Tamil Nadu cannot tax inter-state open access electricity purchases under Article 269A, but captive generation tax remains valid

Madras HC held that Tamil Nadu cannot levy electricity tax on inter-state open access purchases as they fall under inter-state trade or commerce, outside state jurisdiction per Article 269A. The court ruled that the Tamil Nadu Electricity Tax Act 2003 does not cover intra-state open access transactions, quashing G.O.Ms.No.55/2021 attempting such levy. However, tax on captive generation for own use remains valid under Section 3(1)(c). The court upheld G.O.Ms.No.121/2010 authorizing TANGEDCO to collect taxes on captive generation, finding the collection mechanism through licensees lawful under existing statutory framework.

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The core legal questions considered by the Court in this batch of writ petitions relate to the validity and scope of taxation imposed by the State of Tamil Nadu on electricity consumption, particularly addressing the following issues:

(i) Whether the State of Tamil Nadu has the power to collect tax on electricity supplied and consumed through inter-State open access systems or purchases through power exchanges such as the Indian Energy Exchange (IEX) and Power Exchange India Limited (PXIL).

(ii) Whether the Tamil Nadu Tax on Consumption or Sale and Electricity Tax Act, 2003 (Act 12 of 2003), enacted without reference to the concept of open access and power purchases through exchanges, can be applied to levy and collect tax on intra-State consumption of electricity procured through open access systems.

(iii) Whether tax is leviable on captive generation and consumption of electricity under the said Act.

(iv) Whether the impugned Government Order G.O.Ms.No.121, dated 23.12.2010, which designates officers for collection of electricity tax, is liable to be quashed on grounds of procedural or substantive illegality.

(v) Whether the collection of tax through licensees such as TANGEDCO is illegal due to the absence of a statutory mechanism for assessing and collecting such tax.

Issue-wise Detailed Analysis:

(i) Power of the State to Collect Tax on Electricity Supplied and Consumed Through Inter-State Open Access Systems/Purchases Through Exchanges

The legal framework centers on Entry 53 of List II of the Seventh Schedule of the Constitution of India, which empowers States to levy tax on the consumption or sale of electricity. Section 3(1)(c) of Act 12/2003 imposes tax on electricity consumption by persons other than licensees, at rates notified by the Government.

The Court analyzed the nature of electricity as "goods" under Article 366(12) and judicial precedents, including a Constitution Bench judgment which held that electricity cannot be stored and that generation, sale, supply, and consumption occur simultaneously without any hiatus. This principle implies that consumption and sale are inseparable for taxation purposes.

However, the introduction of the Indian Electricity Act, 2003, and the concept of open access, permitting consumers to purchase electricity directly from generators or exchanges, complicates the traditional understanding. Open access allows consumers to procure electricity through inter-State transmission systems, with associated wheeling and transmission charges regulated by Central and State Commissions.

The Court noted the constitutional amendments via the One Hundred and First Amendment Act, 2016, adding Article 269A and modifying Article 286, which govern the levy and collection of Goods and Services Tax (GST) on inter-State supplies, including electricity. These provisions restrict States from imposing tax on supplies occurring outside their territory or in the course of inter-State trade or commerce.

Given that electricity purchased through exchanges like IEX is treated as an inter-State transaction, the Court held that the State of Tamil Nadu lacks the constitutional competence to levy tax on such inter-State electricity consumption, despite the consumption physically occurring within the State. The Court emphasized that Section 3(1)(c) of Act 12/2003 cannot be interpreted to override the constitutional restrictions imposed by Articles 269A and 286.

(ii) Applicability of Act 12/2003 to Open Access Purchases and Intra-State Consumption Without Subsequent Amendments

The Act 12/2003 was enacted prior to the Electricity Act, 2003, and before the open access regime was introduced. The Court acknowledged that tax statutes are generally technology-neutral and may apply to new forms of transactions arising after enactment, provided the language of the statute covers them clearly.

However, the Court found that Section 3(1)(c) specifically taxes consumption "for own use" by persons other than licensees, a phrase interpreted to apply primarily to captive generating plants. The term "consumer" is notably absent in this charging provision, indicating legislative intent to exclude open access consumers from this tax.

The Court held that the Government Order G.O.Ms.No.55, dated 20.10.2021, which directs TANGEDCO to collect tax on electricity procured through exchanges and open access, is not supported by the charging provisions of the Act and is therefore liable to be quashed. The Court left open the possibility for the State to amend the Act to expressly cover intra-State open access purchases if it so desires.

