Solar Subsidy in West Bengal 2026, WBSEDCL + Central

Most pages about solar subsidy in West Bengal repeat the same three numbers and stop. The useful questions sit underneath those numbers. Does West Bengal actually add state money on top of the central assistance, and can you find the order that says so? Which metering arrangement will your utility give you, and at what sanctioned load does it change? How long does WBSEDCL have to inspect, quote, and synchronise? Two of the answers contradict what the national guides tell you, and one of them decides whether your export credits are worth anything.

This guide answers them from primary documents, then covers eligibility, documents, timings, a worked example, and why applications stall here. The central slabs come from the MNRE operational guidelines for PM Surya Ghar. The WBSEDCL process comes from its WBSEDCL PROCEDURES-C (2021) document, and the state regulator, WBERC, has since notified newer prosumer regulations that may change parts of it. Where a figure circulates without an official source behind it, this guide says so instead of repeating it.

Checked on 14 October 2026. We read MNRE’s guideline text and WBSEDCL’s Procedure-C PDF directly. We could not open pmsuryaghar.gov.in, and we could not read the final WBERC 2025 regulation text, so those points rest on trade-press summaries and are labelled that way.

Short version. Eligible West Bengal homes receive central assistance of ₹30,000 per kWp for the first 2 kWp and ₹18,000 for the third kWp, capped at ₹78,000, under MNRE PM Surya Ghar guidelines (2024). A state top-up was announced in July 2026 but no official notification is publicly traceable. Apply on the national portal, then follow your licensee’s current procedure for feasibility, metering, and synchronisation.

What the central subsidy pays in West Bengal

West Bengal is not a special category state under the scheme, so central financial assistance follows the standard national structure with no regional uplift. MNRE fixed the benchmark cost at ₹50,000 per kW for the first 2 kW and ₹45,000 for the additional kW, with effect from 13 February 2024. Assistance is 60% of the benchmark on the first 2 kWp and 40% on the third.

The resulting amounts, taken directly from MNRE’s own illustrations in the operational guidelines (2024):

Two details matter more than the headline. Assistance is calculated on rated DC module capacity, not inverter rating, per MNRE (2024). A pre-existing system that already drew assistance can only claim on the balance capacity up to 3 kW overall. Our national scheme guide covers the shared rules.

Does West Bengal add a state top-up, honestly

This is where competing pages guess, so here is the verified position. MNRE guidelines (2024) permit states to supplement the central assistance. That clause sets the test: any state subsidy component must be disbursed through the National Portal, and a signed MNRE-state MoU is mandatory before a top-up can be released under the scheme.

West Bengal launched PM Surya Ghar at the state secretariat in July 2026 and announced additional state assistance. Reported amounts are ₹5,000 above the central ₹30,000, ₹10,000 above ₹60,000, and ₹15,000 above ₹78,000, according to Energetica India (2026). The state set a target of 5 lakh households by March 2027 against a central target of 1 lakh.

We could not locate the underlying order on any West Bengal government domain, and WBSEDCL’s published subsidy pages do not carry those amounts. A second check on 14 October 2026 found installer guides that say there is no separate state top-up for homes, and no official source that confirms one. Figures for the Scheduled Caste and Scheduled Tribe grant conflict too. The 2026-27 state Budget announced ₹5,000 for SC and ST beneficiaries alongside a ₹100 crore rooftop allocation, according to Energetica India (2026), while later coverage reported ₹15,000.

Which utility you belong to decides everything

Your process is set by the licensee named on your bill, not by your district. West Bengal has several distribution licensees, and a form or timeline from one does not carry across to another. Vendors often show a Kolkata process to a consumer in Bankura, or the reverse. Check the bill first.

Everything below is the WBSEDCL route. If your bill names another licensee, ask it for its own approved procedure. Our DISCOM explainer sets out why the utility, not the state, controls interconnection.

The WBSEDCL application and feasibility route

WBSEDCL PROCEDURES-C (2021) is the connection procedure WBSEDCL published for solar PV under net metering and net billing. It was framed under regulation 16.9 of the WBERC renewable energy regulations as amended, and states an effective date of 1 January 2022. WBERC’s 2025 prosumer regulations require licensees to publish updated procedures and an online portal, so check WBSEDCL’s solar process page for the version in force. The steps below follow the 2021 procedure as the last version we could read in full.

