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RheEnergise

Low-cost, scalable renewable energy storage
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Investment summary


  • A Potential Market Opportunity; Valued in Trillions of Dollars
  • Positive Commercial Traction. MoUs Across Key Markets: US UK Australia C...
  • Government Backed Innovation with ~$22m Raised From Grants and Investment
  • Patented Proven Technology. 12 Patent Families. 4 Registered Trademarks

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Risks of early stage investment. Not an offer to buy or sell securities. This is a long-term speculative illiquid investment. Investment is not FDIC or SiPC insured.

This best efforts capital raise is not contingent on the Issuer reaching any minimum aggregate offering amount in order to execute their business objectives.

Opportunity


Opportunity

At RheEnergise, we provide a low-cost, highly scalable long-duration energy storage solution well designed for the U.S., Canadian, and global energy markets. Our technology enables utilities, developers, and asset owners to store inexpensive energy—often sourced from renewables—and dispatch it when demand (and prices) rise. We call this solution High-Density Hydro®.

A typical RheEnergise project delivers between 10MW and 100MW of power, with 4 to 20 hours of energy storage capacity. Our round-trip efficiency exceeds 80%, placing us among one of the most effective energy storage solutions available.

This model—buying energy when it’s inexpensive and releasing it during peak demand—is known as energy arbitrage. It’s a critical tool for balancing grids, integrating renewables, and enhancing energy security.

Our customers are organizations that own or develop energy infrastructure assets. This includes operators of natural gas plants, battery energy storage systems, wind and solar farms, geothermal plants, and more. RheEnergise acts as a solution provider, delivering tailored, cost-effective storage systems that align with each customer's goals and grid needs.

Our goal is to rapidly expand across the U.S. and Canada, ultimately deploying potentially thousands of projects across North America. Our mission is to make low-cost, low-carbon energy more widely available to consumers, while supporting grid reliability and accelerating the clean energy transition.

Our solution has global potential, including a focus on high-growth U.S. and Canadian markets:

  • California, Colorado, New Mexico, Nevada, North Carolina, South Carolina, New England, New York, and Texas. 

  • Ontario, and Quebec, where our R&D is based. 

Map Showing the GIS analysis of the number of potential sites where HD Hydro could be deployed across North America

Picture 1302974421, Picture, Picture

We interact with our customers through direct Business-2-Business channels, building relationships with energy developers, utilities, and infrastructure partners. Our sales process is consultative—where we demonstrate our technical capabilities, we align the project design with the goals of the customer, and present what we believe is a compelling economic case.

We have a growing pipeline of opportunities valued at greater than $600,000,000 with active interest from partners in over 30 countries. We’ve signed Memorandums of Understanding (MoUs) with energy developers and mining companies in the U.S., U.K., and Chile, which demonstrates global demand and the large potential for partnerships.

Investment highlights:

  • A uniquely large market opportunity: We’re addressing a global market valued in the trillions of dollars, driven by both growing energy demand plus the transition to low-carbon energy solutions. This rapidly growing demand demonstrates the urgent need for scalable, long-duration energy storage, like High-Density Hydro.
  • Positive commercial traction: Our solution is gaining significant global interest, thanks to what we believe is our clear competitive advantage in both performance and cost. We have a growing pipeline of opportunities valued at greater than $600,000,000 with active interest from partners in over 30 countries. We’ve secured multiple Memorandums of Understanding (MoUs) with commercial partners across the U.S., U.K., Chile, and beyond.
  • Government-backed innovation: We have raised ~$22m in funding, of which over 2/3 is non-dilutive (from government grants), validating both the technical innovation and the impact of our technology.
  • Patented proven technology, de-risked through testing: Our highly skilled engineering and chemistry teams have carried out extensive physical testing to rigorously validate the system and we believe de-risk the solution. This in turn provides us with confidence for commercial deployment at scale.

Problem


Tackling one of the biggest challenges in the world

RheEnergise is tackling some of the biggest challenges in the world; the global growth of energy demand, and the transition to clean energy. Both require an ultra-low-cost, scalable long-duration energy storage solution to be tackled effectively.

As we shift toward renewable power sources like wind and solar, the need for reliable, resilient energy 24/7 becomes critical. These sources are intermittent by nature, which means we must find ways to store excess energy and release it when demand is high, and supply is low.

The scale of the challenge is massive. Over the next 20 to 30 years, thousands of long-duration energy storage projects will need to be deployed worldwide—including across North America—to support growing demand, energy stability and resilience.

Industry analysts predict a dramatic increase in deployment, with forecasts from the LDES Council annual report showing utility scale long duration energy storage must scale up to 50 times faster than is currently projected by 2040.

This level of rapid growth is unprecedented in most industries, which means a normal business growth approach simply won’t cut it. We need innovative, scalable solutions that can be rolled out globally—and fast.

Graph: Cumulative US Energy Storage Instalments. Source: Bloomberg NEF

Graph: Global Cumulative Energy Storage Instalments. Source: Bloomberg NEF

Solution


How it works 

High-Density Hydro® (HD Hydro®) is a next-generation form of gravitational energy storage that works like a giant battery. It’s inspired by the most proven and mature energy storage technology in the world: traditional pumped hydro.

