Solar for apartments and gated communities in Hyderabad: what works and how to get it approved

Hyderabad has grown upwards and inwards: apartment blocks, gated villa communities and large residential complexes now house a big share of the city. For people living in them, rooftop solar raises different questions from an independent house. Whose roof is it? Who pays? Who benefits? How do the association and the DISCOM fit in?

This guide explains how solar works in apartments and gated communities, the main models, what approvals you need, and how to take a proposal through a residents' welfare association (RWA).

Why apartments are different

In an independent house, the owner controls the roof, the electricity connection and the decision. In an apartment building:

• the roof is common property, shared by all owners;
• there are many individual electricity connections (one per flat) plus common-area connections for lifts, pumps, corridors and lighting;
• decisions usually need the association's approval;
• roof space is limited compared with the number of households.

None of this makes solar impossible. It just changes the best model.

The main models for apartment solar

Model 1: solar for common areas (most common and simplest)

A single system on the roof is connected to the common-area electricity connection: lifts, water pumps, corridor and stair lighting, gate lighting, security, clubhouse and gym.

Why it works well:

• Common-area loads run during the day, especially pumps and lighting in covered areas.
• One connection, one approval, one system, so it is simpler to manage.
• The savings reduce maintenance charges for every resident.
• Roof space is usually enough for a useful common-area system.

For most apartment complexes, this is where to start.

Model 2: individual systems for top-floor or villa owners

In gated villa communities, each villa often has its own roof and connection. Solar works almost exactly as it does for an independent house, but you may still need the community's approval for structures, aesthetics and cable routing.

In apartment buildings, a top-floor owner with exclusive roof rights (where the sale deed grants them) may be able to install a system for their own flat. This needs clear documentation and association consent.

Model 3: shared generation for multiple flats

Some buyers ask whether one rooftop system can be shared between flats, each getting credit on their own bill. This depends on whether your DISCOM and the current state regulations support arrangements such as group or virtual net metering for your building type. These rules vary and change. Check the current position with your DISCOM before planning around this model.

How much solar can an apartment roof hold?

It depends on the usable, unshaded roof area after accounting for:

• water tanks, lift machine rooms and stairwell heads;
• parapet walls and their shadows;
• access paths for maintenance and fire safety;
• areas residents use (terrace gardens, drying areas).

Raised structures can let residents keep using the terrace underneath. On flat roofs we use elevated, galvanised structures at a 10 to 15 degree tilt, rated to 150 km/h wind, which matters on tall buildings where wind is stronger. Our roof area to kW calculator gives a first estimate.

What a common-area system can save

Start with the common-area bills for 12 months: lifts, pumps, lighting, clubhouse. From Origian's installed base in the Anantapur region, each kW of solar produces about 1,550 to 1,600 units a year, or about 130 units a month on average. So:

• a 10 kW common-area system produces about 15,500 to 16,000 units a year;
• a 20 kW system about 31,000 to 32,000 units a year.

The value depends on the tariff category of the common-area connection. As a rough planning guide, our calculators use ₹8 per unit for domestic and ₹10 per unit for commercial tariffs. Ask your association's treasurer which category your common-area connection is billed under.

For costs, Origian's gross price for a 10 kW system is ₹6,10,000 to ₹6,40,000 before any subsidy. Larger systems are quoted after a site survey. See solar system prices.

Taking a proposal through the RWA

Getting association approval is often the slowest step. A clear proposal helps.

1. Gather the numbers

• 12 months of common-area electricity bills.
• The usable roof area.
• An installer's site survey, layout and quotation.

2. Show the benefit clearly

• Expected annual generation.
• Expected saving on common-area bills.
• Estimated payback period.
• The effect on monthly maintenance charges per flat.

3. Address residents' concerns early

The questions we hear most often:

• Will it damage the roof or cause leaks? Explain how the structure is anchored and sealed. We use bonding and sealant agents at every anchor point and roof penetration, and UPVC conduits over every cable run.
• Is it safe in storms and lightning? Explain the structure's wind rating and the earthing and lightning protection. See our guide to solar earthing and lightning protection.
• Can we still use the terrace? Raised structures can keep space usable.
• Who maintains it? Agree a maintenance plan up front.
• What happens if we need roof repairs later? Plan waterproofing before installation.

4. Agree the funding

Common options:

• funding from the association's corpus or sinking fund;
• a one-time contribution from owners;
• financing, with repayments from the savings. See our guide to solar loans in India.

5. Pass a resolution

Record the decision formally in a general body meeting, according to your association's bye-laws.

