Nimesh Katariya DISCOM stands for Distribution Company, the licensed utility that supplies electricity to homes and businesses in an Indian state or city. DISCOMs were created when state electricity boards were unbundled under the Electricity Act, 2003. For rooftop solar, the DISCOM approves the grid connection, installs the net meter and settles exported units.
DISCOM full form: Distribution Company. This entry is for homeowners, EPCs and solar designers in India who need the DISCOM meaning, what DISCOM approval involves for rooftop solar, and which DISCOM serves each major state.
What is the full form of DISCOM?
DISCOM is the short form of Distribution Company, the utility that delivers power from the transmission grid to consumers.
Quick Facts
| Field | Detail |
|---|---|
| Term | DISCOM, Distribution Company |
| Category | India Solar Regulations |
| Regulatory Body | State Electricity Regulatory Commission (SERC) |
| Difficulty Level | Beginner |
Major Indian DISCOMs
| State | DISCOMs |
|---|---|
| Maharashtra | MSEDCL, Adani Electricity Mumbai, Tata Power, BEST |
| Karnataka | BESCOM, MESCOM, HESCOM, CESCOM, GESCOM |
| Tamil Nadu | TANGEDCO |
| Gujarat | UGVCL, MGVCL, DGVCL, PGVCL, Torrent Power |
| Delhi | BSES Rajdhani, BSES Yamuna, Tata Power Delhi |
| Andhra Pradesh | APSPDCL, APCPDCL, APEPDCL |
| Telangana | TSSPDCL, TSNPDCL |
| Rajasthan | JVVNL, AVVNL, JdVVNL |
| West Bengal | WBSEDCL, CESC |
| Uttar Pradesh | UPPCL (PVVNL, MVVNL, KESCO, DVVNL, PuVVNL) |
DISCOM Interconnection Workflow
- Online application via the DISCOM’s solar portal.
- Technical feasibility study: verifies transformer capacity, voltage stability.
- Net metering agreement: bilateral contract.
- CEIG inspection (for systems ≥ 10 kW).
- Bidirectional meter installation.
- Energization & meter testing.
- PTO (Permission to Operate).
Getting from step 1 to step 7 without rework depends on the DISCOM application package matching what the local feasibility reviewer expects, SLDs, structural certificates, and inverter datasheets that already reference the DISCOM’s approved list. This is exactly the packaging work covered under solar permit design engineering.
Net Metering Caps by State (2024)
| State | Residential | Commercial | Notes |
|---|---|---|---|
| Maharashtra | Up to 1 MW | Up to 1 MW | Net metering |
| Karnataka | 1 kW - 1 MW | 1 kW - 1 MW | Net metering |
| Tamil Nadu | Up to 10 kW | Gross only | Net metering small only |
| Gujarat | Up to 1 MW | Up to 1 MW | Net metering |
| Delhi | Up to 1 MW | Up to 1 MW | Net metering |
| Rajasthan | Up to 1 MW | Up to 1 MW | Net metering |
| Andhra Pradesh | Up to 1 MW | Gross metering | Net metering small only |
Beyond the cap itself, several DISCOMs also apply banking charges, wheeling charges, or a cross-subsidy surcharge on exported solar units, see energy banking for how excess generation carried across billing cycles is actually settled.
Key Takeaways
- DISCOM is the state distribution utility responsible for retail electricity supply and rooftop solar interconnection.
- Each Indian state has 1-5 DISCOMs; rules vary by state and SERC tariff orders.
- DISCOM approval typically takes 30-120 days depending on system size.
- Net metering caps and rules vary widely, verify the specific DISCOM’s tariff before quoting.
- CEIG approval needed for systems ≥ 10 kW alongside DISCOM application.
Related Reading
DISCOM approval timelines are one of the biggest variables in an Indian solar project’s schedule, and our state-wise breakdown of solar permit processing times in India lines up DISCOM turnaround against CEIG and SERC steps so EPCs can plan submissions state by state.
For homeowners and installers who want the net metering mechanics explained in plainer terms, Heaven Green Energy’s net metering in India guide and its rooftop solar guide for Gujarat walk through how a state’s DISCOMs handle interconnection and billing for residential systems.
Recent rule changes are tracked in DISCOM net metering changes for 2026.
Disclosure: Heaven Green Energy is a Heaven Designs group company.
Frequently Asked Questions
4 commonly searched questions about DISCOM.
What is the full form of DISCOM?
What does DISCOM approval mean for rooftop solar?
Is a DISCOM the same as the state electricity board?
Which DISCOM serves my address?
Need engineering-backed solar designs?
Heaven Designs prepares solar drawings, structural calculations, electrical engineering documents, and project-specific permit plan sets.