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Different types of solar installation models and why Capex is the best for MSMEs

Published on
September 18, 2024
Author
Anand Jain
Co-Founder & CEO
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While opting for solar, the type of financing model impacts various aspects, including project ownership, required investment, operations and maintenance, and expected returns for stakeholders. Therefore, it is crucial for businesses/consumers to make well-informed decisions when selecting the solar model. Depending on factors like energy consumption, roof size, project size and budget, consumers can choose the appropriate model.

Let us understand the different models in detail:

1. Capex

In a Capex solar power plant, the consumer has the complete ownership of the plant and invests the upfront costs either by putting in their own money or by taking a solar loan. The consumer can enjoy significant savings over the system’s lifetime as the solar plant keeps generating electricity. Moreover, the consumers are eligible to benefit from the tax incentives like accelerated depreciation. They can also realize a return on their investment over the system's lifespan. The payback period can vary from 2-3 years depending on the investment and electricity consumption.

Pros

Cons

Ownership: The consumer owns and manages the solar power system.

Operation: The consumer needs to either operate the plant themselves or hire a third-party for operations and maintenance.

The consumer is responsible for all maintenance, including solar panel cleaning, staffing for security, and maintaining the spares and warranties of the panels and inverters. The consumers must invest in the project maintenance separately other than the investment. 

Quality: Control over the type of technology and quality of project built

Additional resources: Dedicated team is needed at consumer’s end to evaluate system design, installation and operation.

Tax Benefits: The solar system becomes an asset on the consumer’s balance sheet; hence consumers can avail GST and Depreciation benefits

Performance risks Consumer bears all the performance risk and must manage equipment & downtime losses.

In case of system failure, the components replacement and warranty claims have to be managed by the consumer.

  • Usage: The generated electricity is primarily used for self-consumption and in case of excess electricity can be exported to the grid through net metering.
  • Best for: Businesses with high energy consumption, particularly MSMEs (Micro, Small, and Medium Enterprises).

The cost of a CAPEX model can start from anywhere around Rs.35000/kW – Rs. 50,000/kW depending on the components, inclusions and size of the solar power plant.

2. RESCO (Renewable Energy Service Company)/PPA/OPEX model

In a RESCO model, a project developer or an investor will invest the entire cost of the solar power plant installed on the rooftop. The investor recovers the money invested by charging the consumer a mutually agreed (Power-Purchase agreement) tariff for the number of units generated by the solar rooftop plant. The consumer will be billed monthly based on the number of units generated by the solar rooftop plant for a pre-determined number of years, say 10,15,20, or even 25. Hence the consumer is billed for an agreed tariff for the coming years which ensures that the business doesn’t suffer from rising grid electricity prices.

Pros

Cons

No Upfront Investment required: As the investor/developer owns the plant, they will pay the project cost.

No Ownership Investor will own the solar power plant, although the solar plant is in the consumer’s premises.

Operation: The investor /developer is responsible for operations and maintenance.

Credit rating: An investor/developer will only invest if the consumer’s business and look for a decent credit rating or will require the audited statements to ensure credibility of repayment.

Cheap electricity: Consumer enjoys cheap electricity and pays for the power generated under a long-term power purchase agreement (PPA) at an agreed tariff for a fixed tenure.

No Tax benefits can be availed by the customer in this case.

  • Usage: The consumer uses the power generated by the system during the lease period and hence is billed for the same.
  • Ideal for:  Consumers that prefer variable costs linked to units generated without upfront investment. However, developers tend to invest in medium to large-scale projects to make it viable. Hence an MSME looking to install 50kW-100kW might not interest developers.

The solar tariff agreed can be 30-40% cheaper than the DISCOM tariff. There could be a flat tariff or an escalating one depending on the agreement between the consumer and the developer.

3. Lease Model

The lease model is very similar to the RESCO or PPA model where the businesses don’t own the solar plant but unlike RESCO, here the business pays a fixed amount monthly irrespective of the solar units generated. In case of RESCO, you pay for the units generated by the solar rooftop plant.

Pros

Cons

Investment: The consumer pays a fixed lease amount for using the system and can buy back the system at the end of the tenure.

Ownership: The solar power system is owned by the leasing company.

 

Operation: The leasing company usually manages operations and maintenance.

Credit rating: Leasing company will only invest if your business has a decent credit rating or will require the audited statements to ensure credibility of your repayment

  • Usage: The consumer uses the power generated by the system during the lease period and pays a fixed amount.
  • Best for: Consumers that prefer fixed costs without upfront investment.

Capex Model for solar power plants and why they make sense for MSMEs?

  1. Cost Savings: By investing in Capex solar power, MSMEs can significantly reduce their electricity expenses and help themselves from potential future increases in electricity tariffs.
  2. Asset Ownership: In a Capex setup, unlike other models, the MSME has complete ownership of the solar power asset. This ownership not only adds substantial value to the business but also enables the business to take advantage of various incentives, such as accelerated depreciation benefits.
  3. Financing Options: Many financial institutions/ NBFCs offer attractive financing options for MSMEs to invest in solar power plants. Hence, MSMEs who do not want to put an upfront investment can take a solar loan and still enjoy the benefits of the Capex model.
  4. Long-Term Benefits: While the upfront investment is higher, Capex solar installations provide long-term benefits you start saving on electricity bills early on and will enjoy solar power for 25 years.
  5. Control Over Energy Production: Investing in a Capex solar power plant empowers MSMEs to oversee and manage their own energy generation. This guarantees a consistent and dependable power supply, particularly in areas plagued by frequent power outages, which have the potential to disrupt day-to-day operations.
  6. Environmental Impact: By generating their own clean energy, MSMEs contribute to reducing carbon emissions, which can enhance their brand reputation and align with sustainability goals. Moreover, MSMEs can be early movers giving them an advantage of being ahead when their bigger clients take serious measures towards net-zero.

The Capex solar model presents an ideal solution for MSMEs, offering long-term cost savings, control over energy production, asset ownership benefits, and a positive environmental impact. Despite the initial investment (which can be secured through financing options), the substantial benefits often outweigh the costs, making it particularly advantageous for businesses with high energy consumption.

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