Company lists · Data refreshed September 2026
Top 25 Cleantech startups based in San Francisco, United States
RevenueBase identified 71 company matches for cleantech startups associated with San Francisco, United States as of September 2026 and tracks 1,514 professional contacts across them, including 640 with verified work emails. Across the United States, New York is the largest hub for this category (102 companies); San Francisco has 71.
This list covers company matches for cleantech startups associated with San Francisco, 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 cleantech startups based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 324 contacts → | ||||
Exact match “3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 2 | 150 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 3 | 110 contacts → | ||||
Exact match “Winning in clean technologies is complex-new technologies emerge, policies shift, and it’s hard to know which opportunities will scale and which will fail.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 4 | 68 contacts → | ||||
Exact match “Renewable Properties specializes in developing and investing in small-scale utility and commercial solar energy projects throughout the United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 5 | 53 contacts → | ||||
Exact match “Linea Energy is a newly-formed Independent Power Producer aiming to change the status quo of how clean energy is developed and financed to rapidly increase the speed of deployment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 6 | 39 contacts → | ||||
Exact match “Praan is a venture-backed deep tech start-up using breakthrough patent-pending technology for filter-less capture of particulates and carbon dioxide from ambient air.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 7 | 30 contacts → | ||||
Exact match “BluePath is a leading financier of sustainable infrastructure.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 8 | 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 | |||||
| 9 | 14 contacts → | ||||
Exact match “Metrus Energy develops and finances sustainable energy projects at commercial, industrial, and institutional facilities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 10 | 13 contacts → | ||||
Exact match “Atmos is a technology company on a mission to accelerate the clean economy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 11 | 10 contacts → | ||||
Exact match “10Power is redefining international development as sustainable innovation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 12 | 8 contacts → | ||||
Exact match “Energy Resource Integration (ERI) is a private energy engineering firm founded in 2011 on the West Coast to help companies develop sustainability through energy efficiency -…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 13 | 7 contacts → | ||||
Exact match “ARC is a development, construction and program/construction management company.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 14 | 6 contacts → | ||||
Exact match “We help governments and commercial partners transform how they use energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 15 | 4 contacts → | ||||
Exact match “Build solar where it does the most good.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 16 | 4 contacts → | ||||
Exact match “We are on a mission to enable every business to be powered by clean, affordable energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match “End to end commercial energy efficiency solutions that save you time and money.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 18 | 3 contacts → | ||||
Exact match “Lovelight delivers the highest value energy efficiency and renewable energy solutions for owners, managers, and tenants of commercial and multifamily facilities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match “DERNetSoft is an innovative cleantech startup driving the digital transformation of the energy industry.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 20 | 2 contacts → | ||||
Exact match “Here’s what we’re about: distributed solar energy and storage for communities that need it most.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 21 | 2 contacts → | ||||
Exact match “Hands-on startup and product building - helping climate founders with product, gtm, scaling, and fundraising.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 22 | 1 contacts → | ||||
Exact match “We are your cleantech Go-to-Market (GTM) strike team, accelerating the success of innovative products and services for decades.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 23 | 1 contacts → | ||||
Exact match “EVOLVE architects Strategies & Solutions for the Electric Economy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “pear.ai uses advanced technology to change the way people manage and optimize their energy investments.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “Radiate is a platform that builds, funds, and scales climate technology and energy transition businesses.” 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 “cleantech startups”. 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 71 cleantech startups based in San Francisco, United States
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Cleantech startups based in San Francisco, United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 71 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 San Francisco, United States whose business descriptions match “cleantech startups” 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 640 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.
Cleantech startups by metro in the United States
- Cleantech startups in New York102
- Cleantech startups in Houston82
- Cleantech startups in Washington49
- Cleantech startups in Austin45
- Cleantech startups in Los Angeles43
- Cleantech startups in Boston39
- Cleantech startups in Chicago39
- Cleantech startups in Dallas38
- Cleantech startups in San Diego35
- Cleantech startups in Miami33
- Cleantech startups in Atlanta32
- Cleantech startups in Denver28
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 “cleantech startups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many cleantech startups are there based in San Francisco, United States?
