fundingtop 23% Talentbottom 49% Globalbottom 48% Funding: Raised $300M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Talent: 1 named leader on record · 1 C-suite/founder profile curated rank vs industry peers · Fliar Intelligence Index 65/100 | $300M | 10 mo ago | 20 | Chris Elrod Chief Executive Officer | — | — | — | — |
| 25 | Ascent Solar Manufacturer of flexible thin-film solar panels for varied applications 37Product top 14%News top 25%Funding top 30%Growth top 30% All 12 signals ▾Producttop 14% Newstop 25% Fundingtop 30% Growthtop 30% Innovationtop 39% Patentstop 42% Talentbottom 49% Techbottom 39% Globalbottom 38% Moatbottom 37% Fin. healthbottom 36% Marketbottom 19% Product: 4 distinct product lines · Company stage: Public News: 6 BI events in 12 mo (of 88 tracked, 11 types) · +200% YoY rank vs industry peers · Fliar Intelligence Index 37/100 | $265M | 4 mo ago | 16 | Paul Warley CEO | HubSpot CMS HubEnvoyHubSpot+8 | 6 signals ▲200% Funding · Incorporation | 96 patents Thin‑film solar cell manufacturing, flexible substrates, and monolithic integration for airborne power. | — |
| 26 | Pattern Energy Group Renewable Energy focused IPP 76Innovation top 20%Funding top 26%Product top 26%Fin. health top 29% All 10 signals ▾Innovationtop 20% Fundingtop 26% Producttop 26% Fin. healthtop 29% Markettop 36% Growthtop 45% Techtop 48% Moattop 48% Newsbottom 38% Globalbottom 37% Innovation: 5 product lines Funding: Raised $256M across 1 rounds · 1 rounds over 8 yrs (0.1/yr) rank vs industry peers · Fliar Intelligence Index 76/100 | $256M | 12 mo ago | 491 | — | WordPress Block EditorWordPressApple iCloud Mail+22 | — | — | — |
| 27 | ArtIn Energy Help sustain a carbon-free world by producing hydrogen using solar energy and water for clean, efficient… 62Growth top 35%Funding top 41%Tech top 47%Talent bottom 49% All 5 signals ▾Growthtop 35% Fundingtop 41% Techtop 47% Talentbottom 49% Globalbottom 33% Growth: Fresh capital in last 24 mo Funding: Raised $255M across 1 rounds · 1 rounds over 2 yrs (0.5/yr) rank vs industry peers · Fliar Intelligence Index 62/100 | $255M | 2 mo ago | — | Jhon Cohen CEO | Cart FunctionalityWooCommerceWordPress+29 | — | — | — |
| 28 | BKV Producer of net-zero natural gas, pursuing carbon-neutral energy solutions. 69Funding top 20%Fin. health top 20%Tech top 31%Market top 40% All 12 signals ▾Fundingtop 20% Fin. healthtop 20% Techtop 31% Markettop 40% Growthtop 40% Partnerstop 40% Newstop 45% Talentbottom 49% Moatbottom 44% Patentsbottom 37% Globalbottom 33% Innovationbottom 28% Funding: Raised $250M across 3 rounds · 3 rounds over 6 yrs (0.5/yr) Fin. health: Revenue ~$377M (FY2025) · Net margin 11.7% rank vs industry peers · Fliar Intelligence Index 69/100 | $250M | 13 mo ago | 158 | Christopher Kalnin Founder & CEO | Craft CMSPHPNode.js+22 | 11 signals ▼35% Earnings · Acquisition · Contracts | 2 patents Monitoring and verification technologies for carbon‑neutral gas distribution pipelines | — |
| 29 | Terra Energy Provider of solar energy solutions for residential properties, offering a subscription model with no upfront… 76Talent top 23%Growth top 28%Product top 30%Funding top 36% All 7 signals ▾Talenttop 23% Growthtop 28% Producttop 30% Fundingtop 36% Techtop 41% Globalbottom 48% Customersbottom 2% Talent: 5 named leaders on record · 5 C-suite/founder profiles curated Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 76/100 | $140M | 4 mo ago | — | Luis Ruiz Co-Founder & CEO | Node.jsVue.jsNuxt.js+19 | — | — | — |
| 30 | Onyx Renewable Partners Renewable Energy development company 48Funding top 26%Growth top 43%Moat top 48%Market top 49% All 7 signals ▾Fundingtop 26% Growthtop 43% Moattop 48% Markettop 49% Techbottom 40% Globalbottom 32% Newsbottom 21% Funding: Raised $132M across 3 rounds · 3 rounds over 12 yrs (0.2/yr) Growth: Headcount 54 → 69 (+28%) across vintages · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 48/100 | $132M | 11 mo ago | 69 69 → 75 (+9%) · sector median +45% | — | — | — | — | — |
