- Delhi has three DISCOMs: BRPL and BYPL (BSES) and TPDDL (Tata Power), all under DERC.
- Apply on the portal of the DISCOM that serves the site, using the CA number and SLD.
- DERC has used a time-block settlement rule — verify the current rule with DERC.
- Each DISCOM runs its own portal, so know which one serves the address first.
- Capacity, fees, meter cost, DT loading (~30% cited) and timeline are estimates — verify with the DISCOM/DERC.
Delhi is unusual: one metro, three private DISCOMs, one regulator. For an EPC, that means the first job on any Delhi net-metering application is knowing whether the site sits with BRPL, BYPL or TPDDL. This guide walks through the right portal, feasibility, the DERC time-block rule, the fees, and the realistic timeline to a sealed meter.
What Delhi net metering is
Net metering in Delhi lets a rooftop solar customer feed extra power to the grid and get credit for it. The customer's solar feeds the building first, extra units flow to the grid, and a bidirectional meter counts both directions. At settlement, export is netted against import, following the DERC rules in force.
The twist is the structure. Delhi has three DISCOMs, each covering part of the city, all regulated by DERC. You apply to the DISCOM that serves the address — and the portal, CA number format and small process details differ between them.
Who sets the rules in Delhi
DERC, the Delhi Electricity Regulatory Commission, writes the regulations — capacity, the metering model, the time-block settlement rule, the tariff and the timelines. The three DISCOMs run the process: the portals, feasibility, the agreement and the meter.
A rule change usually starts with a DERC order, and the DISCOMs then update their process. Always check both the DERC regulation and the relevant DISCOM portal before you quote capacity, fees, settlement or timeline. Every state-specific figure below is an estimate.
The three Delhi DISCOMs
Knowing the DISCOM is step zero. Here is who covers what.
Source: Delhi DISCOMs (BSES, Tata Power DDL). Coverage areas are indicative — confirm the serving DISCOM from the customer's electricity bill.
Capacity caps under DERC
The net-metering capacity cap in Delhi is set by DERC, tied to the customer's sanctioned load and the distribution transformer. The headline cap and size bands have moved across DERC orders, so treat any capacity figure as an estimate and verify the current cap with your Delhi DISCOM and the DERC regulation before you size a project.
Capacity is tied to sanctioned load
Your system size is tied to the customer's sanctioned load. If the solar size pushes the connection past the sanctioned load, the customer may need a load enhancement first. Read the sanctioned load off the bill before you finalise the size.
Metering model and the DERC time-block
DERC has used a time-block settlement rule, where export and import are netted within defined time blocks rather than as one monthly total. This matters because the value a customer gets depends on when they export versus when they import.
Why the time-block rule matters
Under a simple monthly net, all export and import are pooled. Under a time-block rule, export in one block may not fully offset import in another, which can lower the effective credit. The exact rule, the block definitions and the settlement method are set by DERC and change with its orders, so verify the current time-block settlement rule with your Delhi DISCOM and the DERC regulation before you model savings. Our net vs gross vs net billing guide explains the broader settlement models.
The application process
The Delhi net-metering application runs on the portal of the DISCOM that serves the site. Here is the flow from registration to a sealed meter.
Identify the Delhi DISCOM
Check which DISCOM serves the site — BRPL or BYPL (both BSES) or TPDDL (Tata Power DDL) — and use that portal.
Register & submit the application
Register on the DISCOM portal with the CA number (consumer account), enter the system size within the sanctioned load, and upload the SLD and equipment details.
Feasibility study
The DISCOM checks the distribution transformer and network. A clear DT means the system can connect; a loaded DT can cap the size or need an upgrade.
Sign the net-metering agreement
Once feasibility clears, the DISCOM issues the agreement under DERC rules. Both sides sign before metering.
Bidirectional meter & commissioning
The DISCOM supplies, tests and seals the bidirectional meter. After joint inspection and commissioning, export starts counting against import.
Source: Delhi DISCOM processes and DERC regulations. Portal screens differ by DISCOM and change over time — verify the current steps with your DISCOM.
Feasibility and DT loading
Feasibility is the technical check that decides whether the network can take the system. The DISCOM reviews the distribution transformer (DT) that feeds the connection. A DT already loaded with rooftop solar may cap your system or need an upgrade.
The DT loading limit
A limit near 30% of DT capacity for cumulative rooftop solar on one transformer is commonly cited across India, but the exact figure varies by state and has been amended. Treat 30% as commonly cited, not a fixed Delhi number, and verify the current DT loading rule with your DISCOM and the DERC regulation. Our DT loading guide goes deeper.
Deemed feasibility for small systems
The Electricity (Rights of Consumers) Rules 2020 set deemed feasibility for systems up to 10 kW. These thresholds have been debated and amended in 2024–2026, so verify the current deemed-feasibility limit before you rely on it. See deemed feasibility.
