DISCOM Approval for Solar: 6-Phase Process & Timelines

Every solar EPC in India has lost a deal to the DISCOM approval process. The customer is ready, the panels are sourced, the proposal is signed, and then three weeks of silence from the DISCOM. Understanding exactly what happens at each phase, who owns it, and what you can do to move it forward is the difference between a smooth commissioning and a stalled one.

This guide covers the pan-India DISCOM solar approval process, the 6-Phase DISCOM Approval Timeline framework that applies to all major DISCOMs, and state-specific tips for Gujarat, Maharashtra, and other key solar markets. It bridges the state-specific guides for DGVCL (South Gujarat), UGVCL (North Gujarat), and MSEDCL (Maharashtra) into a single decision framework.

What is the DISCOM solar approval process and why it exists

Approval from the Distribution Company (DISCOM) is required before any solar rooftop system can connect to the public electricity grid. The approval process ensures that the solar system is technically safe, that the distribution transformer in the consumer's area can handle the additional load/generation, and that the net metering arrangement is correctly configured for billing.

The process is set by the central Electricity (Rights of Consumers) Rules, 2020 as amended on 22 Feb 2024 and by each state's electricity regulator, the State Electricity Regulatory Commission (SERC), through its rooftop solar regulations. For understanding what net metering is and how it compares with gross metering, see those dedicated explainers.

Without DISCOM approval:

• The solar system cannot legally export power to the grid.
• The consumer does not receive a bidirectional net meter.
• The PM Surya Ghar subsidy cannot be processed (MNRE's July 2025 CFA guidelines, clause 6(k), require the DISCOM's inspection and approval on the national portal first).

The 6-Phase DISCOM Approval Timeline, the named framework

The 6-Phase DISCOM Approval Timeline is the master framework for managing solar rooftop approvals across any Indian DISCOM. Each phase has a defined owner, a defined deliverable, and a written time limit wherever the rules set one. Treating each phase as a gate, you don't proceed until the deliverable is in hand, eliminates the "I thought it was approved" confusion that costs EPCs weeks of follow-up calls.

1. 1

   Application, Consumer or EPC submits the net metering application

   The consumer (or EPC on their behalf) submits the application form to the DISCOM, either online via the DISCOM consumer portal or physically at the sub-division office. For PM Surya Ghar beneficiaries, the application goes through pmsuryaghar.gov.in, where feasibility, inspection and commissioning show up as stages on one tracker. The deliverable: an acknowledgement slip with a reference number.

2. 2

   Feasibility, DISCOM engineer inspects the connection point

   A DISCOM sub-division engineer visits the site to assess distribution transformer loading, existing metering panel condition, and grid voltage. Up to 10 kW, no study is needed: a complete application is deemed accepted (rule 11(7A)). Above 10 kW the study and its outcome are due within 15 days, failing which the proposal is presumed technically feasible (rule 11(7)). The deliverable: the feasibility outcome. On the PM Surya Ghar portal it appears as a downloadable Feasibility Letter, or as a "Feasibility Waived-off" stage (MNRE consumer manual, 29 Jul 2024).

3. 3

   Sanction, DISCOM issues the formal approval letter

   After a successful feasibility check, the DISCOM circle office issues a sanction letter specifying the approved capacity, inverter technical requirements and BIS/IEC compliance, and any grid-augmentation work required. Some states fix a time for this step (Gujarat's 2024 amendment gives 2 days from the feasibility report for the in-principle consent letter, or an estimate to be paid within 30 days). The deliverable: the sanction letter, keep a copy, it authorises the EPC to proceed. Where the application was deemed accepted, keep the acknowledgement and the portal record instead.

4. 4

   Installation, EPC installs the solar system per sanction specs

   The EPC installs panels, inverter, and AC wiring per the sanctioned design. Timeline is EPC-controlled, and the sanction has its own validity (West Bengal, for example, gives 180 days from clearance or deemed acceptance, extendable by up to 90 days). The sanction letter must be on-site during installation for the DISCOM inspection at Phase 5. The deliverable: a completed solar PV system ready for inspection.

5. 5

   Inspection, State electrical authority or DISCOM verifies the installation

   Under the CEA Safety Regulations, 2023, installations at or below the voltage the state has notified are self-certified, and larger ones are inspected by the Electrical Inspector; the state sets the capacity threshold (Telangana: CEIG certificate above 56 kWp, self-certification up to 56 kWp). The DISCOM then inspects before the meter goes in (Telangana: within 15 working days of the work completion report; West Bengal: within 10 days of the self-certified installation certificate). The deliverable: the inspector's certificate or self-certification report, plus the DISCOM inspection record, required to trigger Phase 6.

