Indian Energy Exchange Ltd. makes a corporate announcement

The volume growth was monetised at a broadly fixed electricity transaction fee, not through a higher fee per unit. In the FY24 disclosure accompanying the Q4 results, DAM volume rose 4.3% to 53.4 BU, while RTM volume increased 25% to nearly 30 BU. ^{[1] [1]} The directly reported Q4 figure was 30.1 BU of electricity volume across all segments, up 15.7% YoY. ^[2]

Volume-to-fee reconciliation

• Reported fee: Management stated that the electricity transaction fee was 2 paise per unit on each side of the transaction—effectively 4 paise if buyer and seller charges are combined for the same matched unit. The fee was stated to apply irrespective of whether the traded electricity price was Rs 2 or Rs 20 per unit. ^[3]
• Implication: DAM and RTM volume growth should therefore translate broadly into transaction-fee growth at a stable nominal realization per unit; lower DAM or RTM clearing prices do not automatically reduce IEX’s fee realization. Transaction fees are accrued based on matched transaction volume, with RTM additionally requiring confirmation and delivery. ^[4]
• Why revenue growth can differ from aggregate volume growth: Management attributed the volume-revenue divergence mainly to incentives in the Term-Ahead and REC markets, rather than to a change in the stated electricity fee for DAM/RTM. ^[5]
• Mix shift: After GNA implementation, volume shifted from DAC into DAM: H2 FY24 DAM volume increased to 29.6 BU from 23.8 BU in H1, while DAC fell sharply. ^[6] This supports DAM volume growth without implying a change in per-unit pricing.

A precise Q4-only DAM or RTM fee realization cannot be calculated from the reported figures because Q4 segment-wise transaction-fee revenue and units are not separately disclosed.

Green Market and Certificate contribution

The newer segments were not reported with separate EBITDA or segment-cost allocations, so their precise contribution to the consolidated EBITDA margin cannot be computed.

Bottom line: DAM and RTM growth was primarily a volume-led monetisation story at a stable fee per unit, not a pricing-realisation story. Certificates were financially visible at roughly 5.50% of operating revenue, but their EBITDA-margin contribution is undisclosed; the Green Market was smaller and declining in volume, with no separately reported profit-pool contribution.

The latest FY26 Annual Report increases the prominence of market-coupling risk, but it does not quantify an expected market-share loss or disclose a finalized MCO fee structure. The fee issue remains explicitly unresolved in management commentary.

What the FY26 Board/Annual Report now flags

• Market coupling is classified as a direct regulatory risk. IEX states that regulatory changes can affect the competitive landscape, the long-term functioning of the exchange and transaction volumes. The report specifically identifies market coupling as a regulatory issue with a direct bearing on the exchange. ^[8]
• The immediate exposure is concentrated in DAM, not the entire volume base. DAM represented 39% of IEX’s FY26 traded volumes, down from 44% in FY25 and nearly 95% in FY15. The report presents this shift toward RTM and other products as a mitigation against dependence on a single market segment. ^[9]
• The company’s formal stance remains that the impact should be limited. The Annual Report says IEX believes the impact of market coupling would be minimal. This is management’s position, not a quantified sensitivity analysis. ^[9]
• The regulatory framework is still treated as incomplete. The report records the April 2026 draft regulations proposing Grid India as Market Coupling Operator, while noting that final regulations had not yet been issued. IEX also disclosed its continuing legal and regulatory engagement. ^[9]
• Operational preparedness has been added as a mitigation theme. IEX says it is strengthening technology, customer integration and financial resilience in anticipation of implementation; it highlights API-based integration and reports that nearly 72% of cleared I-DAM volume is contributed by API-enabled members. ^[9]

What has been disclosed on market share

Management has not provided a formal downside case in the Annual Report. In the July 2026 analyst meet, it said it did not expect a material loss of market share because of customer relationships, service quality and technology integration. Management also indicated that any impact would principally arise in DAM, while the broader business impact should be limited because DAM is now about 40% of total volume. ^{[10] [11]}

That is materially different from providing guidance: no specific post-coupling market-share floor, volume sensitivity or revenue sensitivity was disclosed.

What has been disclosed on the proposed fee structure

• No finalized fee schedule or fee percentage appears in the FY26 Annual Report disclosures.
• Management stated that it is still unclear whether any MCO-related fee would be charged to the exchanges or to end customers, and whether the shift of price discovery to the MCO could pressure exchanges to reduce their own transaction fees. Management expects these issues to be addressed through final regulations, operating procedures or subsequent CERC orders. ^[10]
• Grid India’s concerns also refer to the cost of operating and maintaining the MCO software, but the referenced 0.3% is the estimated increase in economic surplus from the pilot, not a proposed fee. ^{[12] [13]}

Analytical implication: the disclosure has become more explicit on the regulatory and volume-risk channel, while the principal earnings uncertainty—how bid collection, price discovery and fee monetisation will be allocated—remains unresolved. The company’s mitigation case rests on DAM diversification, customer stickiness and API integration rather than on a disclosed fee framework or quantified market-share scenario.

Verdict: IEX remains the clear scale leader, but the available Q2 FY27 evidence does not provide a like-for-like DAM or RTM market-share comparison against PXIL and HPX. IEX reported strong absolute volumes, while PXIL and HPX were mentioned only qualitatively, without same-period segment volumes.

Q2 FY27 volume comparison

The 37.4% and 41.6% figures are IEX product-mix shares, not IEX’s share of the total Indian DAM or RTM market. RTM was therefore the larger IEX segment in Q2 FY27, both in volume and in internal mix.

For broader context, IEX management stated in July 2026 that the exchange had maintained approximately 80% market share, but this was an overall power-exchange figure rather than a DAM/RTM split ^[18]. A Bonanza analyst separately cited approximately 84% overall market share in April 2026; that estimate is older and also not segment-specific ^[16]. The PXIL and HPX discussion in the same news coverage describes them as smaller exchanges that could potentially gain volumes under market coupling, but does not report their Q2 FY27 DAM or RTM volumes ^[16]. Consequently, an exact IEX-versus-PXIL/HPX market-share calculation would be unsupported.

Incentives and competitive pricing

The only explicit incentive disclosure is that IEX provides some incentives in REC and Term-Ahead markets, with the rationale that longer-duration Term-Ahead contracts warrant incentives ^[19]. The disclosure does not specify:

• the incentive rate or paise per unit;
• volume thresholds or slab structure;
• whether the benefit is a rebate, fee waiver, commission, or marketing expense; or
• the rupee amount charged to operating expenses.

Importantly, the disclosed policy is described as duration-based, not as a quantified DAM or RTM volume-based rebate. There is no current disclosure of a broad DAM/RTM fee war or a specific volume-linked operating-expense programme.

A possible competitive pricing response has been raised externally: a Bonanza analyst said IEX may need to reduce its trading margin to defend volumes as market coupling lowers the importance of exchange-level price discovery ^[16]. That is an analyst scenario, not evidence that IEX has already implemented a margin cut or booked it in operating expenses.

The currently disclosed competitive response is more clearly service-led—automated bidding APIs, customer analytics and faster payout infrastructure—than a quantified price-discount strategy. Management reported that more than 70% of I-DAM cleared volume used its bidding API solution ^[20], but did not separately quantify the associated operating cost.

_Scope note: this comparison also included BSE Ltd. (BSE), which the answer above does not cover. Ask about any of them for a full side-by-side._