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RheEnergise

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Working with pumped energy storage, the company created the High-Density Hydro®, which can be installed on small hills instead of mountains

London, United KingdomFounded 2019Energy
Valuation $10–25M Last recorded · 2026
Headcount <100 Current team size
Total funding $10–50M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for RheEnergise and the history behind them.

About RheEnergise

RheEnergise is a pioneering company in the energy storage sector, focusing on innovative solutions to address the challenges of renewable energy. The company has developed a unique system called High Density (HD) energy storage, which uses a specially engineered fluid, R-19, that is 2.5 times denser than water. This allows their energy storage projects to be installed on smaller hills rather than large mountains, significantly reducing construction costs and environmental impact.

RheEnergise primarily serves utility companies, renewable energy providers, and grid operators who need efficient and scalable energy storage solutions. The company operates in the renewable energy market, which is rapidly growing due to the global push for decarbonization and the need for reliable energy storage to balance intermittent renewable sources like wind and solar power.

The business model of RheEnergise revolves around designing, building, and operating HD energy storage plants. They generate revenue through the sale of energy storage services, which include storing excess energy during periods of low demand and releasing it back to the grid when demand is high. This helps stabilize the grid and ensures a steady supply of electricity, making renewable energy more reliable.

RheEnergise's HD energy storage solution is not only cost-effective but also environmentally friendly. The R-19 fluid is non-toxic, non-reactive, and non-corrosive, making it safe for widespread use. The smaller footprint of their projects means less disruption to the landscape and easier integration into various environments.

In summary, RheEnergise is revolutionizing the energy storage industry with its innovative High Density solution, providing a cost-effective, scalable, and environmentally friendly way to store and manage renewable energy.

Source: Dealroom company data

At a glance

Founded
2019
Headquarters
London, United Kingdom
Sector
Energy

Investors

2 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed2 investors entered at this stage

  • Low Carbon Innovation Fund
  • European Innovation Council
Team profiled 8 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇨🇦 Canada51.4%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about RheEnergise on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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