RevenueBase identified 71 company matches for cleantech startups associated with San Francisco, 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?
3degrees Group, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most cleantech startups?
New York leads the United States with 102 company records, followed by Houston (82) and San Francisco (71).
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 640 professional contacts with verified work emails tracked across these 71 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 71 cleantech startups based in San Francisco, United States. Start with a free account, no credit card.
Download this list →Related lists
Cleantech startups by geography
- Cleantech startups based in Belo Horizonte, Brazil
- Cleantech startups based in Curitiba, Brazil
- Cleantech startups based in Fortaleza, Brazil
- Cleantech startups based in Porto Alegre, Brazil
- Cleantech startups based in Rio De Janeiro, Brazil
- Cleantech startups based in Sao Paulo, Brazil
- Cleantech startups based in Calgary, Canada
- Cleantech startups based in Toronto, Canada
- Cleantech startups based in Vancouver, Canada
- Cleantech startups based in Ahmedabad, India
- Cleantech startups based in Bangalore, India
- Cleantech startups based in Chennai, India
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Cleantech startups based in Belo Horizonte, Brazil
- Cleantech startups based in Curitiba, Brazil
- Cleantech startups based in Fortaleza, Brazil
- Cleantech startups based in Porto Alegre, Brazil
- Cleantech startups based in Rio De Janeiro, Brazil
- Cleantech startups based in Sao Paulo, Brazil
Company intelligence · public preview
Top 25 cleantech startups based in San Francisco, 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 71 matching company records for cleantech startups based in San Francisco, United States, with 1,514 tracked contacts and 640 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 cleantech startups based in San Francisco, 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 |  3degrees Group, INC3degrees.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 324 contacts → |
“3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | U.S. Energy Foundationef.org HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 150 contacts → |
“U.S.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Cleantech Groupcleantech.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 110 contacts → |
“Winning in clean technologies is complex-new technologies emerge, policies shift, and it’s hard to know which opportunities will scale and which will fail.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Renewable Propertiesrenewprop.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 68 contacts → |
“Renewable Properties specializes in developing and investing in small-scale utility and commercial solar energy projects throughout the United States.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Linea Energylineaenergy.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 53 contacts → |
“Linea Energy is a newly-formed Independent Power Producer aiming to change the status quo of how clean energy is developed and financed to rapidly increase the speed of deployment.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | PRAANpraan.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 39 contacts → |
“Praan is a venture-backed deep tech start-up using breakthrough patent-pending technology for filter-less capture of particulates and carbon dioxide from ambient air.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Bluepath Financebluepathfinance.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 30 contacts → |
“BluePath is a leading financier of sustainable infrastructure.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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. | |||||
| 9 |  Metrus Energymetrusenergy.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 14 contacts → |
“Metrus Energy develops and finances sustainable energy projects at commercial, industrial, and institutional facilities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Atmos Financialjoinatmos.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 13 contacts → |
“Atmos is a technology company on a mission to accelerate the clean economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  10power10pwr.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 10 contacts → |
“10Power is redefining international development as sustainable innovation.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Energy Resources Integration, LLCeripacific.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 8 contacts → |
“Energy Resource Integration (ERI) is a private energy engineering firm founded in 2011 on the West Coast to help companies develop sustainability through energy efficiency -…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  ARC Alternative And Renewable Constructionarc-dec.comHQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 7 contacts → |
“ARC is a development, construction and program/construction management company.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Zero Emission Advisorszeroemissionadvisors.com HQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 6 contacts → |
“We help governments and commercial partners transform how they use energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  renewables.orgrenewables.orgHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 4 contacts → |
“Build solar where it does the most good.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Vista Powervistapower.comHQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 4 contacts → |
