Net Metering in India, Complete 2026 Guide

Qbits warranty and service terms: Qbits public datasheets describe an expandable warranty but do not define a universal duration, remedy, registration deadline, service SLA, or exclusions. Obtain the current written terms for the exact model and sale before relying on a headline claim.

ALMM and inverter compliance: MNRE’s current ALMM page publishes solar PV module and cell lists, not an inverter list. Verify the inverter’s exact model documents and applicable scheme or DISCOM requirements separately.

When your rooftop solar produces more than your household consumes, that surplus either goes to waste or earns you money. In India, net metering ensures it earns you money. The mechanism is simple. The state-by-state regulation is not: it decides how much your exported units are worth, how fast your DISCOM processes the application, and what happens to credits at year-end.

This isn’t academic. Net metering is the policy lever that turns a ₹1.5–₹3 lakh rooftop investment into a 4–7 year payback, and it’s a prerequisite for the PM Surya Ghar subsidy up to ₹78,000 on a 3 kW system.

Net metering in India credits surplus rooftop solar you export to the grid against your import, so you pay only for the net difference on your monthly bill. A 3 kW system on a typical Indian home with good sun hours and net metering at retail tariff can offset ₹800–₹1,500 per month in electricity costs, cutting a ₹2,000 bill to near zero and delivering full payback in 4–7 years. This guide covers state-wise DISCOM rates, the application process, and the Net Metering ROI Stack framework for calculating your true benefit.

Net metering is enabled by a bidirectional meter that records energy flowing in both directions, import from the grid and export from your solar panels. The DISCOM reads both registers and subtracts export from import each billing cycle. For a full technical overview of how the mechanism is structured, the net metering glossary entry covers definitions, meter specifications, and state regulatory variations in detail.

What Is Net Metering and How Does It Work in India

Net metering in India is a billing mechanism authorised by the Electricity Act 2003 and operationalised by State Electricity Regulatory Commissions. Each state’s SERC notifies its own net metering regulation, covering eligible system sizes, export credit rates, settlement periods, and year-end credit treatment. The Central Electricity Regulatory Commission (CERC) provides the overarching framework; state SERCs translate it into local rules.

The physical mechanism involves three components: your rooftop solar array, an on-grid inverter that converts DC solar power to grid-compatible AC, and the bidirectional smart meter installed at your service connection.

Here is how the electricity flows in practice:

1. Solar generates DC: panels on the roof convert sunlight to direct current. Output varies with irradiance, temperature, and panel quality.
2. Inverter converts to AC: the on-grid inverter synchronises with the grid frequency (50 Hz in India) and converts DC to AC at 230 V (single-phase) or 415 V (three-phase).
3. Household loads consume first: AC power from the inverter flows to lights, fans, refrigerators, and air conditioners. Solar offsets grid consumption in real time.
4. Surplus flows to the grid: when solar generation exceeds household load (typically midday), the excess flows backwards through the meter and into the distribution feeder.
5. Bidirectional meter records both: the meter logs cumulative import kWh and cumulative export kWh separately, with timestamps where AMI is active.
6. DISCOM calculates net: at each billing cycle, the DISCOM subtracts export from import. You pay the applicable tariff on the net units consumed.
7. Credits carry forward: if monthly export exceeds import, the surplus credit rolls forward to the next billing cycle, typically within the same financial year.
8. Annual settlement: at year-end (31 March in most states), residual credits are either lapsed, paid out at pooled cost, or carried forward, depending on the state regulation.

The anti-islanding protection built into the inverter (required under IEC 62116) ensures that during a grid outage, the inverter stops exporting within milliseconds. This is a mandatory safety requirement, it prevents your system from accidentally energising a dead distribution line and putting maintenance workers at risk.

33.41 GW. India’s grid-connected rooftop solar capacity on 30 September 2026, out of 171.05 GW total installed solar. Net metering is the billing mechanism that lets rooftop owners offset their consumption. Source - MNRE capacity data for 30 September 2026, as reported by Saur Energy, 8 October 2026.