For those unfamiliar, traditional pumped hydro has been in use for over a century. It works by using surplus electricity to pump water uphill into a reservoir. When electricity is needed, the water is released to flow downhill in pipes, through turbines, generating power. This technology has stood the test of time—and crucially, the global supply chain to support it already exists, including right here in North America.

But traditional pumped hydro has major limitations that make it difficult to scale quickly:

  • It requires mountains and huge volumes of water

  • Evaporation reduces its effectiveness, especially in hot, arid climates

  • Flooding valleys raises environmental and social concerns

  • Projects often take a decade just to secure permits—plus up to another decade to deliver

  • New transmission infrastructure is often required

Overall, traditional pumped hydro is too slow, complex, and site-restrictive to meet the urgent demands of the renewable energy transition.

That’s where RheEnergise’s High-Density Hydro® leaps in, solving the scalability problem of traditional pumped hydro. HD Hydro® works on the same fundamental principle—but it’s much faster to deploy, and more scalable, i.e. there are orders of magnitude more sites, especially in locations with shortages of water. HD Hydro can be constructed on hills with low elevations, rather than remote mountains.

What sets us apart:

Instead of water, HD Hydro® uses an environmentally benign, non-toxic, high-density fluid that has 2.5 times the density of water. The increased density of the fluid unlocks a number of major advantages, solving the shortcomings of traditional pumped hydro power:

  • A RheEnergise project would deliver equal energy output on hills—rather than remote mountains, meaning many, many more sites. HD Hydro® can equal the performance of traditional pumped hydro on terrain that’s only 40% as tall.

  • For example, what used to require a 1,250 ft (375 m) mountain can now be built on a 500 ft (150 m) hill without compromising the energy output.

  • Also, when at the same elevation, an HD Hydro® project would be 60% smaller in volume than water-based systems. This smaller footprint means much lower construction and civil engineering costs, plus in turn much faster deployment.

  • An HD Hydro® project is designed to have long lifespans - 60+ years project life makes it a durable, long-term infrastructure asset.

  • The HD fluid is created once at the start of the project—then it lasts for decades, meaning the fluid creation, and water usage is a one-off event at the start of project operation. Only 1/5 of the water is used for the same performance when compared with a system using only water.

  • Projects have minimal environmental impact, especially as we do not interfere with, nor disrupt natural water courses such as rivers or lakes. The environmental permitting, as we found in the UK, is in turn dramatically simplified, taking only weeks to a few months rather than years.

  • If needed for environmental reasons, a project can be built partially or fully underground, even under parking lots.

  • HD Hydro® is a fully enclosed system, evaporation is completely controlled, which is essential for hot, dry regions like in the southwest of the United States.

In short, High-Density Hydro® offers all the reliability and advantages of traditional pumped hydro, with what we believe includes none of the downsides. It’s an energy storage solution that’s ready to scale—across North America and around the world.

Traction


>$600m Project Pipeline 

Since presenting our solution in 2019, RheEnergise has attracted interest from across the globe. We continuously receive new inquiries, particularly from countries with high renewable energy penetration. Over the past year, we’ve seen a surge in demand driven by the growing data center sector, especially in the U.S. and Canada, where RheEnergise can meet the rapid timelines required by data center developers.

Our total project pipeline has a CAPEX value of >$600m for the top 28 deals. There are a total of 162 deals across 30 countries, including the key markets of USA, Canada, UK, Ireland, Poland, Spain, Australia, Chile.

Additionally, we have signed 6 MoUs with leading customers across the USA, UK, Chile, and Australia, including energy developers, and mining companies.

image13.jpg, Picture, Picture

Testimonials from our MoU partners 

Graham White, CEO at Mercia Power Response said: “It is very exciting to explore how we can engage with RheEnergise's HD Hydro® technology, applying our expertise in finding the right locations, developing sites, getting grid connections and operating within the Capacity Market. We see enormous potential for HD Hydro deployment as a future low-carbon replacement to our existing gas-powered assets.” 

Colbun’s innovation manager Diego García said: “Innovation is key for the energy transition.“ Technological advances in solar and wind power makes them the leading sources of green energy in many parts of the world. “Now, we need new storage solutions to cope with the intermittency of renewable energy, and the technology that RheEnergise is developing could have a key role in this regard.” 

Ben Uphill, Director Operations at Sibelco said “Sibelco is looking at new ways to manage and secure its future energy needs and at the same time decarbonise its operations, and so we are excited about the potential contribution that RheEnergise’s hydro storage project can make to our operations. We are keen to adopt green technologies as part of an overall effort to reduce our carbon footprint, so we are delighted to be working with the RheEnergise team on this world-first.” 

Growth plans

Our long term ambition is for RheEnergise to be one of the few companies that can proudly claim to have prevented the emission of over one gigaton of CO2e, with equates to around 3,500 typical projects in operation by 2045.