| 31 | Sylmar Group Provider of industrial water treatment services 29Funding top 19%Talent top 38%News bottom 47%Global bottom 36% All 5 signals ▾Fundingtop 19% Talenttop 38% Newsbottom 47% Globalbottom 36% Marketbottom 18% Funding: Raised $130M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 29/100 | $130M | 3 mo ago | 6 | Michael Warady Co-Founder | — | — | — | — |
| 32 | Aspen Power Provider of renewable energy asset development, construction, and operation services 48Funding top 25%News top 40%AI top 45%Tech top 49% All 8 signals ▾Fundingtop 25% Newstop 40% AItop 45% Techtop 49% Talentbottom 48% Marketbottom 39% Globalbottom 38% Moatbottom 38% Funding: Raised $120M across 4 rounds · 4 rounds over 4 yrs (1.0/yr) News: 3 BI events in 12 mo (of 9 tracked, 4 types) · Top themes: Leadership, Capital raise rank vs industry peers · Fliar Intelligence Index 48/100 | $120M | 5 mo ago | 66 | David Berv Co-Founder & Senior Advisor | WordPress Block EditorWordPressMySQL+20 | 3 signals Leadership · Capital raise | — | 1 internship |
| 33 | CrossBoundary Energy Provider of fully financed renewable energy solutions for commercial and industrial clients 48Growth top 25%News top 31%Funding top 37%Tech top 41% All 6 signals ▾Growthtop 25% Newstop 31% Fundingtop 37% Techtop 41% Globalbottom 37% Marketbottom 30% Growth: Fresh capital in last 24 mo News: 5 BI events in 12 mo (of 25 tracked, 4 types) · +150% YoY rank vs industry peers · Fliar Intelligence Index 48/100 | $83M | 1 mo ago | 21 | — | WordPressMySQLPHP+24 | 5 signals ▲150% Funding · Capital raise | — | — |
| 34 | Soltage Clean energy solutions provider: development, finance, and operation of renewable projects 50Innovation top 20%Product top 26%Funding top 40%Tech top 47% All 8 signals ▾Innovationtop 20% Producttop 26% Fundingtop 40% Techtop 47% Moattop 48% Newsbottom 43% Globalbottom 37% Marketbottom 33% Innovation: 7 product lines Product: 7 distinct product lines · Company stage: Acquired rank vs industry peers · Fliar Intelligence Index 50/100 | $82M | 6 mo ago | 23 | — | WebflowSalesforceSmartlook+10 | — | — | — |
| 35 | Terrestrial Energy Developer of small modular reactor 64Funding top 25%Moat top 31%Growth top 35%Tech top 38% All 8 signals ▾Fundingtop 25% Moattop 31% Growthtop 35% Techtop 38% Talenttop 38% Newstop 48% Marketbottom 38% Globalbottom 37% Funding: Raised $76.2M across 19 rounds · 19 rounds over 12 yrs (1.6/yr) Moat: Editorial + unicorn rating 8/10 · Soonicorn rank vs industry peers · Fliar Intelligence Index 64/100 | $76M | 3 mo ago | 78 | Chris Popoff Ex-Co-Founder | DrupalApple iCloud MailMicrosoft 365+23 | 3 signals ▲50% Capital raise · Announcements | — | 2 partnerships · 1 award |
| 36 | City of Rapid City Provider of water management services 74Funding top 32%Market top 33%Tech top 38%Growth top 45% All 5 signals ▾Fundingtop 32% Markettop 33% Techtop 38% Growthtop 45% Globalbottom 33% Funding: Raised $74.7M across 30 rounds · 30 rounds over 20 yrs (1.5/yr) Market: 302 employees (top 20% of Environment) · Top-1,000,000 web property rank vs industry peers · Fliar Intelligence Index 74/100 | $75M | 10 mo ago | 302 | — | WordPressApple iCloud MailMySQL+16 | — | — | 2 job openings |
| 37 | Husk Power Systems AI-powered distributed energy platform delivering clean, reliable power in Global South 76Funding top 22%Customers top 24%Product top 26%Talent top 28% All 13 signals ▾Fundingtop 22% Customerstop 24% Producttop 26% Talenttop 28% Growthtop 32% AItop 35% Innovationtop 39% Techtop 41% Globaltop 42% Newstop 49% Fin. healthbottom 49% Marketbottom 47% Moatbottom 46% Funding: Raised $74.3M across 13 rounds · 13 rounds over 18 yrs (0.7/yr) Customers: Play-Store rating 5.00★ across 2,880 ratings (3 apps) · Marquee-customer mentions: top 30% of tracked companies rank vs industry peers · Fliar Intelligence Index 76/100 | $74M | 9 mo ago | 443 443 → 480 (+8%) · sector median +45% | Ratnesh Yadav Co-Founder | WordPressMySQLPHP+26 | 4 signals ▼33% Capital raise · IPO · New product | — | — |