Net Metering Rates Across 8 Major DISCOMs in India

Export credit rates are where state-level variation cuts most sharply into your returns. Some states credit exports at the full retail tariff (whatever you would have paid to import a unit) while others credit at a lower “avoided cost” or average pooled power purchase cost (APPC). The gap between retail-rate and APPC crediting can change the payback period of a system by several years, depending on how much you export (it is a formula, not a fixed number: exported units times the rate gap, divided into your yearly savings).

The table below covers the eight DISCOMs most commonly searched by homeowners considering solar and names the regulator whose order sets the export credit rate and settlement rules for each. Credit rates and size limits change with each tariff order, so this guide does not quote them: read the current order for your state before finalising your system design.

Reading the table: states differ on whether exports are credited at the full retail tariff or at a lower pooled power purchase cost (APPC), on the maximum size, and on whether unused credits are carried forward, lapsed or paid out at year end. Retail-rate crediting makes every exported unit erase an equivalent import cost; APPC crediting values exports lower and lengthens payback. Ask your DISCOM which rule applies to your category and size before you compare quotes.

₹78,000. The maximum central subsidy under PM Surya Ghar Muft Bijli Yojana for a 3 kW residential system, disbursed directly to the buyer’s bank account after DISCOM commissioning, which includes bidirectional meter installation and net metering activation. Source - PM Surya Ghar Portal, 2026.

The Net Metering ROI Stack: A 4-Layer Savings Model

Most solar calculators show only the bill savings from self-consumption, useful for a quick first-pass number (a solar savings calculator gives you one in minutes) but not the full financial picture. The Net Metering ROI Stack is a 4-layer model that shows how individual savings levers compound into your true payback period. Apply all four layers before accepting any vendor’s quoted payback number.

Layer 1: Reduced Import Units

The first and largest savings lever. Every unit your solar system generates during the day that you consume directly is a unit you do not buy from the grid. On a typical Indian home consuming 400 kWh/month and a 3 kW system generating 360–420 kWh/month (with 5–5.5 peak sun hours), 60–75% of consumption can be offset by direct solar. At an average retail tariff of ₹6/unit, that is ₹1,300–₹1,800 saved monthly through reduced import alone.

Layer 2: Export Credits

The second layer captures the value of solar power you generate but do not immediately consume, midday surplus during weekday office hours, for instance. A household that is largely empty from 10 AM to 5 PM exports a significant fraction of its solar generation. At retail tariff crediting (BESCOM, MSEDCL, TSSPDCL), those exported units return as bill credits at the same rate you would have paid. At APPC-rate states, credits are worth less per unit but still accelerate payback.

Layer 3: Depreciation Benefit

Solar systems qualify for accelerated depreciation under the Income Tax Act, 40% in the first year under Section 32 for businesses and self-employed professionals. For a residential homeowner, this layer does not apply directly. But for any taxpayer running a home office, a professional practice, or renting out the property, the depreciation deduction reduces the effective capital outlay. Our detailed breakdown of solar inverter depreciation in India covers the calculation for each category.

Layer 4: PM Surya Ghar Subsidy

The fourth layer is a one-time upfront offset that directly reduces your capital cost before the payback clock starts. The central subsidy under PM Surya Ghar is structured as:

• 1 kW system: ₹30,000 subsidy
• 2 kW system: ₹60,000 subsidy
• 3 kW system: ₹78,000 subsidy
• Above 3 kW: ₹78,000 fixed (no additional for the incremental capacity)

On a 3 kW system costing ₹1.5 lakh installed, the ₹78,000 subsidy reduces the effective outlay to ₹72,000. Combined with Layers 1 and 2 savings of ₹1,500–₹2,500 monthly (depending on state), payback falls in the 2.5–4 year range for net metering states with retail tariff crediting.

