There is a social electricity tariff, applicable to customers in a socio-economic situation, as evidenced by the social security system.
Single persons are also considered as beneficiaries, even if they do not receive any social support, and if the total annual household income is equal to or less than € 5 808, plus 50% for each household member who has no income, up to a maximum of 10.
If this help is not enough, you can always appeal to the help of your municipality, to help pay the bills.