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Invest in the future of resilient energy infrastructure

Resilience for a Changing World

At Keep Energy Systems, we’re tackling one of the most urgent challenges of the global energy transition: how to deliver reliable, sustainable, and cost-effective power in a world where traditional energy infrastructure is struggling to keep pace with the pressures of growing customer demand, increasing intermittent generation and changing geo-political and cyber threats.

Customers face long waits for new or upgraded grid connections and confidence in grids is being shaken by major disruption events.

Our distributed, long-duration energy storage solution provides customers with local resilience and capacity for growth at the pace they need. 

Why Now? Why Us?

  • Massive market opportunity
    We’re targeting a global long-duration storage market expected to exceed $300B by 2033, across commercial & industrial, mining, island, and utility-scale solar sectors. While the long-term market is very large, we are very focussed on early adopter customers who have an urgent need to act and whose requirements are particularly well suited to the characteristics of our technology.
  • Gaining Traction
    • Prototype system operational at our Nottingham facility.
    • UK government funding secured for a demonstrator on the same site this year.
    • Shortlisted by Amazon for a pilot deployment from a pool of 630+ companies.
    • Paid FEED study completed for a major global mining company.
    • Engaged with partners including Volvo Penta, Siemens and the IRENA SIDS Lighthouse programme (for island communities).
  • Unique Technology
    Our system stores electricity as compressed air and heat using re-purposed diesel engines converted into fuel free compressor/expanders plus industrial components — offering:
    • 5–20 hours of storage
    • Real mechanical inertia for grid stability
    • Fire-safe, temperature-tolerant operation
    • 25-year life with minimal degradation
    • Round-trip efficiency of 65% and cost-competitive LCOS (~$215/MWh)

Built to Scale with Capital Efficiency

Rather than building factories from scratch, our system is manufactured in existing regional supply chains (diesel, oil & gas, industrial gases). This highly outsourced model:

  • Reduces capital intensity
  • Enables regional manufacturing for local content
  • Mitigates geopolitical and tariff risks
Keep Energy Systems’ eTanker installed at an electric vehicle fleet depot, supported by wind turbines for renewable energy storage.

Investment Opportunity

We are launching our £10M Series A round, with the goal of:

  • Finalising product development
  • Scaling our supply chain via industrial partnerships
  • Building our team and systems for commercial deployment in 2027

 

Want to work for us?

We’re always keen to speak with talented people, who will support making a difference. Send your CV to jointheteam@keepenergysystems.com — we’ll be in touch if something suitable comes up!
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Proudly Supported By

Thank you to those organisations that have supported us so far and who we look forward to working with as we build and scale:-

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