Investor Presentaiton

☐ Energy sector Bulgaria's priorities in the energy sector are energy security, sustainable development and eco-efficient economy in the context of a more competitive energy market. Due to the vulnerability of energy recourse supplies, amplified by the Russian-Ukrainian conflict, measures for diversification of energy sources became a top priority and immediate actions were undertaken, with focus on diversifying Bulgaria's sources of natural gas supply. Energy import dependency, % 57.5 58.1 60.5 57.5 55.5 Energy sources for production of electricity and heat in 2022, % PV, 4.0% Hydro, 8.0%. Wind, 3.0%. Biomass, 1.0% Imported, 12.00% Nuclear, 33.0% 39.4 36.3 38.1 37.9 36.1 Industrial TPP, 2.0% District heating TPP, 5.0% 2017 2018 2019 2020 2021 EU ⚫Bulgaria Thermal power plant, 45.0% Source: Eurostat Source: Association of Traders with Energy in Bulgaria Note: Nuclear energy by the Eurostat's standards is local energy resource Austria Slovenia Croatia Hungary Bosnia Herzegovina Bulgaria-Serbia gas interconnection (IBS) Note: Nuclear energy is considered (in line with Eurostat's standards) as a local energy resource Natural gas supply diversification projects Status Expected year of Capacity completion (bcm) Balkan Gas Distribution Centre Completed Dec 2019 Bulgaria Greece gas Completed Oct 2022 3.00 interconnection (IGB) Bulgaria - Serbia gas Construction interconnection (IBS) 2023 1.80 Italy Floating, storage and regasification LNG terminal in Greece Ongoing 2023 Expansion of Chiren gas storage facility Construction 2025 1.00 Source: Bulgartransgaz, ATEB Monteneg Romania Expansion of Chiren gas storage facility Serbia Kosovo Bulgaria Macedonia NZ Greece Moldova Local, 88.00% Ukraine Albania Floating LNG terminal Bulgaria-Greece gas interconnection (IGB)arkey (+ Russia 12 12

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