| 38 | Torus Manufacturer of power generators and energy management app 40Patents top 24%Funding top 29%Innovation top 30%Tech top 30% All 11 signals ▾Patentstop 24% Fundingtop 29% Innovationtop 30% Techtop 30% Growthtop 35% Producttop 36% Talenttop 38% Globalbottom 40% Moatbottom 40% Marketbottom 14% Fin. healthbottom 8% Patents: 56 patents matched (strict assignee match) · 54 filings since 2022 vs 0 in 2017-21 Funding: Raised $67.0M across 3 rounds · 3 rounds over 2 yrs (1.5/yr) rank vs industry peers · Fliar Intelligence Index 40/100 | $67M | 1 mo ago | 1 | Nate Walkingshaw Co-Founder & CEO | DatoCMSApple iCloud MailGoogle Workspace+30 | — | 56 patents Flywheel-based mechanical energy storage with magnetic bearings and AI management | 1 partnership · 2 awards |
| 39 | Last Energy Developer of small modular reactor 45Funding top 30%Growth top 45%Talent bottom 49%Tech bottom 48% All 7 signals ▾Fundingtop 30% Growthtop 45% Talentbottom 49% Techbottom 48% Globalbottom 39% Marketbottom 36% Newsbottom 36% Funding: Raised $64.0M across 4 rounds · 4 rounds over 7 yrs (0.6/yr) Growth: Web rank 5,000,000 → 10,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 45/100 | $64M | 6 mo ago | 45 | Bret Kugelmass CEO | WebflowGSAPcore-js+15 | — | — | 1 launch |
| 40 | Radiant Nuclear 🦄 Developer of portable nuclear microreactors designed to replace diesel generators 55Funding top 26%Growth top 28%Moat top 37%Market bottom 49% All 8 signals ▾Fundingtop 26% Growthtop 28% Moattop 37% Marketbottom 49% Talentbottom 49% Techbottom 41% Globalbottom 32% Partnersbottom 32% Funding: Raised $55.0M across 7 rounds · 7 rounds over 6 yrs (1.2/yr) Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 55/100 | $55M | 6 mo ago | 34 | Doug Bernauer Founder & CEO | GridsomeApple iCloud MailGSAP+9 | — | — | — |
| 41 | Avalanche Developer of energy-dense fusion microreactors for clean power generation 50Funding top 30%Patents top 30%Talent top 38%Innovation top 39% All 10 signals ▾Fundingtop 30% Patentstop 30% Talenttop 38% Innovationtop 39% Techtop 40% Moattop 41% Growthtop 48% Globalbottom 43% Newsbottom 39% Marketbottom 22% Funding: Raised $45.0M across 5 rounds · 5 rounds over 4 yrs (1.2/yr) Patents: 604 patents matched (strict assignee match) · 41 filings since 2022 vs 133 in 2017-21 rank vs industry peers · Fliar Intelligence Index 50/100 | $45M | 5 mo ago | — | Robin Langtry Co-Founder & CEO | Node.jsHeadless UITailwind CSS+11 | 4 signals ▼50% M&A · Buyback | 604 patents Magnetic nonvolatile memory (MRAM) devices, dual-layer cells, selectors, and packaging solutions | — |
| 42 | Claros 72Funding top 24%Tech top 35%Talent top 38%Global bottom 33% All 4 signals ▾Fundingtop 24% Techtop 35% Talenttop 38% Globalbottom 33% Funding: Raised $39.8M across 2 rounds · 2 rounds over 1 yrs (2.0/yr) Tech: 34 technologies across 4/8 capability areas · Cloud: Cloudflare rank vs industry peers · Fliar Intelligence Index 72/100 | $40M | 3 mo ago | — | Daniel Kultran Co-Founder & CEO | WordPressMySQLPHP+31 | — | — | 1 partnership · 1 expansion |
| 43 | Antares Industries Provider of micro-sized nuclear reactors for remote off-grid 22Funding top 22%Talent top 38%Moat top 50%Tech bottom 40% All 8 signals ▾Fundingtop 22% Talenttop 38% Moattop 50% Techbottom 40% Globalbottom 35% Innovationbottom 31% Patentsbottom 29% Marketbottom 27% Funding: Raised $38.1M across 4 rounds · 4 rounds over 3 yrs (1.3/yr) Talent: 2 named leaders on record · 2 C-suite/founder profiles curated rank vs industry peers · Fliar Intelligence Index 22/100 | $38M | 6 mo ago | — | Julia Dewahl Co-Founder | Framer SitesApple iCloud MailReact+6 | — | 2 patents Reduces muzzle flash in firearms via integrated flash‑hider suppressor technology. | 2 partnerships |
