Nashik is supplied by Maharashtra State Electricity Distribution Company Limited (MSEDCL), which trades as Mahavitaran. MSEDCL distributes power across the whole of Maharashtra apart from parts of Mumbai, and Nashik Zone is one of its zonal offices, covering the city, Nashik Road and the surrounding rural circles. This matters because Mumbai has three separate licensees of its own: Adani Electricity Mumbai, Tata Power and BEST. A page telling you to apply through an Adani or Tata Power portal has pointed a Nashik consumer at a utility that does not serve the city.
Commercial terms come from the Maharashtra Electricity Regulatory Commission (MERC), not from the discom and not from us. Under the MERC Grid Interactive Rooftop Renewable Energy Generating Systems Regulations, 2019, your system is capped at your sanctioned load in kW or contract demand in kVA, and it must also sit within 70% of the local distribution transformer capacity. Every consumer category may apply, residential, commercial, industrial, agricultural and housing-society common loads alike.
Consumers carrying arrears with MSEDCL are not eligible until the dues clear. Exported units are credited against consumption on the same connection and carried forward through the settlement year, which is why an oversized array on a small sanctioned load helps nobody.