To achieve this, our near-term goals include:

  • Commence construction of our first-of-a-kind (FOAK) project by mid 2027

  • A second project commencing within 9 months of the first

  • A third project follows 9 months after the second

To support this rapid development, we plan to incrementally expand our technical team and significantly grow our commercial operations, ensuring a technically robust solution and a pipeline of projects in carefully selected countries.

Business model


A diversified, sustainable revenue model 

Our Product

RheEnergise’s solution, High-Density Hydro®, is an alternative to conventional pumped hydropower—just like a high-definition TV is a major leap from standard definition. It’s built on proven principles.  

There are five main components to an High-Density Hydro® project:  

  • Lower Storage Tank(s) – Fully enclosed, these tanks sit at the bottom of the site and store the high-density fluid when not in use.  

  • Powerhouse – Located next to the lower tanks, this facility contains 95% of the system’s electro-mechanical equipment, including turbines, generators, and control systems.  

  • Penstock (Pipe) – A pressurized pipe runs uphill from the powerhouse to the upper reservoir, moving the fluid between the two storage levels.  

  • Upper Storage Tank(s) – Like the lower tanks, these are enclosed reservoirs positioned higher up the hill.  

  • High-Density Fluid – The secret to RheEnergise’s system. This fluid is 2.5 times denser than water, which allows energy storage on modest hills rather than mountains.  

 All components—including tanks, piping, and even the powerhouse—can be buried, making the entire system discreet and landscape-friendly. However, burial is optional and based on site-specific needs. 

Image showing the layout of RheEnergise's demonstration project (same layout as larger, commercial projects, primary difference being scale of the project). 

How we work with customers

Our customers are organizations that own or develop energy infrastructure assets. This includes operators of natural gas plants, battery energy storage systems, wind and solar farms, geothermal plants, and more. RheEnergise acts as a solution provider, delivering tailored, cost-effective storage systems that align with each customer's goals and grid needs.

Likely customers could also include companies with high energy demand, such as data centers, mine operations, ports, cement making and many others. Customers could also include island states, who are challenged to provide low cost security of supply due to inability to interconnect to neighbouring power grids.

Image showing construction work in progress on RheEnergise's demonstration project, and an artist's visualisation of what the site may look like post-landscaping.

Here’s how the process works:

  • Project initiation: Our customers identify a need for long-duration energy storage. They lead on site selection, securing land, grid connection, and obtaining planning and environmental consents—with technical and strategic support from RheEnergise throughout.

  • Design phase: As detailed project design begins, RheEnergise provides specialist engineering input for the High-Density Hydro® system, ensuring seamless integration with the broader project scope.

  • Construction & integration phase: Customer responsibilities are civil works, including the construction of the lower and upper reservoirs, the powerhouse structure, and the penstock.

  • RheEnergise responsibilities: Supply and integration of the powerhouse equipment, delivery of the High-Density Fluid, and full system integration using components sourced from trusted local manufacturers.

In short: RheEnergise delivers a flexible, high-performance energy storage solution. We empower our customers with what we believe is a best in class cost proposition, to build projects faster, smarter, and in more locations—at a fraction of the footprint and environmental impact of traditional pumped hydro.

Business model

RheEnergise operates under a flexible, scalable business model built around three core revenue streams:

1. Consulting services

We provide expert consultancy to help customers successfully deploy High-Density Hydro® solutions. Our services cover:

  • Site selection assistance and feasibility studies

  • Permitting and regulatory support

  • System design and engineering

  • Operational planning and optimization

These consulting services are tailored to the unique features of HD Hydro®, and ensure our clients can fully leverage its benefits at their specific sites. RheEnergise works closely with customer teams—acting as a technical partner—to deliver efficient, optimized, and practical energy storage projects.

2. Technology supply

RheEnergise acts as the supply channel for critical HD Hydro® system components, including:

  • High-Density Fluid

  • Fluid management systems

  • Turbo-machinery and master control valves

  • Custom control software and hardware

  • Initial fluid mixing systems

While RheEnergise doesn’t plan to manufacture these components directly, we manage supply via contract manufacturers and partners. Over time, these items will be delivered directly by established OEMs, built to RheEnergise’s specifications. We generate revenue through a margin on supply of component parts.

3. Operations & maintenance + performance royalties

Following installation, RheEnergise offers long-term operations & maintenance (O&M) services to ensure systems run at peak performance continually. O&M includes:

  • Ongoing system support and diagnostics

  • Control software licenses

  • Regular maintenance services

In addition, we charge performance-based utilisation fees, tied to each project’s energy storage output. These operational royalties create a reliable, recurring revenue stream linked directly to system longevity and effectiveness.

Market


A multi-trillion dollar opportunity

The energy infrastructure market is one of the largest—and fastest-growing—opportunities in the world. As nations expand their power grids and transition to renewable energy, long-duration energy storage (LDES) is becoming essential to ensure grid reliability, balance supply and demand, and support the decarbonization of power systems.