6. 6

   Net-Meter, DISCOM installs bidirectional meter and activates net metering

   DISCOM's metering team replaces the existing meter with a bidirectional net meter, verifies the AC disconnect and earthing, and activates net metering on the consumer account. The Rights of Consumers Rules give the DISCOM 15 days from the installation certificate to sign the agreement, install the meter and commission (rule 11(9)). The deliverable: a working net meter and the consumer's first net metering billing cycle.

DISCOM approval timelines by state, what the rules say

State commissions set their own timelines within the central rules, and actual processing speeds vary by DISCOM and location. We could not source reliable average processing times, so the table lists only what the regulations and DISCOM documents say (checked 31 October 2026), not how long applications really take:

Phase-by-phase delay causes and how to prevent them

Knowing the 6 phases is table stakes. Knowing where projects typically stall, and what you can do about it, is what separates EPCs whose projects keep moving from those whose files sit in a queue.

Phase 1 delays (Application): Why net metering applications get rejected usually comes down to missing documents, name mismatch between application form and electricity bill, or inverter not on the MNRE approved list. Prevention: use a standardised document checklist and collect everything before submitting. See the net metering application guide for India for the master checklist.

Phase 2 delays (Feasibility): Above 10 kW, the DISCOM misses the 15-day study limit, or the engineer does not visit. (Up to 10 kW, a complete application is deemed accepted and no study is needed.) Prevention: call the sub-division office a few days before the limit ends, with your reference number, and ask for the visit date. A polite, specific call works better than a formal complaint at this stage.

Phase 3 delays (Sanction): Transformer overloading or grid capacity constraints at the sub-station level. This is a genuine technical issue that DISCOM must address, you cannot bypass it. Transformer caps are written into state rules (Maharashtra's 2019 regulations: 70% of rated capacity unless a load study allows more; Telangana's 2025 regulation: 50%; BESCOM's 2023 guidelines: 80%). Prevention: check transformer loading status at the sub-division office before committing to a project in an area where many solar installations have already happened.

Phase 4 delays (Installation): EPC procurement delays, panel availability, or weather. Prevention: order equipment the day the sanction letter arrives. Don't wait for the installation to be 100% planned, get materials moving.

Phase 5 delays (Inspection): Electrical inspectorate or DISCOM inspection backlogs. Wait times vary and we found no state-wide averages; the written limits we found are 15 working days for the CEIG in Telangana and 10 days to approve drawings in Gujarat. Prevention: book the inspection appointment the day installation is complete, not after.

Phase 6 delays (Net-Meter): DISCOM metering team availability and bidirectional meter stock. Prevention: after submitting the installation certificate, call the sub-division office to confirm a meter is available. The Rights of Consumers Rules give the DISCOM 15 days from the certificate, and a delay without just cause carries compensation of not less than ₹500 per day (rule 11(12)).

State-specific tips for major DISCOM territories

Gujarat (DGVCL, UGVCL, MGVCL, PGVCL)

All four Gujarat DISCOMs follow GERC regulations, so the process is consistent across them; see also Gujarat's solar commissioning process. Note that GERC's Grid Interactive Distributed Renewable Energy Sources Regulations, 2026 are listed on GERC's site as notified on 30 October 2026 and repeal the 2016 rooftop regulations, so the 2024 amendment's step times below may change. Key tips:

• Use the PM Surya Ghar national portal for residential applications, it creates a traceable workflow between the national portal and DISCOM backend.
• Under the 2024 amendment, applications up to 10 kW are deemed accepted without a study; above that the head office writes to the circle within 3 days and the field feasibility report is due within 10 days (check the 2026 text for the current figures). Delay without just cause attracts compensation of not less than ₹500 per day. Track the national route on the PM Surya Ghar portal.
• The DGVCL and UGVCL-specific step-by-step guides are at DGVCL net metering guide and UGVCL net metering guide.

