United Kingdom · Growth startup

Who invested in SSE

8 rounds we have observed, with the 0 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

CleantechEnergy

Raised 5 months ago

Funding summaryUpdated 15 Nov 2026

$2.7Braised across 8 rounds since 2023, from 8 sources

$2.6BGrowth
Latest round
Round, $6.2MJun 2026
Biggest round
$2.6BGrowth · Nov 2025
Investors
0
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2023202420252026
$1.7MRound$146KRound$11MRound$145KRound$22MRound$40MRound$2.6BGrowth$6.2MRound
First round
Round, $1.7M
Jan 2023
Biggest round
$2.6B
Growth · Nov 2025
Usual gap between rounds
5 months
the median of 7

The rounds

  1. Jun 2026
    Round$6.2M

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

  2. Nov 2025
    Growth$2.6B

    No investor was named in the report.

    Reported by Ventureburn

  3. Jun 2025
    Round$40M

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

  4. Sept 2024
    Round$22M

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

  5. Jul 2024
    Round$145K

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

  6. Oct 2023
    Round$11M

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

  7. Jun 2023
    Round$146K

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

  8. Jan 2023
    Round$1.7M

    No investor was named in the report.

    Shares issued, filed with Companies House (SH01); no report of this raise yet

Funding filed with regulators

SSE filed 31 raises, $231M in all. Filings say how much was sold and to how many investors; they never name the investors.

  1. Jun 2026$6.2MUK share allotment
  2. Apr 2026$204KUK share allotment
  3. Mar 2026$207KUK share allotment
  4. Feb 2026$409KUK share allotment
  5. Jan 2026$149MUK share allotment
  6. Dec 2025$545KUK share allotment
  7. Nov 2025Amount not statedUK share allotment
  8. Sept 2025$34MUK share allotment
  9. Aug 2025$205KUK share allotment
  10. Jul 2025$198KUK share allotment
  11. Jun 2025$4.7MUK share allotment
  12. Apr 2025$339KUK share allotment
  13. Mar 2025$239KUK share allotment
  14. Feb 2025$339KUK share allotment
  15. Jan 2025$717KUK share allotment
  16. Dec 2024$261KUK share allotment
  17. Nov 2024$530KUK share allotment
  18. Oct 2024$20MUK share allotment
  19. Sept 2024$217KUK share allotment
  20. Jul 2024$145KUK share allotment
  21. Mar 2024$173KUK share allotment
  22. Feb 2024$128KUK share allotment
  23. Jan 2024$414KUK share allotment
  24. Dec 2023$413KUK share allotment
  25. Nov 2023$821KUK share allotment
  26. Oct 2023$9.0MUK share allotment
  27. Jun 2023$146KUK share allotment
  28. Apr 2023$202KUK share allotment
  29. Mar 2023$311KUK share allotment
  30. Feb 2023$415KUK share allotment
  31. Jan 2023$787KUK share allotment

Founders and team

From SSE's own website: 11 on the team.

  • Barry O’ReganTeam
  • Hixonia NyasuluTeam
  • John BasonTeam
  • John StewartTeam
  • Maarten WetselaarTeam
  • Martin PibworthTeam
  • Rhian KellyTeam
  • Sam PeacockTeam
  • Sir John ManzoniTeam
  • Tony CockerTeam
  • Tracey WoodTeam

Quick answers about SSE

How much has SSE raised?

SSE has raised $2.7B across 8 rounds since 2023.

When did SSE last raise?

SSE's most recent round, $6.2M, was in Jun 2026.

What was SSE's biggest round?

SSE's largest round on record is $2.6B (Growth), in Nov 2025.

What stage is SSE at?

SSE's latest named round is a Growth, in Nov 2025.

Where is SSE based?

SSE is based in the United Kingdom.

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