| 44 | Scenic Hill Solar Developer of solar energy projects 48Innovation top 20%Funding top 32%Product top 32%Talent top 38% All 7 signals ▾Innovationtop 20% Fundingtop 32% Producttop 32% Talenttop 38% Marketbottom 31% Globalbottom 25% Techbottom 23% Innovation: 7 product lines Funding: Raised $31.8M across 2 rounds · 2 rounds over 5 yrs (0.4/yr) rank vs industry peers · Fliar Intelligence Index 48/100 | $32M | 5 mo ago | 12 | Bill Halter CEO | — | — | — | — |
| 45 | LIS Technologies Provider of laser isotope separation technologies optimized for uranium (HALEU) power generation 32Talent top 28%Funding top 38%Growth top 40%News bottom 47% All 8 signals ▾Talenttop 28% Fundingtop 38% Growthtop 40% Newsbottom 47% Techbottom 42% Moatbottom 38% Globalbottom 29% Marketbottom 22% Talent: 3 named leaders on record · 3 C-suite/founder profiles curated Funding: Raised $13.5M across 7 rounds · 7 rounds over 3 yrs (2.3/yr) rank vs industry peers · Fliar Intelligence Index 32/100 | $14M | 3 mo ago | — | Jay Yu Co-Founder | WordPressMySQLPHP+16 | 4 signals Funding · Announcements · Capital raise | — | 1 job opening |
| 46 | NuCube Energy Nuclear fission technology, developing innovative micro-reactor solutions to transform the way our society is… 21Talent top 38%Funding top 42%Tech bottom 47%Market bottom 25% All 5 signals ▾Talenttop 38% Fundingtop 42% Techbottom 47% Marketbottom 25% Globalbottom 25% Talent: 2 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $13.0M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 21/100 | $13M | 3 mo ago | — | Bill Gross Co-Founder | WixSentryBootstrap+11 | — | — | 1 job opening · 1 award |
| 47 | Standard Thermal Developer of thermal energy storage for solar power applications 45Funding top 35%Talent bottom 45%Global bottom 25% All 3 signals ▾Fundingtop 35% Talentbottom 45% Globalbottom 25% Funding: Raised $10.8M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) Talent: 1 named leader on record rank vs industry peers · Fliar Intelligence Index 45/100 | $11M | 2 mo ago | — | Austin Vernon CEO | — | — | — | — |
| 48 | Realta Fusion Developer of nuclear energy projects 37Funding top 30%Growth top 35%Talent top 38%News bottom 47% All 8 signals ▾Fundingtop 30% Growthtop 35% Talenttop 38% Newsbottom 47% Moatbottom 38% Techbottom 30% Globalbottom 29% Marketbottom 21% Funding: Raised $9.0M across 4 rounds · 4 rounds over 3 yrs (1.3/yr) Growth: Fresh capital in last 24 mo rank vs industry peers · Fliar Intelligence Index 37/100 | $9M | 3 mo ago | 5 | Oliver Schmitz Co-Founder | Cart FunctionalityWooCommerceWordPress+18 | — | — | 1 internship · 1 launch · 1 partnership |
| 49 | Applied Atomics Operator of on-site nuclear fission plants providing dedicated power to industries 65Talent top 33%Funding top 42%Global bottom 48% All 3 signals ▾Talenttop 33% Fundingtop 42% Globalbottom 48% Talent: 3 named leaders on record · 2 C-suite/founder profiles curated Funding: Raised $8.3M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) rank vs industry peers · Fliar Intelligence Index 65/100 | $8M | 2 mo ago | — | Paul Keutelian Co-Founder & CTO | — | — | — | 1 partnership |
| 50 | SUNation Offers commercial and residential solar solutions 29Funding top 34%Market bottom 48%Tech bottom 45%News bottom 39% All 6 signals ▾Fundingtop 34% Marketbottom 48% Techbottom 45% Newsbottom 39% Growthbottom 34% Globalbottom 30% Funding: Raised $6.7M across 2 rounds · 2 rounds over 1 yrs (2.0/yr) Market: 106 employees (top 33% of Environment) · Top-5,000,000 web property rank vs industry peers · Fliar Intelligence Index 29/100 | $7M | 2 mo ago | 106 106 → 98 (-8%) · sector median +45% | — | WordPressMySQLPHP+15 | 5 signals ▼55% Earnings · Announcements | — | — |
Top 12 Environment companies in United States
#1
Public · Minneapolis, Minnesota · founded 2005$10.9Braised▾
Public · Minneapolis, Minnesota · founded 2005
As one of the world’s largest privately held companies, Madison Air exists to help our customers realize the often invisible, but very real return better air has for us all.
