"The main electricity companies in Spain include Grupo Endesa (the largest), Iberdrola, Union Fenosa and Hidrocantábrico. Like many other countries, the energy market has been completely opened up, allowing customers to choose which supplier they use (...)"
So... you are complaining most of the bill goes back to the budget rather than to a private company?
Listen, your country needs to pay for infrastructure some way.
That money has to find its way from your pocket to the budget, there are no miracles here.
At least with electricity bill you have option to use less electricity and pay less taxes. Would you like it to be levied on some things you can't decide to use less?
If you think your country costs too much, vote for people that promise to make the government cost less.
https://rightcasa.com/spanish-utilities-electricity,-gas-and...
"The main electricity companies in Spain include Grupo Endesa (the largest), Iberdrola, Union Fenosa and Hidrocantábrico. Like many other countries, the energy market has been completely opened up, allowing customers to choose which supplier they use (...)"
So, are they lying or not?