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Certain Energy raises £10M in Series A funding to commercialise its manganese flow battery technology, led by British Business Bank.

PRIVATEAug 26, 2026

Amount Raised

£10 Million

Round Type

Series A

United KingdomEnergyOil And GasRenewable EnergySolarEnergy Storage

Investors

Catalytic Capital for Climate and HealthCentricaCeres Power HoldingsTemasek Trust's Catalytic Capital For Climate And Health (C3 H)British Business Bank

Description

Certain Energy has raised £10 million in Series A funding to develop its manganese flow battery technology for grid-scale deployment. The funding aims to help stabilize electricity grids and reduce reliance on gas-fired peaker plants. The round was led by the British Business Bank with participation from other investors. This funding will support the company's mission to enhance renewable energy storage solutions.

Who else raised in Energy and Oil And Gas around the same time

Companies in the same sectors as Certain Energy that raised within 45 days of this round, from Fundz verified event records.

  • TXNM Energy raised $400M (Debt Financing) on September 2, 2026.
  • NOX Energy raised $3.4M (Seed) on September 30, 2026.
  • SMT Energy raised $268M on September 25, 2026.
  • CIOC Energy raised $3.4M (Seed) on September 23, 2026.
  • TAR raised $120M (Series A) on September 10, 2026.
  • Rebaba raised $4.6M (Seed) on September 9, 2026.

Who to call at Certain Energy, and when

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Company Information

Company

Certain Energy

Location

United Kingdom

About

Certain Energy is a British long-duration energy storage company focused on developing manganese flow battery technology for grid-scale deployment. Founded in 2017 as a spin-off from Imperial College London, the company aims to stabilize electricity grids and reduce reliance on gas-fired plants by providing long-duration energy storage solutions. Their technology is designed to achieve high efficiency and lower costs compared to conventional storage systems. Certain Energy is actively working on expanding its research capabilities and developing a supply chain for commercial deployment.

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Funding Insights

What this usually means
Typical timeline to Series B
Series A companies typically raise their next round in 10-18 months

Certain Energy raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

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