Company lists · Data refreshed September 2026
Top 25 Climate tech accelerators based in the United States
RevenueBase identified 217 company matches for climate tech accelerators associated with the United States as of September 2026 and tracks 2,117 professional contacts across them, including 791 with verified work emails. New York is the largest hub.
This list covers company matches for climate tech accelerators associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest climate tech accelerators based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 149 contacts → | ||||
Exact match “The Massachusetts Clean Energy Center is a state economic development agency dedicated to accelerating the growth of the clean energy and climatetech sector across the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 136 contacts → | ||||
Exact match “New Energy Nexus (NEX) is the world's leading ecosystem of funds and accelerators supporting diverse clean energy entrepreneurs to thrive, from emerging tech through to clean…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 132 contacts → | ||||
Exact match “The Cleantech Open runs the world's largest cleantech accelerator.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 94 contacts → | ||||
Exact match “Greentown Labs is a 501(c)(3) nonprofit accelerating climatetech innovation for the planet, people, and prosperity.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 80 contacts → | ||||
Exact match “Syzygy Plasmonics is a technology company decarbonizing chemical production with its proprietary light-driven reactor technology.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 79 contacts → | ||||
Exact match “Infinium is reimagining how the world powers, moves, and computes.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 58 contacts → | ||||
Exact match “We work with entrepreneurs to refine ideas, attract talent, access capital, and accelerate growth.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 57 contacts → | ||||
Exact match “Decarbonizing the World's Legacy Buildings Kelvin’s technology reduces wasted energy, saves money, and enables pinpoint temperature control for apartments in legacy buildings.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 9 | 54 contacts → | ||||
Exact match “Sealed is a climate tech company on a mission to stop home energy waste by enabling contractors to install more home weatherization and electrification projects and grow their…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 54 contacts → | ||||
Exact match “Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 37 contacts → | ||||
Exact match “Partnered with MIT and Greentown Labs, our mission is to train and develop the next generation of energy transition and climate tech entrepreneurs from some of the leading Texas…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 34 contacts → | ||||
Exact match “BRITE is an innovation-first ecosystem advancing the clean energy economy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 27 contacts → | ||||
Exact match “At G2 Venture Partners, we’ve been investing in climate-tech for over 15 years, seeking out and partnering with companies at their inflection point that are changing how the world…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 25 contacts → | ||||
Exact match “MCJ is an early-stage fund for the energy and industry transition and the inevitable impacts of climate change.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 22 contacts → | ||||
Exact match “The Radicle Development Center is a new approach to building out and scaling up solutions in the ClimateTech & HardTech space.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 20 contacts → | ||||
Exact match “ClimateHaven is a climate tech incubator for world-class innovators and entrepreneurs.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 19 contacts → | ||||
Exact match “Factor E was founded in 2013, to accelerate the impact of innovation on economies, communities, and the environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 18 contacts → | ||||
Exact match “Capital for Climate (C4C) is accelerating capital deployment to climate solutions required to achieve a 1.5°C degree outcome.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 17 contacts → | ||||
Exact match “Evergreen Climate Innovations, formerly Clean Energy Trust, provides catalytic capital and support to entrepreneurs and startups that bring impactful climate technologies to…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 17 contacts → | ||||
Exact match “Joules is a non-profit organization that supports early-stage climate tech startups in the Southeast and beyond.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 15 contacts → | ||||
Exact match “Prelude Ventures invests in and supports early-stage startups with the greatest potential to mitigate climate change.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 15 contacts → | ||||
Exact match “ETCH’s revolutionary decarbonization technology delivers unrivaled economic value and versatility that will accelerate the clean energy transition.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 15 contacts → | ||||
Exact match “Thalo Labs: Climate Tech for the World We Live In” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 15 contacts → | ||||
Exact match “CleanLeap is on a journey to champion sustainable innovation, partnering with ClimateLaunchpad as its representative in the USA.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 15 contacts → | ||||
Exact match “Halliburton Labs is an energy venture catalyst that collaborates with hard-tech ventures to propel their journey from innovation to industrial scale.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “climate tech accelerators”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 217 climate tech accelerators based in the United States
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Climate tech accelerators based in the United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 217 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “climate tech accelerators” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 791 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “climate tech accelerators”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many climate tech accelerators are there based in the United States?
RevenueBase identified 217 company matches for climate tech accelerators associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Massachusetts Clean Energy Center tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most climate tech accelerators?
