Archive for year: 2026

Are you looking for a way to reduce your monthly EB bill and switch to clean energy? A 5 kW solar system can be an excellent option for many medium to large homes in Chennai. With abundant sunlight throughout the year, rooftop solar can help homeowners generate their own electricity and reduce their dependence on grid power.

In this guide, we explain how a 5 kW solar system works, its benefits, estimated electricity generation, installation requirements and available government subsidies.

What Is a 5 kW Solar System?

A 5 kW solar system is a rooftop solar installation with a total rated capacity of 5 kilowatts. It converts sunlight into electricity using photovoltaic solar panels.

For example, it may be suitable for homes with higher electricity consumption. These households may regularly use air conditioners, refrigerators, washing machines, water pumps and other electrical appliances.

The actual system configuration depends on your electricity consumption, available rooftop space, roof conditions and the type of solar system selected.

How Much Electricity Does a 5 kW Solar System Generate?

A properly installed 5 kW solar system in Chennai may generate approximately 18–25 units of electricity per day under favourable conditions.

Estimated generation:

• Daily generation: 18–25 units
• Monthly generation: 540–750 units
• Annual generation: 6,570–9,125 units

These figures are estimates, not guaranteed output. Actual generation depends on sunlight, shading, panel orientation, weather, equipment efficiency and system maintenance.

What Is the Cost of a 5 kW Solar System in Chennai?

The price of a 5 kW solar system depends on the equipment, installation requirements and system configuration.

Factors affecting the cost include:

• Solar panel brand and efficiency
• On-grid, off-grid or hybrid configuration
• Inverter type and capacity
• Mounting structure and rooftop conditions
• Wiring, earthing and safety equipment
• Battery storage, if required
• Installation and applicable approvals

For an accurate quotation, homeowners should request a site assessment and a detailed proposal covering equipment specifications, installation costs, warranties and expected generation.

Is a Government Subsidy Available for a 5 kW Solar System?

Eligible residential consumers may be able to receive financial assistance under the PM Surya Ghar: Muft Bijli Yojana, subject to the current scheme guidelines and eligibility requirements.

Under the central subsidy structure, eligible residential rooftop solar installations can receive up to ₹78,000 in central financial assistance for systems of 3 kW or above. A 5 kW installation does not automatically receive a higher central subsidy than the applicable cap.

Applicants should verify current eligibility, approved vendors, installation requirements and application procedures through the official portal:

https://pmsuryaghar.gov.in

Commercial and industrial consumers should check the applicable rules for their consumer category before assuming residential subsidy benefits apply.

Which Type of 5 kW Solar System Should You Choose?

1. On-Grid Solar System

An on-grid system connects to the electricity grid. It is often suitable for homes that want to reduce electricity purchases using solar generation. Grid-connected systems generally shut down during a power outage unless specifically designed with suitable backup equipment.

2. Off-Grid Solar System

An off-grid system operates independently of the electricity grid and typically uses batteries to store energy. It may suit locations with limited or unreliable grid access, but battery capacity and system sizing are important.

3. Hybrid Solar System

A hybrid system combines grid connectivity with battery storage. It can provide backup power for selected loads, depending on the system design and battery capacity.

How Much Rooftop Space Is Required for a 5 kW Solar System?

A 5 kW rooftop solar system may require approximately 250–350 square feet of usable space, depending on panel wattage, layout, mounting design and the need for maintenance access.

Before installation, the rooftop should be checked for shading, structural suitability, waterproofing concerns and safe access.

Benefits of Installing a 5 kW Solar System

Lower Electricity Bills

Solar generation can reduce the amount of electricity purchased from the grid. Your actual savings depend on your consumption pattern, tariff, self-consumption and applicable export or net-metering arrangements.

Clean and Renewable Energy

Solar power helps reduce reliance on conventional grid electricity and supports a cleaner energy future.

Long-Term Energy Planning

A solar installation can help households manage a portion of their electricity expenses over the long term. Compare the initial investment, expected generation, maintenance and equipment warranties before deciding.