1. Register on the national PM Surya Ghar portal with the consumer account number exactly as printed on your bill, and pick a vendor registered on the portal.
2. Submit Form S1 in duplicate to WBSEDCL, online or at the office that issues your energy bill, with the ₹500 plus GST application fee for LV and MV consumers.
3. Wait for the premises inspection. WBSEDCL gives at least 3 days notice and checks distribution transformer constraints and whether service alteration is needed.
4. Receive either a quotation with go-ahead clearance or a letter recording non-feasibility. The quotation is valid for 90 days, extendable once by 30 days on request.
5. Pay the quotation amount and submit the signed agreement in Form S2. WBSEDCL then issues a work order.
6. Install, then submit the work completion report in Form S3, a certificate of fitness, and Chief Electrical Inspector clearance or Form S4 self certification where supply voltage is below the notified voltage.
7. Clear the connectivity inspection, after which WBSEDCL installs the meter and synchronises the system.

One clause catches people out. Cumulative solar capacity on a feeder or distribution transformer cannot exceed 100% of that asset’s capacity, allocated first come first serve. A neighbour’s approval can therefore change your outcome. Our net metering walkthrough covers the national stages.

Net metering, net billing or gross metering: the 5 kW line and what replaced it

This is the section most West Bengal pages get wrong, and it changes the economics more than the subsidy does. MNRE guidelines (2024) cite the Electricity (Rights of Consumers) Rules, 2020, under which applications up to 10 kW are deemed accepted without separate technical feasibility approval (the PIB release on the February 2024 amendment explains the change). Many national guides stop there and imply 10 kW net metering everywhere.

In West Bengal the metering choice is set by the state regulator, not by the Rules. WBSEDCL PROCEDURES-C (2021) stated the position this way.

The procedure also caps installed capacity at your contract demand in kVA or sanctioned load in kW, exempting government-funded and scheme projects, and sets a floor of 1 kWp.

What changed in 2025. In August 2025 trade press (Energetica India, Mercom India) reported that WBERC had notified the Grid Interactive Rooftop Solar Photovoltaic System for Prosumers Regulations, 2025. The summaries report these provisions: prosumers may choose net metering, net billing or gross metering; capacity is limited to the sanctioned load or contract demand; systems up to 10 kW are approved without a feasibility study; the application fee is ₹1,000 for low and medium voltage connections; and installation must be completed within 180 days, extendable by 90 days. These come from news reports, not the gazette text, and the 5 kW rule above may no longer be the operative test. WBERC publishes the regulations on wberc.gov.in; ask WBSEDCL or CESC which arrangement they will give your connection and get the answer in writing.

Under either rule, raising your sanctioned load to fit a bigger array can change the metering arrangement offered to you, so settle the load and the arrangement together. Energy accounting follows Schedule-1 of the WBERC regulations for net metering and Schedule-2 for net billing, which settle exports on different bases.

One more clause matters before you expand later. Under Procedure-C (2021), an existing net-metered consumer who adds capacity is assessed afresh for eligibility. The old arrangement does not carry over automatically. Compare the mechanics in our net versus gross metering breakdown.

Eligibility and excluded categories

Central assistance is narrower than most quotes suggest. MNRE (2024) defines an eligible residential system as a grid-connected plant tagged to a particular residential connection of the local DISCOM, installed on a roof, terrace, balcony, or elevated structure. Building integrated PV qualifies. Group and virtual net metering qualify where the DISCOM approves the arrangement.

These are excluded from central assistance:

• Non-residential consumers, including government, commercial, and industrial segments.
• Off-grid installations. Behind-the-meter grid-connected systems can qualify, subject to state commission approval and a reverse power relay check.
• Installations using non-DCR modules in any form.
• A system relocated from another site, and any second claim on the same installation.

Group housing societies and resident welfare associations are treated separately. They receive ₹18,000 per kWp for common facilities including EV charging, up to 500 kWp at 3 kWp per house, and that connection must serve common facilities only.

Documents and what WBSEDCL will charge

Keep the portal set and the utility set separate, because different people check them at different stages. The portal needs your consumer account number, identity and address proof, a recent bill, roof ownership or permission evidence, bank account proof, and geo-tagged photographs after installation. WBSEDCL needs Form S1, then Form S2, Form S3, the fitness certificate, and Chief Electrical Inspector clearance or Form S4 self certification.

