1kW Solar System Price in India 2026: Cost Breakdown

A 1 kW rooftop solar system does not have one honest nationwide price. The best official reference is the ₹50,000 per kW benchmark in the Ministry of New and Renewable Energy’s PM Surya Ghar residential guidelines. That figure has applied to the first 2 kW since 13 February 2024.

It is a policy benchmark, not a compulsory vendor rate. The same guidelines let the consumer and registered vendor agree the system and financial terms. Your quotation therefore needs to show what its number buys.

Short version. Use ₹50,000 as the official 1 kW scheme benchmark before central assistance, not as a guaranteed market price. For an eligible 1 kWp system in a general-category state, the published CFA is ₹30,000. Compare vendors on the gross installed contract before subtracting assistance.

The five prices people call a “1 kW solar price”

Search results often mix a loose panel subtotal with a complete rooftop quotation. The table separates the five different numbers.

That first row needs care. On 26 September 2026, Waaree’s official store displayed a 550 W Mono PERC module at ₹10,299. Two modules would cost ₹20,598 for 1.10 kWp before any checkout or delivery change. The page did not establish DCR status, so this article makes no subsidy-eligibility inference from it.

On the same date, Luminous displayed its 550 W LUM 24550M BI-TS at ₹11,534 and labelled it DCR. Two modules would cost ₹23,068 for 1.10 kWp. These are named retail examples, not a claim that panels across India cost ₹20,598 to ₹23,068.

The pair totals 1.10 kWp because panels are bought as whole modules. It is not an exact 1.00 kWp system and is not used for the CFA arithmetic below.

See the broader solar panel price guide for the exact listings and per-watt arithmetic. Retail prices, stock, freight and checkout treatment can change without notice.

The official installed-system benchmark

The MNRE residential CFA guidelines publish both the benchmark cost and the assistance rate.

For general-category states, the relevant 1 kWp calculation is:

The ₹20,000 result is useful for understanding the policy. It is not a promise that your bank balance needs only ₹20,000.

Your gross contract may include a more expensive structure, long cable runs, roof-access work or fees outside the vendor’s base scope. You may also need to fund the gross amount before assistance is processed. Ask the vendor to show the payment stages rather than presenting the post-CFA number as a shop discount.

Special-category states and UTs have a different CFA schedule. State support and DISCOM charges can also vary. This article does not combine those changing local amounts into a national post-subsidy range.

What a 1 kW system actually includes

A 1 kW rooftop system is more than two panels and an inverter. Each part below has its own price line, its own warranty and its own way of being under-specified in a cheap quote.

Solar panels. At around 540 to 550 W a module, 1 kWp needs two panels, which is 1.08 to 1.10 kWp. A 335 W module would need three. The exact panel area depends on the model, so use the module datasheet for dimensions. Check the product warranty and the linear performance warranty as printed on the brand’s own page, and confirm DCR status if you plan to claim central assistance.

On-grid inverter. For a 1 kW array you need a single-phase on-grid inverter of about 1 kW rating. Ask for a single-MPPT model unless your array has two roof faces, anti-islanding protection, the exact model’s BIS registration and the grid voltage window from the datasheet. Qbits’ single-phase TLS family starts at 1.5 kW (see the Qbits section below), so check the rated output of any model proposed to you.

Balance of system. This covers DC and AC cables, MC4 connectors, a DC isolator, an AC breaker, a surge protection device and earthing. Undersized cables and weak earthing are where a cheap quote usually cuts corners, so ask for the cable cross-section and the earthing scope in writing.

Mounting structure. A flat RCC roof, a metal sheet roof and a tiled roof need different structures. The coating, thickness and wind-load design change the price.

Installation, commissioning and metering. This covers labour, testing, the net-metering application and the DISCOM’s bidirectional meter. Timelines and fees differ by DISCOM and state, so ask who is responsible for each step.

Retail listings against the ₹50,000 benchmark

A quick test shows why you must read the scope line of every quote. The table below stacks three dated retail listings, checked on 14 October 2026, against the MNRE benchmark. It is an illustration, not a vendor quote and not a market range.

The two listings alone already exceed the ₹50,000 benchmark by ₹5,797, before structure, cables, protection, labour or metering. Two things follow from that.

1. Single-unit retail prices are not what an installer pays. An EPC buys modules and inverters in volume, so its cost per item can be lower than a retail listing. The benchmark is also a scheme figure, not a price cap.
2. A 1 kW quote can legitimately sit above the benchmark. Fixed costs such as the survey, earthing, application work and the meter do not shrink with system size. If a quote is far below the benchmark, ask exactly which line was dropped. If it is far above, ask which line is carrying the difference.

The same Waaree store listed a 550 W module at ₹10,299 on 14 October 2026 (about ₹18.7 per watt, against about ₹28.1 per watt for the 540 Wp DCR listing above). That page did not state DCR status, so it must not be used in a subsidy calculation.

What must be inside an installed quote

The word “installed” is meaningless unless the quotation defines it. Ask for these lines separately:

The equipment-only subtotal ends before site labour and commissioning. The installed pre-subsidy figure is the gross contract value after all stated inclusions. The post-subsidy estimate comes last.

If a vendor starts with “after subsidy” and never reveals the gross contract, you cannot compare the quote.

What PM Surya Ghar changes at 1 kW

Under the MNRE guidelines dated 7 June 2024, standard-category CFA is ₹30,000 per kWp for the first 2 kWp. The scheme calculates capacity from the rated DC module capacity, irrespective of inverter rating.