Maharashtra (MSEDCL)

MSEDCL (Maharashtra State Electricity Distribution Company Limited) serves most of Maharashtra outside Mumbai. Key tips:

• MSEDCL's rooftop solar process runs through its online portal at mahadiscom.in.
• MERC's Second Amendment (29 Aug 2024) sets the feasibility study at 15 days, else presumed feasible, with up to 10 kW deemed accepted. MSEDCL's own SoP (April 2022) predates it. It says the sanction is valid for six months, and that if the transformer lacks capacity the application waits in chronological order (the 70% rule).
• For safety, the same SoP asks subsidised consumers for self-certification with a Licensed Electrical Contractor's test report, and asks non-subsidised consumers above 200 kW for the Electrical Inspector's permission. It was written before the 2023 Safety Regulations, so confirm the current requirement with your sub-division office.
• The detailed MSEDCL process is covered in the MSEDCL net metering guide.

Karnataka (BESCOM)

BESCOM (Bangalore Electricity Supply Company) covers Bengaluru and surrounding districts; see the BESCOM net metering guide for the step-by-step process. Key tips:

• BESCOM's rooftop solar portal is at srtpv.bescom.org.
• BESCOM's Common SOP for distributed solar PV (file dated 17 Oct 2025) treats applications up to 150 kW as deemed feasible. Above 150 kW it promises approval or rejection within 10 working days of acknowledging the application.
• For 1 to 10 kW domestic systems, BESCOM's procedure says inspection happens within 5 working days of the work completion report.

Tamil Nadu (TANGEDCO)

TANGEDCO's rooftop process is detailed in the TANGEDCO net metering guide. We could not find a current official processing time for Tamil Nadu, so the central 15-day limits above are the written baseline. Key tips:

• The utility's rooftop FAQ (undated, still using the TANGEDCO name) says systems above 10 kW need CEIG approval before the meter is installed, so confirm the current threshold with the office.
• Delays go through the same grievance route as everywhere: the DISCOM's forum, then the Ombudsman appointed by the State Commission.

Delhi (BSES, Tata Power DDL)

Delhi has its own group and virtual net metering rules, covered in the virtual net metering guide. Key tips:

• BSES Rajdhani and BSES Yamuna cover South/West Delhi and East/Central Delhi respectively (the BSES Rajdhani net metering guide walks through the process). Tata Power DDL covers North/Northwest Delhi.
• We did not open the Delhi DISCOMs' own feasibility checklists, so the central rule is the written baseline: up to 10 kW deemed accepted, above 10 kW 15 days, and compensation of not less than ₹500 per day for delay without just cause (rule 11(12)).

What a complete application looks like across DISCOMs

Document lists differ by state, and the DISCOM's current checklist always wins (Telangana's 2025 regulation, for example, asks for the latest bill, proof of the fee payment and a bank passbook copy). Most DISCOMs ask for a version of this set:

Consumer documents (always required):

• Latest electricity bill with consumer account number
• Proof of property ownership (property tax receipt, sale deed, or lease agreement)
• Aadhaar card
• PAN card where the DISCOM or the scheme asks for it

Technical documents:

• Single-line diagram (SLD) signed by a licensed electrical engineer, see how to read a solar single-line diagram if you're reviewing one for the first time
• Inverter datasheet (inverter must be on MNRE approved list)
• Solar panel datasheet (IEC 61215/61730 compliant)
• Installer's licence number

Post-installation:

• Safety certification: the electrical inspector's certificate above the state's threshold, or the self-certification report below it
• Completion photographs
• Commissioning request form

The India DISCOM net metering list has contact details and portal links for all major DISCOMs if you're working across state borders.

How to track your application and escalate delays

DISCOM tracking mechanisms vary:

• Gujarat (DGVCL/UGVCL): Track via the consumer portal using your application reference number. Escalate to the DISCOM sub-division office once the time for the step in the GERC regulation has passed (for example 10 days for the field feasibility report under the 2024 amendment), and check the 2026 regulations for current figures.
• Maharashtra (MSEDCL): Track via the MSEDCL portal at mahadiscom.in. Escalate to the circle office once the 15-day feasibility limit has passed.
• All DISCOMs: The Rights of Consumers Rules require an online portal, a single point of contact and an application tracking number (rule 11(5) and (6)). Formal escalation goes to the DISCOM's Consumer Grievance Redressal Forum, which normally decides within 30 days and not later than 45 (rule 15(2)). If the forum does not resolve it, the next step is the Ombudsman appointed by the State Commission.

The Electricity (Rights of Consumers) Rules, 2020 are the central reference if you need to escalate a prolonged delay: rule 11(12) sets compensation of not less than ₹500 per day for delay without just cause. A draft amendment to these Rules was circulated for comments in March 2026; we found no notified final version, so check the Gazette before citing it.