The compounded effect: a homeowner in Bengaluru (BESCOM, retail tariff crediting) who claims the PM Surya Ghar subsidy, installs a right-sized 3 kW system, monitors generation actively (Layer 1 and 2 optimisation), and is a salaried professional is looking at a 3–4 year payback. The same homeowner in a state with APPC-rate crediting and no subsidy claim may see 6–8 years. The Net Metering ROI Stack quantifies that difference before the PO is raised.

For a detailed numerical payback analysis by system size, tariff slab, and state, see our solar inverter payback period guide.

Net Metering vs Gross Metering vs Battery Storage: When Each Makes Sense

Not every rooftop solar customer in India operates on the same consumption profile or lives in a state that offers retail-rate net metering. The right billing and storage strategy depends on three variables: your self-consumption ratio, your state’s policy environment, and your priority (bill elimination vs grid independence).

The on-grid vs hybrid inverter ROI comparison goes deeper on the financial trade-off between a net-metered on-grid system and a hybrid-with-battery configuration.

Pros and Cons: Net Metering vs Battery Storage

Net Metering

• ✓ Lowest system cost, no battery capex

• ✓ Fastest payback (4–7 years in active states)

• ✓ Subsidy-eligible under PM Surya Ghar

• ✓ No battery degradation or replacement cost

• ✓ Works well for daytime-heavy households

• ✗ Zero backup when the grid is down

• ✗ Export value varies by state (APPC vs retail)

• ✗ Year-end credits may lapse in some states

• ✗ Requires DISCOM approval and meter installation (30–90 days)

• ✗ DISCOM billing errors possible, monthly audit needed

Battery Storage (Hybrid System)

• ✓ Full backup during power cuts

• ✓ Self-consumption rises to 90%+ - less grid dependence

• ✓ Evening and night loads covered by stored solar

• ✓ Protection from rising tariffs

• ✗ Battery adds ₹60,000–₹2,50,000 to capex

• ✗ LFP batteries degrade 2–3% per year; replacement in 8–12 years

• ✗ Longer payback (8–12 years all-in)

• ✗ More complex commissioning and monitoring

Getting the battery bank sizing right before quoting a hybrid system is what separates a genuinely useful backup from a battery that is either too small to matter or too large to pay back.

For households in states with frequent outages (parts of Uttar Pradesh, Bihar, and Jharkhand) the hybrid system with battery makes practical sense even at higher cost, because the backup value is real and immediate. For households in Gujarat, Karnataka, and Maharashtra with reliable grids, net metering alone delivers superior economics.

How to Apply for Net Metering in India: Step-by-Step Process

The application process is governed by your state’s SERC net metering regulation and, for PM Surya Ghar subsidy cases, the PM Surya Ghar national portal. The two processes run in parallel but have separate steps.

1. Check sanctioned load: Your sanctioned load on the electricity bill sets the maximum solar system size for net metering. Most states allow up to the sanctioned load in kW. If you want a 5 kW system but your sanctioned load is 3 kW, apply for a load enhancement first. This adds 30–60 days but avoids application rejection.

2. Register on PM Surya Ghar portal: If claiming the central subsidy, register at pmsuryaghar.gov.in. The portal auto-routes your application to the relevant state nodal agency and DISCOM. Upload identity proof, address proof, electricity bill, and bank account details.

3. DISCOM technical feasibility study (TFS): The DISCOM’s distribution engineer assesses whether the local feeder can absorb the proposed solar capacity without voltage rise, frequency deviation, or protection relay issues. The TFS typically takes 7–21 days. If the feeder is already at capacity, the permissible size may be reduced. Get the TFS in writing.

4. Install the solar system: Once the TFS is approved, commission the installation through an empanelled vendor. Do not commission and switch on the system before DISCOM approval, some DISCOMs reject post-installation applications.

5. DISCOM site inspection and commissioning: A DISCOM engineer visits to verify the installation matches the approved single-line diagram, confirms the anti-islanding test, and seals the system. Record the meter seal numbers and get the commissioning report in writing.

