Have a great time Ken!
I'm not sure what watt you use, but I found this info on the internet:
Electricity in Canary Islands is 230 Volts, alternating at 50 cycles per second. If you travel to Canary Islands with a device that does not accept 230 Volts at 50 Hertz, you will need a voltage converter. More info:
http://treehouse.ofb.net/go/en/voltage/Canary+IslandsThe Canary Islands have 220 volt electricity, meaning unless your computer or appliance is dual voltage or designed for 220 volts,
you will need a converter or transformer. The cycles (Hz) are 50 per second.
http://www.walkabouttravelgear.com/c_canary.htmSpain Electricity Info for Spain
Voltage is 220V, 50 Hz (cycles). One needs to use a transformer (converter) if the appliance one wants to use is 110V. The voltage in the U.S. is 110V, 60 Hz. The wattage of the transformer must match the wattage of the appliance.
The electric plug has two round pins. One needs an adapter plug if one's appliance comes from the US, where two flat pins are used. The adapter plug can be bought at Amazon or at many travel stores.