Suitable for Many Modern Homes

A 5 kW system can be considered by households with substantial daytime electricity consumption, particularly when rooftop space and site conditions are suitable.

What Is the Installation Process?

A professional rooftop solar installation generally involves these steps:

1. Electricity consumption assessment: Review electricity bills to understand household energy needs.
2. Rooftop inspection: Evaluate available space, shading and structural suitability.
3. System design: Select the appropriate capacity, panels, inverter and configuration.
4. Quotation and documentation: Review costs, specifications and required approvals.
5. Installation: Install the mounting structure, panels, inverter, wiring and safety equipment.
6. Inspection and commissioning: Complete the applicable utility procedures and system testing.
7. Monitoring and maintenance: Check system performance and keep panels clean according to site conditions and manufacturer recommendations.

Why Choose Kandhan Solar?

Kandhan Solar helps customers explore rooftop solar solutions based on their electricity requirements and site conditions. A proper assessment can help determine whether a 5 kW system is suitable for your home and which configuration best fits your needs.

Whether you want to reduce electricity expenses or move towards renewable energy, selecting the right system begins with a clear understanding of your power consumption and installation requirements.

Frequently Asked Questions

Is a 5 kW solar system sufficient for a house?

Therefore, solar power may be suitable for many households. However, the right system capacity depends on monthly electricity consumption, daytime usage, available roof space, and backup requirements.

How many units can a 5 kW solar system produce per month?

It may generate approximately 540–750 units per month under favourable conditions. Actual output varies with weather, shading and equipment performance.

Can a 5 kW solar system run air conditioners?

It can contribute to powering air conditioners and other household appliances when sufficient solar electricity is available. The result depends on appliance loads, simultaneous usage, sunlight and the system configuration.

Does a 5 kW solar system work at night?

Solar panels do not generate electricity at night. Power must come from the grid or a suitably sized battery system.

Is a battery compulsory for a 5 kW rooftop solar system?

No. Batteries are generally not required for a standard on-grid system. They may be needed when backup power or off-grid operation is required.

Get Started with Rooftop Solar in Chennai

Thinking about installing a 5 kW solar system for your home? Start by assessing your electricity consumption, rooftop space and eligibility for applicable government benefits.

Contact Kandhan Solar to discuss your rooftop solar requirements and request an installation assessment.

Contact Kandhan Solar to discuss your rooftop solar requirements and request an installation assessment.

Kandhan Solar India Private Limited
Phone: 9840136668
Address: Door No. 4/20, Plot No. 274, 5th Street, Sunaresan Nagar, Karambakkam, Samayapuram Nagar, Porur, Chennai – 600 116.

Website: https://kandhansolar.com/

Switch to solar energy and take a step towards a more energy-efficient home.

If you’ve been putting off going solar because you’re not sure what subsidies you actually qualify for, now is a good time to look again. Between the central government’s PM Surya Ghar scheme and Tamil Nadu’s own new state-level top-up, the combined support available to a typical household has never been higher— and TANGEDCO has streamlined much of the paperwork that used to make the process feel intimidating. Here’s a clear, no-jargon breakdown of what’s on offer, who qualifies, and how the application actually works.

The Two Layers of Subsidy

1. The Central Scheme — PM Surya Ghar Muft Bijli Yojana

This is the national rooftop solar program, and it provides the foundation for applications in Tamil Nadu. It offers:

• ₹30,000 per kW for the first 2 kW of system capacity
• ₹18,000 for the 3rd kW
• A cap of roughly ₹78,000 for systems of 3 kW and above

The program has no income ceiling. Your income does not affect eligibility. You must own a residential property with an active TANGEDCO connection. An MNRE-empanelled vendor must carry out the installation. Furthermore, the property must not have previously received a central subsidy for rooftop solar. As a result, previous beneficiaries may not be eligible to apply again.

