When Amit, a homeowner in DLF Phase 4, Gurgaon, received his June electricity bill, it crossed ₹7,000 yet again.With three air conditioners running through the summer, work-from-home equipment, and daily household usage, electricity costs had become one of the biggest recurring expenses for his family. Like many homeowners across Gurgaon, he had already decided to install rooftop solar.
The only question was: Should he choose a 3kW solar system or a 5kW solar system?
If you're exploring solar for your home in Gurgaon, chances are you're facing the same confusion.The good news is that the answer is usually simpler than most people think.
Why Gurgaon Homeowners Are Going Solar Faster
Electricity consumption in Gurgaon is different from many other cities.Long summers, heavy AC usage, rising electricity tariffs, and larger homes mean that monthly bills can quickly climb above ₹5,000–₹8,000.
Whether you live in New Gurgaon, a builder floor in Sector 56, or a villa in DLF, your electricity usage is likely much higher during peak summer months.This is exactly why rooftop solar adoption has increased significantly across the city.But before installing solar, it's important to understand which system size matches your consumption.
3kW vs 5kW Solar System: Quick Comparison
Feature 3kW Solar System 5kW Solar System Daily Generation 12–15 Units 20–25 Units Monthly Generation 360–450 Units 600–750 Units Roof Space Required 250–300 sq. ft. 400–500 sq. ft. Suitable For 2–3 BHK Homes Large 3–4 BHK Homes AC Usage 1–2 ACs 2–4 ACs
The better question, however, is not how much electricity the system produces.It's how much electricity your home consumes.
Which System Matches Your Electricity Bill?
For most Gurgaon households, monthly electricity bills provide the clearest indication of the right system size.
A 3kW Solar System May Be Right If:
Your electricity bill is between ₹3,000–₹5,000 per month
You live in a 2–3 BHK apartment or builder floor
Your home typically uses one or two ACs
You have limited rooftop space
A properly designed 3kW system can offset a significant portion of household electricity consumption while requiring a lower upfront investment.
A 5kW Solar System May Be Better If:
Your monthly bill regularly exceeds ₹6,000
You use multiple air conditioners
You live in an independent house or villa
You are planning to buy an electric vehicle in the future
Many homeowners choose a 5kW system because it allows them to accommodate future energy requirements without upgrading later.
What Subsidy Is Available in Gurgaon?
Amit was relieved to learn that both 3kW and 5kW systems qualify for the same subsidy cap. One of the biggest reasons rooftop solar has become more affordable is the PM Surya Ghar Muft Bijli Yojana .Under the current subsidy structure, eligible residential consumers can receive:
This means both 3kW and 5kW systems can benefit from the same maximum subsidy amount, subject to applicable government guidelines.For many homeowners, this significantly reduces the effective project cost and improves overall savings.
Understanding Net Metering in Gurgaon
Amit’s installer explained DHBVN’s net metering in simple terms: the extra units his panels produced in the afternoon would be credited against his night‑time usage. Under DHBVN’s policy, a bidirectional meter records both imported and exported electricity. This means if Amit’s system exports 15 units during the day and he consumes 15 units at night, those units are balanced on his bill. DHBVN allows homeowners to carry forward surplus credits month to month, ensuring that excess summer generation can offset higher winter consumption. Importantly, the utility issues a “solar adjustment” line item on the bill, so families can clearly see how much of their grid usage was offset by solar.
This transparent mechanism is one of the reasons rooftop solar adoption has accelerated in Gurgaon—even when you’re not home during the day, your system continues generating value and reducing your DHBVN bill. Learn more about DHBVN net metering process here.
How Much Roof Space Do You Need?
A 3kW needs ~250–300 sq. ft., while a 5kW needs ~400–500 sq. ft. A site survey ensures your rooftop can accommodate the system despite tanks or shading .However, factors such as water tanks, staircases, shading from nearby buildings, and rooftop design can affect the final layout.A professional site survey helps determine how much usable space is actually available.Here are 7 things to consider before installing a rooftop solar system .
How Much Can You Save Every Year?
While actual savings depend on electricity tariffs and usage patterns, most homeowners are surprised by how much solar can offset annually.
System Size Estimated Annual Generation Potential Annual Savings* 3kW 4,500–5,400 Units ₹30,000–₹45,000 5kW 7,200–9,000 Units ₹50,000–₹75,000
*Savings vary based on consumption, tariff slab, and net metering benefits.Over the lifespan of the system, these savings can add up significantly. Find out how much money rooftop solar can save you .
How Long Does Installation Take?
Many homeowners assume solar installation is a lengthy process.In reality, the physical installation is usually completed within a few days.
The typical process includes:
Site Survey
System Design
Material Delivery
Installation
Testing & Commissioning
Net Metering Approval
The overall timeline depends on approvals and documentation, but the rooftop installation itself is generally quick and hassle-free. Explore our complete rooftop solar installation guide .
How MYSUN Helps Gurgaon Homeowners
At MYSUN, every solar recommendation begins with understanding your electricity bills, rooftop space, and future requirements.Our team helps homeowners with system sizing, subsidy guidance, DHBVN net metering support, installation, and after-sales service.Whether a 3kW or 5kW solar system is right for you depends on your home—not a standard package.A professional assessment can help ensure that your rooftop solar system delivers the maximum savings possible for years to come.
Book your Solar System for just 6,999 and build your personalized payment plan with Flexi-payTM. 
Comments