About RheEnergise
RheEnergise is an Energy & Utilities company based in London (United Kingdom) founded in 2019 by Graham Cook, Stephen Crosher, and Tamas Bertenyi. High-density hydro long-duration energy storage technology is developed. RheEnergise has raised $3.35 million across 5 funding rounds from investors including European Commission and Low Carbon Innovation Fund. RheEnergise was last valued at $6.77 million in January 2021. Its chief executive, as recorded, is Stephen Crosher. RheEnergise offers products and services including High-Density Hydro. Its focus areas include Energy Tech, Energy Storage Tech, Energy Storage System and Pumped Hydroelectric. Its legal entity is RHEENERGISE LIMITED.
Company details
RheEnergise was founded in 2019 and is headquartered in London, United Kingdom. Operations focus on the development of high-density hydro technology for long-duration energy storage within the renewable energy sector. This approach is utilized to balance intermittent renewable sources with demand, providing scalable solutions for large-scale storage needs. Pumped storage principles are employed to enable efficient energy storage and release, supporting decarbonization efforts in energy systems.
- Headquarters London, United Kingdom
- Founders Graham Cook, Stephen Crosher, Tamas Bertenyi
- Stage Minicorn
- SectorsEnergy & Utilities
- Website rheenergise.com
- Social LinkedIn X Facebook YouTube
- Legal Name Rheenergise Limited
- Date of Incorporation 05 Apr, 2019
- Jurisdiction LONDON, UNITED KINGDOM
- Total Equity Funding$3.35M (USD)
in 5 rounds
- Latest Funding Round$158.09K (USD), Seed
Dec 2025
- InvestorsEuropean Commission
& 1 more
Products & Services of RheEnergise
RheEnergise offers a comprehensive portfolio of products and services, including High-Density Hydro.
Pumped storage solution for long-duration renewable energy balancing.
Apps and channels of RheEnergise
its YouTube channel RheEnergise Ltd has 147 subscribers.
Funding Insights of RheEnergise
RheEnergise has successfully raised a total of $3.35M across 5 strategic funding rounds. The most recent funding activity was a Seed round of $158.09 thousand completed in December 2025. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $3.35M
- Total Rounds 5
- Last Round Seed — $158,090
- First Round $1.08M
(Jan 2021)
- Investors Count 2
All 5 funding rounds of RheEnergise with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Dec 2025 | $158,090 | Seed | – | – | – |
| Jul 2025 | $2.94M | Grant | – | – | |
| Feb 2024 | $424,000 | Seed | – | Low Carbon Innovation Fund | – |
| Mar 2022 | $1.68M | Seed | – | – | – |
| Jan 2021 | $1.08M | Seed | $6.77M | – | – |
| Date | Valuation | Stage |
|---|---|---|
| Jan 2021 | $6.77M | •••••••• |
Last known valuation $6.77M (Jan 2021). 2 investors in total: 2 institutional.
Investors in RheEnergise
RheEnergise has secured backing from 2 investors, including venture fund and institutional investors. Prominent investors backing the company include European Commission and Low Carbon Innovation Fund.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
| lowcarbonfund.co.uk | ||||
Institution of the European Union responsible for upholding the EU treaties | 1958 | ec.europa.eu | Brussels, Belgium |
Investor details for RheEnergise
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
- Co-investor network
Verified entity values are shown only after access is granted.
People of RheEnergise
17 people are tracked at RheEnergise (5 in leadership, 2 in board & advisors, 10 in team).
| Name | Role | Group |
|---|---|---|
Graham Cook | Co-Founder | Leadership |
Stephen Crosher | Co-Founder and CEO | Leadership |
Tamas Bertenyi | Co-Founder | Leadership |
Tamás Bertényi | CTO | Leadership |
Michael Roche | Investment Director | Leadership |
Matthew Crosher | Project Design Advisor | Board & advisors |
Jim Campion | Chairman | Board & advisors |
Sheriza Jiwani | Junior R&D Engineer | Team |
Lauren Goodfellow | Operations and Finance Executive | Team |
Richard Cochrane | CIO | Team |
Philippa Rogers | Communications Manager | Team |
Marc-Antoine Proulx | R&D Engineer | Team |
Alex Maclean | Creative Designer | Team |
Chris Baxter | Senior R&D Engineer | Team |
Diana Xu | Senior R&d Engineer | Team |
Alireza Mohseni | Senior R&D Engineer | Team |
Christian Porowski | Senior Project Engineer | Team |
Complete people profiles for RheEnergise
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
- Team structure
- Board tenure
- Professional contacts
Verified entity values are shown only after access is granted.
Timeline of RheEnergise
4 dated milestones of RheEnergise across 6 years, from founding to its latest funding, stage changes and deals.
- Founded RheEnergise is founded.
- Funding First funding round of $1.1M.
- Milestone Reaches Minicorn status.
- Funding Latest funding round, Seed, of $158K.
Web traffic of RheEnergise
The website of RheEnergise (rheenergise.com) receives about 2.6K visits a month.
- Monthly visits2.6K
▼ 53.8% vs previous month
Top companies in Energy Storage Systems
2 companies that operate in the same segment as RheEnergise (Energy Storage Systems) in United Kingdom, ranked by their profile score on The Company Check.
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Related news about Rheenergise
Complete news archive for RheEnergise
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Frequently Asked Questions about RheEnergise
RheEnergise was founded in 2019 and raised its 1st funding round 2 years after it was founded.
RheEnergise is headquartered in London, United Kingdom. It is registered at London, England, United Kingdom.
Stephen Crosher is the CEO of RheEnergise, as recorded in our data. They have also founded this company.
RheEnergise is a funded company, having raised a total of $3.35M across 5 funding rounds to date. The company's 1st funding round was a Seed of $1.08M, raised on Jan 2021.
RheEnergise was founded in 2019 and is headquartered in London, United Kingdom. Operations focus on the development of high-density hydro technology for long-duration energy storage within the renewable energy sector. This approach is utilized to balance intermittent renewable sources with demand, providing scalable solutions for large-scale storage needs. Pumped storage principles are employed to enable efficient energy storage and release, supporting decarbonization efforts in energy systems.
RheEnergise offers High-Density Hydro.
RheEnergise has 2 investors. Key investors include European Commission, and Low Carbon Innovation Fund.
The valuation of RheEnergise is $6.77M as of Jan 2021.
RheEnergise operates through Rheenergise Limited.