[DanielBMarkham]

I looked into it when I bought one, and if I remember correctly a modern highly-insulated kettle uses much less power keeping water warm for 8 hours than constantly heating cold water. Of course, part of that equation is how many cups of tea you drink. And how hot you keep your water. Since I'm a white tea drinker, I keep my kettle on a low setting. I get much better results with a lower setting and a longer steep. (Part of the fun here is trying different teas, temps, and steep times)