Hi you will get a standing charge about 15 euro a month for electricity and 10 euro for your water, plus the meter readings if any used, plus they are higher than the UK. Make sure they are paid by bank direct debit, or you will find the electricity disconnected, a lot of paper work to have it reconnected and it took me 4 days plus a fee, and they will only call a Spanish telephone.
You will need to keep the Spanish bank in credit, all the other charges will need to be paid , Suma, Community, insurance. Local charges and telephone / internet if you have it. Its not cheap to keep your second home. Do not buy a car until you are sure you need one.
I have had a home in Spain for 10 or more years
Regards
Steve