Selected Historical Financials of CEZ Group

Electricity spreads declined from extraordinary high and volatile levels seen during 2022 ப G Clean power (electricity - carbon)1 EUR/MWh 1000 900 -Y+1 -Y+2 800 700 60 Clean spark spread (CSS)² EUR/MWh, weekly averages 140 120 •Y+1 100 -Y+2 80 Clean dark spread (CDS)³ EUR/MWh, weekly averages 600 -Y+1 -Y+2 500 400 600 40 500 400 60 40 20 60 300 200 20 0 300 100 -20 200 0 -40 100 -60 0 -100 Jun-21 Oct-21 Feb-22 Jun-22 Oct-22 Feb-23 Jun-23 Oct-23 Jun-21 Oct-21 Feb-22 Jun-22 Oct-22 Feb-23 Jun-23 Oct-23 Jun-21 Oct-21 Feb-22 Jun-22 Oct-22 Feb-23 Jun-23 Oct-23 www.cez.cz/en 1. German electricity baseload minus carbon (36% efficiency) 2. German (55% efficiency) 3. German (38% efficiency), 49

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