# Certain Energy raises €11.6 million for manganese flow-battery deployment

_Wednesday, August 26, 2026 at 4:04 AM EDT · Capital, Infrastructure · Latest · Tier 2 — Notable_

![Certain Energy raises €11.6 million for manganese flow-battery deployment — Primary](https://www.eu-startups.com/wp-content/uploads/2026/08/Certain-Energy.png)

Certain Energy, formerly RFC Power, has raised €11.6 million in Series A funding to commercialize its manganese flow-battery technology and prepare it for grid-scale deployment. The British Business Bank led the round with €4 million, joined by Centrica Energy, Ceres Power and Temasek Trust's Catalytic Capital for Climate and Health. The company plans to use the capital for a grid-connected MWh-class system in India, expanded UK research facilities and a supply chain for additional commercial projects.

## Sources

- [EU-Startups](https://www.eu-startups.com/2026/08/grid-instability-fuels-e11-6-million-raise-for-uk-energytech-startup-certain-energy/)

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Retrieved: 2026-08-26T09:41:07.756Z
Publisher: Tech & Business (techandbusiness.org)