(iii) Levy of Tax on Captive Generation and Consumption

The Act defines "captive generating plant" as a power plant set up primarily for own use, with allowance for sale of surplus power. The definition of "consumer" includes persons supplied electricity by licensees or those consuming self-generated electricity.

Section 3(1)(c) imposes tax on consumption for own use by persons other than licensees, which includes captive generating plants. The Court affirmed that the State is entitled to levy and collect tax on captive generation and consumption at the prescribed rates (not less than Rs. 0.10 and not more than Rs. 0.20 per unit).

(iv) Validity of G.O.Ms.No.121, dated 23.12.2010

This Government Order designates various officers and officials of TANGEDCO and the Electricity Department as authorities for collection and inspection of electricity tax under Act 12/2003. The petitioners challenged this order on grounds that it contradicts the Act and Rules and lacks a proper mechanism for assessment and collection.

The Court examined the statutory provisions, including Sections 5 (registration), 7 (recovery as arrears), 8 (maintenance of accounts and returns), 9 (assessment procedure), 10 (appeal), 12 (appointment of inspecting officers), and 13 (powers of inspecting officers), along with the Rules framed under the Act.

It was held that the Act and Rules provide a comprehensive mechanism for levy, assessment, collection, and enforcement of electricity tax. Since TANGEDCO is the distribution licensee with access to metering data and billing infrastructure, it is appropriate and lawful for TANGEDCO and its officers to collect the tax. The Government Order does not violate the Act or Rules and is therefore upheld.

(v) Legality of Collection of Tax Through Licensee in Absence of a Statutory Mechanism

The Court rejected the contention that collection of tax through licensees is illegal due to lack of statutory procedure. The Act and Rules explicitly empower licensees to include electricity tax as a separate item in consumer bills and to recover the tax along with consumption charges. The statutory framework includes provisions for registration, accounting, assessment, inspection, and appeals, providing a valid mechanism for collection and enforcement.

Therefore, the collection of tax through TANGEDCO is lawful and consistent with the statutory scheme.

Significant Holdings and Core Principles:

"The taxing event is the consumption of energy. The source from which the electricity is acquired is altogether irrelevant." (Paragraph 48)

"Electricity is goods. It is capable of abstraction, consumption and use... electricity cannot be preserved or stored; generation, sale, supply, and consumption occur simultaneously without any hiatus." (Paragraph 50)

"Entry 53 should therefore be read as 'taxes on the consumption or sale for consumption of electricity'." (Paragraph 50)

"The State of Tamil Nadu lacks the power to impose tax on electricity procured through inter-State open access systems or exchanges, as such transactions fall within the domain of inter-State trade or commerce governed by Article 269A and Article 286 of the Constitution." (Paragraph 58)

"Section 3(1)(c) of Act 12/2003 does not cover consumers procuring electricity through open access or power exchanges; it is confined to captive generating plants consuming electricity for own use." (Paragraph 61)

"The Government Order G.O.Ms.No.121, dated 23.12.2010, is a valid delegation of authority to TANGEDCO and its officers to collect electricity tax under the Act and Rules, given their access to metering and billing data." (Paragraph 67)

"The collection of electricity tax through licensees is lawful and supported by the statutory provisions, including provisions for assessment, inspection, and appeals." (Paragraph 69)

Final Determinations:

(i) The State of Tamil Nadu does not have the constitutional or statutory power to levy and collect tax on electricity consumed through inter-State open access systems or purchased via power exchanges such as IEX or PXIL. Such transactions are inter-State supplies and fall under the exclusive jurisdiction of the Union under GST provisions.

(ii) The Tamil Nadu Act 12/2003, as presently enacted, does not encompass intra-State open access purchases or power exchange transactions. The Government Order G.O.Ms.No.55, dated 20.10.2021, attempting to levy tax on such consumption through TANGEDCO, is quashed.

(iii) Tax on captive generating plants consuming electricity for own use is validly leviable under Section 3(1)(c) of Act 12/2003, and the State may collect such tax at prescribed rates.

(iv) The Government Order G.O.Ms.No.121, dated 23.12.2010, which designates collection authorities and empowers TANGEDCO and its officers to collect electricity tax on captive generation and consumption, is upheld as valid and consistent with the Act and Rules.

(v) The mechanism for collection of electricity tax through licensees is lawful, and the absence of a separate statutory procedure does not invalidate the collection process under the existing statutory framework.

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