New York leads with 25 company records, followed by San Francisco (20) and Houston (12).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 791 professional contacts with verified work emails tracked across these 217 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
Ready to reach these companies? Verified emails and direct dials for all 217 climate tech accelerators based in the United States. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- Lists by location
- Lists A-Z
- New lists
- Climate tech accelerators based in Canada
- Climate tech accelerators based in France
- Climate tech accelerators based in Germany
- Climate tech accelerators based in India
- Climate tech accelerators based in the United Kingdom
- AI companies based in the United States
Company intelligence · public preview
Top 25 climate tech accelerators based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 217 matching company records for climate tech accelerators based in the United States, with 2,117 tracked contacts and 791 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 climate tech accelerators based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Massachusetts Clean Energy Centermasscec.comHQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 149 contacts → |
“The Massachusetts Clean Energy Center is a state economic development agency dedicated to accelerating the growth of the clean energy and climatetech sector across the…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  NEW Energy Nexusnewenergynexus.comHQ: Berkeley, CA, United StatesReported employees: 51-200 | Berkeley, CA, United States | 51-200 | Exact match | 136 contacts → |
“New Energy Nexus (NEX) is the world's leading ecosystem of funds and accelerators supporting diverse clean energy entrepreneurs to thrive, from emerging tech through to clean…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Cleantech Opencleantechopen.orgHQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 132 contacts → |
“The Cleantech Open runs the world's largest cleantech accelerator.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Greentown Labsgreentownlabs.comHQ: Somerville, MA, United StatesReported employees: 51-200 | Somerville, MA, United States | 51-200 | Exact match | 94 contacts → |
“Greentown Labs is a 501(c)(3) nonprofit accelerating climatetech innovation for the planet, people, and prosperity.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Syzygy Plasmonicsplasmonics.techHQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 80 contacts → |
“Syzygy Plasmonics is a technology company decarbonizing chemical production with its proprietary light-driven reactor technology.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Infiniuminfiniumco.comHQ: Sacramento, CA, United StatesReported employees: 51-200 | Sacramento, CA, United States | 51-200 | Exact match | 79 contacts → |
“Infinium is reimagining how the world powers, moves, and computes.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Basistechbasistech.comHQ: Somerville, MA, United StatesReported employees: 51-200 | Somerville, MA, United States | 51-200 | Exact match | 58 contacts → |
“We work with entrepreneurs to refine ideas, attract talent, access capital, and accelerate growth.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Kelvinkel.vinHQ: Brooklyn, United StatesReported employees: 11-50 | Brooklyn, United States | 11-50 | Exact match | 57 contacts → |
“Decarbonizing the World's Legacy Buildings Kelvin’s technology reduces wasted energy, saves money, and enables pinpoint temperature control for apartments in legacy buildings.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Sealedsealed.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 54 contacts → |
“Sealed is a climate tech company on a mission to stop home energy waste by enabling contractors to install more home weatherization and electrification projects and grow their…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Clean Energy Venturescleanenergyventures.comHQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 54 contacts → |
“Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 37 contacts → |
“Partnered with MIT and Greentown Labs, our mission is to train and develop the next generation of energy transition and climate tech entrepreneurs from some of the leading Texas…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Brite Energy Innovatorsbrite.org HQ: Warren, OH, United StatesReported employees: 11-50 | Warren, OH, United States | 11-50 | Exact match | 34 contacts → |
“BRITE is an innovation-first ecosystem advancing the clean energy economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  G2 Venture Partnersg2vp.comHQ: Portola Valley, CA, United StatesReported employees: 11-50 | Portola Valley, CA, United States | 11-50 | Exact match | 27 contacts → |
“At G2 Venture Partners, we’ve been investing in climate-tech for over 15 years, seeking out and partnering with companies at their inflection point that are changing how the world…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  MCJmcj.vcHQ: Boston, MA, United StatesReported employees: 1-10 | Boston, MA, United States | 1-10 | Exact match | 25 contacts → |
“MCJ is an early-stage fund for the energy and industry transition and the inevitable impacts of climate change.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Radicle Development Centerradicle.build HQ: Malvern, PA, United StatesReported employees: 11-50 | Malvern, PA, United States | 11-50 | Exact match | 22 contacts → |
“The Radicle Development Center is a new approach to building out and scaling up solutions in the ClimateTech & HardTech space.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Climatehavenclimatehaven.tech HQ: New Haven, CT, United StatesReported employees: 1-10 | New Haven, CT, United States | 1-10 | Exact match | 20 contacts → |
“ClimateHaven is a climate tech incubator for world-class innovators and entrepreneurs.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Factor Efactore.com HQ: Fort Collins, CO, United StatesReported employees: 11-50 | Fort Collins, CO, United States | 11-50 | Exact match | 19 contacts → |
“Factor E was founded in 2013, to accelerate the impact of innovation on economies, communities, and the environment.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Capital For Climatecapitalforclimate.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 18 contacts → |