Fliar Intelligence Index™ 79how this company ranks against its industry peers
Funding
top 10%Growth
top 20%News
top 28%Talent
top 38%Tech
top 46%Global
bottom 25%Funding: Raised $10.9B across 1 rounds · 1 rounds over 1 yrs (1.0/yr) · Last round Series D (Apr 2026)
Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo
News: 5 BI events in 12 mo (of 5 tracked, 2 types) · 4 high-value events (IPO/M&A/funding/contracts) in 12 mo · Top themes: IPO, Announcements
Audience (LinkedIn): 11k LinkedIn followers
Hiring (LinkedIn): 3 hiring posts in 12 mo (public) · momentum -3 · hiring: Director of Information Technology, Corporate Internal Audit Manager
Activity (LinkedIn): 1 product launches announced in 12 mo
Funding rounds
- Apr 2026Series D$10.9B
Founders & team
Tech stack
CdnjsCloudflareCloudflare Bot ManagementCookieyesFont AwesomeGoogle Analytics
#2
Series G · Nashville, Tennessee · founded 2010 · 115 employees$1.9Braised▾
Series G · Nashville, Tennessee · founded 2010 · 115 employees
developer of solar power projects
Fliar Intelligence Index™ 67how this company ranks against its industry peers
Funding
top 11%Growth
top 26%Moat
top 31%Talent
bottom 49%Market
bottom 45%Tech
bottom 43%Funding: Raised $1.9B across 12 rounds · 12 rounds over 12 yrs (1.0/yr) · Last round Series G (May 2026)
Growth: Headcount 74 → 115 (+55%) across vintages · Fresh capital in last 24 mo
Moat: Editorial + unicorn rating 8/10 · Soonicorn · 10 curated direct competitors tracked
Audience (LinkedIn): 25k LinkedIn followers
Funding rounds
- Jun 2025Series G$450.5M
- May 2025Grant (prize money)$3.1M
- Dec 2022Series F$375M
- Jan 2022Series F$775M
Founders & team
Investors
Manulife Investment Management, TD Bank, Mountain Group Partners, Shell, Greystone Infrastructure Fund, Partners Group
Tech stack
CloudflareCloudflare Bot ManagementDocusignElementorGodaddyGoogle Font Api
#3
Funding Raised · Neptune City, New Jersey · founded 1985 · 91 employees$600Mraised▾
Funding Raised · Neptune City, New Jersey · founded 1985 · 91 employees
Provider of solar integration & project financing services
Fliar Intelligence Index™ 80how this company ranks against its industry peers
Funding
top 19%Tech
top 23%Innovation
top 25%Product
top 32%Growth
top 35%Partners
top 47%Funding: Raised $600M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) · Last round Conventional Debt (May 2026)
Tech: 47 technologies across 6/8 capability areas · Cloud: Amazon S3, Amazon Web Services · Devops: Nginx
Innovation: 5 product lines
Audience (LinkedIn): 22k LinkedIn followers
Activity (LinkedIn): 1 expansions announced in 12 mo
Funding rounds
- May 2026Conventional Debt$600M
Investors
First Citizens Bank, KeyBank, National Bank of Canada, ATLAS SP Partners, Apterra, Siemens
Tech stack
Adobe Audience ManagerAmazon S3Amazon Web ServicesApple Icloud MailAzureAzure Edge Network
#4
Series B · El Segundo, California · founded 2023$599Mraised▾
Series B · El Segundo, California · founded 2023
Manufacturer of nuclear fission reactors
Fliar Intelligence Index™ 60how this company ranks against its industry peers
Funding
top 17%Growth
top 20%News
top 32%Tech
top 48%Talent
bottom 49%Global
bottom 32%Funding: Raised $599M across 4 rounds · 4 rounds over 1 yrs (4.0/yr) · Last round Series B (Apr 2026)
Growth: Web rank 10,000,000 → 5,000,000 YoY · Fresh capital in last 24 mo
News: 6 BI events in 12 mo (of 6 tracked, 1 types) · 6 high-value events (IPO/M&A/funding/contracts) in 12 mo · Top themes: Funding
Audience (LinkedIn): 13k LinkedIn followers
Activity (LinkedIn): 1 partnerships (incl. NVIDIA) announced in 12 mo
Funding rounds
- Apr 2026Series B$340M
- Apr 2026Conventional Debt$110M
- Dec 2025Series A—
- Nov 2025Series A$130M
Founders & team
Investors
Riot, AlleyCorp, Initialized Capital, Day One Ventures, Steel Atlas, Snowpoint Ventures
Tech stack
Apple Icloud MailBunnyCore-JsGoogle AnalyticsHstsLottiefiles
#5
Series D · Janesville, Wisconsin · founded 2005 · 165 employees$413.6Mraised▾
Series D · Janesville, Wisconsin · founded 2005 · 165 employees
