ESI stands for Electric Service Identifier. Your ESI ID is a unique number your local electric utility uses to identify a specific residence or business and make sure that your electricity service is set up at the correct address. If you have more than one address on your account, you will have multiple ESI IDs– one for each address.
Your meter number and your ESI ID are two different things; your meter number identifies the specific meter at your home or business, and you could end up with a new meter number if your meter is replaced for some reason.
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