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Status: Funded

May 11th 2021 - Jun 10th 2021

Caldera is a heat battery company that seeks to institutionalise zero-carbon energy solutions for the masses. Its patented breakthrough, Warmstone heat battery, can store 100kWh of heat for a standard home for 24 hours. Caldera asserts that it takes renewable energy when it is low cost (using a flexible green tariff with prices as low as 5p/kWh) and stores it as heat, providing carbon-free hot water and heating via Warmstone. The company has raised over £1.5 million through grants and investment to date, installed its first pilot Warmstone product in a family home, established a manufacturing and R&D base, and acquired the support of a not-for-profit centre of excellence, Energy Systems Catapult. The company is working with König Metall in the European Union (EU) and intends to build and sell Warmstone units via a range of approved UK installers. Caldera will use the investment to install a small number of pilot units in trial homes in 2021 before a full commercial rollout in 2022.

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Log in to view amount pledged

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    £4,558,226
    pre-money valuation

    9.88%
    equity available

    655
    investors

    £1,245
    pledge per investor

    18/10/2017
    incorporated 7 years

    £0.40
    share price


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days to go: Extended investment: Withheld

Log in to view amount pledged

    Log in to view target

    £4,558,226
    pre-money valuation

    9.88%
    equity available

    655
    investors

    £1,245
    pledge per investor

    18/10/2017
    incorporated 7 years

    £0.40
    share price

  • Internet Business Awards Category Award Winner 2015
  • Hertfordshire Business Awards Finalist 2014

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