Investor Presentaiton

Operating Costs Operating Costs mar-2021 5.6% 10.0% 1.8% 0.5% Operating Costs mar-2020 18.3% CFE Comisión Federal de ElectricidadⓇ ■ Energy and fuel supplies ■Third party energy and fuel supplies ■Salaries and related costs 10.1% 43.8% 94.4 mil mdp 10.6% 158.4 mil mdp 51.8% 0.8% 5.2% 0.7% 0.6% 19.1% 18.3% 2.8% ■ Maintenance, materials and general services ■ Taxes and duties ■ Whole Electricity Market (MEM) costs Employee benefit costs Depreciation During 1Q 2021 'Energy and fuel costs' increased by 40.6 billion pesos, while 'Third party energy and fuel supplies' increased 27.6 billion pesos due to the disruption event in Texas, USA, caused by extreme weather conditions which stopped natural gas supply. 'Maintenance, materials and general services' decreased 1.9 billion pesos, and 'Salaries and related costs', decreased by 0.4 billion pesos. Source: Financial Statements CFE 15

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