Producer of nuclear isotopes using fusion techniques
Fliar Intelligence Index™ 69how this company ranks against its industry peers
Patents
top 17%Funding
top 18%Innovation
top 27%Growth
top 34%Tech
top 37%Moat
top 41%Patents: 228 patents matched (strict assignee match) · 220 filings since 2022 vs 8 in 2017-21 · Latest publication 2026
Funding: Raised $414M across 17 rounds · 17 rounds over 15 yrs (1.1/yr) · Last round Series D (Feb 2026)
Innovation: 228 patents (top 18% of patent-holders) · 220 filings since 2022 vs 8 in 2017-21
Audience (LinkedIn): 14k LinkedIn followers
Activity (LinkedIn): 2 partnerships (incl. newcleo) announced in 12 mo
Funding rounds
- Feb 2026Series D$240M
- Oct 2024Grant (prize money)—
- Oct 2023Series C$70M
- Jul 2023Grant (prize money)$1.1M
Founders & team
Investors
Government of the Netherlands, Fidelity Investments, Koch Disruptive Technologies, Baillie Gifford, Oaktree Capital Management, DOE
Tech stack
Apple Icloud MailCdnjsCloudflareCloudflare Bot ManagementCloudflare TurnstileCore-Js
#6
Series D · Miami, Florida · founded 2005 · 265 employees$388.4Mraised▾
Series D · Miami, Florida · founded 2005 · 265 employees
Developer of solar energy projects
Fliar Intelligence Index™ 69how this company ranks against its industry peers
Funding
top 24%News
top 34%Product
top 36%Talent
top 38%Growth
top 40%Market
top 47%Funding: Raised $388M across 5 rounds · 5 rounds over 17 yrs (0.3/yr) · Last round Conventional Debt (Feb 2026)
News: 9 BI events in 12 mo (of 49 tracked, 8 types) · -18% YoY · 5 high-value events (IPO/M&A/funding/contracts) in 12 mo
Product: 1 published app (6 installs) · Company stage: Series D
Audience (LinkedIn): 118k LinkedIn followers — 8.1% of this cohort's audience
Activity (LinkedIn): 1 awards announced in 12 mo
Funding rounds
- Feb 2026Conventional Debt$183M
- Jun 2025Conventional Debt$245M
- Oct 2023Series D$316.4M
- Dec 2020Series C$10M
Founders & team
Investors
Spring Creek Investment Management, ICG, Waterland, Nomura, CIP, Generate Capital
Tech stack
Anime.JsApple Icloud MailCdnjsCloudflareComplianzContact Form 7
#7
Series B · Cambridge, Massachusetts · founded 2018 · 151 employees$2.1Braised▾
Series B · Cambridge, Massachusetts · founded 2018 · 151 employees
Provider of tokamak nuclear fusion reactors. It uses rare-earth barium copper oxide in high-field superconducting magnets for the working of compact fusion reactors.
Fliar Intelligence Index™ 67how this company ranks against its industry peers
Funding
top 16%News
top 21%Tech
top 22%Growth
top 29%Talent
top 29%Moat
top 35%Funding: Raised $2.1B across 6 rounds · 6 rounds over 8 yrs (0.8/yr) · Last round Series B (Aug 2025)
News: 11 BI events in 12 mo (of 23 tracked, 5 types) · +120% YoY · 6 high-value events (IPO/M&A/funding/contracts) in 12 mo
Tech: 43 technologies across 6/8 capability areas · Cloud: Amazon Cloudfront, Amazon S3 · Devops: Nginx
Audience (LinkedIn): 67k LinkedIn followers — 4.6% of this cohort's audience
Activity (LinkedIn): 1 product launches · 1 partnerships (incl. UKAEA's Lithium Breeding Tritium Innovation (LIBRTI) program) announced in 12 mo
Funding rounds
- Aug 2025Series B$863M
- Dec 2021Series B$1.8B
- Mar 2021Grant (prize money)$1.5M
- May 2020Series A$84M
Founders & team
Investors
Future Ventures, Khosla Ventures, Lowercase Capital, Schooner Capital, Starlight Ventures, Safar Partners
Tech stack
All In One SeoAmazon CloudfrontAmazon S3Amazon Web ServicesApple Icloud MailCloudflare
#8
Series A · San Francisco, California · founded 2024$450Mraised▾
Series A · San Francisco, California · founded 2024
Developer of technology pursuing commercialization of fusion energy production. The company focuses on a direct path to commercial energy using a diode-pumped, solid state laser driving an indirect drive target with Deuterium-Tritium fuel. It aims to retire risk areas in laser design, target fabrication, and power plant design. The company plans to construct a demonstrator fusion power plant.
