Behind-the-meter system

In a behind-the-meter system, every interconnection point sits on the customer side of the utility revenue meter. Utility wiring rules for these installations forbid any connection inside the revenue meter socket or in the utility transformer compartment. For smaller retail behind-the-meter sites, the utility supplies a bi-directional net AMR meter, and the utility decides where its meters go so it can reach them for service. A behind-the-meter solar and storage system can tie in at a line-side tap point of interconnection. One sample single-line diagram shows this with a Tesla Megapack 1 energy storage system. In storage metering guidance, a behind-the-meter installation uses a site meter, an energy storage meter and a PV meter. A front-of-meter installation also adds an auxiliary meter. That guidance lists Accuvim, ION8650 and SEL735 meters, but marks the ION8650 as not applicable for the storage and PV meter positions in a behind-the-meter installation. A storage qualification guide covers behind-the-meter projects in California, Hawaii, Massachusetts, New York and Ontario.

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• sentence 6: support check: partial - Table lists the three meters and shows '-' for ION8650 under BTM ESS and PV, but '-' meaning 'not applicable' is inferred, not stated.
• sentence 7: support check: partial - Table of contents lists BTM sections for those five regions, but it doesn't state it is a storage qualification guide or that it covers only those regions' BTM projects (it also lists front of meter). -->