I Have a Toastess stainless steel kettle 1500w of efficiency.. well the way I use it.
It holds 2L of water but i put in enough water to cover the exposed element which is enough for two cups of coffee as it turns out.
I notice when I'm at others houses they Fill the kettle right up which not only wastes electricity it wastes time not that I'm that pressed for time but I am a a bit of a impatient conservationist..
