Navsari is Dakshin Gujarat Vij Company Limited territory. DGVCL is one of four distribution subsidiaries of Gujarat Urja Vikas Nigam and covers the whole of South Gujarat: Surat, Navsari, Valsad, Bharuch, Narmada, Tapi and Dang. It is organised into four circles, and Navsari Division sits under the Valsad Circle, with its own division office at GEB Colony, Kabilpore. Your file is worked locally, not from Ahmedabad.
Getting the licensee right matters more than it sounds. Gujarat has four state distribution companies plus a private licensee, and they share neither forms, portals nor timelines. MGVCL covers the central belt around Vadodara. UGVCL covers the north. PGVCL covers Saurashtra and Kachchh. Torrent Power is a private licensee in Ahmedabad, Gandhinagar and parts of Surat city. None of them serves Navsari. A vendor who hands you a Torrent or PGVCL net-metering form has not read your bill.
The framework comes from the Gujarat Electricity Regulatory Commission. GERC lets every consumer category apply, caps approved solar capacity against your sanctioned load, and sets how exported units are credited against imported units over the billing cycle. Units you push to the grid at noon offset units you draw after dark. The meter does the storing, so you do not need a battery to make the economics work.