Fliar Intelligence Index™ 67how this company ranks against its industry peers
Funding
top 22%Talent
top 28%Tech
bottom 39%Global
bottom 33%Funding: Raised $450M across 1 rounds · 1 rounds over 1 yrs (1.0/yr) · Last round Series A (Feb 2026)
Talent: 3 named leaders on record · 3 C-suite/founder profiles curated
Tech: 8 technologies across 3/8 capability areas · Cloud: Cloudflare · Security: Http/3
Audience (LinkedIn): 5k LinkedIn followers
Activity (LinkedIn): 1 partnerships (incl. LLNL) announced in 12 mo
Funding rounds
- Feb 2026Series A$450M
Founders & team
Investors
Bessemer Venture Partners, Threshold, Long Journey Ventures, Google Ventures
Tech stack
Apple Icloud MailAstroCloudflareGoogle WorkspaceHttp/3Open Graph
#9
Acquired · United States · founded 1983 · 17700 employees$4Braised▾
Acquired · United States · founded 1983 · 17700 employees
In 2022, the company recorded annual revenues of $17.17B and a net profit of $0.99B.
Fliar Intelligence Index™ 82how this company ranks against its industry peers
Funding
top 16%Market
top 18%Tech
top 23%Fin. health
top 26%Product
top 30%Customers
top 32%Funding: Raised $4.0B across 6 rounds · 6 rounds over 8 yrs (0.8/yr) · Last round Grant (prize money) (May 2025)
Market: 17,700 employees (top 2% of Energy) · Revenue ~$16.5B · ~43% of tracked Solar Energy revenue (14 cos, FY2026)
Tech: 90 technologies across 6/8 capability areas · Cloud: Amazon Cloudfront, Amazon Web Services · Devops: Envoy, Nginx
Audience (LinkedIn): 216k LinkedIn followers — 14.8% of this cohort's audience
Funding rounds
- May 2025Grant (prize money)$33.6M
- Nov 2018Conventional Debt—
- Nov 2018Conventional Debt$362M
- Sep 2018Conventional Debt$3B
Founders & team
Investors
TD Securities, OSTI, Starwood Energy, Coast Funding, CalSTRS, Nationwide
Tech stack
Amazon CloudfrontAmazon Web ServicesApache Http ServerAzure Edge NetworkBootstrapCdnjs
#10
Public · Greenbelt, Maryland · founded 2010 · 246 employees$605Mraised▾
Public · Greenbelt, Maryland · founded 2010 · 246 employees
Developer of small modular & high temperature gas cooled nuclear reactor. It operates through tri-structural isotropic particle fuel. And also offers pebble bed nuclear reactor, zero emission energy, neutronics, and nuclear engineering services.
Fliar Intelligence Index™ 84how this company ranks against its industry peers
Patents
top 11%Funding
top 14%Product
top 14%Growth
top 17%Innovation
top 20%Moat
top 32%Patents: 1,201 patents matched (strict assignee match) · 615 filings since 2022 vs 342 in 2017-21 · Latest publication 2026
Funding: Raised $605M across 11 rounds · 11 rounds over 10 yrs (1.1/yr) · Last round Series D (Nov 2025)
Product: 4 distinct product lines · Company stage: Public
Audience (LinkedIn): 64k LinkedIn followers — 4.4% of this cohort's audience
Funding rounds
- Nov 2025Series D$700M
- Jun 2025Series C$22.8M
- Mar 2025PE—
- Feb 2025Series C$200M
Founders & team
Investors
DOE, ARPA-E, DL E&C, Doosan Enerbility, Ares Management, NGP
Tech stack
Acquia Cloud PlatformAcquia Cloud Site FactoryAdobe AnalyticsAdobe Experience Platform Identity ServiceAdobe Experience Platform LaunchAkamai
#11
Series A · Tampa, Florida · founded 2012$255Mraised▾
Series A · Tampa, Florida · founded 2012
Artinenergy is dedicated to revolutionizing the energy sector by using solar energy to produce hydrogen for clean, efficient electricity and heat generation without CO2 emissions. They are leading the clean energy transition to help sustain a carbon-free world.