Approvals with the DISCOM

A grid-connected common-area system needs DISCOM approval like any other: a feasibility application, an inspection and net metering. In Hyderabad, this is usually TGSPDCL. The application is made for the connection the system will serve. At Origian, we handle the net metering application and DISCOM coordination as part of the installation.

A note on the PM Surya Ghar subsidy

PM Surya Ghar supports residential rooftop solar. Whether, and how, it applies to a residents' association or a common-area connection is set by the scheme's current rules and your DISCOM, so check the official portal before planning around it.

There is also an essential condition: the subsidy is paid only when a vendor registered with your DISCOM installs the system. Origian Power is not a registered PM Surya Ghar vendor, so a system we install does not qualify for the subsidy. If the subsidy is central to your association's decision, ask any installer whether they are registered with your DISCOM, and check the official portal. See our subsidy guide.

Practical design points for apartments

• Wind: taller buildings face stronger wind. Use structures rated for it and secure anchoring.
• Cable routing: long runs from roof to the meter room need correctly sized cable in protective conduit.
• Shading: lift machine rooms, water tanks and neighbouring towers cast long shadows. Design around them.
• Fire access: leave access paths clear.
• Monitoring: give the association's facilities manager access to the inverter app.
• Maintenance access: plan safe access for cleaning and inspections.

Maintenance for apartment systems

Shared systems need a clear owner. Agree:

• who receives alerts from the monitoring app;
• how often panels are cleaned (dust from nearby construction is common in growing areas of Hyderabad);
• who to call for faults.

Our maintenance visits are scheduled every three months, with a 48-hour response commitment for reported issues. See solar maintenance and AMC and our solar panel cleaning guide.

Villas in gated communities

If you own a villa in a gated community:

• you can usually install a system on your own roof for your own connection, like an independent house;
• check the community's rules on structures, height, appearance and contractors working on site;
• inform the association and the facilities team before work begins.

The rest of the process is the same as any home: site visit, design, quotation, DISCOM approval, installation and net metering. See our home solar cost guide.

How Origian works with apartments and communities

We have two offices in Hyderabad, at Hitech City and Nizampet, and we work with associations as well as individual owners. We can:

• survey the roof and review your common-area bills;
• prepare a layout, generation estimate and quotation;
• attend an association meeting to answer residents' questions;
• handle the DISCOM application and net metering;
• install with our standard build specification and maintain the system afterwards.

To start, book a free site survey, or see solar panel installation in Hyderabad.

A worked example: a 40-flat apartment block

Here is how a typical association might evaluate a common-area system. (The figures illustrate the method; your building's numbers will differ.)

The building

• 40 flats across 5 floors.
• Common-area loads: two lifts, water pumps, corridor and stair lighting, gate and boundary lighting, a small gym.
• Usable roof area after tanks and the lift room: enough for roughly 15 kW.

The numbers

• 15 kW produces about 23,000 to 24,000 units a year in our region.
• If most of that offsets common-area consumption, the association's electricity bill falls substantially.
• Spread across 40 flats, the saving reduces each flat's maintenance share every month.

The decision

• The association compares the full system cost (quoted after a site survey) with the annual saving to estimate payback.
• It chooses between funding from the corpus and a one-time contribution.
• It passes a resolution and appoints one committee member as the solar point of contact.

Roof waterproofing first

Many apartment roofs need waterproofing every several years. Installing solar on a roof that is due for waterproofing creates a problem: panels and structures must be removed and reinstalled later. Before installing:

• inspect the roof's condition;
• do any waterproofing that is due;
• plan the structure layout so future maintenance is possible.

Our anchoring uses bonding and sealant agents at every anchor point and roof penetration, so the structure itself does not create leak paths.

Common objections at RWA meetings, and honest answers

"It's too expensive." Show the annual saving and payback, and the long system life. Panels carry a 25-year performance warranty.

"Not everyone benefits equally." A common-area system benefits everyone through lower maintenance charges. Individual flat systems benefit only their owners, which is why common-area systems are easier to agree.

"What if the installer disappears?" Choose an established installer with a local office, written warranties and a maintenance commitment. Ask to see similar installations.

"Will it make the building hotter or look ugly?" Panels actually shade part of the roof. Layout and structure height can be designed to be neat and unobtrusive.

"We will need the roof for events." Raised structures and planned layouts can leave usable space.

Monitoring a shared system

When a system belongs to everyone, it can easily become no one's responsibility. Good practice for associations:

• give the facilities manager and one committee member access to the inverter monitoring app;
• review monthly generation at committee meetings, alongside the common-area bill;
• set a simple threshold: if generation drops noticeably on clear days, call the installer;
• keep a file with the warranty documents, the single-line diagram and the maintenance records.

A short monthly report helps residents see what the system is saving, which keeps support for it strong.