According to the Long Duration Energy Storage Council (November 2024), LDES deployment must scale nearly 50 times faster than historical rates to meet global energy reliability targets—highlighting a massive gap and an even bigger opportunity for scalable solutions like RheEnergise.

Why the time is now

Across the world, nearly 200 countries have committed to tripling renewable generation capacity to 11TW by 2030.

Due to renewable energy inherent intermittency (but low cost) this creates a huge, growing global market for energy storage, used to flexibly manage the variability of wind and solar.

Storage is critical to keep grids stable, reduce energy costs, and improve infrastructure utilization.

In the United States, there has been unprecedented investment in renewables and energy storage. Even before the recent surge in demand driven by data centers and industrial decarbonization, before 2040 LDES must scale up to 50x faster than currently projected. That demand has only grown—with corporations now entering long-term agreements to purchase renewable energy when it’s available.

image8.jpg, Picture, Picture

Growing demand for power and storage in Texas. Source ERCOT 2025

RheEnergise is positioned to lead

The market for long-duration storage is not just large—it must experience exponential growth to meet growing demand and the needs of the energy transition. McKinsey and the LDES council projects it will exceed $4 trillion by 2040, meaning major players will emerge and scale globally.

RheEnergise offers one of the few commercially viable, rapidly scalable solutions on the market today. We’re already seeing commercial traction, with a growing pipeline valued at over $600 million.

We have the opportunity—and the patented solution—to capture a meaningful share of this transformational global market.

This market opportunity is further fuelled by ambitious decarbonization energy targets around North America including California, New York, Colorado, Washington, Massachusetts. In Canada, nine out of ten provinces have implemented decarbonization targets as have countries like Australia, the UK, Germany, and India. These targets and new market mechanisms are spreading globally, accelerating demand for reliable, long-duration energy storage solutions.

In places like Texas, even shorter-duration battery systems have already demonstrated the ability to stabilize grids and manage peak summer demand. With the addition of Long-Duration Energy Storage (LDES) and specifically HD Hydro®, states like California, New Mexico, Arizona, and many others can improve energy reliability, reduce peak energy costs, and prevent rolling blackouts.

HD Hydro® is what we believe to be the perfect solution for these challenges, offering both grid stability and a way to address the growing demand for energy.

A major benefit of HD Hydro® is that it ensures the majority of project value stays within the local economy. In the U.S. and Canada, we expect over 95% of project value to remain in-country—a stark contrast to battery projects, where the majority of equipment is imported, often from China. This localized value retention helps avoid burdensome import tariffs, further reducing project costs.

Even before tariffs, HD Hydro® is projected to be 40–50% cheaper than lithium-ion battery solutions for long-duration storage (over 8 hours), making it an extremely cost-competitive solution for energy storage.

Competition


Who is our competition?

While we believe no one else is currently developing the HD Hydro® concept, there are other players in the long-duration energy storage (LDES) market. These include both traditional solutions, such as pumped hydro, and emerging technologies, like flow batteries and compressed air energy storage.

When comparing these solutions, the most common metric used is Levelized Cost of Storage (LCOS). LCOS standardizes many of the project inputs, including:

  • Energy costs

  • Discount rates

  • Use case (cycles per day)

  • Inflation rates

  • Project lifespan

LCOS is a useful way to compare technologies by factoring in elements like system degradation, round-trip efficiency, capital costs, and operational costs. It helps assess which technology might offer the best value for a specific use case by enabling a like for like comparison

While competitors like flow batteries or compressed air are still working on scaling their solutions, RheEnergise stands apart with a proven, scalable, and more cost-effective long-duration energy storage solution. Traditional systems like pumped hydro face serious challenges—high capital expenditure, long permitting times, and limited deployment flexibility. On the other hand, HD Hydro® can be built nearly anywhere, because we seek hills not mountains, with minimal environmental impact.

Picture 1949410340, Picture

Graph showing LCOS for HD Hydro® vs other energy storage technologies. The LCOS was calculated for 20MW, 8-hour systems, with an 8% discount rate and $50/MWh energy purchase price. Technology and performance costs were sourced from: Schmidt & Staffell, Monetizing Energy Storage, Oxford University Press, 2023; Roland Berger LDES technology cost report for LDES Council, May 2023. 

Categories of competition:

  • Short-Duration Energy Storage (S): Technologies focused on fast, rapid-response storage for shorter durations (e.g., lithium-ion batteries).

  • Medium-Duration Energy Storage (M): Solutions that provide several hours of energy storage, such as flow batteries and HD Hydro®.

  • Long-Duration Energy Storage (LDES): This includes pumped hydro, compressed air, and also HD Hydro®, offering the ability to store energy for multiple hours to days.

The limitations of Competing Storage Solutions are:

  • Li-ion batteries:  Li-ion batteries are less-cost effective for long duration storage. Because of constraints on the supply chain, including high tariffs from the U.S. impacting costs of components, and supply from areas of geopolitical tension, security of supply cannot be guaranteed. Li-ion batteries also have a relatively short lifespan of 10-12 years, which poses environmental concerns with recycling the minerals extracted. 

