Tata Steel × ReNew RTC Supply
India's largest industrial round-the-clock RE contract — captive solar-wind-storage replacing grid power for steel.
Footage · Tata Steel · YouTube
966 MW
Contracted RTC capacity
One of India's largest single industrial RTC contracts
approx. 25 years
PPA tenure
Typical long-term RTC structuring for industrial offtake
Solar+Wind+BESS
Technology mix
Hybridisation needed to firm power for continuous load
2 states
Geographic spread
Odisha and Jharkhand generation sites pooled to one offtaker
approx. ₹8,000-10,000 cr
Estimated investment
Combined generation, storage and transmission capex
approx. 2-3 MtCO2/yr
Emissions avoided
Estimated based on captive coal-power displacement
2022
Large-scale RTC supply agreement announced between an industrial offtaker and a renewable developer for approx. 966 MW firm power.
2023
Site identification and land aggregation begin across Odisha and Jharkhand for solar, wind and storage components.
2023-24
Financial closure and EPC contracting for hybrid generation assets and battery storage progress in phases.
2024
First tranches of solar and wind capacity commissioned; grid connectivity and transmission corridors finalised.
2025
Phased ramp-up toward full RTC delivery, with storage dispatch algorithms tuned to industrial load curves.
This is one of India's largest corporate round-the-clock renewable supply deals, combining solar, wind and storage to displace grid power for a major steel operation. It signals that heavy industry can contract at industrial scale for firm RE, and shows lenders, EPC players and utilities how RTC structures, multi-state generation pooling and storage integration can be bankable at gigawatt-scale for hard-to-abate sectors.
As India pushes Green Open Access rules, RTC tenders by SECI and state discoms, and mandates for industrial decarbonisation under PAT and CBAM pressure, this project is a template for how large consumers can structure firm renewable supply directly. It highlights the need for standardised interstate transmission charges, clearer storage regulations, and bankable RTC PPA templates that Indian lenders and regulators can replicate across sectors like cement, aluminium and chemicals.
Engineering, procurement and finance lessons
01
RTC needs multi-technology stacking, not single-source PPAs
Meeting continuous industrial load required blending solar, wind and battery storage across sites rather than relying on one technology. Developers must model generation complementarity hour-by-hour and size storage for both ramping and evening peak support, not just backup.
02
Interstate pooling demands early transmission planning
Sourcing power across Odisha and Jharkhand for a single offtaker requires early coordination with state and central transmission utilities on open access, banking and interstate wheeling charges, since these materially affect delivered tariff economics and project bankability.
03
Long-tenure RTC PPAs need robust risk-sharing clauses
A 25-year RTC contract must clearly allocate curtailment, grid outage, storage degradation and force majeure risks between developer and offtaker upfront, since ambiguity here is a common cause of refinancing and lender comfort issues in India's hybrid RE market.
04
Captive industrial demand can de-risk large RE portfolios
A single, creditworthy industrial offtaker willing to sign firm-power contracts at scale gives lenders confidence that is harder to get from distribution utility PPAs alone, enabling faster financial closure for gigawatt-scale hybrid projects.
05
Storage sizing is the real cost lever, not generation capacity
Achieving round-the-clock reliability is far more sensitive to battery capacity, duration and dispatch strategy than to adding marginal generation MW, making storage design the key techno-economic variable EPC and finance teams must optimise jointly.
Sources · Ministry of New and Renewable Energy (MNRE) · Central Electricity Authority (CEA) · Mercom India · PIB India · CEEW
- Structuring bankable RTC PPAs with clear risk allocation for storage, curtailment and transmission across multiple states.
- Advising on optimal solar-wind-storage sizing and dispatch strategy to minimise delivered cost per firm MWh.
- Supporting green financing, lender due diligence and transmission approvals for gigawatt-scale hybrid industrial RE projects.