ACME Solar Holdings Ltd. announces a new order win

The discovered tariff is Rs 6.00 per kWh for the entire 25-year PPA tenure. The Letter of Award specifies the supply commencement timeline as 18 months from the date of PPA signing. The filing refers to this milestone as the Scheduled Commencement of Supply Date (SCSD); it does not provide a calendar date for it. ^[1]

This 18-month deadline is the applicable commissioning/supply milestone for meeting SECI’s assured peak-power obligations.

The 300 MW assured peak-power award implies estimated capex of about Rs 7.08 Crores per MW, based on total project capex of Rs 2,123 Crores. The comparable disclosed benchmark for the company’s 1,200 MW Jaisalmer project is about Rs 3.67 Crores per MW, implying the storage-backed award is approximately 1.93x higher, or 93% more capex-intensive per MW.

Calculation:

• Award: Rs 2,123 Crores / 300 MW = Rs 7.08 Crores/MW
• Benchmark: Rs 4,400 Crores / 1,200 MW = Rs 3.67 Crores/MW
• Premium: Rs 7.08 / Rs 3.67 − 1 = approximately 93%

The premium is directionally consistent with the award’s inclusion of a 1,350 MWh battery-storage system alongside solar generation, whereas the Rs 4,400 Crores benchmark relates to the disclosed 1,200 MW Jaisalmer project and is not separately broken down by technology. ^[4] Accordingly, the comparison should be treated as indicative rather than a fully like-for-like solar-only benchmark.

Verdict: The 300 MW award increases ACME Solar’s exposure to Assured Peak Power rather than adding conventional “Vanilla Solar.” It therefore improves dispatchability and revenue visibility, but should create a modest downward mix effect on EBITDA margin versus a pure-solar portfolio, because storage-related charging power is accounted for in operating expenses.

Project-mix impact

The entire 300 MW addition is contracted under SECI’s Assured Peak Power tender, which requires supply equivalent to a four-hour peak-power profile rather than ordinary intermittent solar generation ^[1]. On the tender structure, the project implies approximately 1,200 MWh of storage capacity—300 MW × four hours, derived from the disclosed four-hour requirement ^[1].

The percentage change in the company-wide Vanilla Solar versus Assured Peak Power mix cannot be calculated because the existing operational-capacity split between the two categories has not been disclosed in the cited material. The direction of change is clear: the portfolio becomes more storage-oriented, but the magnitude of the shift remains unquantified.

EBITDA-margin implications

Management’s latest reported operating benchmarks show approximately 91% EBITDA margin for core renewable operations excluding BESS, around 82% for BESS, and 87-89% for the overall business ^[5]. Management attributed the lower BESS margin primarily to the cost of electricity purchased to charge the batteries being included in operating expenses ^[5].

Accordingly, assuming the new project’s economics are broadly comparable with those current benchmarks:

• The 300 MW project should dilute the blended EBITDA margin relative to an equivalent Vanilla Solar addition.
• The effect should be incremental rather than transformational, because the project adds storage-linked capacity but does not replace existing solar capacity.
• As more Assured Peak Power assets become operational, the company’s future portfolio margin is likely to remain in the high-80% range, rather than track the approximately 91% core-renewables benchmark.
• The trade-off is better product quality—firm, dispatchable power and a 25-year contracted revenue stream—against lower reported margin due to storage charging costs.

This is a directional margin conclusion, not a project-specific forecast. EBITDA margin is revenue-weighted, not MW-weighted, and ACME has not disclosed the project’s standalone EBITDA, storage operating cost, generation profile, financing cost, or eventual contribution to consolidated revenue. Therefore, the precise impact on future blended EBITDA margin cannot yet be quantified.