Solar on builder floors and shared roofs
A builder floor or a shared roof can carry rooftop solar in Delhi and Noida, and the subsidy applies to it. What decides the route is who holds the right to the terrace and whose electricity connection the panels feed: your own connection, the society's common-area connection, or, in Delhi since 20 January 2026, one plant on a common roof credited to several connections under virtual net metering. The central subsidy covers systems on a roof, terrace, balcony or elevated structure, and BSES Rajdhani's FAQ says installations under group and virtual net metering are eligible too.
Who has the roof right, and who signs
On a builder floor the terrace belongs to one floor or is shared by all of them, and the sale deed says which. If the terrace is yours alone, you sign everything. If it is common, every co-owner's written consent comes first: the structure stands on their share and the cable runs through the common stairwell.
Net metering is applied for against an existing electricity connection only, so the applicant is the consumer named on the bill of the floor the panels feed. A tenant may apply subject to a no-objection certificate (NOC) from the owner, and a co-owner using a common terrace is in the same position: the board expects to see the owner's consent. Where neighbours cannot agree who gets the terrace, the FAQ offers a route rather than a refusal: both may jointly apply under virtual net metering, with a common roof and the credit shared in the proportion they decide.
Sanctioned load on one floor
Each floor has its own meter and its own sanctioned load, and the first fear is that a small load caps the solar size. In Delhi it does not. A consumer can install a solar system up to or beyond the sanctioned load; where the plant is larger, service line cum development charges under the DERC Supply Code apply. For small systems the 2024 amendment goes further: no feasibility study is needed up to 10 kW on the same supply type, and the DISCOM handles any load increase or transformer upgrade. Size the system to your floor's consumption, not the building's; the system size calculator works from your own bill.
Structure height and access
A builder floor's terrace is a working space: water tanks, a staircase head, clotheslines. The FAQ answers the height question directly: the plant's height can be adjusted to the terrace height, and it can be raised above the water tank. A raised steel structure keeps the terrace usable underneath and lifts the panels clear of the tank's shadow. The space rule is 7 to 8 square metres, or 70 to 80 square feet, of shadow-free area per kWp, so about 240 to 300 square feet for 3 kWp. On a shared terrace that area has to be yours to use for the life of the system, and the cable route down to your floor needs the same consent as the roof. Assessing the roof structure for feasibility is the installer's job under the scheme, and Verde Solaire offers a free site evaluation and no-obligation proposal.
Route 1: your own connection on your floor
This is the standard PM Surya Ghar: Muft Bijli Yojana route. The system is wired to your meter, a net meter is installed, and the central subsidy is paid to your bank account: up to ₹78,000 for 3 kW or more, with Delhi's own subsidy and per-unit incentive on top, set out on the Delhi subsidy page. No feasibility study is needed up to 10 kW on the same supply type.
The price is the same as on an independent house: a 3 kW system was published at ₹1,99,000 to ₹2,10,000 in July 2025, which in Delhi nets to ₹43,000 to ₹54,000 after both subsidies. The 3 kW Delhi page has the working and the how to apply guide the nine portal steps. On a builder floor the only extra paperwork is the co-owners' consent for the terrace and, if you rent, the owner's NOC.
Route 2: the society's common-area connection
In a group housing society, or a building run by a residents' welfare association (RWA), the roof is common property and the association is the consumer. The plant feeds the common-area connection, so it is the lift, pump and lighting bill that falls, not your flat's.
The subsidy is separate from the household one: ₹18,000 per kW from the centre for common facilities, up to 500 kW (3 kW per house), EV charging included. Delhi adds ₹2,000 per kW, up to 500 kW and a generation-based incentive (GBI) of ₹2 per unit (up to 500 kW, 10 kW per house). The 500 kW ceiling includes the individual rooftop plants residents have already installed in the same society. The document this route turns on is the society's resolution authorising the plant, the vendor and the signatory. The housing societies page has more.
Route 3: Delhi virtual net metering, since 20 January 2026
Virtual net metering is the route for a shared roof where the flats want the benefit on their own bills. One plant is built on the common roof and its generation is credited to two or more connections in a proportion the participants agree, under an agreement or memorandum of understanding between them. Delhi has had guidelines for group and virtual net metering since 2019; the Seventh Amendment widened who may use them: the Seventh Amendment of 20 January 2026 opens virtual net metering to all Delhi consumers, with DISCOMs bearing line and network costs up to set caps.
Its wording matters for a building of flats. The framework is now "applicable for all consumers of NCT of Delhi including consumers of single point of supply". Participants may change their share of the credit, or add new connections, twice in a financial year with two months' notice. The DISCOMs bear the capital cost of the service line and network augmentation on the 11 kV network and below until the cumulative capacity under virtual and group net metering reaches 110 MW for BSES Rajdhani, 100 MW for Tata Power-DDL, 30 MW for BSES Yamuna and 10 MW for NDMC. Subsidy under this route is confirmed by the BSES Rajdhani FAQ, and the GBI is paid by ownership share, provided the consumer has ownership rights in the plant.
The waiver ends when each board's cap is reached, and the application form is each board's to publish; the Delhi net-metering guide will carry it.
What the electricity board asks for on a shared roof
BSES Rajdhani's list has no separate shared-roof document. At application: an online application on rts.bsesdelhi.com (helpline 19123, extension 3), the applicant's signature ID proof and scanned signatures. After installation: a single line diagram, the inverter's IEC certificates and data sheet, the net-metering connection agreement, a photograph of the earth leakage circuit breaker and geotagged photographs of the plant. At inspection: the inspection form and the serial numbers of the inverter and modules. The subsidy claim documents are on the how to apply guide.
The shared-roof paperwork sits around that list: the owner's NOC where the applicant is a tenant, the participants' agreement or MoU under virtual net metering, and, for a society plant, the resolution naming the signatory. Keep the consent on file for as long as the plant stands.
Noida, Greater Noida and Ghaziabad
The three routes exist in Uttar Pradesh in the same shape, but the rules come from the state regulator rather than DERC: under the UPERC rooftop solar regulations of 2019, residential users may choose net or gross metering, and the DISCOM allows capacity within transformer limits. The household state subsidy sits on top of the central one, on the Uttar Pradesh subsidy page. If your society wants one plant credited to several flats in Noida, ask your electricity board in writing before committing. The Noida net-metering guide names the board and its process. Verde Solaire is a registered PM Surya Ghar vendor in both Delhi and Uttar Pradesh, and files the application with you in either state.
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