Pros and cons of the centralised PM Surya Ghar application route

Why some DISCOMs are faster than others

If you are expanding into a new state, these five factors help you predict how long approvals will take, and what to tell customers:

1. Portal integration. DISCOMs whose back-end systems connect to the national PM Surya Ghar portal process applications without re-keying data. Others still handle each file by hand.
2. Dedicated solar teams. Where rooftop applications go to a ring-fenced team they move faster. Where they share a queue with billing complaints and service requests, they wait.
3. Meter stock and field crews. The second half of the timeline depends on net meter inventory and crew availability. A rush after a subsidy announcement can slow even a fast DISCOM.
4. State priority. States that set explicit rooftop targets, and tie them to DISCOM performance, tend to process faster.
5. Your own application quality. A good share of delays start on the EPC side. Incomplete forms, mismatched load data or a missing single-line diagram trigger a query letter that resets the clock.

The central Rights of Consumers Rules set 15 days for the feasibility study above 10 kW and 15 days from the installation certificate to agreement, meter and commissioning, and the PM Surya Ghar guidelines (clause 13(b)) make DISCOMs responsible for adhering to the specified timelines. Treat these as the standard to cite when you follow up, not as a promise to give your customer, because actual performance varies by DISCOM.

An escalation ladder for a stuck application

Escalate in a fixed order and keep a dated paper trail at each step: submission date, reference number, and the stage where it stalled.

1. Sub-division office. A specific, polite call citing your reference number usually works best at the feasibility and meter stages.
2. DISCOM consumer grievance portal. File a written complaint with the reference number, submission date and the stalled stage. The forum normally decides within 30 days and not later than 45 (Rights of Consumers Rules, rule 15(2)).
3. State electricity ombudsman. If the forum does not resolve it in time, or you are not satisfied, you can approach the Ombudsman appointed by the State Commission (rule 15(3)).
4. PM Surya Ghar portal grievance. For scheme applications, the national portal, the National Call Centre or the portal app can be used, and the guidelines say portal grievances are to be resolved within 30 days (clause 11).
5. State electricity regulatory commission (SERC). For a DISCOM that breaches the Commission's own rooftop regulations, a documented complaint citing the regulation and your dates is the last step.

Keeping customers informed at each milestone

Set the timeline expectation at proposal stage, not after installation. A short WhatsApp message at each milestone turns waiting into confidence:

• Proposal: "We submit your net metering application as soon as you sign and share your documents. The rules for your state give the DISCOM [X] days, and we will message you at every milestone."
• Application submitted: "Your application is in. Reference number is below. The DISCOM reviews the technical documents next."
• Sanction received: "Your technical sanction is approved. A DISCOM engineer will visit for inspection, and someone from our team will be on site with them."
• Inspection cleared: "Inspection is cleared. The DISCOM now installs your net meter. Once it is in, you are live."

Customers who hear from you at each step call less to ask what is happening, and are more willing to refer you before the project is even complete.

How Quickest Solar CRM helps you manage the 6-phase approval pipeline

The 6-Phase DISCOM Approval Timeline creates 6 distinct handoff points in your project pipeline. Most EPCs track these across WhatsApp groups, spreadsheets, and mental notes, which means the moment a rep goes on leave or a phone dies, the status of 10 projects becomes uncertain.

Quickest Solar CRM lets an EPC owner managing multiple projects across multiple DISCOMs keep each project's phase on one lead stage, with labels and follow-up reminders for the ones that are stuck.

• Lead Management, Create a customisable lead stage for each DISCOM approval phase (Application, Feasibility, Sanction, Installation, Inspection, Net-Meter), add labels, and set follow-up reminders so stuck projects get a call.
• Proposal Generator, Send the customer a proposal PDF with your logo, items, terms and conditions, and the PM Surya Ghar subsidy applied in the proposal. Put your own approval-timeline note in the terms before the DISCOM process starts.
• WhatsApp sharing, Share the proposal PDF on WhatsApp and keep saved message templates for the milestone updates above, which you send yourself when the sanction letter arrives, installation is complete and the net meter is active.

What to do this week, for your EPC

1. Map your current projects against the 6 phases. For every active project, note which phase it's in and when it entered that phase. Any project past the written limit for its phase (15 days for feasibility above 10 kW, 15 days from the installation certificate for the meter) needs a follow-up call today.