Safety rules for a shared terrace

Residents, children and staff use apartment terraces. The solar system should be designed and managed with that in mind:

• cable runs should be in conduit and routed to avoid trip hazards;
• distribution boxes should be closed and, where possible, locked;
• earthing and lightning protection should be complete, as described in our guide to solar earthing and lightning protection;
• residents should be told not to climb on structures or touch panels and connectors;
• cleaning staff should be trained in safe cleaning methods.

Timeline for an apartment project

Apartment projects take longer than independent homes, mostly because of decision-making rather than installation. A realistic sequence:

1. Committee discussion and site survey: gather bills, survey the roof, get a layout and quotation.
2. Residents' meeting: present the proposal, answer questions, agree the funding.
3. Resolution: formal approval under the bye-laws.
4. Waterproofing, if due.
5. DISCOM application, installation and net metering. For Origian, the installation process itself typically takes 10 to 15 days from document collection to switch-on.

Planning the association steps early avoids the most common delays.

When the builder still controls the building

In newer complexes, the builder may not yet have handed over to the association. Solar can still be planned, but the approval, the electricity connection and responsibility for the roof need to be clear first. If the building is still under construction, it can be easier to plan solar into the design, with cable routes and structure points ready, than to retrofit it later.

Electric vehicle charging and common areas

Many communities are adding EV charging points in parking areas. These add to common-area consumption, often in the evening and at night. A common-area solar system will not charge cars directly at night, but under net metering its daytime surplus credit offsets part of that consumption. If EV charging is planned, include it when sizing the system.

Questions residents should ask the installer

Before the association decides, residents can ask the shortlisted installers:

1. How many kW can our roof hold, and what does the layout look like?
2. How many units will it produce a year, and what will it save on our common-area bill?
3. How will the structure be anchored and sealed against leaks?
4. What is the structure's wind rating for a building of our height?
5. How is the system earthed, and does the lightning arrestor have its own earth pit?
6. Who handles the DISCOM application and net metering?
7. What warranties apply to the panels, inverter and workmanship?
8. What does maintenance include, how often, and how quickly do you respond?
9. Are you a registered PM Surya Ghar vendor with our DISCOM, and does the scheme apply to our connection at all?
10. Can you show us similar installations you have completed?

Asking every installer the same questions makes the quotes easier to compare.

Sizing from the common-area bill

Start from 12 months of common-area bills, not from the size of the roof. A system much larger than the common-area consumption may create a surplus that net metering rules do not fully reward. A system much smaller leaves savings on the table. Our article on how many units a solar system generates shows how to work out the size from your bills.

Frequently asked questions

Can apartments install rooftop solar in Hyderabad? Yes. The simplest model for an apartment in Hyderabad is a rooftop solar system on the common roof that powers common-area loads such as lifts, pumps and lighting, approved by the residents' association and connected through TGSPDCL net metering. The savings reduce maintenance charges for every flat.

Who approves rooftop solar in an apartment or gated community? For rooftop solar in an apartment, the residents' welfare association usually approves it through a resolution under its bye-laws, since the roof is common property. The DISCOM approves the grid connection and net metering. In gated villa communities, check the community's rules on structures and contractors as well.

How much does rooftop solar cost for an apartment building? Apartment rooftop solar cost depends on the usable roof area and common-area consumption. As a reference, Origian's gross price for a 10 kW system is ₹6,10,000 to ₹6,40,000; larger systems are quoted after a site survey. A 10 kW system produces about 15,500 to 16,000 units a year in our region.

Can flats in an apartment share one rooftop solar system? Only where your DISCOM and current state regulations support arrangements such as group or virtual net metering for your building type. These rules vary and change, so check with the DISCOM first. A common-area rooftop solar system is the simpler, widely used alternative that benefits every flat equally.

Will rooftop solar panels cause leaks on an apartment roof? Not if installed properly. Anchor points and roof penetrations should be sealed, cables run in conduit, and any waterproofing that is due done before installation. Origian uses bonding and sealant agents at every anchor point and roof penetration, so the solar structure does not create leak paths.

Can residents still use the terrace after installing solar panels? Often, yes. Raised solar structures can leave usable terrace space underneath, and a planned layout keeps access paths, drying areas or event space clear. Origian uses elevated galvanised structures on flat roofs, rated to 150 km/h wind, which also let air flow under the panels and keep them cooler.

Who maintains a rooftop solar system in an apartment? The residents' association does, through a maintenance agreement with the installer. Agree in writing on visit frequency, cleaning, who receives monitoring alerts and the response time. Origian's maintenance visits for rooftop solar systems are scheduled every three months, with a 48-hour response commitment for reported issues.