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A Transmission and Distribution Utility (TDU) surcharge assessed on your electric bill as a way to recover costs for Advanced Metering Systems, sometimes referred to as smart meters. This amount is in addition to a standard metering charge, but it may be bundled in a single line with all other TDU charges on your bill. If itemized separately, this surcharge may appear as "AMS," "Advanced Meter," or combined with the “Energy Efficiency Cost Recovery Factor” (EEC).
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