“We are on a mission to enable every business to be powered by clean, affordable energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Ecocosm, INCecocosminc.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“End to end commercial energy efficiency solutions that save you time and money.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Lovelight Solutionslovelightsolutions.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“Lovelight delivers the highest value energy efficiency and renewable energy solutions for owners, managers, and tenants of commercial and multifamily facilities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Dernetsoftdernetsoft.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“DERNetSoft is an innovative cleantech startup driving the digital transformation of the energy industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Impact Renewable Partnersimpactrenew.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 2 contacts → |
“Here’s what we’re about: distributed solar energy and storage for communities that need it most.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Alternate Futurealternatefuture.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 2 contacts → |
“Hands-on startup and product building - helping climate founders with product, gtm, scaling, and fundraising.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Regen Groupregengroup.com HQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 1 contacts → |
“We are your cleantech Go-to-Market (GTM) strike team, accelerating the success of innovative products and services for decades.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | evolvetechnologies.aievolvetechnologies.ai HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“EVOLVE architects Strategies & Solutions for the Electric Economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  pear.aipear.aiHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“pear.ai uses advanced technology to change the way people manage and optimize their energy investments.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Radiateradiate.ecoHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Radiate is a platform that builds, funds, and scales climate technology and energy transition businesses.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 71 company matches
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Cleantech startups: 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
71 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 across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 71 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 ↗
Cleantech startups by metro in the United States
- Cleantech startups in New York102
- Cleantech startups in Houston82
- Cleantech startups in Washington49
- Cleantech startups in Austin45
- Cleantech startups in Los Angeles43
- Cleantech startups in Boston39
- Cleantech startups in Chicago39
- Cleantech startups in Dallas38
- Cleantech startups in San Diego35
- Cleantech startups in Miami33
- Cleantech startups in Atlanta32
- Cleantech startups in Denver28
Questions about this company list
What does Exact match mean for cleantech startups?
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 cleantech startups did RevenueBase find based in San Francisco, United States?
The saved snapshot records 71 matching company records, 1,514 tracked contacts and 640 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
Cleantech startups by geography
- Cleantech startups based in Belo Horizonte, Brazil
- Cleantech startups based in Curitiba, Brazil
- Cleantech startups based in Fortaleza, Brazil
- Cleantech startups based in Porto Alegre, Brazil
- Cleantech startups based in Rio De Janeiro, Brazil
- Cleantech startups based in Sao Paulo, Brazil
- Cleantech startups based in Calgary, Canada
- Cleantech startups based in Toronto, Canada
- Cleantech startups based in Vancouver, Canada
- Cleantech startups based in Ahmedabad, India
- Cleantech startups based in Bangalore, India
- Cleantech startups based in Chennai, India
Cite this list
RevenueBase Data Team. Top 25 cleantech startups based in San Francisco, United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/cleantech-startups/united-states/san-francisco.
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
- Cleantech startups based in Belo Horizonte, Brazil
- Cleantech startups based in Curitiba, Brazil
- Cleantech startups based in Fortaleza, Brazil
- Cleantech startups based in Porto Alegre, Brazil
- Cleantech startups based in Rio De Janeiro, Brazil
- Cleantech startups based in Sao Paulo, Brazil
Company intelligence · public preview
Top 25 cleantech startups based in San Francisco, United States
RevenueBase records 71 matching company records for cleantech startups based in San Francisco, United States, with 1,514 tracked contacts and 640 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 cleantech startups based in San Francisco, 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 | 3degrees Group, INC3degrees.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 324 contacts → |
“3Degrees is a leading global climate solutions provider, pioneer of environmental markets, and Certified B Corporation.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | U.S. Energy Foundationef.org HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 150 contacts → |
“U.S.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Cleantech Groupcleantech.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 110 contacts → |
“Winning in clean technologies is complex-new technologies emerge, policies shift, and it’s hard to know which opportunities will scale and which will fail.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Renewable Propertiesrenewprop.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 68 contacts → |
“Renewable Properties specializes in developing and investing in small-scale utility and commercial solar energy projects throughout the United States.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Linea Energylineaenergy.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 53 contacts → |
“Linea Energy is a newly-formed Independent Power Producer aiming to change the status quo of how clean energy is developed and financed to rapidly increase the speed of deployment.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | PRAANpraan.io HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 39 contacts → |
