Quantum Data Energy PLC

(Incorporated in England and Wales)

(Registration Number: 12886458)

LEI :213800HFVHGJ9YGO9F71

Share code on the LSE: MAST

ISIN: GB00BNG90H86

Dated: 6 January 2026

Quantum Data Energy PLC

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

Record High Full-Year Electricity Generation and Revenues Achieved

London, UK - Quantum Data Energy PLC (LSE: MAST) is pleased to announce, further to its RNS announcement dated 9 December 2025, that its 100% owned Pyebridge 8.1 MW flexible generation power asset ("Pyebridge") has achieved record high electricity generation and revenues for the 2025 full calendar year. Electricity generated and sold for the full 12-month period of 2025 came to c. 10.8 Gigawatt/hours ("GWh") representing an increase of c. 71% compared to the same period in the prior year, and total revenues for the full 12-month period of 2025 increased with c. 136% compared to the same period in the prior year. Further key highlights are detailed below.

Key Highlights:

·    Pyebridge achieved record high electricity generation output and sales of c. 1.6 GWh for the month of December 2025, representing its highest generation output in any single month to date;

·    Pyebridge generated and sold c. 10.8 GWh of electricity during the full 12-month period of 2025, representing an increase of c. 71% compared to the 12-month period of the prior year;

·    This sustained high output underscores the asset's robust operational performance and the growing demand for flexible generation capacity amid intermittent renewable supply;

·    Total revenues generated for 2025 came to c. £1.6 million, representing Pyebridge's highest income generated compared to any previous calendar year, and an increase of c. 130% compared to 2024;

·    Total revenues are based on an average of c. 5.6 MW in production over the period, representing c. £291,000 per MW per annum;

·  During 2025 Pyebridge achieved an average electricity sales price of c. £135/MWh representing an outperformance of c. 67% compared to the average wholesale market electricity price over year; and

·   During 2025 Pyebridge generated and sold electricity for an average of 11 hours per day, demonstrating the ongoing strong demand for flexible generation power and validating QDE's core business model.

Pieter Krügel, CEO at Quantum Data Energy PLC, said: "We are very proud of the 2025 full year results that we achieved with our Pyebridge asset, which represent record high electricity generation and revenues. The results underscore the successful outcome of the refurbishment programme at Pyebridge, as well as the ongoing strong demand for flexible generation power amid intermittent renewable supply. QDE's core business model is to generate and supply flexible power at a premium when the national grid is constrained, and that business model is clearly working very well. We are looking forward to 2026 during which we plan to grow our portfolio of assets as we advance toward our first target of 300 MW at some pace."

Issued Share Capital and TVR:

Capitalised terms used in this part of the announcement have the same meaning as those given to them in the Company's RNS announcement dated 23 May 2025 unless otherwise defined.

This part of the announcement is made in accordance with DTR 5.6.1.

The Company announces that following the application to and subsequent approval by the London Stock Exchange for the Prepaid and Cash Warrants block listings as previously announced on 17^th September 2025 and 7^th October 2025 respectively, and further to its RNS announcement dated 2 December 2025, the Company has during the period since 2 December 2025 issued a further 27,625,000 shares fully paid ("Ordinary Shares"). The Ordinary Shares' issues follow the exercise of Prepaid and Cash Warrants, issued pursuant to the share issue authorities approved by shareholders at the Company's General Meeting held on 8 July 2025 and as detailed in its FCA approved Prospectus published on 9 July 2025.

Such Ordinary Shares were admitted to the Official List of the UK Listing Authority and to trading on the London Stock Exchange's main market for listed securities under the Company's Prepaid and Cash Warrants block listings facilities.

As of 5 January 2026, the Company's issued share capital consists of 166,385,735 Ordinary Shares with voting rights. The Company does not hold any ordinary shares in treasury. This figure of 166,385,735 may be used by shareholders in the Company as the denominator for the calculations by which they will determine if they require to notify their interest in, or a change to their interest in, the share capital of the Company under the UK Financial Conduct Authority's Disclosure Guidance and Transparency Rules ("DTR").

Significant shareholdings (>3% holding) will be updated on the Company's website www.quantumdata.energy to coincide with the release of this announcement.

Prepaid and Cash Warrants:

Essentially all of the Prepaid Warrants have been exercised with only 758,836 (or 0.61% of the total) Prepaid Warrants remaining unexercised. Under the terms of the Equity Fundraise as previously announced, 50% of the Cash Warrants originally issued to the extent not previously exercised expire on 11 January 2026, resulting in 122,200,000 Cash Warrants remaining unexercised. Such remaining unexercised Cash Warrants expire on 11 July 2026 if not exercised.

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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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.