SECI 4.455 MW Rooftop Solar RESCO Tranche IX Winners

Direct Answer

The Solar Energy Corporation of India (SECI) has announced winners for 4,455 kW (4.455 MW) of grid-connected rooftop solar capacity under RESCO mode, Tranche IX (RfS No. SECI/C&P/IPP/11/0021/25-26). Renergo Developers Private Limited emerged as the dominant L1 bidder, winning 10 of 14 projects across central universities and government facilities, with tariffs ranging from Rs 2.94 per kWh to Rs 3.75 per kWh. The tender, floated on April 10, 2026, attracted 22 techno-commercial bidders, with an average of 9 to 12 bidders competing per site — reflecting strong developer interest in the RESCO rooftop solar model.

Key Takeaways

• 4.455 MW total capacity: SECI awarded 14 rooftop solar projects totaling 4,455 kW under RESCO mode, Tranche IX.
• Renergo dominance: Renergo Developers Private Limited (Delhi) won 10 of 14 projects, securing the L1 position across most sites.
• Tariff range: Winning tariffs ranged from Rs 2.94 per kWh (Visva Bharati University, 2,000 kW) to Rs 3.75 per kWh (CSU Agartala, 200 kW).
• 22 bidders participated: The tender drew 22 techno-commercial bidders, with an average of 9 to 12 bidders per site, indicating robust competition.
• Institutional hosts: All 14 projects are at central universities and government facilities, including Visva Bharati University, CSU Bhopal, IIITDM Kancheepuram, and IIIT Bhagalpur.
• RESCO model: Developers bear total investment and maintenance; host institutions provide rooftop space and purchase electricity at a preset tariff under a 25-year PPA with zero upfront capital expenditure.
• C&I pricing benchmark: The Rs 2.94-3.75 per kWh tariff range serves as a reference point for C&I RESCO model pricing in the rooftop solar segment.

Full Winner List: SECI RESCO Tranche IX

The following table lists all 14 awarded projects, their locations, capacities, winning developers, and tariffs:

The bottom line is that Renergo Developers Private Limited dominated this tranche, securing 10 of 14 projects and capturing the lowest tariff across the entire auction at Rs 2.94 per kWh for the 2,000 kW installation at Visva Bharati University in Birbhum. The remaining four projects were split among GP Eco Solutions India, Cleanco Renewables, and AGF Energy Infra.

Understanding the RESCO Model

The RESCO (Renewable Energy Service Company) model is a zero-capex rooftop solar procurement structure designed for institutions and organizations that want to adopt solar without bearing upfront capital costs. Under this model:

• Developer investment: The developer bears the total investment for design, engineering, supply, installation, and commissioning of the rooftop solar system.
• Host institution role: The host institution provides rooftop space and purchases the electricity generated at a preset tariff for the duration of the PPA.
• 25-year PPA: The power purchase agreement runs for 25 years, during which the developer handles operations and maintenance, including equipment replacement and insurance.
• No upfront cost: The institution pays nothing upfront — it only pays for the electricity consumed at the agreed tariff rate, which is typically lower than grid electricity rates.

This structure is particularly attractive for government institutions, universities, and public facilities that may have limited capital budgets for solar infrastructure but have substantial rooftop space and consistent daytime electricity demand. For a deeper comparison of procurement models, see our guide on the RESCO/OPEX solar model in India.

Scope of Work Under Tranche IX

SECI's RfS document for Tranche IX defined a comprehensive scope of work for winning developers:

• Design, engineering, supply, and installation of grid-connected rooftop solar systems
• Civil works associated with mounting structures and electrical infrastructure
• Obtaining all necessary No Objection Certificates (NOCs) from relevant Distribution Companies (DISCOMs)
• Net metering arrangements and grid connectivity compliance per State Electricity Regulatory Commission (SERC) and Central Electricity Authority (CEA) regulations
• Operations and maintenance for the full 25-year PPA term, including equipment replacement and insurance coverage

This means the developer assumes full lifecycle responsibility — from initial design through 25 years of operation — making the RESCO model a turnkey, hassle-free proposition for host institutions.

Auction Dynamics and Competition

Bidder Participation

The Tranche IX tender, floated on April 10, 2026, generated strong developer interest:

An average of 9 to 12 bidders per site is a healthy level of competition for rooftop solar tenders of this scale, particularly given the relatively small individual project sizes (ranging from 50 kW to 2,000 kW). This level of participation indicates that developers see viable economics in the RESCO model even at modest project scales, and that institutional rooftop solar remains an attractive segment.