“Praan is a venture-backed deep tech start-up using breakthrough patent-pending technology for filter-less capture of particulates and carbon dioxide from ambient air.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Bluepath Financebluepathfinance.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 30 contacts → |
“BluePath is a leading financier of sustainable infrastructure.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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. | |||||
| 9 | Metrus Energymetrusenergy.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 14 contacts → |
“Metrus Energy develops and finances sustainable energy projects at commercial, industrial, and institutional facilities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Atmos Financialjoinatmos.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 13 contacts → |
“Atmos is a technology company on a mission to accelerate the clean economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | 10power10pwr.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 10 contacts → |
“10Power is redefining international development as sustainable innovation.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Energy Resources Integration, LLCeripacific.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 8 contacts → |
“Energy Resource Integration (ERI) is a private energy engineering firm founded in 2011 on the West Coast to help companies develop sustainability through energy efficiency -…” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | ARC Alternative And Renewable Constructionarc-dec.com HQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 7 contacts → |
“ARC is a development, construction and program/construction management company.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Zero Emission Advisorszeroemissionadvisors.com HQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 6 contacts → |
“We help governments and commercial partners transform how they use energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | renewables.orgrenewables.org HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 4 contacts → |
“Build solar where it does the most good.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Vista Powervistapower.com HQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 4 contacts → |
“We are on a mission to enable every business to be powered by clean, affordable energy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ecocosm, INCecocosminc.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“End to end commercial energy efficiency solutions that save you time and money.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Lovelight Solutionslovelightsolutions.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“Lovelight delivers the highest value energy efficiency and renewable energy solutions for owners, managers, and tenants of commercial and multifamily facilities.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Dernetsoftdernetsoft.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“DERNetSoft is an innovative cleantech startup driving the digital transformation of the energy industry.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Impact Renewable Partnersimpactrenew.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 2 contacts → |
“Here’s what we’re about: distributed solar energy and storage for communities that need it most.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Alternate Futurealternatefuture.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 2 contacts → |
“Hands-on startup and product building - helping climate founders with product, gtm, scaling, and fundraising.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Regen Groupregengroup.com HQ: San Francisco, United StatesReported employees: 1-10 | San Francisco, United States | 1-10 | Exact match | 1 contacts → |
“We are your cleantech Go-to-Market (GTM) strike team, accelerating the success of innovative products and services for decades.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | evolvetechnologies.aievolvetechnologies.ai HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“EVOLVE architects Strategies & Solutions for the Electric Economy.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | pear.aipear.ai HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“pear.ai uses advanced technology to change the way people manage and optimize their energy investments.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Radiateradiate.eco HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“Radiate is a platform that builds, funds, and scales climate technology and energy transition businesses.” Recorded description excerpt · September 19, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 71 company matches
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Cleantech startups: 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
71 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 across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 71 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 ↗
Cleantech startups by metro in the United States
- Cleantech startups in New York102
- Cleantech startups in Houston82
- Cleantech startups in Washington49
- Cleantech startups in Austin45
- Cleantech startups in Los Angeles43
- Cleantech startups in Boston39
- Cleantech startups in Chicago39
- Cleantech startups in Dallas38
- Cleantech startups in San Diego35
- Cleantech startups in Miami33
- Cleantech startups in Atlanta32
- Cleantech startups in Denver28
Questions about this company list
What does Exact match mean for cleantech startups?
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 cleantech startups did RevenueBase find based in San Francisco, United States?
The saved snapshot records 71 matching company records, 1,514 tracked contacts and 640 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.
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Cite this list
RevenueBase Data Team. Top 25 cleantech startups based in San Francisco, United States. Snapshot: September 19, 2026. https://revenuebase.ai/companies/cleantech-startups/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Cleantech startups based in Belo Horizonte, Brazil
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