Energean PLC

Declaration of Voting Results & Voting Rights Announcements • Oct 1, 2021

Energean plc ("Energean" or the "Company")

Total Voting Rights

London, 1 October 2021 - Energean plc (LSE: ENOG, TASE: אנאג (today announces that in conformity with DTR 5.6.1, the following:

(a) the Company's issued share capital consists of 177,602,560 ordinary shares of 1p each with voting rights;

(b) the Company does not hold any shares in Treasury; and

(c) accordingly, the total number of voting rights in the Company is 177,602,560 and this figure may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in, the Company under the Disclosure Guidance and Transparency Rules of the FCA.

Enquiries

Investors, Analysts and Media Kate Sloan, Head of IR, ECM and Communications +44 (0) 7917 608 645

About Energean plc

Established in 2007, Energean is a London Premium Listed FTSE 250 and Tel Aviv 90 Listed E&P company with operations in nine countries across the Mediterranean and UK North Sea. Since IPO, Energean has grown to become the leading independent, gas-focused E&P company in the Eastern Mediterranean, with a strong production and development growth profile. The Company explores and invests in new ideas, concepts and solutions to produce and develop energy efficiently, at low cost and with a low carbon footprint.

Energean's production comes mainly from the Abu Qir field in Egypt and fields in Southern Europe. The company's flagship project is the 3.5 Tcf Karish, Karish North and Tanin development, offshore Israel, where it intends to use the newbuild fully-owned FPSO Energean Power, which will be the only FPSO in the Eastern Mediterranean, to produce first gas, commencing mid-2022. Energean has signed contracts for 7.2 Bcm/yr of gas sales on plateau into the Israeli domestic market, which have floor pricing, take-orpay and/or exclusivity provisions that largely insulate the project's revenues against global commodity price fluctuations and underpin Energean's goal of paying a meaningful and sustainable dividend.

With a strong track record of growing reserves and resources, Energean is focused on maximising production from its large-scale gas-focused portfolio to deliver material free cash flow and maximise total shareholder return in a sustainable way. ESG and health and safety are paramount to Energean; it aims to run safe and reliable operations, whilst targeting carbon-neutrality across its operations by 2050. These aspirations were significantly advanced with the completion of the Edison E&P acquisition in December 2020, which is now being successfully integrated in Energean's business.