United States · Investor

Cleantech Open

Last cheque observed Sep 2026; 165 cheques on record.

Deploying nowAcceleratorWebsite unconfirmed

Pre-seedSeedSeries ABatterySdgRecycling

Deploying now
41%of best year17cheques in 12 months, 165 on record
Since the last cheque55days00hrs00min00sec
Median round$1.1MRounds led0 of 165Sole investor30 roundsMostly inUnited States, 87%
Pitch Cleantech Open

Cleantech Open highlights

  1. 01

    17 cheques in the last 12 months

  2. 02

    Mostly Venture and Grant: 60% of its rounds

  3. 03

    Sole investor in 30 rounds, median $794K

What they do

Type
Accelerator (from a list, unverified)
Cheque size
Not stated
Stages
Pre-seedSeedSeries A
Sectors
BatterySdgRecycling
Based in
Los Angeles, United States
Cold pitches
Accepted

A website was listed for this organisation, but we could not confirm it belongs to the firm that wrote these cheques. Either the site never mentions them, or it turned out to be a different company sharing the name. We show neither it nor anything read from it. Tell us the right one.

The record

Every round we can evidence, newest first165 appearances

  1. 2026

    14 rounds

  2. Sept
    Moon Five TechnologiesDebt · US$300KWith 2 others
  3. Jul
    Arculus SolutionsSeed · US$2.0MWith 2 others
  4. Jun
    SwitchVenture · US · TechStartups$10MWith 4 others
  5. Jun
    AndlucaVenture · USUndisclosedWith 2 others
  6. Jun
    Kara WaterCrowdfunding · US$794KSole investor
  7. Apr
    YouSolarCrowdfunding · US$443KWith 2 others
  8. Apr
    StorEn TechnologiesCrowdfunding · US$585KWith 1 other
  9. Mar
    ScalvySeries A · US$14MWith 1 other
  10. Mar
    Clean Valley Bio-filtration TechnologiesDebt · CA$4.0MWith 2 others
  11. Mar
    RePurpose EnergyCrowdfunding · US$268KWith 3 others
  12. Mar
    MicroEra PowerGrant · US$25KWith 5 others
  13. Feb
    BlueTraceSeed · US$1.3MWith 1 other
  14. Feb
    Sinergy FlowSeed · IT$8.3MWith 2 others
  15. Jan
    Verde TechnologiesVenture · US$3.0MWith 1 other
  16. 2025

    25 rounds

  17. Nov
    NativusUS$95KWith 1 other
  18. Nov
    Switched SourceSeed · US$2.6MWith 2 others
  19. Nov
    Kara WaterCrowdfunding · US$712KSole investor
  20. Sept
    MicroEra PowerGrant · US$250KWith 4 others
  21. Aug
    RenewCO2Seed · US$2.0MWith 3 others
  22. Aug
    EnzincVenture · USUndisclosedWith 1 other
  23. Aug
    RenewCO2Seed · US$4.2MWith 3 others
  24. Aug
    EarthEnVenture · USUndisclosedWith 4 others
  25. Aug
    DTE MaterialsVenture · USUndisclosedWith 1 other
  26. Jun
    ByFusion GlobalVenture · USUndisclosedWith 4 others
  27. May
    REplaceSeed · TechStartups$2.1MWith 4 others
  28. May
    Leeta MaterialsSeed · US$5.6MSole investor
  29. May
    Flower TurbinesCrowdfunding · US$1.3MWith 3 others
  30. May
    Kite MagneticsSeed · AU$2.3MWith 2 others
  31. May
    Radical PlasticsVenture · US$1.0MWith 3 others
  32. May
    GencoresGrant · US$100KWith 4 others
  33. Apr
    GRAIN EcosystemSeed · US$880KWith 1 other
  34. Apr
    Emulate EnergySeries A · SE$5.5MSole investor
  35. Apr
    Moon Five TechnologiesGrant · US$3.4MWith 1 other
  36. Mar
    Capro-XVenture · USUndisclosedWith 2 others
  37. Feb
    SimusolarVenture · USUndisclosedWith 1 other
  38. Feb
    MESPACSeed · IT$1.5MWith 2 others
  39. Feb
    Ecotone RenewablesCrowdfunding · US$208KWith 2 others
  40. Jan
    LinebirdVenture · USUndisclosedWith 2 others
  41. Jan
    Muon VisionSeed · US$2.5MWith 2 others
  42. 2024

    40 rounds

  43. Dec
    AmatecGrant · US$240KWith 3 others

An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.

The team

We hold 2 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.

Who they invest alongside

The investors most often in the same rounds as Cleantech Open. A count of rooms they were both in, not a relationship either has claimed.

Recently backed

The latest companies Cleantech Open put money into.

Mentioned on podcasts

Episodes that name Cleantech Open in their description, not their title.

Quick answers about Cleantech Open

What does Cleantech Open invest in?

Cleantech Open invests most often at Venture and Grant (60% of the rounds on record), in sectors such as Battery, Sdg and Recycling.

How active is Cleantech Open?

165 investments on record, 17 of them in the last 12 months. The most recent was in Sept 2026.

What has Cleantech Open invested in recently?

Its most recent investments on record: Moon Five Technologies (Debt, Sept 2026), Arculus Solutions (Seed, Jul 2026) and Switch (Venture, Jun 2026).

How big are Cleantech Open's cheques?

The median round it joins is $1.1M.

Does Cleantech Open lead rounds?

Rarely, if at all: none of its 165 investments on record names it as the lead.

Where does Cleantech Open invest?

Most of the companies it backs are in the United States (87%) and Italy (5%).

Is Cleantech Open investing now?

Yes: it is actively investing, with 17 investments in the last 12 months.

Who does Cleantech Open invest alongside?

Most often National Science Foundation (36 rounds together), US Department of Energy (18 rounds together) and MassChallenge (13 rounds together).

Raising now?

Find the investors who back rounds like yours, and keep every conversation on one fundraising board.

Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it