Electricity Usage Monitor

Using the same concept behind Adafruit’s Tweet-A-Watt,[114] hook into a Kill-A-Watt electricity flow detector to measure the energy usage of an electrical appliance such as a refrigerator or television.

Some electrical utility companies offer their customers energy tracking by month. Access this on the Web and calculate the percentage of total electricity that monitored appliance consumes on a monthly basis. Then, based on your electricity bill for that month, calculate the monthly, daily, and hourly cost associated with operating that appliance. You may be surprised just how much money you’re spending on watching a couple hours of TV or how much that freezer that you bought on sale really ends up costing over its ...

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