  • Flow batteries: Flow batteries rely on Vanadium, which comes with high costs and availability challenges. They are also not technologically reliable long-term and have the same environmental impact concerns as Li-ion batteries. 

  • Competing gravity systems: Other forms of gravitational energy storage, such as lifting blocks, often require the construction of new vertical elevation. This can have a massive carbon footprint (from concrete) with limited efficiency, with these constraints limiting the cost-competitiveness of this solution. 

  • Compressed air (and other compressed gases): Compressed air systems face the same issues as traditional pumped hydro; A limited number of sites are available, and long construction timelines apply. The technological risks have not yet been mitigated, and the current round-trip efficiency is around 40-50%. 

  • Thermal energy storage: Thermal energy storage suffers from low-round trip efficiency, as there is a noticeable heat loss over extended periods. This makes it unsuitable currently for LDES needs. 

RheEnergise’s HD Hydro® offers what we believe is a more sustainable, cost-effective, efficient (at about 80% round trip efficiency), and scalable solution for long-duration energy storage.

image4.jpg, Picture, Picture

Table showing how HD Hydro compares to other energy storage technologies, for long-duration applications.

RheEnergise stands out in the energy storage market due to its combination of:

  • High round-trip efficiency

  • Low costs

  • Minimal degradation

  • Long system lifetime

By leveraging the mature supply chains and global knowledge base associated with pumped hydro, RheEnergise addresses key challenges such as scalability, environmental impact, and system durability, making what we believe is the best solution compared to competitors.

Intellectual property

RheEnergise have accumulated a huge volume of trade secrets in the course of developing HD Hydro® and the demonstrator project in the UK, and are now in the process of innovation capture and patent harvesting. RheEnergise is advised by Basck, led by Christian Bunke, global 300 IP Strategist, who started his career in Sandvik (Svedala). 

RheEnergise has 17 patents. We have 12 patent families with 8 filed and 4 drafted ready for filing soon. Of these patents, 3 are granted in UK and pending globally in 150+ countries with filing in UK, US, CA, EU and PCT. 

Picture, Picture


Vision and strategy


Our vision is to provide affordable, accessible, clean energy across the world.

HD Hydro® is a scalable, ultra low cost solution that works almost anywhere, and as a result we anticipate to experience large customer demand.

Our mission is to rapidly expand across the U.S. and Canada, ultimately deploying potentially thousands of projects across North America. Our goal is to make low-cost, low-carbon energy more widely available to consumers, while supporting grid reliability and accelerating the clean energy transition. 

Impact


Our long term ambition is for RheEnergise to be one of the few companies that can proudly claim to have prevented the emission of over one gigaton of CO2e, which equates to around 3,500 typical projects in operation by 2045.


How we got here


Incorporated in 2019, our team at RheEnergise has worked extremely hard to progress as quickly as possible. We were awarded a £8.24m (~$11.06m) contract from the UK Government in 2022, for the design and construction of our Demonstration Project. This contract included funds for all the necessary Research & Development needed to engineer an operational version of every sub-system. Alongside other grant awards, this contract has provided the company with a huge boost towards our goals.  

A timeline of RheEnergise’s progress  Picture, Picture

The project is a 500kW system on an operational mine in the South of the UK. This project includes all relevant subsystems. To successfully deliver this project, it was necessary to first design and test these sub-systems at our facility in Montreal. 

A timeline of RheEnergise’s progress part 2 

Picture, Picture

 As of this June, the demonstration project is close to completion. We will continue to obtain and measure results over this summer. These results will fundamentally change the discussions and progress we are able to make with the many potential customers we have. 

Images from RheEnergise’s demonstrator site 

A collage of several images of a building

AI-generated content may be incorrect., Picture, Picture

Top left: September 2024, its all taking shape. Top right: February 2025, Lower reservoir roofing. Bottom left: April 2025, powerhouse mechanical installation. Bottom right: March 2025, Close to construction completion. 

 

Funding


For this funding round, RheEnergise is targeting a raise of $1.5m, with a ceiling of $3.0m. Shares on offer include rights to participate in future funding rounds.

RheEnergise will continue to secure funds from a diverse range of sources, including equity investment, non-dilutive funding where available (grants), early commercial revenues, tax credits and tax rebates for R&D activities, and current cash reserves.

To date, we’ve been successful in raising non-dilutive funds, achieving a 2:1 ratio of grants to equity. We have raised £11.3m ($15.1m (@ rate1.33)) in grants and £5.0m ($6.7m (@ rate 1.33)) in equity.

Additionally, we benefit from substantial R&D tax rebates, totalling £562k in cash and £340k in future tax shields.

The use of funds covers technology R&D to scale the solution, funds to extend our patent and IP portfolio, further develop traction with customers and build a pipeline of projects for the future, and to run the back office of the business.

The following chart illustrates how we intend to use the net proceeds received from this Offering. The values below are inclusive of payments to financial and legal service providers, payment processing fees and escrow related fees, all of which were incurred in the preparation of this Offering and are paid in advance of the closing of the Offering however will be funded from raise.