2. The New State Top-Up (Tamil Nadu Budget 2026–27)

In its 2026–27 budget, the Tamil Nadu government announced a new Rooftop Solar Subsidy Scheme designed to work alongside the central program rather thanreplace it. Combined, the two schemes can now bring total support up to about ₹1 lakh per home — a significant jump from what was available even a year ago, and a strong signal that the state wants to accelerate rooftop adoption well beyond the roughly one lakh households currently covered.

Who’s Eligible

The schemes aren’t limited to single-family homes. Coverage generally extends to:
1.Residential consumers (including apartments and group housing)
2.Commercial establishments — shops, offices, small hospitals
3.Educational institutions
4.Agricultural consumers, including pump-set connections
5.Industrial units under the LT (low-tension) category
Systems above 10 kW go through an additional feasibility study and a transformer capacity check before approval, which is standard practice to make sure the local grid infrastructure can handle the added capacity.

How the Application Process Works

TANGEDCO acts as the nodal agency for the whole process in Tamil Nadu, and almost everything now runs through its Unified Solar Rooftop Portal. In broad
strokes:

1. Apply online through the portal with your consumer details and proposed system capacity.
2. Feasibility check — TANGEDCO assesses technical suitability, which typically takes 7–15 working days in urban areas.
3. Installation by your chosen registered vendor, usually completed within 1–2 days for a standard 3 kW residential system.
4. Net meter and generation meter installation — You can apply for both through TANGEDCO after installation. Your installer should coordinate the process for you.
5. Commissioning certificate — Your installer uploads the certificate to the portal along with your bank details.
6. Subsidy disbursement via Direct Benefit Transfer, generally within 30–60 days of commissioning.
   A practical tip: don’t commission the system before TANGEDCO’s feasibility approval comes through — jumping ahead can complicate the subsidy claim later.

Net Metering: Where the Real Long-Term Savings Come From

Beyond the upfront subsidy, net metering is what makes solar genuinely pay for itself over time. Under the TNERC (Tamil Nadu Electricity RegulatoryCommission) framework that TANGEDCO implements, any solar power you generate but don’t use is exported to the grid, and you’re billed only for your net consumption — what you draw from the grid minus what you send back. For most households, this is what pushes electricity bill reductions into the 40–90% range
depending on system size and usage patterns.

One thing worth checking, especially if you’re on subsidised or free electricity units, is how net metering interacts with your existing consumption-based subsidies. For example, the rules may differ from those that apply to a standard metered household, and therefore it’s important to confirm the details with TANGEDCO or your installer before applying.Therefore, before applying, it’s worth confirming the details with TANGEDCO or your installer. This way, you can understand how the subsidy and net-metering arrangements will work together and avoid any unexpected changes to your electricity bill.

Why the Timing Matters

The central scheme operates on a fixed national budget, and it’s designed to run only until either the funding is exhausted or the installation target is reached —whichever comes first. It isn’t an open-ended entitlement. With the new state top-up now stacking on top of it, Tamil Nadu households currently have access to more combined support than at almost any point since these programs launched, but that window is tied to budget availability rather than a fixed end date.

How Kandhan Solar Can Help

Navigating feasibility approvals, vendor registration, and meter paperwork can be time-consuming. Kandhan Solar can handle the full process for you.

We manage each step from the initial site assessment to system design. We also coordinate CEIG, NCES, and TANGEDCO approvals. Our support continues through generation meter compliance and performance monitoring.

Are you a homeowner looking to reduce your electricity bill? We can help you understand the available subsidy options.

Are you a business considering a CAPEX or OPEX solar project? We can guide you through the process and manage the required paperwork.

Are you a farmer considering a pump-set connection? Our team can explain the applicable subsidy and help with the documentation.

Ready to see what you could save? Get in touch with our team for a free site assessment.

We will provide a personalised quote based on your roof area and energy consumption.

This article reflects publicly available subsidy information from the Tamil Nadu 2026–27 budget announcement.

MNRE and the Tamil Nadu government set the subsidy amounts, eligibility criteria, and disbursement timelines. These details may change over time.

Always confirm the latest figures with TANGEDCO or your solar installer before applying.