Electricity is pretty cheap but still costs, you'll be more stymied by the importation of the hw itself since we have high VAT and import tariffs + shipping. Datacentre's here get the best deal on bulk electricity prices.
If you are sending your miner for collocation, there shouldnt be an import tax levied, since the hardware doesnt change owner. In reality in most countries this is quite a battle, and you may get charged import taxes even on RMA items, that you have to claim back, but with the right paper work (read: get a specialist lawyer), it can be avoided. Its one of the things Im looking in to.