posted 18 hours ago
We don’t have an electric kettle anymore, though we did years ago and it was convenient and faster than our old electric stovetop or the microwave oven.
We have had for quite a while now, an electric hot water boiler/dispenser (4 liter, Zogirushi brand). It is an insulated unit that holds the water at a settable temperature, ready to dispense. It is very convenient to get a “cup” of hot water whenever you want, or even just a couple tablespoons if you want to dissolve something. The initial heating cycle of a 4L cold water fill is about 10-15 minutes? Less time for a partial fill, or adding water to top-up the tank.
I think the main issue with efficiency for the water heating (for a cup of tea) is right-sizing the amount, and not heating any more water than is needed. The technique of using your teacup to measure the water to be boiled is a simple example. No extra water is heated, no extra time is taken waiting for unused water.
We recently replaced our old electric stovetop with a new induction stove. The speed is incredible! I believe it would win a race against an electric kettle. As a comparable example, when I prepare ramen noodles (16oz/0.5L water in a 1qt./1L saucepan) I start the water heating on highest setting, before getting the noodle packet from the pantry, and assembling the seasonings to add. By the time I open the packet, the water is at a boil!!
Nails are sold by the pound, that makes sense.