A few weeks ago I tried to wonder why I run my dishwasher overnight. I set it to run at about 4 AM or 5 AM, and it finishes up by 6 AM or 7 AM or so. Here's a conclusion of my analysis. Electricity is more efficient overnight, and therefore costs less and emits less carbon. Power companies produce less electricity at night due to lower demand. During the day, they produce more electricity. As for-profit entities, power companies want to use as little fuel as possible - after all, their biggest expense is fuel. So the plants that they run all the time are their most efficient plants, and the plants that they add during peak times - during the day - are their least efficient plants. By running my dishwasher over night, I am guaranteed to be using the power by the most energy efficient power plants. Winter Heat / Summer Heat My dishwasher releases quite a bit of waste heat and moisture. Most of that heat from the dishwasher stays in my house. By runn...
Useful and Useless Ideas from Lance J.