“Capital for Climate (C4C) is accelerating capital deployment to climate solutions required to achieve a 1.5°C degree outcome.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Evergreen Climate Innovationsevergreeninno.orgHQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 17 contacts → |
“Evergreen Climate Innovations, formerly Clean Energy Trust, provides catalytic capital and support to entrepreneurs and startups that bring impactful climate technologies to…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Joules Acceleratorjoulesaccelerator.com HQ: Charlotte, NC, United StatesReported employees: 1-10 | Charlotte, NC, United States | 1-10 | Exact match | 17 contacts → |
“Joules is a non-profit organization that supports early-stage climate tech startups in the Southeast and beyond.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Prelude Venturespreludeventures.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 15 contacts → |
“Prelude Ventures invests in and supports early-stage startups with the greatest potential to mitigate climate change.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Etch, INCetchmaterials.com HQ: Baltimore, MD, United StatesReported employees: 1-10 | Baltimore, MD, United States | 1-10 | Exact match | 15 contacts → |
“ETCH’s revolutionary decarbonization technology delivers unrivaled economic value and versatility that will accelerate the clean energy transition.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Thalo Labsthalolabs.comHQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 15 contacts → |
“Thalo Labs: Climate Tech for the World We Live In” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cleanleapcleanleap.org HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 15 contacts → |
“CleanLeap is on a journey to champion sustainable innovation, partnering with ClimateLaunchpad as its representative in the USA.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Halliburton Labshalliburtonlabs.comHQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 15 contacts → |
“Halliburton Labs is an energy venture catalyst that collaborates with hard-tech ventures to propel their journey from innovation to industrial scale.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 217 company matches
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Climate tech accelerators: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
217 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 217 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for climate tech accelerators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many climate tech accelerators did RevenueBase find based in the United States?
The saved snapshot records 217 matching company records, 2,117 tracked contacts and 791 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Climate tech accelerators by geography
Cite this list
RevenueBase Data Team. Top 25 climate tech accelerators based in the United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/climate-tech-accelerators/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Climate tech accelerators based in Canada
- Climate tech accelerators based in France
- Climate tech accelerators based in Germany
- Climate tech accelerators based in India
- Climate tech accelerators based in the United Kingdom
- AI companies based in the United States
Company intelligence · public preview
Top 25 climate tech accelerators based in the United States
RevenueBase records 217 matching company records for climate tech accelerators based in the United States, with 2,117 tracked contacts and 791 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 19, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 climate tech accelerators based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Massachusetts Clean Energy Centermasscec.com HQ: Boston, MA, United StatesReported employees: 51-200 | Boston, MA, United States | 51-200 | Exact match | 149 contacts → |
“The Massachusetts Clean Energy Center is a state economic development agency dedicated to accelerating the growth of the clean energy and climatetech sector across the…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | NEW Energy Nexusnewenergynexus.com HQ: Berkeley, CA, United StatesReported employees: 51-200 | Berkeley, CA, United States | 51-200 | Exact match | 136 contacts → |
“New Energy Nexus (NEX) is the world's leading ecosystem of funds and accelerators supporting diverse clean energy entrepreneurs to thrive, from emerging tech through to clean…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Cleantech Opencleantechopen.org HQ: Los Angeles, CA, United StatesReported employees: 11-50 | Los Angeles, CA, United States | 11-50 | Exact match | 132 contacts → |
“The Cleantech Open runs the world's largest cleantech accelerator.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Greentown Labsgreentownlabs.com HQ: Somerville, MA, United StatesReported employees: 51-200 | Somerville, MA, United States | 51-200 | Exact match | 94 contacts → |
“Greentown Labs is a 501(c)(3) nonprofit accelerating climatetech innovation for the planet, people, and prosperity.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Syzygy Plasmonicsplasmonics.tech HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 80 contacts → |
“Syzygy Plasmonics is a technology company decarbonizing chemical production with its proprietary light-driven reactor technology.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Infiniuminfiniumco.com HQ: Sacramento, CA, United StatesReported employees: 51-200 | Sacramento, CA, United States | 51-200 | Exact match | 79 contacts → |
“Infinium is reimagining how the world powers, moves, and computes.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Basistechbasistech.com HQ: Somerville, MA, United StatesReported employees: 51-200 | Somerville, MA, United States | 51-200 | Exact match | 58 contacts → |
“We work with entrepreneurs to refine ideas, attract talent, access capital, and accelerate growth.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Kelvinkel.vin HQ: Brooklyn, United StatesReported employees: 11-50 | Brooklyn, United States | 11-50 | Exact match | 57 contacts → |
