Solar for Apartments in Delhi — RWA Plants, Group and Virtual Net Metering Explained

Solar for apartments in Delhi is possible, but it works differently from solar for an independent house. In most apartment buildings, the roof is a common area, so one resident cannot simply install panels and claim the net meter. The good news is that Delhi’s solar framework now supports housing societies, RWAs and shared models such as group and virtual net metering.

This guide explains your realistic options, what subsidy and incentives apply, what a society plant may cost, and how to get a resolution passed and the system commissioned.

Why Solar for Apartments in Delhi Is Different

Delhi has many kinds of residential buildings, and each has its own route to solar for apartments in Delhi.

• Independent houses: the owner controls the roof and can use the standard rooftop route.
• Builder floors: a very common Delhi format. Roof rights depend on your sale deed and the agreement with other floor owners.
• Group housing societies and DDA flats: the roof is a common area managed by the RWA or society.

The core problem is simple: the roof is shared, but each flat has its own electricity meter. Delhi’s group and virtual net metering rules were designed to solve this.

Four Ways to Get Solar for Apartments in Delhi

Option	Who it suits	How it works
Individual rooftop	Top-floor owner or builder floor with clear roof rights	Standard net metering on your own connection, after an NOC from other owners
RWA common-area plant	Group housing societies	A plant on the shared roof offsets lifts, pumps, lighting and EV charging
Group net metering	Societies with several blocks or meters	One plant’s generation is shared as credits across several connections
Virtual net metering / community solar	Flat owners without usable roof	Credits from a shared or off-site plant appear on your own electricity bill

Option 1: Solar for Apartments in Delhi With Clear Roof Rights

If you own the top floor and have documented roof rights, you can usually install a standard system. You will need written consent from the other owners, because the structure and wiring affect the whole building. Your system size is limited by your sanctioned load, and the rules in our guide to rooftop solar rules in Delhi NCR apply.

You can then use the residential subsidy and GBI for your own connection, with the same process as an independent house.

Option 2: Solar for Apartments in Delhi Through an RWA Plant

This is the most popular form of solar for apartments in Delhi. The society installs a plant on the common roof and uses the power for shared loads such as lifts, water pumps, corridor lights, parking lights and EV charging. The society pays much lower bills, and the savings go to the maintenance fund.

For Group Housing Societies and RWAs, support is different from the individual home scheme:

• Central assistance of ₹18,000 per kW for common facilities, capped at the lower of 500 kWp or 3kW per household.
• A Delhi government capital subsidy of ₹2,000 per kW.
• A Generation Based Incentive of ₹2 per unit for five years, for plants up to 500 kW.

Because these figures are revised from time to time, verify them on the PM Surya Ghar portal and the Delhi Solar Portal before you finalise a budget.

Option 3: Group Net Metering Explained

Group net metering lets one solar plant offset the electricity bills of several connections owned by the same entity or group. In an apartment complex, one plant on a common roof can feed credits to the society’s multiple common meters. The rules come from the Delhi Electricity Regulatory Commission (DERC) guidelines on group and virtual net metering. Check the DERC website for the latest version.

Option 4: Virtual Net Metering and Community Solar

Virtual net metering (VNM) is aimed at residents who have no usable roof. A plant is built on a shared or separate site, and the generation is credited against the electricity bills of the participants. Delhi’s solar policy supports this model and ties it to community solar. It is still developing, so ask your installer which projects are active under your DISCOM (BSES Rajdhani, BSES Yamuna or Tata Power DDL) before committing money.

What Does Solar for Apartments in Delhi Cost for a Society?

Costs depend on roof type, structure, and system size. As an indicative example, a 50kW plant for a Delhi housing society may cost roughly ₹22 lakh to ₹28 lakh. These are indicative figures and not a quotation.

• Central assistance at ₹18,000 per kW on 50kW: about ₹9 lakh.
• Delhi capital subsidy at ₹2,000 per kW: about ₹1 lakh.
• Net cost to the society: roughly ₹12 lakh to ₹18 lakh.

A 50kW plant in Delhi generates about 72,000 units a year. At ₹2 per unit, the GBI alone is about ₹1.45 lakh a year for five years. If the plant offsets common-area power at an assumed ₹8 per unit, the bill savings add up to about ₹5.8 lakh a year. A typical society payback therefore falls in the range of three to five years, depending on actual tariff and usage.

How to Get Solar for Apartments in Delhi: Steps for an RWA

1. Collect bills: gather 12 months of common-area electricity bills to understand load.
2. Pass a resolution: the RWA or managing committee approves the project in a general body meeting and records it.
3. Roof survey: an installer checks shadow-free area, structure strength and cable routes. Allow about 100 sq ft per kW.
4. Choose the model: common-area plant, group net metering, or a shared model.
5. Feasibility and approvals: apply to the DISCOM and register on the national portal. Do not order equipment first.
6. Install and inspect: work with a registered installer using ALMM-listed panels. See how net metering in Delhi inspection works.
7. Commission and claim: the DISCOM commissions the meter, then subsidy and GBI start.

Common Problems Apartment Societies Face

• No agreement on who pays and who benefits.
• Unclear roof rights or conflict with a terrace used by residents.
• Transformer already near its rooftop solar limit, which can reduce or refuse feasibility.
• Old buildings with weak slabs or crowded roofs full of water tanks and antennas.
• Missing maintenance arrangements after installation. A plant left uncleaned loses output. See our solar maintenance guide for Delhi NCR.

How to Get Residents On Board

Show the numbers in a one-page summary: current common-area bill, proposed plant size, net cost after subsidy, expected annual savings, and payback. Explain that the savings go to the maintenance fund, not to individuals. Invite residents to visit a similar society plant. A transparent process avoids most disputes.

Conclusion: Is Solar for Apartments in Delhi Worth It?

Solar for apartments in Delhi is practical when you choose the right model. Top-floor owners can use individual rooftop solar, societies can run common-area plants with subsidy and GBI, and group or virtual net metering extends the benefit to more residents. Start with your bills and roof rights, get an RWA resolution, and work with an installer experienced in societies.

Get a Free Quote from Solar Squad

Solar Squad is a Delhi-based EPC partner. We can survey your society roof, size a plant to your common-area load, and manage the subsidy and net-metering process. Contact us for a free feasibility visit.

Official Sources and Further Reading

• PM Surya Ghar Muft Bijli Yojana — national portal
• Delhi Solar Portal — state subsidy and GBI
• Delhi Electricity Regulatory Commission

FAQs

Can I install solar on my apartment roof in Delhi?

Only if you have clear roof rights and consent from other owners, such as on a top-floor builder floor. In group housing, the roof is a common area, so the RWA or society must approve the project.

What is group net metering in Delhi?

Group net metering lets one solar plant offset the bills of several electricity connections within the same group, under DERC guidelines. It suits societies with multiple meters or blocks.

What is virtual net metering?

Virtual net metering credits solar generation from a shared or off-site plant to participants’ own electricity bills. It helps residents who have no usable rooftop.

Do RWAs get a solar subsidy in Delhi?

Yes. Common facilities can receive central assistance of ₹18,000 per kW and a Delhi capital subsidy of ₹2,000 per kW, subject to caps, along with GBI of ₹2 per unit for five years. Confirm the current rules on the official portals.

How long does it take for a society to go solar?

Planning and approvals often take longer than installation. Allow a few months from resolution to commissioning, depending on DISCOM feasibility and the society’s decision-making speed.