  1. Technology research & product development: We are a technology-based company and will continue to invest heavily in technology research and product development (R&D for short). As a result of this funding, we will be able to accelerate our R&D much faster than without the funding. This will be paramount in developing our unique offering to the world.
  2. Intellectual property: In conjunction with our R&D, it is essential that we continue to invest heavily in further development of our patents, trademarks and in the defense of those already created.

  3. Business development: Our business development/ sales and marketing efforts are handled by a small team. We have developed commercial traction without the full ability to convert leads into a shortlist of customers for our first commercial projects. This funding will support this customer journey work at a much faster pace including more resources for senior team and external support.

  4. Finance, legal & corporate: We are a capital hungry business that needs to ensure that resources are available to continue to maintain financial control and be sufficiently skilled in raising new funding for both the company and our projects. Further, we need to ensure we are sufficiently resourced to manage the legal and corporate demands of the business, funding and our multiple counterparties.

  5. General working capital: These proceeds will be used to continue to build out the company’s infrastructure including team and project management, as well as company operating expenses, including, but not limited to, salaries, rent and office expenses.

Summary


Key highlights of RheEnergise, why you should consider this investment 

  • Market opportunity: Driven by both the global energy transition and the surging energy demand, particularly from growing sectors like data centers.

  • Perfect product-market fit: Our solution meets the urgent needs of the energy industry with what we believe is unmatched scalability and cost efficiency.

  • Best-in-class economics: Offering what we believe are better economics with a highly competitive levelized cost of storage (LCOS).

  • Expert team: Led by a highly skilled team with deep expertise in energy storage and technology innovation.

  • Extensive R&D testing: Our technology has undergone rigorous testing in our state-of-the-art R&D facility.

  • Large-scale demonstration project: A near-complete large-scale demonstration project which we believe will effectively mitigate technical risks.

  • Strong customer traction: Growing customer demand and numerous signed MoUs with global players.

  • Government support: Backed by large government grants and tax incentives, ensuring long-term viability.

  • Last chance to invest: This is the final opportunity to invest before the demonstration project becomes fully operational, which we believe will be a driver for significant valuation growth.

  • Environmental impact: A solution that reduces CO2e emissions when deployed alongside renewable energy sources.

  • Fast deployment: Quick to gain consents and rapid to deploy, meeting the urgent demands of the U.S. energy market.

  • Clear path to success: A clear, strategic pathway to global scalability and market leadership.

Disclosures


This notice should not be construed as an offering of securities or as investment advice or any recommendation as to an investment or other strategy by OpenDealBroker LLC dba the Capital R ("ODB"). OpenDeal Broker LLC is compensated in cash commission by RheEnergise Limited . Company will pay OpenDeal Broker LLC: a 5% cash commission for the dollar value of the securities sold to investors and a securities commission equivalent to two percent (2.0%) of the dollar value of the Securities issued to Investors pursuant to the combined proceeds of each Offering at the time of closing (as such terms are defined in the offering engagement agreement between ODB and RheEnergise Limited)

RheEnergise Limited has engaged ODB to conduct an offering ("the offering") of Ordinary Shares issued by RheEnergise Limited Into eligible persons on the Republic platform (the "Platform").

Risks of early stage investment. Not an offer to buy or sell securities. This is a long-term speculative illiquid investment. Investment is not FDIC or SiPC insured. 

Diversification does not guarantee a profit or protect against losses.

Certain information set forth in this presentation contains “forward-looking information”, including “future-oriented financial information” and “financial outlook”, under applicable securities laws (collectively referred to herein as forward-looking statements). Except for statements of historical fact, the information contained herein constitutes forward-looking statements and includes, but is not limited to, the (i) projected financial performance of the Company; (ii) completion of, and the use of proceeds from, the sale of the shares being offered hereunder; (iii) the expected development of the Company’s business, projects, and joint ventures; (iv) execution of the Company’s vision and growth strategy, including with respect to future M&A activity and global growth; (v) sources and availability of third-party financing for the Company’s projects; (vi) completion of the Company’s projects that are currently underway, in development or otherwise under consideration; (vi) renewal of the Company’s current customer, supplier and other material agreements; and (vii) future liquidity, working capital, and capital requirements. Forward-looking statements are provided to allow potential investors the opportunity to understand management’s beliefs and opinions in respect of the future so that they may use such beliefs and opinions as one factor in evaluating an investment.

These statements are not guarantees of future performance and undue reliance should not be placed on them. Such forward-looking statements necessarily involve known and unknown risks and uncertainties, which may cause actual performance and financial results in future periods to differ materially from any projections of future performance or result expressed or implied by such forward-looking statements.

Although forward-looking statements contained in this presentation are based upon what management of the Company believes are reasonable assumptions, there can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. The Company undertakes no obligation to update forward-looking statements if circumstances or management’s estimates or opinions should change except as required by applicable securities laws. The reader is cautioned not to place undue reliance on forward-looking statements.

