India’s rooftop solar adoption is accelerating rapidly, with the Ministry of New and Renewable Energy reporting over 25 GW of installed rooftop solar capacity in the country. Against this backdrop, the CAPEX solar model is emerging as one of the most preferred financing approaches for businesses and homeowners looking for long-term electricity savings and ownership benefits.
In this model, consumers invest upfront in a rooftop solar system and gain full ownership of the asset, along with the long-term financial value it generates. From lower electricity costs and net metering benefits to financing support and tax incentives, understanding how the CAPEX model works is becoming increasingly important for anyone planning a long-term transition to rooftop solar in India.
The CAPEX solar model is a financing approach where the customer or the business pays the upfront cost of installing a rooftop solar system and becomes the owner of the setup. The investment typically covers solar panels, inverters, mounting structures, installation, and maintenance. Since the customer owns the system, they receive all the long-term savings and benefits generated by the solar system.
In practice, this means -
The CAPEX model works best when a business is looking to maximize long-term returns, support clean energy goals, and turn solar energy into a long-term asset that delivers sustained financial value.
CAPEX solar model gives ownership after upfront investment
In a typical solar CAPEX model, the customer either self-funds the installation or opts for financing through loans or EMI-based repayment plans.
Here’s how the process usually works -
1. Rooftop assessment and system design
2. Cost estimation and financing selection
3. Solar panel installation and grid connection
4. Net metering approval from the DISCOM
5. Electricity generation and bill savings
Since the customer owns the system from day one, all electricity generated directly contributes to reducing monthly power bills. Any excess electricity generated can also be exported to the grid under net metering policies available in many Indian states.
For Indian businesses, the model should also be assessed through a few key financial indicators:
Understanding what the CAPEX model is important, but choosing the right financing partner matters just as much. Tata Power offers multiple financing solutions that make rooftop solar adoption more practical for businesses and homeowners.
Here’s how Tata Power supports businesses with CAPEX solar model financing -
Round and round it goes, where it stops; a solar fact glows
The CAPEX solar model changes the role of solar from being just an energy solution to becoming a long-term financial asset. Instead of simply reducing electricity bills, it gives consumers ownership over how energy is generated, financed, and consumed over the next two decades. As rooftop solar adoption continues to grow across India, the conversation is no longer only about installing panels. It is about choosing a model that aligns energy savings, financing flexibility, and long-term value into one decision
The frequently asked questions section is a reliable source for unlocking answers to some of the most crucial inquiries. Please refer to this section for any queries you may have.
Yes. The solar CAPEX model can work very well for small businesses with regular daytime electricity consumption. Since the business owns the system, long-term electricity savings are usually much higher compared to traditional power costs. Financing options and EMI-based repayment structures have also made rooftop solar more accessible for MSMEs and growing businesses in India.
Residential users now prefer the CAPEX model in solar because it allows them to own the rooftop solar system completely while benefiting from government subsidies and lower monthly electricity bills. Residential users can also access solar loans, EMI schemes, and financing partnerships offered by companies like Tata Power and leading banks
The payback period for a capex solar model usually depends on electricity usage, system size, location, and local power tariffs. In many commercial and industrial setups, the investment can generally be recovered within 4–6 years through electricity savings, while the system itself may continue generating power for over 25 years.
The CAPEX solar model works best for Indian industries with high daytime electricity consumption, long-term roof availability, and the ability to invest upfront. Manufacturing units, textile mills, cold storage facilities, warehouses, hospitals, educational institutions, commercial complexes, MSMEs, and large factories benefit the most because they can reduce grid dependence and capture long-term savings. Since MNRE promotes grid-connected rooftop solar, businesses with stable operations and predictable power demand are better placed to maximize returns.
The CAPEX solar model works best for Indian industries with high daytime electricity consumption, long-term roof availability, and the ability to invest upfront. Manufacturing units, textile mills, cold storage facilities, warehouses, hospitals, educational institutions, commercial complexes, MSMEs, and large factories benefit the most because they can reduce grid dependence and capture long-term savings. Since MNRE promotes grid-connected rooftop solar, businesses with stable operations and predictable power demand are better placed to maximize returns.
Yes. Residential rooftop solar users installing systems under the CAPEX solar model can avail government subsidies through schemes such as PM Surya Ghar Muft Bijli Yojana, subject to eligibility criteria. Subsidies help reduce the initial installation cost and improve overall return on investment for homeowners adopting solar energy in India.
For a CAPEX rooftop solar system in India, the minimum practical rooftop size is usually around 10 square metres or 100 square feet of shadow-free area for every 1 kW of solar capacity. This means a 3-kW system may need roughly 300 square feet. The actual requirement can vary based on panel efficiency, roof layout, water tanks, parapet walls, shadows, and installation structure.
Yes. In many Indian states, rooftop solar systems installed under the CAPEX model in solar can benefit from net metering policies. Under this system, excess electricity generated by the solar plant can be exported back to the grid, and consumers may receive credits against future electricity consumption. Net metering rules may vary depending on the local DISCOM and state regulations.
Yes. Commercial and industrial consumers opting for the CAPEX model in solar may be eligible for tax-related benefits such as accelerated depreciation under applicable government policies. These benefits can help businesses recover their solar investment faster while improving overall project economics. The exact eligibility depends on prevailing tax regulations and business structure.
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