I think this is different enough to the last enamelling question to ask in a new thread so it does not confuse things.

I love the results enamelling can produce (like HMPjewellery's earrings) and want to know how much it costs to get set up and also then to run the equipment? As I do this only in my spare time and at home will haveing a mini kiln just eat electricity? Am I likely to see my bills go through the roof? Or am I making this up in my own head?