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Decoding Opex vs. Capex Solar Models in India

Considering solar energy for your home? You’ve got two financing choices: the upfront investment, or letting a third party handle the costs. These are known as the OPEX and CAPEX model, each with its perks and drawbacks. But here’s the deal: whether you foot the bill or not, going solar can cut your monthly energy expenses by a whopping 70-80%! So, how do you pick the right system? Let’s break down the OPEX and CAPEX solar model to find out.

What does the OPEX Model in Solar Provide?

Ever heard of the Open Expenditure or OPEX model in solar? It’s like shifting the solar burden to a third party, making up for the hiccups of CAPEX model setups. 

If you are wondering, “What is Opex model in solar?” Picture this: you’re all for clean energy, but the cash for the switch isn’t in your wallet just yet. That’s where a Renewable Energy Service Company (RESCO) steps in. They’ll handle the cost of setting up a solar plant while you provide the space. It’s a win-win! This arrangement, also known as a land lease model, spells out cheaper, risk-free electricity for you. 

Here’s how: With solar developers you sign a Power Purchase Agreement (PPA) for about 15-25 years. During this time, they supply you with energy at a rate lower than what you’d fork out for grid power. And when does the PPA wind up? The solar setup becomes yours, with no strings attached.

Let’s explore the pros and cons of the solar OPEX model in a down-to-earth manner:


Low Upfront Costs: With OPEX model solar, you don’t need to empty your savings account upfront. The third party takes care of the initial investment, making it easier to go solar without breaking the bank.

Risk-Free: Since the third party handles everything from installation to maintenance, you’re not on the hook for any unexpected expenses or technical glitches. 

Predictable Energy Costs: With a fixed-rate Power Purchase Agreement (PPA), you know exactly how much you’ll pay for your electricity over the contract period. 


Long-Term Commitment: Signing a PPA typically locks you in for 15-25 years. While this ensures stable energy prices, it also means you’re committed to the arrangement for the long haul.

Limited Control: Since the third party owns and operates the solar system, you have limited control over its maintenance and operation. 

Potential for Higher Costs: While OPEX solar models often tout lower initial costs, over the long term, you might end up paying more over owning the system outright. It’s essential to crunch the numbers and consider your financial goals before committing.

Let’s Understand the CAPEX Model

In the CAPEX model solar, also known as Capital Expenditure, you foot the bill for everything related to your solar setup—equipment, installation, and upkeep. Yep, it is a hefty upfront investment, but here is the silver lining: you own the whole deal. And that ownership comes with perks like tax breaks, depreciation benefits, and even the chance to sell excess power back to the grid for some extra cash. 

Plus, there’s the option of taking a solar loan to ease the financial load while still reaping the rewards. The CAPEX model is perfect for those who have the funds to dive into solar headfirst. And with the savings on your energy bills, you could recoup your initial investment in just 5-6 years. It’s like planting seeds now for a greener, more cost-efficient future.

Here are the pros and cons of the CAPEX model:


Ownership and Control: When you go the CAPEX route, you own your solar system outright. That means you have full control over how it’s maintained and operated, giving you peace of mind and a sense of independence.

Financial Benefits: Owning your solar setup comes with perks like tax credits and depreciation benefits, putting more money back in your pocket come tax time. Plus, if you produce more energy than you use, you can sell it back to the grid and earn some extra money.

Long-Term Savings: While the upfront cost might sting a bit, the long-term savings on your energy bills can add up quickly. With the CAPEX solar model, you’re investing in a future where you spend less on electricity and more on things you love.


High Initial Investment: Let’s face it, the upfront cost of buying and installing a solar system can be pretty hefty. Not everyone has that kind of cash lying around, which can make the CAPEX model inaccessible for some.

Maintenance Responsibility: With ownership comes responsibility. You’ll need to stay on top of maintenance and repairs to keep your solar system running smoothly. 

Long Payback Period: While the savings over time can be significant, it might take a while to recoup your initial investment. If you’re looking for quick returns, CAPEX might not be the best fit for your financial goals.

Determining the Which Model is the Best for You

Choosing between the CAPEX and OPEX models for your solar setup? Here’s some points to help you make the right call:

Consider Your Financial Situation

If You Have the Cash: If you’ve got the funds upfront and don’t mind the initial investment, the CAPEX solar model might be the way to go. You’ll enjoy ownership benefits and long-term savings.

If Cash is Tight: If spending a large sum is not feasible right now, the OPEX solar model could be a better fit. You’ll avoid the hefty upfront costs and can start saving on energy bills from day one.

Evaluate Your Long-Term Goals

Ownership vs. Convenience: Do you value ownership and control over your solar system? If so, CAPEX model solar gives you the reins. But if you prefer a hassle-free setup with someone else handling the details, OPEX solar might be more your speed.

Financial Flexibility: Consider your future financial plans. If you’re comfortable with a long-term investment and want to maximize savings over time, CAPEX could align with your goals. On the other hand, if you prefer flexibility and want to avoid a long-term commitment, OPEX might be a better fit.

Assess Your Risk Tolerance

Risk vs. Security: With CAPEX, you bear the risk of maintenance and system performance. If you’re handy and don’t mind taking on occasional repairs, this might not be a concern. But if you prefer a worry-free setup, OPEX solar companies handle the maintenance for you.

Market Changes: Consider how comfortable you are with potential changes in energy prices and regulations. With OPEX solar companies in India, you’re locked into a fixed-rate agreement, providing stability. But with CAPEX, you’re more exposed to market fluctuations, which could impact your savings over time.

Ultimately, the right model depends on your unique circumstances, preferences, and long-term goals. You can reach out to OPEX model solar companies in India to understand their structure properly. Take your time to weigh the pros and cons of each option before making the decision.

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