2. Build your state-specific document checklists. If you operate across more than one state, say Gujarat and Maharashtra, you'll need DGVCL/UGVCL checklists and an MSEDCL checklist. Investing half a day in this now saves rework on rejected applications. Tag each line by who asks for it, as in our PM Surya Ghar documents list.

3. Start proposing timelines with confidence. Once you know your state's typical phase-by-phase timeline, you can quote a credible "your system will be commissioned by [date]", and send a professional solar proposal that includes that timeline before the DISCOM application even starts. Try Quickest Solar CRM free (1 user, 10 proposals a month, no card) to generate that proposal.

Frequently asked questions

What is the DISCOM solar approval process?

The DISCOM solar approval process is the regulatory workflow a solar rooftop system must complete before it can connect to the electricity grid and begin net metering. It covers 6 phases: Application, Feasibility, Sanction, Installation, Inspection, and Net-Meter installation. The process is governed by the central Electricity (Rights of Consumers) Rules, 2020 (as amended on 22 Feb 2024) and by each State Commission's rooftop regulations. There is no single national end-to-end deadline.

How long does DISCOM solar approval take in India?

The central Rules set the main limits: up to 10 kW, a complete application is deemed accepted with no feasibility study; above 10 kW, the study and outcome are due within 15 days, else the proposal is presumed feasible; and the agreement, meter and commissioning are due within 15 days of the installation certificate. State rules add their own steps (for example West Bengal gives 20 days for the outcome and quotation above 10 kW). We could not source reliable average real-world processing times, so check your DISCOM's own documents.

Which documents are required for DISCOM solar approval?

Lists differ by state, so follow your DISCOM's current checklist. Most ask for a version of: latest electricity bill, proof of property ownership, Aadhaar card, single-line diagram signed by a licensed engineer, inverter datasheet (from MNRE approved list), panel datasheet (IEC compliant), and installer licence number. After installation: the electrical inspector's certificate or self-certification report, and commissioning photographs.

Can an EPC submit the DISCOM net metering application on behalf of the customer?

Yes. Most DISCOMs allow the EPC to submit the application on behalf of the consumer with a signed authorisation letter from the consumer. The consumer's identity and property documents are still required. For PM Surya Ghar applications on the national portal, the EPC initiates the vendor-side workflow and the consumer completes their side directly on the portal.

What happens if my DISCOM misses the approval deadline?

Above 10 kW, the proposal is presumed technically feasible if the DISCOM misses the 15-day study limit, and a delay without just cause carries compensation of not less than ₹500 per day (rule 11(12)). You can escalate to the DISCOM's Consumer Grievance Redressal Forum citing the specific regulation and the application reference number; if the forum doesn't resolve it, the next step is the Ombudsman appointed by the State Commission. Under PM Surya Ghar, grievances can also go through the national portal, the National Call Centre or the portal app. A polite follow-up call to the sub-division office citing the written limit is a sensible first step.

Does DISCOM approval differ for PM Surya Ghar applications?

The technical approval process (6 phases) is the same. The difference is the application channel: PM Surya Ghar applications go through pmsuryaghar.gov.in, which tracks feasibility, inspection and subsidy stages in one place. The DISCOM's inspection and approval on the portal come before the subsidy is processed (CFA guidelines clause 6(k)), and the subsidy is processed within 15 days of that approval (clause 6(t)).

What is a sanction letter in DISCOM solar approval?

The sanction letter is the formal approval document issued by the DISCOM after a successful feasibility check. It specifies the approved system capacity, inverter technical requirements, and any grid-augmentation work required. Above 10 kW, installation follows the DISCOM's outcome (or the deemed approval if the 15-day limit passes); up to 10 kW, a complete application is deemed accepted. Validity periods differ by state (MSEDCL's SoP gives six months, Telangana four months for the feasibility), so installation must be completed and the commissioning request submitted before yours expires.

How can I track my DISCOM net metering application status?

The Rights of Consumers Rules require every DISCOM to give an online portal and a tracking number tied to your registration (rule 11(5) and (6)). Use your DISCOM's consumer portal, for example mahadiscom.in for MSEDCL, srtpv.bescom.org for BESCOM, tgsouthernpower.org for TGSPDCL, or the WBSEDCL consumer portal. For PM Surya Ghar applications, track via pmsuryaghar.gov.in. If the online tracker isn't updating, a phone call to the sub-division office with your reference number is a practical next step.