What is Net Metering

Net Metering Is the Financial Engine of Residential Solar in India

Ask a homeowner why they want solar and the answer is almost always "to reduce my electricity bill." Net metering is the regulatory and technical mechanism that makes that reduction happen. Without a functioning net metering connection, a rooftop solar system is simply a source of daytime electricity with no bill-saving effect beyond what the household consumes in real time.

For an on-grid solar installer, net metering is not just a technical detail, it is the central value proposition in every residential sale you make. This guide covers the definition of net metering, the mechanics of how it works, India's regulatory framework under the central Rights of Consumers Rules and each state's SERC, state-by-state differences, the link to PM Surya Ghar, and what you need to know to become the installer customers trust to handle the entire grid connection process.

This is a pillar post. Read it once, save it, and share it with your team.

What Net Metering Means, The Precise Definition

Net metering is a billing mechanism under which a prosumer (a consumer who also produces electricity) exports surplus solar generation to the distribution grid during the day, and imports electricity from the grid when solar production is insufficient (evenings, cloudy days). The DISCOM installs a bi-directional meter that records both import and export. At the end of the billing cycle, only the net difference, units imported minus units exported, is billed at the applicable consumer tariff.

If a consumer exports more than they import over the billing cycle, the surplus can be:

• Carried forward as kWh credit to the next month (most states)
• Settled at a Feed-in Tariff (FiT) rate at year end (some states)
• Reset to zero at the end of the settlement period (West Bengal's net metering does this)

This is distinct from gross metering, where all solar generation is exported to the grid at a FiT rate, and all household consumption is imported from the grid at the consumer tariff. See our detailed comparison in net metering vs gross metering.

For a worked example of how import and export units settle on an actual bill, see import vs export units in net metering.

How the Bi-Directional Meter Works

The technical heart of net metering is the bi-directional (or smart) meter, and understanding how the bi-directional meter is installed helps installers set correct expectations with customers before the DISCOM visit. It replaces the consumer's existing single-direction energy meter and records two separate registers:

• Register 1 (Import): Electricity consumed from the grid, measured in kWh
• Register 2 (Export): Electricity sent to the grid from the solar system, measured in kWh

During a sunny day, the solar system typically produces more than the home consumes, the surplus flows backwards through the meter and Register 2 increments. At night, the home imports from the grid and Register 1 increments. The meter does not "spin backwards" in the old mechanical sense, it separately accumulates each direction and the DISCOM reads both registers at billing time.

What the bill looks like:

An illustrative customer with a 3 kW solar system in Surat (Gujarat) in June might have:

• Solar generation: 420 kWh
• Direct self-consumption (used at time of generation): 180 kWh
• Export to grid (Register 2): 240 kWh
• Import from grid (Register 1): 160 kWh
• Net bill = 160 kWh imported - 240 kWh exported = -80 kWh (credit)

In many states a credit like this carries forward to the next billing month; check your state's rule before you promise it to a customer.

The Net Metering Credit Equation

The financial outcome of net metering can be modelled with a single equation, the Net Metering Credit Equation:

Net Monthly Bill = (Import Units × Grid Tariff) − (Export Units × FiT Rate)

Where:

• Import Units = electricity purchased from the grid (kWh)
• Grid Tariff = consumer's applicable slab tariff (₹/kWh)
• Export Units = solar electricity sent to the grid (kWh)
• FiT Rate = Feed-in Tariff, i.e., the rate the DISCOM pays for exported solar energy (₹/kWh)

If the result is negative, the consumer has a net credit. If positive, they owe the DISCOM that amount. Installers who want to show customers this math instantly rather than doing it by hand can lean on a net metering savings calculator during the site survey.

Worked example (illustrative, with assumed rates, not a Maharashtra tariff): For a walkthrough of how MSEDCL itself handles the application end to end, see MSEDCL's net metering process.

• Import units: 200 kWh @ ₹8.50/kWh = ₹1,700
• Export units: 280 kWh @ an assumed ₹3.50/kWh credit rate = ₹980
• Net bill = ₹1,700 − ₹980 = ₹720

Without solar (same 200 kWh imported + would have imported 280 kWh more): bill would have been 480 kWh × ₹8.50 = ₹4,080. Monthly saving: ₹4,080 − ₹720 = ₹3,360/month.

Note: In states where net metering is settled purely on a unit basis (credit at the same tariff rate, not a separate FiT rate), the equation simplifies to: Net bill = (Import Units − Export Units) × Grid Tariff.

