The European version of electricity is typically supplied at 220 volts and a frequency of 50 Hz. However, electricity officially is at 230 volts plus or minus 10%. While some localities do have 110 volts, it is most common to find that 50 cycles is the standard frequency regardless of the voltage throughout much of Europe, including Germany, Spain, France, Italy, and the rest of Europe. The quantity of power available also depends on the hotel, home, or flat where you are staying. For example you might be able to use a 1000 watt travel iron or hair blower.
It is good to know that if the lights start to flicker, shut off the item you are using immediately. That is about the only warning you will get before a fuse is blown.
To use electrical appliances in Spain, you need the proper hardware, foreign power converters and adapters. This is needed in order to plug in without electrocuting your electrical appliance or machine.