Photon Energy N.V.

Pre-Annual General Meeting Information • Apr 20, 2021

NOTICE OF THE ANNUAL GENERAL MEETING OF PHOTON ENERGY N.V.

with its registered address at Barbara Strozzilaan 201, 1083 HN Amsterdam, The Netherlands, registered with the Chamber of Commerce in Amsterdam under number 51447126 (the "Company") to be held at the registered address of the Company at Barbara Strozzilaan 201, 1083 HN Amsterdam, The Netherlands, on 1 June, 2021, at 11:00 a.m. CET.

Agenda of the Annual General Meeting (the "Meeting"):

• 1. Opening and announcements; election of the chairman and secretary of the Meeting;
• 1. Consideration of the annual report 2020 and approval of the annual financial statements (stand-alone and consolidated), annual report 2020 and allocation of the result;
• 1. Consideration of the Remuneration Policy proposed by the Supervisory Board, and adoption of the Remuneration Policy;
• 1. Granting discharge to the members of the Management Board of the Company;
• 1. Granting discharge to the members of the Supervisory Board of the Company;
• 1. Granting authorization to the Management Board to acquire shares in the share capital of the Company;
• 1. Closing

All documentation concerning the Meeting including the Agenda, Annual Report 2020 with explanatory notes, Remuneration Policy as well as draft of the resolutions is available for inspection by shareholders at the Company's registered address and on the website at: https://www.photonenergy.com/en/investor-relations.html since the date of this announcement until the date of the Meeting.

Record Date

In accordance with the Articles of Association of the Company, the shareholders of the Company, entitled to attend and vote at the Meeting, are shareholders who obtain from their custodian bank, a brokerage house, an investment firm or other authorized entity operating their investment accounts on which the Company's shares are registered, a depository certificate ("swiadectwo depozytowe") evidencing their shareholding in the Company on 4 May, 2021 (the "Record Date"), irrespective of who the shareholders of the Company are at the time of the Meeting.

Attending the Meeting in person

Persons/entities who are entitled and wish to attend and vote at the Meeting will be allowed to attend and vote only if they provide, at the latest during the registration for the Meeting, below documents:

• (i) identity document, such as his/her passport in case of physical persons or an extract from the companies register in case of a legal entity and the passport of the authorized representatives of such entity;
• (ii) depository certificate issued by the shareholder's relevant broker, investment firm or a custodian bank, that on the Record Date he/she was included in the records of the bank or the broker as the holder of the Company's shares;

(iii) proxy form (in case a shareholder prefers to attend through an authorized person) on the basis of which a shareholder can authorize a third party to act and cast a vote on behalf of a shareholder. A proxy form must be laid down in writing, the signature of the shareholder must be verified by a notary, and it shall be sent by post to the Company's registered address or by e-mail to kd@photonenergy.com prior to the General Meeting together with the depository certificate and presented at the registration. A proxy form can be downloaded from the website of the Company: https://www.photonenergy.com/en/investor-relations.html;

All shareholders who intend to attend the Meeting in person or through an authorized person are requested to inform the Company and send their depository certificates either to the Company's registered address or by email at kd@photonenergy.com, no later than on 26 May, 2021 at 17:00 CET at the latest. Registration of admittance will take place on 1 June, 2021, from 9:30am to 11:00am CET, i.e. before the commencement of the Meeting and it will not be possible to register and attend the Meeting after that time.

Voting prior to the Meeting through voting instructions

The shareholders are given an opportunity to vote prior to the Meeting by sending voting instructions to the Company. Shareholders who wish to use this form of voting will have to provide the following documents by mail to the Company's registered office or via e-mail to kd@photonenergy.com no later than on 26 May, 2021 at 17:00 CET:

• (i) proxy/voting instructions, downloaded from https://www.photonenergy.com/en/investorrelations.html, dated after the Record Date and duly signed by the shareholder whose signature shall be verified by a notary;
• (ii) depository certificate, issued by the shareholder's relevant broker, investment firm or a custodian bank, that on the Record Date he/she was included in the records of the bank or the broker as the holder of the Company's shares.

Questions

Shareholders can ask questions with respect to the agenda of the Meeting by sending those questions in writing to the registered address of the Company or via e-mail to kd@photonenergy.com. Questions submitted at least 72 hours before the start of the Meeting shall be answered during the Meeting and shall be published in the Meeting's minutes.

Management Board of Photon Energy N.V.

Director Director

Georg Hotar Michael Gartner

Photon Energy N.V. +31 202 402 570 Barbara Strozzilaan 201, Amsterdam 1083 HN info@photonenergy.com The Netherlands www.photonenergy.com

Corporate number: 51447126 Registered with the commercial registry maintained by the Dutch Chamber of Commerce (Kamer van Koophandel). 2/2