Fees and meter cost
The Delhi DISCOM charges a processing fee plus the cost of the bidirectional meter, set under the DERC tariff order. There may also be a small agreement or testing charge.
All amounts above are estimates that change with each DERC tariff revision. Verify the current figure with your Delhi DISCOM and the DERC regulation before you quote a customer.
How long Delhi net metering takes
Delhi net metering commonly takes a few weeks from a clean application to a sealed meter, but the real time depends on feasibility and meter supply. The Rights of Consumers Rules and DERC set target timelines for each stage.
Treat any week count as an estimate and verify the current timeline with your Delhi DISCOM and the DERC regulation. File early, send a clean SLD and document set, and chase the feasibility result the moment it is due. Our timeline-by-state guide compares the commitments across DISCOMs.
When Delhi net metering stalls
If feasibility drags, the agreement is delayed, or the meter is not installed, start with the DISCOM office and its grievance channel, then escalate within the DISCOM.
If that fails, DERC and the Consumer Grievance Redressal Forum (CGRF) handle disputes, and the Electricity Ombudsman sits above the CGRF. The Rights of Consumers Rules also back the deemed-feasibility and timeline rights. Our delay and escalation guide maps the steps and the letters that move things.
How SuryaHub helps with Delhi net metering
Three DISCOMs mean three portals and three sets of small rules. SuryaHub keeps every Delhi job in one DISCOM workflow, tagged by BRPL, BYPL or TPDDL and linked to the project, so your liaison sees what is due and what is stuck. SuryaHub does not file with the DISCOM for you, and it is pre-revenue; the real pilots are Suryantra Energy and RGESPL. Figures here are scheme estimates, not guarantees.
Track all three Delhi DISCOMs in one place
See how SuryaHub runs net-metering steps from feasibility to meter.
Related guides
Frequently asked questions
How do I apply for net metering in Delhi?+
To apply for net metering in Delhi, find which DISCOM serves the site, register on its portal with the CA number, enter the system size within your sanctioned load, and upload the single-line diagram and equipment details. The DISCOM runs feasibility, issues the agreement, then installs a bidirectional meter at commissioning.
Which DISCOMs run net metering in Delhi?+
Net metering in Delhi is run by three DISCOMs: BRPL and BYPL, both under BSES, and TPDDL under Tata Power. DERC is the regulator for all three. Apply to the DISCOM that serves the site, and verify the current process and portal with that DISCOM and DERC.
What is the DERC time-block rule for net metering?+
DERC has used a time-block settlement approach, where export and import are netted within defined time blocks rather than as a single monthly total. This rule affects how much credit a customer gets, and it changes with DERC orders, so verify the current time-block settlement rule with your Delhi DISCOM and the DERC regulation.
How long does net metering take in Delhi?+
Delhi net metering commonly takes a few weeks from a clean application to a sealed meter, but it depends on feasibility and meter supply. The Rights of Consumers Rules and DERC set target timelines. Timelines are an estimate, so verify the current commitment with your Delhi DISCOM and the DERC regulation.
What fees do Delhi DISCOMs charge for net metering?+
Delhi DISCOMs charge a processing fee and the cost of the bidirectional meter, set under the DERC tariff order. These amounts change with each DERC revision, so treat any figure as an estimate and verify the current fee and meter cost with your DISCOM and the DERC regulation before you quote a customer.
How does SuryaHub help with Delhi net metering?+
SuryaHub tracks every Delhi DISCOM application across BRPL, BYPL and TPDDL, with documents, feasibility results and meter dates in one workflow so nothing stalls. SuryaHub does not file with the DISCOM for you and is pre-revenue; real pilots are Suryantra Energy and RGESPL. Always confirm rules with the DISCOM and DERC.
Sources & references
The rules, capacity, the time-block, fees and timelines on this page come from primary sources. Delhi net-metering figures change with each DERC order — always confirm the current figure with your DISCOM and the DERC regulation before you apply.
- Delhi Electricity Regulatory Commission (DERC) ↗
The regulations that set capacity, the metering model, the time-block rule and tariffs.
- BSES (BRPL & BYPL) and Tata Power DDL ↗
The Delhi DISCOMs that run the rooftop solar process and portals.
- Ministry of Power ↗
The Electricity (Rights of Consumers) Rules that frame deemed feasibility.
Written by the SuryaHub team · reviewed against DERC, Delhi DISCOM & Ministry of Power sources · updated 19 June 2026.
Method: Process and figures are taken from the Delhi DISCOM portals and DERC regulations above and re-checked every 30 days. Capacity, fees, DT loading, the time-block rule and timeline are estimates that move with DERC orders — verify the current figure with your DISCOM and DERC. SuryaHub is pre-revenue; only Suryantra Energy and RGESPL are real pilots.
Change log: 19 Jun 2026 — first published.