The Electricity
Paradox

We desperately need renewable
energy, yet we are wasting it!

Wind and solar PV are growing exponentially, which will dramatically increase curtailment. Li-ion batteries are competitive for storing 30 min to 4 hours of electricity. But this is not enough.


Only long duration energy storage allows to save this electricity and meet the complete peak demand.

2000

2035

Share of electricity from
Wind and Solar PV

<1%

13%

51%*

2023

Integrating Wind and solar PV:

a growing challenge

Wind and solar PV are developing at a fast pace.


Yet, our grid cannot deal with their intermittency:

  • Surplus electricity is wasted or ‘curtailed’
  • Gas peakers still compensate for shortages

* IEA 2024 World Energy Outlook, APS scenario

3) EXPANSION

1) COMPRESSION

2) STORAGE

Electric Motor /
Generator

Cold water tank

(10-20C)

Warm water tank

(25-80C)

High Pressure Storage Reservoirs (100-300 bar)

Isothermal Compression / Expansion

Hydraulic

Pump / Turbine

Water Piston

Compression Chambers

Heat

Exchanger





We combine pumped hydro and compressed air in a
system to provide electricity that is ultra competitive
anywhere and without critical materials.


To store electricity, water is pumped, not up a hill, like
in pumped hydro; but to compress air in a piston and
store it in a reservoir.


From the start, we design this hardware around
modular units that can easily adapt to different power
and energy needs.

Introducing our New Compressed Air Energy Storage (CAES)

1

2

Efficient heat management

Above ground storage


  • Passive and simple heat exchanger
  • State-of-the-art efficiency
  • Low cost and low maintenance


  • Air Tanks in composite materials
  • Deployable anywhere
  • Reduced administrative & site work

Roadmap: Three steps to commercialization

  • Low cost of electricity for 4+ hours
  • Long lifetime of >30 years
  • Recyclable with low environmental impact

Cost, location and modularity will allow us to grow fast in a growing stationary storage market and with the potential to enable the decarbonization of the energy sector.

€ 350B

2035

Stationary storage market

740Mt

CO2e avoidance

2035

Utility/TRaDING companies

  • Energy-as-a-service (EaaS)
    • Ancillary services
    • Bulk services
    • T&D deferral

wind/solar PV producers

  • Hardware sale or as-a-service (HaaS)
    • Renewables integration
    • Energy arbitrage
    • Self consumption (beachhead)

Customers

Simon Belka - CEO

MBA & Mechanical Engineer

17+ years experience in complex system engineering

Mônica Felício Fragoso - CPO

Architect, Dual Master in Design & Strategy

18+ years experience in product development in top multinational corporates

Denis Barkats - CTO

PhD in Physics from Princeton, scientist at Harvard

25+ years experience in cutting-edge experimental research

Our mission is to make electricity
storage sustainable and remarkably
cheap to solve the intermittency of
wind and solar.


We aim to light the world with clean,
reliable and accessible energy,
everywhere in space and time.

Vision

Values

We dare to take risks, question conventions, and embrace the unconventional. Our fearless curiosity drives us to explore new ideas boldly and creatively, understanding that mistakes are part of the journey toward innovation. We believe in keeping a childlike wonder, approaching challenges with ingenuity and playfulness, and staying unafraid to be different. Whether it's tackling complex problems or discovering new solutions, we remain agile, proactive, and willing to experiment. Fun, uniqueness, and a passion for learning are at the heart of what we do, allowing us to spark new ideas and build groundbreaking solutions.

Fearless curiosity

Integrity is one of our core pillars. It forms the basis of trust, both with our customers and among our team. We value honesty and act with full transparency, recognizing that true success cannot come at the cost of our principles. Whether with clients, partners, or colleagues, we are unwavering in our commitment to doing the right thing. We would rather lose a great customer, employee, or opportunity than compromise on our integrity, as we know that trust is the most valuable reward we can earn.

Integrity

We believe the best teams outperform individuals, leveraging each member’s unique skills to create something greater together. We foster an open environment where everyone feels free to share ideas, solutions, and concerns without fear. Humility, respect, and empathy are key to our collaboration, driving us to continuously learn from each other and grow. We embrace transparency, resilience, and feedback to improve our work and ourselves, with a commitment to quality that keeps our customers at the center of everything we do.


Teamwork

We embrace and value diversity in every form (culture, religion, gender, background, skills, nationality, and perspective). Respect means recognising that each individual has a unique journey, shaped by personal experiences, and understanding that there is no absolute right or wrong in individual perceptions. We foster an environment where opinions are valued, empathy is practiced, and open communication is encouraged, even in uncomfortable situations. Diversity is welcomed, and differences are celebrated as strengths. Disrespect or harassment of any kind has no place here. We lead by example to create a supportive, inclusive workplace where everyone feels valued.

Respect

Our goal is to help the planet and its ecosystems thrive by making sustainability a guiding principle in our technology and business decisions. We respect nature and aim to work with it, not against it. We take big steps toward progress while keeping our footprint small. We strive to live to the fullest with the minimal impact possible, preserve natural resources, and reduce 50 million tons of CO2e by 2040. Through every action, we commit to doing no harm and advancing a sustainable future for generations to come.


Sustainability

We demand the highest level of commitment from ourselves because the planet cannot wait for solutions. We foster an environment where our employees are empowered to thrive, driven by passion, resilience, and a shared pursuit of excellence. Our customers can count on us to keep our promises and deliver impactful results. Through hard work, innovation, and a focus on simplicity and quality, we turn challenges into opportunities for positive change.

Engagement