Quantum Data Energy PLC

(Incorporated in England and Wales)

(Registration Number: 12886458)

LEI :213800HFVHGJ9YGO9F71

Share code on the LSE: MAST

ISIN: GB00BNG90H86

Dated: 16 December 2025

Quantum Data Energy PLC

("Quantum", "QDE" or the "Company")

2025 A Remarkable Year in Review

London, UK - Quantum Data Energy PLC (LSE: MAST) is pleased to announce an overview of the key progress and milestones achieved during 2025. Looking back to the start of the year, the Company had a market capitalisation and valuation of below £1m, and a net liabilities balance sheet position, making it very difficult to raise funding in an already challenging capital markets environment. Since the start of the year to date, the Company completed an equity fundraise of £5m gross proceeds. The equity fundraise was approved by the Company's shareholders at a General Meeting held on 8 July 2025, and by the FCA approving the Company's prospectus which was published on 9 July 2025. As a result of the successful completion of the equity fundraise, the Company settled essentially all its liabilities at PLC level, leaving a healthy cash balance to grow the business, and now has an increased market capitalisation and valuation of c. £7m¹ at the date of this announcement, representing enterprise value growth of c. 10x. Further, the Company's 100% owned 8.1 MW Pyebridge flexible generation power asset has produced record electricity generation and sales revenue during the first 11-months of 2025, highlighting the strong demand for flexgen power and proving the Company's business model. The Company completed a £5m project investment agreement for its Hindlip 7.5 MW flexible generation power project in JV with Powertree at project SPV level (being non-dilutive to PLC shareholders), resulting in the project being fully funded through construction into production with no further funding obligations from QDE, proving that the Company is able to attract and secure non-dilutive funding for its projects. Further key progress and milestones achieved during 2025 to date are highlighted below.

Key Highlights:

·    Completed an equity fundraise of £5m gross proceeds (see RNS announcement dated 11 July 2025);

·    Company's 100% owned 8.1 MW Pyebridge flexible generation power asset has produced record electricity generation and sales revenue during the first 11-months of 2025, highlighting the strong demand for flexgen power and proving the Company's business model (see latest RNS announcement in this regard dated 9 December 2025);

·    Company completed a £5m project investment agreement for its Hindlip 7.5 MW flexible generation power project in JV with Powertree at project SPV level (being non-dilutive to PLC shareholders), resulting in the project being fully funded through construction into production with no further funding obligations from QDE (see RNS announcement dated 6 May 2025);

·    Company's Hindlip 7.5 MW flexgen project commences and progresses construction, with completion and commercial production expected in Q1 2026 (see RNS announcement dated 6 November 2025);

·    Acquired the exclusive rights to a 25 MW portfolio of flexgen development projects at a significantly lower cost compared to market, substantially bolstering the Company's portfolio of projects (see RNS announcement dated 22 July 2025);

·    Offer to purchase a 7 MW brownfield flexgen site (see RNS dated 4 September 2025);

·    Introduced QDE's new AI datacentre power supply strategy, and entered into JV agreements with key partners, Carbon Zero Markets and Navon World to bolster its new strategy (see RNS announcement dated 11 November 2025);

·    Company rebrand and name change following strategic expansion, to better reflect the Company's purpose as it advances toward its new vision (see RNS announcement dated 3 November 2025); and

·    Company has appointed Sustainable Investing Solutions ("SIS") to assist with its growth funding at project level process (see RNS announcement dated 2 December 2025).

Pieter Krügel, CEO at Quantum Data Energy PLC, said: "Looking back at 2025 it is clear that it was a remarkable year for the Company. We started the year with a market capitalisation of below £1m and coupled with already challenging capital market conditions in general, making it very difficult to raise funding. Since the start of the year to date we successfully recapitalized the Company to the tune of £5m gross proceeds, settled essentially all debts at PLC level, leaving a healthy cash balance to grow the business, and made significant business growth progress. The net result of all the progress and milestones we achieved during 2025 to date is reflected in the Company's market capitalisation and valuation which is now sitting around £7m representing enterprise value growth of c. 10x. We have big plans for 2026 and a lot of momentum behind us, so we are expecting to progress toward our first target of 300 MW at some pace. I would like to sincerely thank our loyal shareholders who have supported the Company this past year."

About Quantum Data Energy PLC:

Quantum Data Energy PLC (LSE: MAST) is a UK-based developer, operator and owner of flexible generation power assets. The Company delivers flexible, modular power solutions to the UK grid and AI datacentres worldwide, enabling scalable, reliable energy for next-generation digital infrastructure. The Company has deep expertise in infrastructure planning, grid access, gas access, and efficient power supply. Its new AI power supply strategy is intended to position Quantum as a leading AI infrastructure platform on the London Stock Exchange.

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References:

1: https://www.londonstockexchange.com/stock/MAST/quantum-data-energy-plc/company-page

ENDS

This announcement contains inside information for the purposes of the UK version of the Market Abuse Regulation (EU No. 596/2014) as it forms part of United Kingdom domestic law by virtue of the European Union (Withdrawal) Act 2018 ('UK MAR'). Upon the publication of this announcement, this inside information is now considered to be in the public domain.