Fliar Intelligence Index™ 62how this company ranks against its industry peers
Growth
top 35%Funding
top 41%Tech
top 47%Talent
bottom 49%Global
bottom 33%Growth: Fresh capital in last 24 mo
Funding: Raised $255M across 1 rounds · 1 rounds over 2 yrs (0.5/yr) · Last round Series A (Mar 2026)
Tech: 32 technologies across 3/8 capability areas · Cloud: Cloudflare · Security: Cloudflare Bot Management
Audience (LinkedIn): 3k LinkedIn followers
Funding rounds
- Mar 2026Series A$255M
- Apr 2024Seed—
Founders & team
Investors
Initiative Equity Partners, Agila Investments
Tech stack
Apache Http ServerCart FunctionalityCloudflareCloudflare Bot ManagementCore-JsElementor
#12
Public · Thornton, Colorado · founded 2005 · 16 employees$265.2Mraised▾
Public · Thornton, Colorado · founded 2005 · 16 employees
Manufacturer of flexible thin-film solar panels for varied applications. These photovoltaic modules are suitable for airborne vehicles, space missions, and agrivoltaic installations. The company utilizes CIGS chemistries with roll-to-roll manufacturing processes. The panels are built on a thin polyamide substrate.
Fliar Intelligence Index™ 37how this company ranks against its industry peers
Product
top 14%News
top 25%Funding
top 30%Growth
top 30%Innovation
top 39%Patents
top 42%Product: 4 distinct product lines · Company stage: Public
News: 6 BI events in 12 mo (of 88 tracked, 11 types) · +200% YoY · 5 high-value events (IPO/M&A/funding/contracts) in 12 mo
Funding: Raised $265M across 33 rounds · 33 rounds over 19 yrs (1.7/yr) · Last round Post IPO (Jan 2026)
Audience (LinkedIn): 4k LinkedIn followers
Funding rounds
- Jan 2026Post IPO$25M
- Dec 2025Post IPO$2M
- Oct 2024Post IPO$1.9M
- Apr 2023Post IPO$9M
Founders & team
Investors
Ironridge Global Partners, Hydro, Arion Agrophotovoltaic, Tritium Partners, Terminus Capital Partners
Tech stack
CloudflareCloudflare Bot ManagementCore-JsHstsHttp/3Hubspot
Funding & investor landscape
$93.6Btotal disclosed funding
1,221companies funded
3,812disclosed rounds
14rounds last 90 days
Most active investors
Notable founders
Dale Philippi
Co-CEO · Madison Air
Jill W
Co-CEO · Madison Air
Reagan Farr
President / CEO · Silicon Ranch
Isaiah Taylor
Founder & CEO · Valar Atomics
Greg Piefer
Founder & CEO · SHINE Technologies
Carlos Domenech
CEO · Enfinity
Julio Fournier Fisas
CEO Europe · Enfinity
Bob Mumgaard
Co-Founder & CEO · CFS
Robert Mumgaard
Co-Founder · CFS
Andrea Kritcher
Co-Founder · Inertia
Mike Dunne
Co-Founder & CTO · Inertia
Robert Blue
CEO · Dominion 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 rapidly rising computational breakthroughs in U.S. environmental monitoring research.
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 advancements intensified sharply — papers rose 14→60, now dominating the advancements segment 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 concern is newly emerging in U.S. environmental monitoring, entering the segment fresh with 19 papers signaling growing alarm.
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 United States?
Radar tracks 7881 indexable Environment companies headquartered in United States that meet our profile-completeness bar.
What is the total funding raised by Environment companies in United States?
The Environment companies in United States on this list have raised a combined $93.6B in disclosed equity funding across 1221 funded companies.
Which is the highest-funded Environment company in United States?
Madison Air is the highest-funded Environment company in United States, with $10.9B in disclosed equity funding.
How many Environment companies in United States are funded?
1221 of the 7881 Environment companies in United States on this list have disclosed at least one equity funding round.
How many Environment unicorns are there in United States?
4 Environment companies in United States on this list are valued at $1B or more.
Who are the top investors in United States Environment companies?
The most active investors in United States Environment companies on this list include OSTI, National Science Foundation, United States Department of Agriculture, DOE, Europa.
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.