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To effectively use intermittent renewable energies, the world will need vast amounts of energy storage. Gravitricity's unique technology uses heavy weights to store energy underground. Having now built a 250kW Concept Demonstrator, we are fundraising to support development of a full scale prototype.

  • 250kW demo system now operating in Edinburgh
  • Energy Storage is predicted to be a $620bn market by 2040
  • Strategic partnership with Huisman 
  • Cost effective and environmentally friendly with very long life

Idea

Our patented technology is based on the physical principle that any object at height stores energy (E=mgh). Surplus electricity from grid can be used to raise weights up to 12,000 tonnes in underground shafts; electricity is then released when consumers need it. Disused mineshafts and purpose-sunk shafts can be used.

As planned we built a 250kW Concept Demo in Edinburgh, which we intend to use to confirm our system's capability.

Our tech aims are to have:

• 25+ year life with no cyclical degradation

• 80-90% round trip efficiency: as good or better than all alternatives

• Sub-second response

• Low levelised cost of storage (LCOS)

• No parasitic loads, standing losses, or depth-of-discharge limits

• No rare or explosive materials

We will make money from sales of equipment & expertise to customers worldwide. We have received interest from operating mines, grid companies, EV charging stations and solar developers. We’ll also earn revenue from IP licensing arrangements with our industrial consortium partners.

We’re investigating project sites in UK, Europe, USA and South Africa. A preferred site will be selected this year for our full-scale prototype, which is planned to be built as an SPV over 3-4 years.

Funds from this raise will enable us to complete concept and detailed design for the prototype, to develop our commercial projects portfolio, and to protect new IP.

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Risk warning

Investments of this nature carry risks to your capital, including illiquidity, lack of dividends and dilution. Balance risk with a diversified portfolio. Read more. Approved as a financial promotion by Crowdcube Capital Limited, which is authorised and regulated by the Financial Conduct Authority.

Investment opportunities are not offers to the public and investors must be eligible Crowdcube members. Further restrictions and Crowdcube's limitation of liability are set out in the Investor Terms and Conditions. Please seek independent advice as required as Crowdcube does not give investment or tax advice.

Gravitricity has been given advance assurance by HMRC that the proposed share issue is likely to qualify for Enterprise Investment Scheme (EIS) tax relief.

Tax relief is available to individuals only, with income tax relief currently set at 30 per cent of the cost of the shares for the tax year in which the investment was made. The tax reliefs can also reduce your Capital Gains Tax bill. Read More.

Availability of tax relief depends on your individual and the company’s ongoing circumstances and applicable law.