Big round · 3 August 2026

B

Base Power raises $1.0B Series D led by Valor Equity Partners

By Millionrounds ResearchPublished 16 September 2026

Base Power, based in United States, has raised $1.0B in a Series D led by Valor Equity Partners, Ribbit Capital and Addition, announced on 3 August 2026. 11 other investors joined. It is the 42nd largest equity round we recorded in the twelve months to that date, and the 7th largest Series D of 70. The median Series D over the same period was $160M, so this one is 6.3 times that. Its previous round on record was a Series C of $1.0B in October 2025, 9 months earlier.

Raised$1.0B2 sources reported it
StageSeries D2 earlier rounds on record
Investors154 named as lead
Where USUnited States

Energy

How big is it?

Against every equity round we recorded in the twelve months to 3 August 2026. Ranks count companies, so the same raise reported twice is counted once.

#42equity round of the last twelve months
#7Series D of 70 in that time
#25round in United States, of 1,080
This round$1.0B
Median Series D$160M

6.3 times the median Series D of the last twelve months.

Who invested

Also in the round

Funding history

  1. August 2026Series D$1.0B
  2. October 2025Series C$1.0B
  3. April 2025Series B$200M

$2.2B raised across the 3 rounds we hold.

Reported by

  1. TechCrunch3 August
  2. Ventureburn3 August

The round's figures come from these reports; each link opens the original.

Other big rounds that week

Firmus Technologies$2.0B GrowthLumilens$700M Series CHadrian$1.4B GrowthMoove$250M Series CICEYE$1.2B Series FHappyRobot$150M Series C
The companyBase Power on Millionrounds→Weekly roundupWeek of 3 August→Monthly roundupAugust 2026→