“Decarbonizing the World's Legacy Buildings Kelvin’s technology reduces wasted energy, saves money, and enables pinpoint temperature control for apartments in legacy buildings.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sealedsealed.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 54 contacts → |
“Sealed is a climate tech company on a mission to stop home energy waste by enabling contractors to install more home weatherization and electrification projects and grow their…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Clean Energy Venturescleanenergyventures.com HQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 54 contacts → |
“Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Houston, TX, United StatesReported employees: Not recorded | Houston, TX, United States | Not recorded | Exact match | 37 contacts → |
“Partnered with MIT and Greentown Labs, our mission is to train and develop the next generation of energy transition and climate tech entrepreneurs from some of the leading Texas…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Brite Energy Innovatorsbrite.org HQ: Warren, OH, United StatesReported employees: 11-50 | Warren, OH, United States | 11-50 | Exact match | 34 contacts → |
“BRITE is an innovation-first ecosystem advancing the clean energy economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | G2 Venture Partnersg2vp.com HQ: Portola Valley, CA, United StatesReported employees: 11-50 | Portola Valley, CA, United States | 11-50 | Exact match | 27 contacts → |
“At G2 Venture Partners, we’ve been investing in climate-tech for over 15 years, seeking out and partnering with companies at their inflection point that are changing how the world…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | MCJmcj.vc HQ: Boston, MA, United StatesReported employees: 1-10 | Boston, MA, United States | 1-10 | Exact match | 25 contacts → |
“MCJ is an early-stage fund for the energy and industry transition and the inevitable impacts of climate change.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Radicle Development Centerradicle.build HQ: Malvern, PA, United StatesReported employees: 11-50 | Malvern, PA, United States | 11-50 | Exact match | 22 contacts → |
“The Radicle Development Center is a new approach to building out and scaling up solutions in the ClimateTech & HardTech space.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Climatehavenclimatehaven.tech HQ: New Haven, CT, United StatesReported employees: 1-10 | New Haven, CT, United States | 1-10 | Exact match | 20 contacts → |
“ClimateHaven is a climate tech incubator for world-class innovators and entrepreneurs.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Factor Efactore.com HQ: Fort Collins, CO, United StatesReported employees: 11-50 | Fort Collins, CO, United States | 11-50 | Exact match | 19 contacts → |
“Factor E was founded in 2013, to accelerate the impact of innovation on economies, communities, and the environment.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Capital For Climatecapitalforclimate.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 18 contacts → |
“Capital for Climate (C4C) is accelerating capital deployment to climate solutions required to achieve a 1.5°C degree outcome.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Evergreen Climate Innovationsevergreeninno.org HQ: Chicago, IL, United StatesReported employees: 1-10 | Chicago, IL, United States | 1-10 | Exact match | 17 contacts → |
“Evergreen Climate Innovations, formerly Clean Energy Trust, provides catalytic capital and support to entrepreneurs and startups that bring impactful climate technologies to…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Joules Acceleratorjoulesaccelerator.com HQ: Charlotte, NC, United StatesReported employees: 1-10 | Charlotte, NC, United States | 1-10 | Exact match | 17 contacts → |
“Joules is a non-profit organization that supports early-stage climate tech startups in the Southeast and beyond.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Prelude Venturespreludeventures.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 15 contacts → |
“Prelude Ventures invests in and supports early-stage startups with the greatest potential to mitigate climate change.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Etch, INCetchmaterials.com HQ: Baltimore, MD, United StatesReported employees: 1-10 | Baltimore, MD, United States | 1-10 | Exact match | 15 contacts → |
“ETCH’s revolutionary decarbonization technology delivers unrivaled economic value and versatility that will accelerate the clean energy transition.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Thalo Labsthalolabs.com HQ: New York, NY, United StatesReported employees: 1-10 | New York, NY, United States | 1-10 | Exact match | 15 contacts → |
“Thalo Labs: Climate Tech for the World We Live In” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Cleanleapcleanleap.org HQ: United StatesReported employees: 11-50 | United States | 11-50 | Exact match | 15 contacts → |
“CleanLeap is on a journey to champion sustainable innovation, partnering with ClimateLaunchpad as its representative in the USA.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Halliburton Labshalliburtonlabs.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 15 contacts → |
“Halliburton Labs is an energy venture catalyst that collaborates with hard-tech ventures to propel their journey from innovation to industrial scale.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 217 company matches
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Climate tech accelerators: dataset insights
September 19, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
217 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 217 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 19, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for climate tech accelerators?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many climate tech accelerators did RevenueBase find based in the United States?
The saved snapshot records 217 matching company records, 2,117 tracked contacts and 791 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 19, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Climate tech accelerators by geography
Cite this list
RevenueBase Data Team. Top 25 climate tech accelerators based in the United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/climate-tech-accelerators/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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