India's Net Metering Regulatory Framework

Net metering in India operates under a two-tier regulatory structure:

Central Level, the Rights of Consumers Rules

The Ministry of Power's Electricity (Rights of Consumers) Rules, 2020, as amended on 22 Feb 2024 (G.S.R. 125(E)), give the national frame for rooftop solar connections. The key provisions in rule 11 are:

• Net metering, gross metering, net billing and net feed-in follow the State Commission's regulations. Where they do not provide for net metering, the Commission may allow it for loads up to 500 kW or the sanctioned load, whichever is lower (rule 11(4), as substituted in 2021)
• Applications up to 10 kW, complete in all respects, are deemed accepted without a feasibility study; above 10 kW the study is due within 15 days or the proposal is presumed feasible (rule 11(7) and (7A))
• The DISCOM completes the agreement, meter installation and commissioning within 15 days of the installation certificate (rule 11(9))
• Compensation of not less than ₹500 a day for delay without just cause (rule 11(12), 2020 Rules)

Read the Gazette copy of the 2024 amendment. Safety requirements for the inverter, including anti-islanding protection in solar inverters, are covered separately in the installation standards.

State Level, SERCs

Each state's State Electricity Regulatory Commission (SERC) sets the detailed rules through its own regulations and orders, which determine, and installers who work across multiple states often keep the state-by-state DISCOM net metering process handy for quick reference:

• The net metering capacity limit per consumer (e.g., Maharashtra: 5 MW or contract demand or sanctioned load; West Bengal: 500 kW; Telangana: 500 kWp; Gujarat's 2026 regulations: 1,000 kW AC)
• The Feed-in Tariff rate for surplus export
• The billing settlement period (monthly vs quarterly vs annual)
• Documentation requirements for the net metering application
• Whether surplus credits carry forward or lapse

The MNRE (Ministry of New and Renewable Energy) issues the guidelines for PM Surya Ghar scheme installations. See mnre.gov.in for the latest circulars.

Net Metering vs Gross Metering Regulatory Divide

Each SERC decides which arrangements it offers and to whom. West Bengal's 2025 regulation, for example, lets a prosumer opt for net metering, net billing or gross metering. Installers operating in Tamil Nadu should consult TANGEDCO's net metering guide for the current category-wise rules. Installers must verify current state policy before advising customers on financial projections. See our full post on net metering vs gross metering for a detailed state-by-state comparison.

State-Wise Net Metering Tariffs and Limits

This is the data that every installer should have at their fingertips. The table shows net metering limits and surplus rules from each regulator's own text (checked 31 October 2026). "Not verified" means we could not open a current official document, so we show no figure:

Sources: GERC DRES Regulations, 2026; MERC First Amendment, 2023 (Statement of Reasons, 16 Nov 2023) and order of 25 Mar 2026; TGERC Regulation 1 of 2025; WBERC Regulations, 2025; WBSEDCL Procedure-C (2025). Rules change, so always verify with the latest SERC order before presenting projections to customers.

Net Metering Capacity Limits Across India

PM Surya Ghar and Net Metering, The Connection

PM Surya Ghar Muft Bijli Yojana is the national scheme providing subsidy for rooftop solar installations, ₹30,000/kW for the first 2 kW, ₹18,000/kW for the third kilowatt (up to 3 kW total, max subsidy ₹78,000 for 3 kW). See our full PM Surya Ghar guide and subsidy calculation guide.

Every PM Surya Ghar installation connects to the grid through a DISCOM metering arrangement. Under the July 2025 guidelines:

1. The system must be on-grid solar; batteries may be added, but the subsidy counts module capacity only
2. Any metering arrangement approved by the State Commission is covered, and the net meter is provided by the DISCOM or bought by the consumer from enlisted meter vendors (clause 6(l))
3. The subsidy is processed only after the DISCOM has physically verified the system and completed the process on the portal (clause 6(k))

The application flow (via pmsuryaghar.gov.in) shows the DISCOM's feasibility, inspection and approval as stages on the national portal. Once the DISCOM approves, the guidelines say the subsidy is processed within 15 days (clause 6(t)).

For installers, this means that your net metering competency directly determines how quickly your customers receive their subsidy, which in turn affects your relationship, referral rate, and payment cycle. See our PM Surya Ghar application process guide for the full workflow.

