Solar Integration in Modern Apartments: Cost vs Benefit
More apartment buildings in India are now using solar energy to power common areas like lifts, lights, pumps, and clubhouses. In fast-developing places like Shettigere, near the Bengaluru airport, many new townships are being planned with solar-ready rooftops. Projects like Godrej MSR City are leading this shift by including solar infrastructure from the very beginning.
But is it really worth the cost? Let's break it down.
The upfront cost depends on the system size and the type of equipment used. Here's a simple guide:
| System Size | Cost Before Subsidy | Best For |
|---|---|---|
| 1 kW | ₹75,000 – ₹85,000 | Small buildings, basic lights |
| 3 kW | ₹1.9 – ₹2.1 lakh | Clubhouse or office |
| 5 kW | ₹3.1 – ₹3.6 lakh | Medium apartment societies |
| 10 kW | ₹5.3 – ₹6.0 lakh | Large societies (lifts, pumps) |
Other cost factors include:
- Panel type: Monocrystalline panels are more efficient but cost more. Polycrystalline is cheaper but less efficient.
- Inverters: Grid-tied, off-grid, or hybrid inverters have different prices.
- Mounting & wiring: Costs vary by roof type and building height.
- Labor & brand: Regional labor charges and brand warranties can affect pricing.
Optional Battery Backup:
If you want power during blackouts, solar batteries are needed. Prices range from ₹8,000 to ₹30,000 depending on size. These are optional but becoming more common.
Here's why many apartment communities are going solar:
- Lower Electricity Bills: A 5 kW system can produce about 600 units a month—saving around ₹4,000–₹4,500 in power bills.
- Faster Payback: With subsidies and savings, most systems recover their cost in 5 to 7 years.
- Adds Property Value: Homes in solar-powered societies often sell or rent faster.
- Cuts Maintenance Charges: Lower common area bills mean residents pay less every month.
- Green Impact: A 5 kW setup can cut 7 tons of carbon emissions per year.
In places like Godrej MSR City, solar-ready rooftops are built into the plan, making future solar upgrades easier and cheaper.
The Indian government is offering strong support under the PM Surya Ghar: Muft Bijli Yojana:
- Up to 2 kW: ₹30,000 per kW
- Up to 3 kW: ₹78,000 total
- Group Housing/RWAs: 20% subsidy for shared solar systems (up to 500 kW total)
Some states like Delhi also offer extra benefits:
- ₹10,000 per kW (up to ₹30,000)
- ₹3/unit reward for solar generation (for 4 years)
You can apply for all subsidies on the National Rooftop Solar Portal (pmsuryaghar.gov.in). The process has become easier and faster in 2025.
Net metering lets you send extra solar power back to the grid. This gives you credits that reduce your electricity bill.
- It uses a special meter to track power in and out.
- Most states now allow net metering for systems up to 500 kW.
- Your apartment or RWA can get paid for unused electricity.
This is like using the grid as a battery—without paying for storage.
Going solar is smart, but here are a few things to consider:
- Limited Rooftop Space: Use high-efficiency panels or explore wall/facade installation.
- RWA Agreement Needed: All residents must agree on the plan and cost sharing.
- Shading Issues: Trees or nearby buildings can block sunlight—plan layout carefully.
- Structural Check: Make sure the roof can hold the system weight.
- Initial Cost: Though costs have dropped, the starting price may still feel high for some societies.
That's why planning solar from the start, like in Godrej MSR City, makes a big difference.
- Costs are dropping every year, especially for batteries.
- New tech like bifacial and smart panels will make systems more efficient.
- Virtual net metering will let people benefit from solar even without rooftop access.
- Government support is expected to stay strong till at least 2030.
Solar isn't just for factories or big buildings anymore. In 2025, it's a smart choice for apartment owners too. The savings, the green impact, and the rising energy prices all point in one direction.
If you live in a society or are buying a new home—especially in growing hubs like Shettigere—check if the project is solar-ready, like Godrej MSR City. It could save you money, add value to your home, and reduce your carbon footprint for years to come.
