Instruct: Classify the given review as either positive or negative.
Query: kill a watt, kill a utility bill

Very easy to use and a great way to understand how your electricity usage affects your bill. I now know that my microwave uses 15 watts of power even when it isn't in use, my coffee maker uses 880 watts to brew coffee but only 45 watts to keep it warm and using my kilowatt hour rate from my bill I know my rice cooker uses 4 cents of electricity to cook 2 cups of rice.