Power Grid Corporation of India Ltd. makes a corporate announcement

The announcement does not disclose a project-wise split between cost-plus regulated-return and TBCB capex. It approves three projects totaling Rs 584.13 Crores: Rs 132.06 Crores for Tuticorin-II ICT augmentation, Rs 308.49 Crores for WR-region OPGW and communications, and Rs 143.58 Crores for the equivalent ER-region works. The filing identifies the project costs and commissioning timelines but does not classify any of them as RTM or TBCB. ^[1]

Accordingly:

• Total approved capex: Rs 584.13 Crores ^[1]
• Regulated Return / cost-plus portion: Not separately disclosed
• TBCB portion: Not separately disclosed
• Defensible percentage split: Cannot be calculated from the announcement

The route cannot be inferred reliably from the project descriptions alone. POWERGRID has stated that similar grid-extension projects may be awarded either to the incumbent regulated entity under RTM or through competitive bidding, with no fixed rule determining the route. ^[2]

RoE implication

A weighted-average RoE for this new asset base also cannot be calculated because the announcement provides neither the route allocation nor the equity invested in each project. The economics of the two models differ:

• Under the regulated RTM model, management has described a 15.5% return on equity, with equity representing approximately 30% of the project funding structure. ^[3]
• For TBCB projects, management has previously indicated an equity IRR of approximately 11–13%, with the possibility of higher returns if construction and operating efficiencies are achieved. ^{[4] [5]}

Therefore, a greater cost-plus allocation would generally imply a higher and more directly regulated return profile, while a greater TBCB allocation would make the blended return more dependent on bid pricing, execution costs, financing, and operating efficiency. That is a directional implication—not a reported or calculable projected weighted-average RoE for the Rs 584.13 Crores announced here.

The disclosed funding convention is approximately 80:20 debt-to-equity for incremental project funding, but this is a company-level financing assumption rather than a separately disclosed ratio for each project. POWERGRID estimated mobilising about Rs 35,000 Crores of debt in FY28, with the balance funded from internal resources. ^[6]

Funding implication

For any project cost of Rs 100, the implied funding would be approximately:

• Rs 80 debt
• Rs 20 equity or internal resources

This should be treated as a proxy, not confirmed project-level financing. The Rs 1,19,495 Crores bidding pipeline includes Rs 73,875 Crores under bidding and Rs 45,620 Crores yet to be floated; it is not all awarded or funded. ^[7] Applying the 80:20 convention mechanically to the full pipeline would imply approximately Rs 95,596 Crores of debt and Rs 23,899 Crores of equity, but that is not a committed borrowing requirement.

Leverage and borrowing headroom

POWERGRID’s latest Q1 FY27 presentation reported Rs 1,45,586 Crores of debt and Rs 1,04,028 Crores of net worth as of 30 June 2026, with a reported Debt:Equity capital mix of 58:42. ^[8] The company’s capital-management policy is to keep debt below 75% of total capital employed. ^[9]

A mechanical illustration of adding the proposed Rs 35,000 Crores debt and Rs 8,750 Crores equity to the June balance sheet would produce:

• Debt: approximately Rs 1,80,586 Crores
• Equity: approximately Rs 1,12,778 Crores
• Debt-to-capital: approximately 61.56%
• Conventional debt-to-equity: approximately 1.60x

This is an inference, not a forecast: it ignores repayments, retained earnings, timing of drawdowns and the fact that some borrowing may refinance existing debt. It suggests that the incremental programme would lift leverage, but the blended balance sheet would remain below the company’s stated 75% debt-to-capital threshold. The individual project funding mix, however, would be more debt-heavy than the existing 58:42 capital mix.

Headroom versus the planned borrowing requirement

The borrowing-limit arithmetic is tighter than the headline June headroom suggests:

• Current June debt of Rs 1,45,586 Crores versus the proposed Rs 2,20,000 Crores overall borrowing limit implies gross headroom of approximately Rs 74,414 Crores. ^[8]
• The company’s three-year funding plan includes Rs 14,562 Crores of loans already tied up but undrawn, Rs 1,09,200 Crores of proposed new loan tie-ups and Rs 51,072 Crores of repayments. This results in estimated total borrowings of approximately Rs 2,17,246 Crores, leaving only about Rs 2,754 Crores below the Rs 2,20,000 Crores limit. ^[10]

Read-through: the projects are financeable within the authorised borrowing envelope, but the planned programme would use almost all of that envelope by FY29. The Rs 74,414 Crores apparent headroom is therefore not fully discretionary once committed drawdowns, new project funding and scheduled repayments are considered.

POWERGRID has also approved an unsecured SBI term-loan or line-of-credit facility of up to Rs 4,000 Crores and ECB funding of up to USD 500 million, but utilisation and undrawn availability under these facilities have not been disclosed. ^{[11] [12]} The closest disclosed measure of committed but undrawn debt is Rs 14,562 Crores; aggregate facility headroom cannot be calculated from the reported information.

Confirmed project-level commissioning dates are limited. The only project in the cited material with a firm scheduled COD is the WR–ER Inter-Regional Network Expansion Scheme Part-A, which has an overall 36-month schedule from the Effective Date. Its components have staggered timelines of 24 months for Phase 1, 30 months for Phase 2 and 36 months for Phase 3. The Effective Date itself is not stated, so a calendar commissioning date cannot yet be derived. ^[13]

Commissioning tracker

Comparison with historical gestation

POWERGRID’s historical execution benchmark is not disclosed as a single calculated average. Management has stated that transmission lines historically took approximately 36–40 months, while the earlier 18-month schedules were considered impractical. The Government has since revised standard timelines to approximately 26–30 months or more. ^[16] In an earlier FY26 discussion, management said new projects were being planned around 30 or 36 months, rather than 18 or 24 months. ^[17]

Against that benchmark:

• The WR–ER project’s 36-month overall schedule is at the lower end of the historical 36–40-month cycle, implying a reduction of roughly 0–4 months versus the historical range. ^{[13] [16]}
• The 24-month Phase 1 and 30-month Phase 2 are shorter than the historical full-line cycle, but those are component-level timelines; the complete project remains a 36-month program. ^{[13] [16]}
• The 36-month schedule is therefore not an aggressive step-down from POWERGRID’s current realistic execution expectation. It is consistent with management’s stated 30–36-month planning window and appears more credible than the previously used 18–24-month schedules. ^[17]
• The FY26 portfolio target of completion progressively by 2030 provides useful visibility, but it cannot be converted into a comparable average gestation period without project start dates and individual CODs. ^[14]

Implication: the confirmed schedule points to a normalized gestation period of roughly 30–36 months for large contemporary transmission projects, versus the older 36–40-month historical cycle. The key uncertainty remains whether the current schedule is measured from the Effective Date after land, clearance and procurement milestones, or from an earlier award/acquisition date; those bases are not interchangeable. Right-of-way, land compensation, statutory clearances and equipment availability remain the principal execution risks. ^[18]