Electricity (Amendment) Rules 2026: The Biggest Captive Power Reform in Two Decades

For more than two decades, India's captive power framework rested on Rule 3 of the Electricity Rules, 2005 — the rule that defines the twin tests every captive generating plant (CGP) must satisfy: the 26% ownership condition and the 51% consumption condition. That framework served its purpose, but it had not kept pace with how modern corporate groups are actually structured, financed, and operated.

That changed on 13 March 2026, when the Ministry of Power notified the Electricity (Amendment) Rules, 2026 via G.S.R. 186(E) in the Gazette of India. The amendment substitutes Rule 3 in its entirety and introduces the most significant captive power reform since 2005.

What changed and when

The amendment targets the long-standing ambiguities that have generated years of litigation over captive status. Crucially, several of its most consumer-friendly provisions — including the CSS and Additional Surcharge deferral mechanism — take effect from 1 April 2026, with the substituted Rule 3 itself effective from notification on 13 March 2026.

Group entities as a single captive user

The headline reform is the explicit recognition that a company, together with its holding and subsidiary companies, can be treated as a single captive user. This resolves one of the most contested questions in captive power: when a corporate group sets up generation through one entity but consumes power across multiple group companies, does it qualify as captive?

Under the amended Rule 3, the answer is now clearly yes. A group can collectively own and consume power from a captive plant — enabling investment in non-fossil-fuel assets through dedicated subsidiaries or Special Purpose Vehicles (SPVs) without falling foul of the captive tests. For large industrial houses with multiple operating companies, this is transformative: it allows centralised renewable generation to serve the whole group under a single captive structure.

AoP & SPV clarity

The amendment also addresses the treatment of plants set up by an Association of Persons (AoP) — the common structure for group captive arrangements where multiple consumers hold equity in a generating SPV.

• SPVs treated as an AoP: The rules now treat Special Purpose Vehicles as an Association of Persons, removing interpretational ambiguities that previously clouded group captive structures.
• Proportionate consumption limit: For AoP-owned plants, a proportionate consumption limit applies. If an individual user consumes more than their ownership share permits, that excess is not treated as captive and attracts surcharges — preserving the integrity of the 26%/51% framework while adding clarity.
• 26% ownership carve-out: A carve-out effective from 1 April 2026 provides flexibility around the proportionate-consumption requirement for qualifying ownership structures.

CSS & Additional Surcharge deferral

Perhaps the most immediately valuable provision for working capital: pending the final verification of captive status, Cross-Subsidy Surcharge (CSS) and Additional Surcharge (AS) will not be levied — provided a declaration is filed.

Previously, consumers faced a difficult position during the period between commissioning and the annual captive verification: DISCOMs could insist on levying CSS and AS until captive status was formally confirmed, tying up significant working capital. The declaration-based deferral under Rule 3(4)(c), effective 1 April 2026, removes that burden — the consumer files a declaration and the surcharges are deferred pending verification.

Storage-mediated consumption recognised

The 2026 Rules expressly recognise Energy Storage System (ESS)-mediated consumption — acknowledging that captive power may now flow through batteries rather than being consumed instantaneously. This aligns the captive framework with the reality of solar-plus-storage and wind-plus-storage projects that are becoming the norm.

That said, the amendment leaves some questions open. Banking windows, deemed generation treatment, and the charging of grid-supplied ESS are not fully addressed and will require sector-specific guidance. Consumers structuring storage-paired captive projects should build in flexibility for this evolving guidance.

What C&I groups should do now

The 2026 Rules create a clear window of opportunity. Three priority actions:

1. Audit existing captive structures. Review all current CGP structures and any pending captive-status disputes against the new ownership definition and expanded group-entity framework. Some structures that were previously borderline may now clearly qualify.
2. Review intra-group supply agreements. For AoP and SPV structures, align constitutive documents with the proportionate-consumption cap and the 26%-ownership carve-out effective 1 April 2026.
3. File declarations to defer CSS/AS. Where new captive capacity is being commissioned, use the declaration-based deferral to protect working capital pending verification.

The Electricity (Amendment) Rules 2026 do not change the fundamental 26%/51% captive tests — but by recognising how modern corporate groups actually operate, they remove years of accumulated ambiguity and make captive renewable power meaningfully easier to structure. For industrial groups that have hesitated over captive due to legal uncertainty, the calculus has shifted decisively in favour of going ahead.