The Net Metering Application Process, Overview

The full process is covered step by step in our guide on how to apply for net metering in India. Here is the overview:

1. 1
   Application and feasibility: In most state processes the application comes first. Up to 10 kW, a complete application is deemed accepted without a feasibility study; above 10 kW, the study is due within 15 days (central Rights of Consumers Rules).
2. 2
   Installation complete, certificate submitted: The system is physically installed but NOT energised, with earthing, cabling and inverter wiring complete. For PM Surya Ghar, the paperwork goes via pmsuryaghar.gov.in; otherwise via the DISCOM portal or office. Documents typically include the SLD, earthing certificate, inverter specs, module specs and installation photos.
3. 3
   DISCOM inspection: A DISCOM technical officer visits to inspect the installation for compliance with earthing, anti-islanding, and metering requirements. Time limits are set by the state (West Bengal: within 10 days of the installation certificate; Telangana: within 15 working days of the work completion report), and the net metering application timeline breaks down the written limits state by state.
4. 4
   Bi-directional meter installed: DISCOM replaces the existing meter with a bi-directional smart meter. This triggers the start of net metering billing.
5. 5
   Net metering agreement signed and system commissioned: The net metering agreement is executed between the consumer and the DISCOM, and under the central Rules the DISCOM completes the agreement, meter and commissioning within 15 days of the installation certificate. Do not switch the system on before the DISCOM allows it.

See the DISCOM approval process for the written time limits state by state.

Net Metering vs Gross Metering, Quick Comparison

For the full comparison with financial modelling, read net metering vs gross metering.

Common Customer Misconceptions About Net Metering

Every installer faces these questions from customers. Here are accurate answers:

"My meter will spin backwards and I'll get a negative bill." Modern bi-directional digital meters do not spin backwards. They track import and export separately. The DISCOM will not issue a negative bill; excess credits carry forward to the next month or are settled under your state's rule (West Bengal resets leftover net-metering units to zero).

"I need to store my solar energy in a battery." With net metering, the grid acts as your virtual battery. Surplus production is stored as credit on your meter. You do not need physical battery storage for the financial benefit of solar to work. Battery storage adds cost and complexity, for most urban residential consumers with stable grid supply, it is optional.

"I'll get paid for all the electricity my panels produce." Under net metering, you only get credit for surplus production, what you don't use yourself. The self-consumed portion directly offsets your bill at the full grid tariff rate, which is more valuable than the FiT rate. Under gross metering, you export everything, but at the FiT rate, not the retail tariff.

"The DISCOM will disconnect me if I export too much." A DISCOM's concern is capacity: it can reject a net metering application if the proposed system capacity exceeds the consumer's sanctioned load or the state's limit, a common rejection reason. Reviewing the common net metering rejection reasons before submission helps installers avoid the most frequent DISCOM pushback. Always check sanctioned load before sizing.

Benefits for EPC Installers, Net Metering as a Business Strategy

Net metering competency is not just a technical requirement, it is a business differentiator. Here is why installers who own the end-to-end net metering process outperform those who don't:

1. Customer retention through the DISCOM process. Many customers have no idea how to navigate the DISCOM process. Installers who manage the net metering application on behalf of the customer stay in touch with them through the weeks after installation, which is when satisfied customers tend to refer friends and family.

2. Upsell opportunities during grid connection. When you're handling paperwork and visiting the DISCOM, you often discover adjacent opportunities: the customer's neighbour is curious, the housing society wants to go solar (check whether virtual or group net metering is allowed in your state first), the customer's office building needs a quote. A net metering visit is a natural moment to ask for referrals, and lead capture lets you record each one.

3. Premium pricing justification. An installer who says "we handle everything including net metering application, DISCOM inspection coordination, and subsidy paperwork" can justify a separate service line in the quote compared with installers who leave these steps to the customer.

4. Faster subsidy disbursement = faster payment. For PM Surya Ghar projects, many installers structure their payment in tranches, final payment on subsidy receipt. Installers who manage net metering efficiently can reach final payment sooner than those who leave the process to the customer.

Pros and Cons of Net Metering for Your Customers

How Quickest Solar CRM Helps Installers Win More Net Metering Projects

Picture an illustrative EPC team in Surat handling several installations a month. If it tracks which customers are at the "net metering application submitted" stage versus "DISCOM inspection scheduled" stage through a shared WhatsApp group and daily calls to the office team, things fall through the gaps, customers call asking for status updates, and DISCOM inspection windows get missed.

Quickest Solar CRM's pipeline management lets you set customisable lead stages such as Lead → Site Survey → Proposal Sent → Order Confirmed → Installation → Net Metering Application → DISCOM Inspection → Commissioned → Subsidy Disbursed, add labels, and set follow-up reminders on each lead. Team members work from the same lead list. You can also share the proposal PDF on WhatsApp and keep saved message templates for status updates.

The proposal generator applies the PM Surya Ghar subsidy in the branded proposal PDF, which carries your logo, items, terms and conditions. Add your own savings table using the credit equation above, with your state's current rates.