On costs, Procedure-C lists the application fee, the net or consumer meter and modem, the generation meter and modem, service alteration, and testing fees. Testing a consumer-procured solar generation meter costs ₹1,200 per meter. If a WBSEDCL-procured meter fails within 7 years without tampering, you are not charged for replacement. Our document checklist covers the portal side.

A realistic timeline, from the procedure itself

Procedure-C (2021) set outer limits for each stage. They are useful because a delay beyond them is a legitimate escalation, not a complaint about slow service. Track the dates yourself. For rooftop systems up to 10 kW the feasibility inspection row may no longer apply, because the amended central Rules and the reported 2025 WBERC regulations remove the feasibility study at that size.

MNRE (2024) then processes the assistance within 15 days of DISCOM approval, released through an e-token you redeem from your portal profile. Where you took a listed loan, the money goes to the loan account first. Nobody can promise an elapsed time for your application. Compare against our approval timeline notes.

The empanelled vendor requirement is not paperwork

MNRE guidelines (2024) state the scheme is implemented only through vendors registered on the National Portal, so a consumer must choose a registered vendor to receive assistance. WBSEDCL separately publishes an empanelled vendor list for its rooftop programme, with district coverage for each vendor.

Registration carries real obligations. Registered vendors must provide repairs and maintenance free of cost across the 5-year comprehensive maintenance contract period from commissioning, and must rectify any defect that blocks disbursal or commissioning. Registering authorities may de-register vendors and levy penalties after notice.

MNRE also confirms there is no government tendering or rate discovery, so prices are negotiated. That is why a written scope matters. Insist on separate line items for modules, inverter, structure, installation, metering, and taxes, with model numbers. Verify the installer using our vendor verification guide.

Worked example, subsidy arithmetic for a 3 kWp home

This is a worked example built only from published figures and stated assumptions. It is not a quotation or a prediction of any outcome for any reader.

Assumptions: a domestic WBSEDCL consumer, sanctioned load of 5 kW or less, a 3 kWp DCR module array, standard state benchmark costs, and MNRE guidelines as published in 2024.

If the announced ₹15,000 top-up at this slab is live for your application and routed through the portal, the balance at benchmark falls to ₹52,000. Treat that line as conditional, because we could not verify the top-up from an official notification.

Two cautions. The benchmark is an administrative reference, not a market price, and MNRE revises it at midterm review. Your actual quote is negotiated, so it can sit above or below ₹1,45,000, and the assistance does not move with it. State-by-state context is in our all-states subsidy overview.

Common reasons West Bengal applications stall

The scheme does not promise a zero electricity bill. MNRE (2024) frames it as an objective of helping provide free or low-cost electricity up to 300 units per month across 1 crore households, which is a programme target rather than a household entitlement. Most disappointment here traces to one of the following.

• Non-DCR modules in the bill of materials. This makes the installation ineligible outright, and it is not curable afterwards.
• Sanctioned load mismatch. Capacity above your contract demand or sanctioned load fails the procedure test, and raising the load past 5 kW moves you to net billing.
• Distribution transformer constraint. Feasibility can fail on feeder headroom regardless of your roof.
• Unregistered installer. Assistance is unavailable if the vendor is not on the National Portal, whatever the brochure claims.
• Missing fitness or inspector clearance. Synchronisation stops without the work completion report, fitness certificate, and inspector clearance or valid self certification.
• Lapsed quotation. The application is cancelled and the fee forfeited if the quotation amount and Form S2 miss the validity window.

Our rejection reasons guide works through the portal-side failures in sequence, and the net metering glossary entry defines the settlement terms.

The Bottom Line

Rules in West Bengal vary by licensee, consumer category, and sanctioned load, and they change. Nothing here is an approval or a slab amount promised to you. Build your budget on central assistance you can verify on the portal, and treat any state top-up as a bonus until your application shows it.

Inverter selection sits inside this process too. Procedure-C requires an automatic inverter with a synchronisation device, anti-islanding detection, and harmonic distortion within CEA limits, so grid-code compliance is an approval condition. Qbits is an inverter manufacturer and does not supply modules, install systems or file subsidy claims. Compare grid-tied options on the on-grid inverter page, look at the hybrid inverter range if you want battery backup, and use the service partner directory to see who supports Qbits inverters near you. Installers who want to supply them can use the partner programme.