This is my Cash Power meter. When I am running low on electricity, I have to go down to PUC (Pohnpei Utilities Co.). I buy some units of electricity and they give me a reciept with numbers on it. I program the numbers into my Cash Power meter and VIOLA, electricity! As you can see, I currently have 333.7 units. That should last me a little more than a month, since I don't have an air conditioner or clothes drier.