The process also matters:

• the consumer chooses a registered vendor and agrees the system and financial terms;
• the installation must meet the scheme and local DISCOM requirements;
• the DISCOM physically inspects the installation before CFA processing; and
• assistance depends on eligibility and completed documentation.

For the application sequence, use the PM Surya Ghar guide. Before paying an advance, verify the vendor route on the current national portal and with your DISCOM.

No inverter manufacturer or installer can guarantee the government’s approval or payment outcome.

Why a 1 kW system can cost more per kW

Several project costs do not shrink in direct proportion to module capacity. A site survey, labour mobilisation, distribution board work, earthing, application handling and meter coordination still exist on a small system.

MNRE’s benchmark reflects some scale effect. It sets ₹50,000 per kW for the first 2 kW and ₹45,000 for the additional kilowatt up to 3 kW. That does not prove a market discount, but it explains why a homeowner should compare 1 kW, 2 kW and 3 kW gross quotations before choosing the lowest ticket size.

Price the 2 kW system and 3 kW system with identical brands, structure and service scope. Then compare total cost, cost per kWp and fit for your electricity use.

A generation scenario, not an output promise

Capacity should follow the site and consumption, not the subsidy slab. A transparent 1 kWp planning scenario can use:

• rated capacity: 1 kWp;
• assumed peak sun hours: 4.5 per day;
• assumed performance ratio: 0.75; and
• operating days: 365.

Those inputs are assumptions, not Qbits or installer performance claims. Shade, orientation, module temperature, soiling, downtime and local solar resource change the result. Ask every bidder to show its irradiation source and loss assumptions.

Do not convert the 1,232 kWh scenario into a savings or payback promise without your current DISCOM tariff and settlement rules. Import units avoided at your retail tariff and surplus units settled under a different rule may not have the same value.

A payback example, with the assumptions shown

Below is an illustration, not a forecast. It uses the 1,232 kWh a year scenario above and three assumed tariffs. Your DISCOM tariff and net-metering settlement rule decide the real value of each unit.

The ₹35,000 column is an illustrative figure for a gross contract of about ₹65,000 minus ₹30,000 of CFA. It is not a market price. Three things move the result:

• Self-consumption. Units used at home offset the retail tariff. Units exported may settle at a different rate under your DISCOM’s rule.
• Shade and orientation. A shaded or poorly oriented roof generates less than the scenario assumes.
• Degradation and maintenance. Output falls slowly over the years, and an inverter may need replacing within the life of the modules.

Do not read the table as a promise. Re-run it with your own tariff, your bill history and the generation figure in the vendor’s proposal.

1 kW or 2 kW: which size to quote

The benchmark and the standard CFA rate are both per kW for the first 2 kW, so the policy arithmetic for 2 kW is double the 1 kW arithmetic: ₹1,00,000 benchmark, ₹60,000 CFA and a ₹40,000 benchmark remainder. A 1 kW roof suits a small household with a low daytime load. If your bills show higher consumption, a larger system may cover more of it, and the central assistance for the third kW is smaller (₹18,000). Ask each vendor to quote 1 kW, 2 kW and 3 kW on identical equipment, then compare total cost, cost per kWp and your own consumption. See the 2 kW, 3 kW and state-wise subsidy guides.

On-grid and backup quotes are different purchases

A standard on-grid inverter stops exporting and shuts down during a grid outage. Anti-islanding protection prevents the solar system from energising a utility line while workers may be repairing it.

A backup system needs a hybrid architecture, compatible battery storage, a defined backup-load circuit and additional protection. Its price cannot be compared with an on-grid quote as if both provide the same outcome.

Qbits sells on-grid and hybrid inverters, not panels, batteries or installation. It does not publish inverter prices. If a Qbits inverter is proposed, ask for the exact model, current written warranty terms and a line-item quote. The single-phase on-grid QB 1.5 to 4.0KTLS family lists rated outputs from 1500 W upward, a 40 to 550 V MPPT range, a 20 A maximum DC input current and an IP66 enclosure on its datasheet. The PDF is on the datasheets page. Do not accept a whole-system price presented as a Qbits product price.

Compare two 1 kW quotes in this order

Use the same sequence for every vendor:

1. Confirm rated DC capacity from panel model, wattage and quantity.
2. Check whether each figure is panel-only, equipment-only or fully installed.
3. Compare the gross pre-CFA total before looking at the subsidy estimate.
4. Match the exact panel and inverter models, not just their brand names.
5. Mark every excluded charge, especially delivery, roof work, meter and DISCOM fees.
6. Confirm DCR and current scheme requirements from primary documents.
7. Ask who carries application, inspection and commissioning responsibility.
8. Treat CFA as conditional until the competent authority processes it.

This prevents a ₹20,000 panel subtotal from appearing cheaper than a ₹50,000 installed benchmark when the two numbers describe different purchases.

The decision

For planning, use ₹50,000 before CFA as the official 1 kW benchmark and ₹20,000 after standard-category CFA only as benchmark arithmetic. Neither number replaces a dated, itemised local quotation.

Compare gross scope first. Check eligibility second. Subtract assistance last.

When you are ready to review the inverter side of a homeowner quotation, use Qbits’ residential solar inverter overview. A local EPC or registered vendor must still survey the roof, specify the whole system and provide the installed price.