Sat is the smallest unit for bitcoin. 1 sat is 0.00000001 btc.
Discussion
And how much of a penny is THAT?
Now it’s 1 sat = 0.03 cent
how much #power does that burn; convert it to cents
You can’t. Because one block can contain one to a hundreds of thousands of transactions. Therefore you can’t ask how much power does one transaction use or how many watts a sat use. Math doesn’t work like that.