All broker-dealer related securities activity is conducted by OpenDeal Broker LLC, an affiliate of OpenDeal Inc. and OpenDeal Portal LLC, and a registered broker-dealer, and member of FINRA | SiPC, located at 149 5th Avenue, 10th Floor, New York, NY 10010, please check our background on FINRA’s BrokerCheck. Investments in private companies are particularly risky and may result in total loss of invested capital. Past performance of a security or a company does not guarantee future results or returns. Only investors who understand the risks of early stage investment and who meet the Republic's investment criteria may invest.  Neither OpenDeal Inc., OpenDeal Portal LLC nor OpenDeal Broker LLC verify information provided by companies on this Site and makes no assurance as to the completeness or accuracy of any such information. Additional information about companies fundraising on the Site can be found by searching the EDGAR database, or the offering documentation located on the Site when the offering does not require an EDGAR filing.

https://www.finra.org/#/
https://www.sipc.org/

This Offering is limited solely to Purchasers who are “accredited investors” as defined in Regulation D. To be eligible to participate in the Offering, you will be required to represent to the Company in writing that you are an accredited investor and must have provided a third-party certification attesting to such status as required by Rule 506(c). You must also represent in writing that you are (i) purchasing the A2 Ordinary shares for your own account and not for the account of others and not with a view of reselling or distributing the A2 Ordinary shares, (ii) not domiciled or a citizen of a country in which cryptocurrency offerings are illegal, and (iii) not from countries which the Office of Foreign Assets Control has deemed a “sanctioned” country.

In order to qualify as an “accredited investor,” a potential Purchaser must meet one of the following conditions of the date on which the Subscription Agreement is executed and as of the date of the purchase:

(i) Individual – Income Test. An individual who had an income in excess of $200,000 in each of the two most recent years (or joint income with his or her spouse in excess of $300,000 in each of those years) and has a reasonable expectation of reaching the same income level in the current year;

(ii) Individual – Net-Worth Test. An individual who has a net worth (or joint net worth with his or her spouse) in excess of $1,000,000 (excluding the value of such individual's primary residence);

(iii) IRA or Revocable Company. An Individual Retirement Account (“IRA”) or revocable Company and the individual who established the IRA or each grantor of the Company is an accredited investor on the basis of (i) or (ii) above;

(iv) Self-Directed Pension Plan. A self-directed pension plan and the participant who directed that assets of his or her account be invested in the Partnership is an accredited investor on the basis of (i) or (ii) above and such participant is the only participant whose account is being invested in the Partnership;

(v) Other Pension Plan. A pension plan which is not a self-directed plan and which has total assets in excess of $5,000,000;

(vi) Irrevocable Company. An irrevocable Company which consists of a single Company (a) with total assets in excess of $5,000,000, (b) which was not formed for the specific purpose of investing in the Partnership, and (c) whose purchase is directed by a person who has such knowledge and experience in financial and business matters that he or she is capable of evaluating the merits and risks of the prospective investment;

(vii) Corporations and Other Entities in General. A corporation, partnership, limited liability Company or Massachusetts or similar business Company, that was not formed for the specific purpose of acquiring an interest in the Partnership, and which has total assets in excess of $5,000,000; or

(viii) Entity Owned by Accredited Investors. An entity in which all of the equity owners are accredited investors. OpenDeal Broker LLC is a New York limited liability company. OpenDeal Broker LLC has not independently verified any of the information provided or makes any assurances as to the completeness, accuracy or reliability of any such information provided by the Company.

Deal terms


Accredited investors only. All investors will be required to verify their accreditation.

Minimum investment

$518.16

The smallest investment amount the issuer is accepting in this offering.

Maximum investment

$250,000

The largest investment amount the issuer is accepting in this offering.

Funding goal

$5.39M

RheEnergise Limited (Reg D) is raising a maximum amount of $5.39M, which includes $2.39M from off-platform investments. The maximum goal for Reg D 506(c) is set at $3M.
Learn more

Deadline
RheEnergise Limited (Reg D) campaign will end on .
Type of security

Ordinary shares

Common stock issued by RheEnergise Limited
Learn more

Price per share

$21.59

The price of each share of Ordinary.

How it works

Documents

Capital R (OpenDeal Broker LLC, CRD #291387) is hosting this Reg D 506(c) securities offering by RheEnergise Limited.
Company documents
Subscription Agreement RheEnergise Limited - Reg D PPM.pdf Risk Factors.pdf Accreditation FAQs.pdf Form CRS.pdf Disclosures & Disclaimers.pdf Additional Risk Disclosures.pdf

About RheEnergise

Legal Name
RheEnergise Limited
Founded
Apr 2019
Form
United Kingdom Limited Partnership
Employees
27
Website
rheenergise.com
Social Media
Headquarters
Google Map location of of RheEnergise
5-7 Buck Street London , London, England
Headquarters
5-7 Buck Street, London, London, England, United Kingdom NW1 8NJ