6. Bidirectional meter installation: The DISCOM replaces (or supplements) the existing meter with a bidirectional smart meter. Pay the applicable meter cost (₹2,000–₹15,000). The meter is configured with separate import and export registers. Verify both registers are active on the first bill.

7. PM Surya Ghar subsidy disbursement: After DISCOM commissioning data is uploaded to the portal, the central subsidy (and applicable state subsidy, if any) is credited directly to your registered bank account, typically within 30–60 days of commissioning.

8. First bill audit: Review the first three bills carefully. Confirm that export units are credited at the correct rate and that net billing is applied, not gross billing. Raise discrepancies in writing with the DISCOM’s consumer services team immediately.

For the solar inverter certifications relevant to the commissioning step (including IEC 62116 anti-islanding, IEC 61727, and BIS IS 16169) a dedicated post covers each standard and what the test certificate must state.

Eligibility Criteria and System Size Rules

Net metering eligibility in India is determined by three overlapping criteria: your connection category, your sanctioned load, and the state’s policy cap. Understanding each prevents application rejection.

Connection Category

Net metering is available to all connection categories, residential (LT domestic), commercial (LT commercial and HT), industrial (HT), and institutional (schools, hospitals, government offices). The export credit rate and maximum permissible system size often differ by category. Residential customers typically receive retail tariff crediting; large commercial and industrial customers may be restricted to APPC-rate crediting above a size threshold.

Sanctioned Load Rule

State-Level Caps

Individual state SERCs can impose absolute size caps independent of sanctioned load, and some change the export arrangement above a size threshold. These limits differ by state and change with tariff orders, so confirm the current figure in your SERC’s order or with your DISCOM before sizing.

The CEA’s net metering regulations and MNRE rooftop solar guidelines set the national framework; state-level caps are layered on top and can change with each annual tariff order.

Net Metering Compliance Requirements for Inverters

The inverter you select determines whether your net metering installation passes DISCOM inspection and qualifies for the PM Surya Ghar subsidy. Three compliance layers matter.

Anti-Islanding Compliance: IEC 62116

IEC 62116 specifies the test procedure for anti-islanding protection. Every grid-tied inverter in India must pass this test. Without a valid IEC 62116 certificate, the DISCOM’s commissioning engineer may refuse to sign off the installation. The solar inverter regulations guide for 2026 covers the full certification stack including IEC 62116, IEC 61727, and BIS IS 16169.

BIS and IEC Compliance

BIS certification under IS 16169 (for on-grid inverters) and the relevant IEC standards confirm product safety and grid interconnection performance. These certificates must be submitted with the DISCOM application in most states.

• BIS IS 16169: Indian standard for grid-connected solar inverters
• IEC 61727: Photovoltaic systems: Characteristics of the utility interface
• IEC 62116: Utility-interconnected PV inverters: Anti-islanding test procedure

For a complete breakdown of which certifications the solar inverter certifications post covers each standard and what the certificate must state.

Common Mistakes That Delay or Derail Net Metering Applications

Most net metering application failures are procedural, not technical. The following errors account for the majority of DISCOM rejection notices and commissioning delays.

• Installing before applying: Commissioning a system and then applying for net metering exposes you to rejection if the feeder is at capacity or if the DISCOM’s process requires pre-approval. Always get the TFS cleared before the installation team mobilises.

• Oversizing relative to sanctioned load: A 10 kW system on a 5 kW sanctioned load will be rejected without a load enhancement. The DISCOM will not simply approve a smaller portion, the entire application is returned.

• Missing anti-islanding documentation: If the inverter’s IEC 62116 certificate cannot be produced at DISCOM inspection, the commissioning engineer cannot sign off. This is the single most common technical hold-up.

• Not auditing the first bill: DISCOM billing software misconfiguration is common in the first one to three bills of a new net metering connection. Export register reading as zero, credit applied at wrong rate, or gross billing instead of net billing are all documented DISCOM errors. The solar inverter monitoring systems guide covers how to set up generation monitoring so you can cross-check DISCOM readings against your own inverter logs.

