DOSSIER · UPDATED 18 NOV 2025

Fourth Power

Fourth Power is an energy storage startup that uses thermal batteries. Through utility-scale thermal storage, the technique transforms renewable energy into an on-demand energy source.

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Founded
2021
Headcount
11
Open roles
0
Last raised
Series A · $19M
SECTION I · THE BRIEF

Inside Fourth Power

Brief #29470Updated 18 NOV 2025CAMBRIDGEMANUFACTURING COMPANIESSERIES A
Employbl Dossier

Fourth Power

Fourth Power is an energy storage startup that uses thermal batteries. Through utility-scale thermal storage, the technique transforms renewable energy into an on-demand energy source.

Founded
2021
Headcount
11
Open roles
0
Last raised
Series A · $19M
Section II — RestrictedMembers only
  • Tech stack (Fourth Power engineering primaries)
  • Hiring focus this quarter
  • Interview format & rubric
  • Comp bands by level
  • Decision-makers in talent
  • Recent news & moves
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LOCATIONS

Where they work

Fourth Power Headquarters Location

Cambridge, MA, 02138

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FUNDING

Capital raised

Total Amount Raised: $19,000,000

Fourth Power Funding Rounds

  • Series A

    $19,000,000

  • Series A

    $19,000,000

    Series A Investors

    DCVC
    Black Venture Capital Consortium (BVCC)
    Breakthrough Energy
Funding info provided by Diffbot.
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