RheEnergise Team
Everyone helping build RheEnergise, not limited to employees

Profile picture of Stephen Crosher
Stephen Crosher
CEO & Co-founder
Strong track record in innovation, commercialization and management across energy, property and retail. Former Commercial Director of Quiet Revolution, CCO of X-Wind Power and MD of Fleet Renewables.
Profile picture of Graham Cook
Graham Cook
CFO & Co-Founder
25+ years experience in senior financial roles with focus on cleantech (CFO at C-Capture, Yorkshire Hydropower, Eel power and Q-Bot). Experience includes raising tens of millions in funding for cleantech.
Profile picture of Dr. Tamás Bertényi
Dr. Tamás Bertényi
CTO & Co-Founder
Engineer & serial entrepreneur with a PhD in experimental fluid mechanics from Cambridge. 20+ years in the cleantech space. Previous roles include R&D Director at Quiet Revolution and CTO at NPI waste heat recovery for data centres.
Profile picture of Jim Campion
Jim Campion
Non-Executive Chairman
MD of Actis' Rezolv Energy Fund. Previously Partner at EnerCap Capital. Held senior positions at Biomass Engineering and Bowman Power. Experience investing in power projects up to £1.3B. Fellow of the Energy Institute.
Profile picture of Chris Baxter P.Eng
Chris Baxter P.Eng
Senior R&D Engineer
Chris is a chemical engineer from the University of Ottawa. He spent 7 years at National Research Council Canada, contributing to solutions for today's challenges in the energy, mining, and environmental sectors
Profile picture of Dr. Frieder Kaiser
Dr. Frieder Kaiser
Senior R&D Engineer
An Experimental Fluid Dynamicist with a PhD from the Karlsruhe Institute of Technology (Germany). As a Postdoctoral Fellow at Queen's University, Frieder led multiple research collaborations developing techniques and flow control approaches.
Profile picture of Christian  Powoski
Christian Powoski
Senior Project Engineer
Christian is a mechanical engineer with 10 years’ experience in the design of sustainable energy simulations and lead mechanical engineer in the construction of vertical farms. He holds a Bachelor of Mechanical Engineering from McGill University.
Profile picture of Diana Xu P.Eng
Diana Xu P.Eng
Senior R&D Engineer
Diana holds a Chemical Engineering degree from the University of New Brunswick, with hands-on experience across multiple industries in development and implementation.
Profile picture of Lizzi Gold
Lizzi Gold
Business Development Manager
Lizzi is our Business Development Manager with Chemical Engineering degree. She brings 6 years’ experience across business development, commercial strategy, operations support and project management to the RheEnergise team.
Profile picture of Valerie Lamenta
Valerie Lamenta
R&D Engineer
Valerie holds a degree and Master’s in Mechanical Engineering at McGill University. She designed and built an experimental test facility for the characterization of heat transfer fluids used in thermal energy applications.
Profile picture of Madeleine  Buffet
Madeleine Buffet
R&D Chemist
Madeline holds an M.Chem degree from the University of Oxford. She completed her thesis in physical chemistry, using ultra-precise optical techniques to measure quantum effects in biological systems.
Profile picture of Sheriza Jiwani
Sheriza Jiwani
R&D Engineer
A Bachelor’s degree in Mechanical and Materials Engineering from Queen’s University, and a complementary Certificate in Business. Sheriza completed a 16 month professional internship in aerospace defense.
Profile picture of Bart Stockman
Bart Stockman
Senior Test Engineer
As a design and development engineer, Bart has worked on extensive building, modification, and commissioning of prototypes, as well as running tests and data gathering.
Profile picture of Kirsty Berry
Kirsty Berry
Project Manager
Kirsty is an experienced project and team leader who has worked in renewable energy for the last 25 years. She holds an Electronic Engineering degree and a masters in Renewable Energy Systems Technology.
11 more team members
Stephen Crosher
CEO & Co-founder
Graham Cook
CFO & Co-Founder
Dr. Tamás Bertényi
CTO & Co-Founder
Jim Campion
Non-Executive Chairman
Chris Baxter P.Eng
Senior R&D Engineer
Dr. Frieder Kaiser
Senior R&D Engineer
Christian Powoski
Senior Project Engineer
Diana Xu P.Eng
Senior R&D Engineer
Lizzi Gold
Business Development Manager
Valerie Lamenta
R&D Engineer
Madeleine Buffet
R&D Chemist
Sheriza Jiwani
R&D Engineer
Bart Stockman
Senior Test Engineer
Kirsty Berry
Project Manager

Press

RheEnergise on BBC News
Vimeo Vimeo
·
Jan 31, 2025

Broadcast on BBC Breakfast on the 31st January 2025. Justin Rowlatt, BBC Climate Editor meets Stephen Crosher, CEO of Rhe...

Pumped up: how 'high density hydro' could supercharge glo...
Canada's National Observer Canada's National Observer
·
Oct 9, 2024

Say energy storage and most imagine EV lithium-ion batteries. But a range of "long duration" concepts that store power fo...

Energy storage backed with over £32 million government fu...
GOV.UK GOV.UK

Five energy storage projects across the UK will benefit from a share of over £32 million government funding.

Logo of RheEnergise

RheEnergise

RheEnergise successfully raised $246,508 from 101 investors on November 1, 2025
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