For solar lead management, you can add leads as they come in and bulk import from Excel, so a referral that arrives while your team is on a DISCOM visit is recorded. Book a demo to see how this works in practice.

What to Do This Week

If you're actively selling solar in India but don't yet have a documented net metering workflow, this week is the time to build one. Here is a concrete starting point:

1. List every DISCOM you work with. For each, find the current net metering application form URL, the surplus rule, and the written time limits. Use our DISCOM net metering list as your starting reference.
2. Create a one-page customer handout explaining the Net Metering Credit Equation with your state's actual ₹/kWh numbers. Use it in every site survey.
3. Add net metering application handling to your proposal as an explicit service line, price it as a visible line in the quote, at a level your market accepts.
4. Set up Quickest Solar CRM's pipeline management to track every deal from lead to subsidy disbursement, try it free.
5. Read our step-by-step guide to how to apply for net metering in India and our DGVCL net metering guide if you're operating in Gujarat.

Net metering is not a complication in your sales process. It is the proof that solar works. Installers who treat it as a core competency, not an afterthought, are the ones building sustainable, referral-driven businesses.

Frequently Asked Questions

Q: What is net metering in India? A: Net metering is a billing mechanism that allows rooftop solar consumers to export surplus electricity to the grid and receive a credit against units imported from the grid. Only the net difference (imports minus exports) is billed at the applicable tariff. It is set by each State Commission's regulations, within the central Electricity (Rights of Consumers) Rules.

Q: Is net metering available for all residential solar systems in India? A: Generally yes, where the State Commission's regulation provides for it, subject to the state's capacity limit and the consumer's sanctioned load. Where a state's regulations do not provide for net metering, the central Rights of Consumers Rules let the Commission allow it for loads up to 500 kW or the sanctioned load, whichever is lower.

Q: What is the FiT (Feed-in Tariff) rate for net metering in India? A: It varies by state, and we could not verify every state, so we show only what we confirmed. West Bengal's 2025-26 feed-in tariff for net billing and gross metering is ₹4.37 per kWh (L&MV), ₹3.89 (HV) and ₹3.73 (EHV); its net metering resets leftover units to zero. Telangana settles exports above imports every month at the lowest solar PPA tariff of the preceding year. We have not verified current rates for Gujarat, Maharashtra, Karnataka or Delhi. Exported units are generally worth less than the consumer's grid tariff, which is why right-sizing the system to match consumption is usually the better advice.

Q: How long does net metering approval take in India? A: Under the central Rights of Consumers Rules, applications up to 10 kW are deemed accepted without a feasibility study, the study above 10 kW is due within 15 days, and the DISCOM must complete the agreement, meter and commissioning within 15 days of the installation certificate. States add their own limits. We could not source reliable real-world averages. See our DISCOM approval process for the written limits by state.

Q: Can I get net metering without the PM Surya Ghar subsidy? A: Yes. Net metering is available for any on-grid rooftop solar system, regardless of whether the consumer has applied for PM Surya Ghar subsidy. The application goes directly to the DISCOM rather than through the national portal.

Q: What documents are needed for a net metering application? A: The usual documents are (lists differ by state): single-line diagram (SLD), module technical specifications, inverter technical specifications, earthing certificate, installation photographs, and the consumer's electricity account details. See our full guide on how to apply for net metering in India.

Q: What happens to excess credits in net metering, do they expire? A: It depends on the state. West Bengal's net metering carries credits forward within the settlement period (generally 1 April to 31 March) and resets leftover units to zero at the end. Telangana settles exports above imports monthly at a notified rate. Check your State Commission's regulation for the rule and the settlement date.

Q: Is net metering available for commercial solar installations in India? A: In the states we verified (Telangana, West Bengal, Maharashtra), net metering is open to non-residential consumers too, within the capacity limit. Limits, rates and documentation requirements differ from residential, and some states offer net billing or gross metering instead. Check the state SERC regulation for your commercial consumer category.

Q: How does net metering affect my electricity bill calculation? A: Use the Net Metering Credit Equation: Net Bill = (Import Units × Grid Tariff) − (Export Units × FiT Rate). If the result is negative, you have a credit for the next month. If positive, that is what you owe. In high-generation months (summer in India), most 3 kW+ systems produce net credits.

Q: What is the difference between net metering and a solar battery system? A: With net metering, the grid acts as your virtual battery, you export surplus during the day and import at night, with billing settled on a net basis. A physical battery stores your own surplus for use at night without grid interaction. For most grid-connected homes, net metering usually gives better returns than adding a battery, because the battery adds to the upfront cost while the grid does the storing. Compare both against your quote.