Additional Depreciation on Power Plants: Eligibility FAQs

Additional depreciation on power plants lets you claim an extra deduction (often 20% of the actual cost) in the first year of use, on top of normal depreciation, for new plant and machinery installed after a specified date. You are eligible if you are a business or professional user who has actually installed a new power plant for your own use, and the plant meets the definition of ‘new’ under the Income-tax Act. This article answers the most common eligibility questions with clear examples and practical context.

Formula

The additional depreciation is calculated as a flat percentage of the actual cost of the new plant or machinery. The standard rate is 20% for most assets, but it is 35% for new plant and machinery installed in a notified backward area in Andhra Pradesh, Bihar, Telangana, or West Bengal. The formula is:

Additional Depreciation = Actual Cost × Rate (20% or 35%)

Here, Actual Cost means the purchase price plus installation charges, freight, and any other directly attributable expenses, but it excludes GST input tax credit and interest on borrowed capital. The rate is 0.20 for general areas, 0.35 for the specified backward areas. Normal depreciation (e.g., 15% for many power-generating assets) is claimed separately.

Worked Example

Suppose you buy a new solar power plant for ₹10,00,000. The installation and freight add ₹50,000, so the actual cost is ₹10,50,000. You are in a general area, so the additional depreciation rate is 20%.

Additional Depreciation = ₹10,50,000 × 0.20 = ₹2,10,000

If the normal depreciation rate for the asset is 15%, you also claim ₹10,50,000 × 0.15 = ₹1,57,500. Your total first-year depreciation is ₹2,10,000 + ₹1,57,500 = ₹3,67,500. This matches the calculator output when you enter the actual cost (₹10,50,000) and the normal rate is 15%.

Background: Why Additional Depreciation Exists

Additional depreciation was introduced in 2015 to encourage manufacturing and power generation in India. The government wanted to boost investment in new plant and machinery, especially in the power sector, which requires heavy capital outlay. The provision is in Section 32(1)(iia) of the Income-tax Act, 1961. It is available only for the year in which the asset is first put to use, not for subsequent years. The idea is to give a cash-flow benefit upfront, reducing the tax burden when the investment is highest.

How It Works: Eligibility Conditions

To claim additional depreciation, you must meet all of these conditions:

• New asset: The plant must be new; it cannot be used or second-hand. It must be first used by you.
• Own use: You must use the plant for your own business or profession. If you lease it out, you generally cannot claim it unless the lease is for a business purpose.
• Installation date: The plant must be installed after March 31, 2015. Assets installed before that date are not eligible.
• First put to use: You must put the plant to use during the previous year. If you install it but do not use it, you cannot claim the deduction in that year.
• Not for residential use: If the plant is used for residential purposes, it is not eligible.

Also, the additional depreciation is not available for assets used in the business of power generation if they are not ‘new’ in the legal sense. For example, a refurbished turbine does not qualify.

How to Choose: Depreciation Rate and Asset Classification

Choosing the correct normal depreciation rate matters because additional depreciation is computed on the actual cost, not on the written-down value. The normal rate depends on the asset class under the Income-tax Rules. For power plants, common rates are:

• 15%: Most machinery and plant, including generators, turbines, and boilers.
• 30%: Certain energy-saving devices, renewable energy devices (solar, wind), and pollution-control equipment.
• 40%: Some specific high-efficiency assets, but rarely for power plants.

You do not ‘choose’ the rate; it is prescribed by the tax rules. However, you must correctly classify the asset. For example, a solar panel may fall under renewable energy devices at 30%, while a diesel generator falls under general machinery at 15%. If you misclassify, you may under or over-claim, leading to penalties.

Common Problems and Misconceptions

One frequent mistake is claiming additional depreciation on assets that are not new. Another is claiming it on the full cost including GST input credit, which is not allowed. Also, many taxpayers forget that additional depreciation is not available for assets used for less than 180 days in the year of installation—if you use it for less than 180 days, you get only 50% of the additional depreciation in that year, and the remaining 50% is allowed in the next year. This is a common trap. Additionally, if you claim depreciation on a power plant that is later sold, you may have to recapture the additional depreciation as income.

Comparisons: Additional vs. Normal Depreciation

Normal depreciation is spread over the asset’s useful life, typically 5-10 years, and is always available as long as you own the asset. Additional depreciation is a one-time extra deduction in the first year. For example, a ₹100 lakh turbine with a normal rate of 15% gives ₹15 lakh normal depreciation each year. With additional depreciation, you get an extra ₹20 lakh in year one, so your total first-year deduction is ₹35 lakh. In subsequent years, you get only the normal ₹15 lakh. The total depreciation over the asset’s life is the same; additional depreciation just accelerates it.

Costs and Documentation

There is no direct cost to claim additional depreciation, but you must maintain proper records. You need to keep invoices, installation contracts, and proof of first use. The actual cost must be reduced by any GST input credit claimed. Also, if you take a loan to buy the plant, interest is not part of the actual cost for depreciation purposes—it is a separate deduction under Section 36(1)(iii). Keep a fixed asset register showing the date of installation and first use.

Safety and Compliance

While this is a tax matter, not a physical safety issue, compliance is critical. Incorrect claims can lead to interest and penalties under Section 234B/234C. Always ensure that the asset is genuinely new and used for business. If the tax department audits, you must show the asset physically exists and is in use. For power plants, especially large ones, keep environmental and safety clearances as they may be relevant to the business use.

Frequently Asked Questions

Can I claim additional depreciation on a used power plant?

No. The asset must be new. A used power plant, even if imported and reconditioned, does not qualify. The term ‘new’ means it has not been used in India or abroad before.

Is additional depreciation available for wind or solar power plants?

Yes, but the normal depreciation rate may be higher (30% for renewable energy devices). The additional depreciation of 20% (or 35% in backward areas) applies on top of that, provided the asset is new and used for business.

What if I install the plant but don’t use it in the same year?

You cannot claim additional depreciation in that year. It is allowed only in the year the asset is first put to use. If you install in March but start using in April, you claim it in the next financial year.

How does the 180-day rule affect my claim?

If the asset is put to use for less than 180 days in the year of installation, you get only 50% of the additional depreciation (i.e., 10% instead of 20%). The remaining 10% is allowed in the immediately following year.

Can I claim additional depreciation on a power plant that I lease out?

Generally, no. The asset must be used for your own business or profession. If you lease it out, you are not using it yourself, so you lose the deduction. However, if you are in the business of leasing power plants, the asset may be considered used for your business, but this is a grey area—consult a tax professional.

Does additional depreciation apply to power plants installed before April 1, 2015?

No. The provision applies only to new plant and machinery installed after March 31, 2015. Older assets are not eligible.

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in cost | Actual cost of power plant | INR | 1000000 | 0 | 1000000000
out add_dep | Additional depreciation (20%) | INR | cost * 0.20 | 0
out normal_dep | Normal depreciation (if rate 15%) | INR | cost * 0.15 | 0
out total_dep | Total first-year depreciation | INR | (cost * 0.20) + (cost * 0.15) | 0