Refolk
BlogSign in

Top Series A Climate tech companies

Companies decarbonising power, transport, agriculture, and industry. Filtered to companies whose latest disclosed round is Series A.

Built from a search like: “Top Series A Climate tech companies”

Ranked by current headcount across Series A Climate tech companies. Refreshed daily.

  1. 1
    LONGi Solar· China
    • Series A
    • 2k employees
    • Founded 2000
  2. 2
    SMA Solar· Sandershausen, Hesse, Germany
    • Series A
    • 2k employees
    • Founded 2023
  3. 3
    Red Ambiental· Monterrey, Nuevo León, Mexico
    • Series A
    • 802 employees
    • Founded 1997
  4. 4
    GameChange Solar· Norwalk, Connecticut, United States
    • Series A
    • 477 employees
    • Founded 2012
  5. 5
    Musa· São Paulo, São Paulo, Brazil
    • Series A
    • 342 employees
    • Founded 2020
  6. 6
    Solar Panda· Kenya
    • Series A
    • 321 employees
    • Founded 2017
  7. 7
    WeVOIS Labs Pvt. Ltd.· Jaipur, Rajasthan, India
    • Series A
    • 232 employees
  8. 8
    Quatt· Amsterdam, North Holland, Netherlands
    • Series A
    • 213 employees
    • Founded 2021
  9. 9
    Hello Watt· Paris, Île-de-France, France
    • Series A
    • 211 employees
    • Founded 2017
  10. 10
    gridX· Munich, Bavaria, Germany
    • Series A
    • 200 employees
    • Founded 2016
  11. 11
    GDI· Rochester, New York, United States
    • Series A
    • 194 employees
    • Founded 2009
  12. 12
    44.01· London, England, United Kingdom
    • Series A
    • 167 employees
    • Founded 2020
  13. 13
    Spire Solar· The Hague, South Holland, Netherlands
    • Series A
    • 159 employees
    • Founded 1969
  14. 14
    REDEX· Singapore, Singapore
    • Series A
    • 156 employees
    • Founded 2018
  15. 15
    Clear Water Services· Everett, Washington, United States
    • Series A
    • 127 employees
    • Founded 1998
  16. 16
    Pi Green Innovations Pvt. Ltd.· Khed, Maharashtra, India
    • Series A
    • 119 employees
    • Founded 2019
  17. 17
    Smappee· Harelbeke, Flemish Region, Belgium
    • Series A
    • 116 employees
    • Founded 2012
  18. 18
    Recycleye· London, England, United Kingdom
    • Series A
    • 110 employees
    • Founded 2019
  19. 19
    AMRUT ENERGY PVT LTD· Ahmedabad, Gujarat, India
    • Series A
    • 108 employees
    • Founded 2014
  20. 20
    Rekosistem· Gambir, Jakarta, Indonesia
    • Series A
    • 105 employees
    • Founded 2021
  21. 21
    ACE BATTERY CO., LTD.· Shenzhen, Guangdong, China
    • Series A
    • 100 employees
    • Founded 2014
  22. 22
    Land Life· Amsterdam, North Holland, Netherlands
    • Series A
    • 94 employees
    • Founded 2013
  23. 23
    AmpereHour Energy· Haveli, Maharashtra, India
    • Series A
    • 93 employees
    • Founded 2017
  24. 24
    Indra· Bhiwandi, Maharashtra, India
    • Series A
    • 92 employees
    • Founded 2018
  25. 25
    MOMBAK· Agudos, São Paulo, Brazil
    • Series A
    • 87 employees
    • Founded 2021

Find engineers and founders at Series A Climate tech companies

Series A Climate tech companies are some of the most active hirers in the market. The list above ranks the largest Climate tech companies whose latest disclosed round is Series A, by current headcount, drawn from public LinkedIn and Crunchbase records. Across 201matching companies, you’ll find senior engineers, founding designers, and operators worth tracking.

Companies at this stage in Climate tech share a profile: a working product, fresh capital, and a hiring plan that wants senior people yesterday. Looking at headcount, last round, and HQ side by side gives you a quick read on where Climate tech talent is concentrating right now.

Refolk converts this list into a search. Ask for “Series A Climate tech founders hiring senior engineers” or “design leads at Series A Climate tech companies” and Refolk returns a fresh ranked shortlist with the sources behind each match.

How this list is built

Refolk pulled Climate tech companies whose latest disclosed funding round is Series A from public LinkedIn and Crunchbase records, ranked them by current employee count, and kept those with at least 5 employees. The list refreshes once a day.

Last refreshed: Thu, 07 May 2026 06:51:52 GMT

Need an even more specific search?

Refolk runs natural-language searches across LinkedIn, GitHub, and the open web. Try one of these:

Related lists

See all company lists.

Or zoom out

Slice this list a different way