Firm, Green, and Cheaper Than Coal: Maharashtra's RTC Procurement Changes the Pricing Conversation

India's largest clean energy procurement debate has centred on intermittency. Maharashtra has just demonstrated that firm, round-the-clock renewable power can now be priced below the thermal alternative.

The Maharashtra Electricity Regulatory Commission (MERC) has adopted a tariff of Rs 5.90 per unit for the Maharashtra State Electricity Distribution Company's (MSEDCL) procurement of 2,500 MW of round-the-clock (RTC) renewable power a 25-year contract awarded to Adani Power through competitive bidding. The decision, issued on June 4, 2026, closes a procurement process that began in January 2026 and marks the first time a supply-based RTC renewable tender of this scale has been priced and adopted in India.

Why Rs 5.90/kWh Is Not a Routine Number

The significance of this tariff is structural, not incremental. MERC itself flagged that direct comparison with conventional renewable tariffs was unsuitable: this is a supply-based contract, requiring firm round-the-clock delivery, minimum monthly and annual capacity utilisation levels, peak-hour obligations covering 90% availability, and at least 51% traceable renewable energy content with financial penalties for non-performance. The comparison that matters is with firm thermal power, and on that measure, the Rs 5.90/kWh tariff clears every benchmark. Long-term thermal procurement in India currently carries levelised tariffs between Rs 6.31 and Rs 8.90 per unit, according to MSEDCL's own submissions to the Commission.

Four bidders participated in the tender, with aggregate offered capacity of 6,250 MW against the 2,500 MW tendered a 2.5x oversubscription that MERC cited as direct evidence of market competitiveness. Adani Power's opening bid of Rs 6.30/kWh was reduced to Rs 5.90/kWh through an electronic reverse auction. The margin between first and second bidder at close was a single paisa Rs 5.91/kWh by Lalitpur Power Generation Company.

The Demand Signal Behind the Procurement

MSEDCL's stated rationale for the procurement extended beyond conventional resource adequacy arguments. The distribution company explicitly cited rising demand for traceable green power from data centres and semiconductor manufacturing facilities in Maharashtra a category of industrial consumer that increasingly requires 24x7 renewable supply with verifiable origin, not just renewable energy certificates. This positions the RTC contract as a commercial infrastructure decision as much as a grid management one.

Maharashtra's peak demand is projected to reach nearly 33 GW by 2029-30, according to MERC's own assessment. A 2,500 MW firm renewable addition, structured to perform at 90% availability during peak hours, addresses a specific reliability gap that storage-backed and hybrid projects are only beginning to close at scale.

The Template Question

The procurement structure itself warrants attention. MERC approved several deviations from standard bidding guidelines including a single composite tariff fixed for 25 years, replacing the conventional two-part structure, and minimum bid sizes of 1,250 MW or 2,500 MW rather than the standard 250 MW threshold. The Commission justified each deviation on grounds of commercial viability and attracting competitive participation, but the net effect is a bespoke framework that other state utilities will now scrutinise closely.

The open question is replicability. The contract's design bundling 5,000 MW of contracted solar capacity with firm power from non-renewable sources or storage to guarantee round-the-clock supply depends on a developer's ability to integrate generation, storage, and scheduling at a scale that most utilities cannot yet mandate confidently. Adani Power's ability to deliver at Rs 5.90/kWh over 25 years will be watched as a proof point for whether this model can be standardised across states facing similar demand profiles.

What to Watch

• MSEDCL has been directed to submit the signed Power Purchase Agreement to MERC. The PPA execution timeline will indicate how quickly this capacity can be brought to financial close and construction start.
• Whether other large state discoms particularly in Uttar Pradesh, Tamil Nadu, and Karnataka, where industrial green power demand is rising move to replicate a supply-based RTC framework in their next procurement cycles.
• The 51% traceable renewable content threshold embedded in this contract will function as a de facto floor for future RTC tenders. Watch whether regulators in other states adopt this standard or set a higher bar as ESG disclosure requirements tighten for industrial consumers.