• Assuming credits roll over indefinitely: In states where year-end residual credits lapse, design the system to maximise self-consumption rather than banking on year-end payouts.

• Ignoring reactive power settings: DISCOMs in some states charge a reactive power penalty for poor power factor. A correctly configured inverter injects reactive power to maintain unity power factor at the metering point, avoiding the penalty. Ask your installer to confirm this at commissioning.

For the full technical solar inverter integration guide covering grid synchronisation, anti-islanding, and DISCOM interface requirements, that post goes into the engineering detail behind each compliance requirement.

Net Metering and PM Surya Ghar: How the Subsidy Connects

PM Surya Ghar Muft Bijli Yojana, launched in February 2024, is India’s largest residential solar subsidy programme. It targets 10 million homes with rooftop solar by 2027 and is the policy context in which most residential net metering applications in 2026 are submitted.

The subsidy amount, timing, and documentation requirements are directly linked to net metering commissioning. Here is how the two processes interact:

• The PM Surya Ghar portal is the primary registration and subsidy-routing channel for residential customers.
• DISCOM commissioning (including bidirectional meter installation and net metering activation) is the trigger event for subsidy release.
• Subsidy is disbursed in two instalments in some states: a portion on system installation and the balance on DISCOM commissioning.
• The central subsidy is ₹30,000/kW for the first and second kW and ₹18,000 for the third kW, capped at ₹78,000 for 3 kW and above.
• State-level additional subsidies (available in Gujarat, Madhya Pradesh, Kerala, and others) are disbursed separately through state nodal agencies.

The pm-surya-ghar glossary entry covers eligibility criteria, income limits, and the state-by-state list of nodal agencies for state top-up subsidies.

Where Qbits Fits in Your Net Metering Setup

A net metering installation is only as reliable as the inverter at its heart. The inverter must synchronise precisely with the grid, switch off within milliseconds of grid failure for anti-islanding, sustain 98% conversion efficiency across Indian ambient temperatures (25–55 °C), and report generation data that lets you audit DISCOM billing.

• Hybrid Inverters: Review current QBH model documents and confirm the exact battery, firmware, PV, backup-output, transfer, communication, warranty and project requirements in writing.

Contact Qbits with the site, load, equipment and document details relevant to this guide. Confirm the responsible party, deliverable, commercial scope and response time after submission.

Navigating DISCOM Delays and Disputes

The application-to-commissioning timeline is the most cited frustration in net metering. DISCOM delays compound at three specific stages, and knowing the escalation path reduces waiting time.

Technical Feasibility Study Delay

If the TFS takes longer than the stipulated 15–30 days (as specified in most state regulations), escalate in writing to the DISCOM’s nodal officer for PM Surya Ghar. For non-PM Surya Ghar cases, file a complaint with the Consumer Grievance Redressal Forum (CGRF). Citing the SERC regulation’s timeline provision in your escalation letter typically accelerates a response.

Smart Meter Stock-Out

Some DISCOM circles run out of bidirectional meter inventory, particularly during high-demand periods following subsidy announcements. In this situation, request a dated acknowledgement from the DISCOM confirming meter installation is pending on their side. This protects your subsidy eligibility and documents that the delay is not the customer’s fault.

Billing Error Resolution

If the first bill shows gross billing instead of net billing, or export units show as zero, raise a written complaint with the DISCOM’s billing department and attach your inverter’s generation log as evidence. If the DISCOM does not resolve within the prescribed period (varies by state, typically 7–30 days), escalate to the CGRF. Unresolved CGRF complaints can be taken to the state’s Electricity Ombudsman.

If the DISCOM’s bidirectional meter installation is delayed beyond the period in your state’s supply code, ask for the reason in writing and escalate through the same CGRF route.

For monitoring best practices that let you verify DISCOM readings against your own system data, the solar inverter monitoring systems guide covers both cloud-based and local monitoring options available with current Indian inverter hardware.