# Certain Energy

> Imperial spinout commercializing manganese flow batteries for long-duration grid storage.

## Why it is interesting

August 2026 £10M Series A led by British Business Bank with Centrica, Ceres, and Temasek Trust C3H — targeting UK curtailment waste and an India MWh-class demo.

## Profile

- **Latest funding:** Series A — £10M (August 2026)
- **Latest known valuation:** Not publicly disclosed
- **Total disclosed equity funding:** Not publicly disclosed
- **Stage:** series-a
- **Status:** private
- **Industries:** climate-tech, deep-tech, infra-cloud
- **Coverage:** full
- **Last updated:** 2026-08-27
- **Latest funding investors:** British Business Bank, Centrica, Ceres Power Holdings, Temasek Trust C3H

## Key facts

- Series A (Aug 26, 2026): £10M led by British Business Bank (£3.5M cited)
- Participants: Centrica, Ceres Power, Temasek Trust C3H
- Formerly RFC Power; manganese flow chemistry
- India MWh-class grid demo + UK R&D expansion planned

## Funding history

- Series A · £10M · August 2026
  Source: https://www.imperial.ac.uk/news/articles/admin-services/enterprise/2026/imperial-energy-storage-spinout-certain-energy-raises-10m-from-investors/

## Related articles

- https://venturecapitaltracker.com/2026-certain-energy-10m-series-a-manganese-flow
- https://venturecapitaltracker.com/2026-august-26-27-investment-news-defense-agents-grid

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)
**Last updated:** August 27, 2026

**Editorial note:** AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.

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Source: https://venturecapitaltracker.com/startup/certain-energy