Tariff Analysis

The winning tariffs reveal several patterns:

1. Scale advantage: The largest project — Visva Bharati University at 2,000 kW — secured the lowest tariff at Rs 2.94 per kWh, reflecting the economies of scale that larger rooftop installations can achieve.
2. Renergo pricing strategy: Renergo's tariffs ranged from Rs 2.94 to Rs 3.75 per kWh across its 10 winning projects, suggesting a site-specific bidding approach that accounts for local conditions, grid charges, and installation complexity.
3. Competitive undercutting: GP Eco Solutions India won the CSU Jaipur project at Rs 3.04 per kWh, and Cleanco Renewables won IIITDM Kancheepuram at Rs 3.10 per kWh — both competitive rates that outbid Renergo at those specific sites.
4. Geographic variation: Tariffs trended higher for sites in geographically challenging or smaller-scale locations, such as CSU Agartala (Rs 3.75 per kWh, 200 kW) and CSU Thrissur (Rs 3.65 per kWh, 140 kW).

In short, the tariff spread of Rs 0.81 per kWh between the lowest and highest winning bids illustrates how project-specific factors — capacity, location, grid regulations, and installation complexity — materially influence rooftop solar economics under the RESCO model.

Developer Profiles

Renergo Developers Private Limited

Renergo Developers Private Limited, based in Delhi, was the standout performer in Tranche IX, winning 10 of 14 projects and securing the lowest tariff across the entire auction. The company's ability to win projects across diverse geographic locations — from Birbhum in West Bengal to Bhopal in Madhya Pradesh to Agartala in Tripura — demonstrates a national execution capability and a competitive cost structure in the rooftop RESCO segment.

Other Winners

GP Eco Solutions India secured the CSU Jaipur project (400 kW) at Rs 3.04 per kWh — notably competitive for a mid-size installation. Cleanco Renewables won two projects: IIITDM Kancheepuram (375 kW) at Rs 3.10 per kWh and CSU Sringeri (50 kW) at Rs 3.50 per kWh. AGF Energy Infra won the IIIT Bhagalpur project (100 kW) at Rs 3.72 per kWh.

Implications for C&I Solar Buyers

The SECI RESCO Tranche IX results carry important implications for commercial and industrial (C&I) solar buyers evaluating rooftop solar procurement options.

Tariff Benchmarking

The tariff range of Rs 2.94 to Rs 3.75 per kWh established in this auction serves as a market reference point for RESCO model pricing. While C&I projects differ from institutional tenders in several ways — including credit profile, consumption patterns, and rooftop characteristics — the SECI auction results provide a transparent, competitively discovered price band that C&I buyers can use to benchmark proposals from developers.

For larger C&I consumers with substantial rooftop space, the Visva Bharati tariff of Rs 2.94 per kWh at 2,000 kW suggests that well-structured RESCO arrangements for sizable installations can achieve highly competitive rates. For smaller installations, the range of Rs 3.14 to Rs 3.75 per kWh provides a realistic expectation band.

RESCO vs. CAPEX Model Considerations

The RESCO model's zero-upfront-cost structure is one of its primary attractions for institutions and businesses alike. However, C&I buyers should weigh the RESCO model against the CAPEX (capital expenditure) model, where the consumer purchases and owns the solar system outright. Our guide on solar panel ROI and payback periods in India covers the financial analysis framework for comparing these approaches.

To summarize the trade-off: the RESCO model transfers investment risk and O&M responsibility to the developer but locks the buyer into a 25-year tariff, while the CAPEX model requires upfront investment but delivers lower long-term electricity costs after payback. The right choice depends on the buyer's capital availability, risk appetite, and long-term energy strategy.

Relevance to Open Access and Group Captive Structures

While RESCO rooftop solar is a behind-the-meter solution (power is consumed on-site), the tariff benchmarks from this auction are also relevant to C&I buyers exploring open access solar and group captive solar structures. These front-of-the-meter procurement models involve different cost structures — including wheeling charges, transmission charges, and losses — but the underlying solar generation economics discovered through competitive bidding remain informative.

For buyers comparing solar open access across states, the SECI auction tariffs provide a baseline for understanding the generation cost component before state-specific charges and regulations are layered on.

SECI's Role in India's Rooftop Solar Ecosystem

The Solar Energy Corporation of India (SECI) plays a central role in aggregating demand and running competitive procurement processes for rooftop solar across central government institutions. By bundling multiple institutional sites into a single tender — as in Tranche IX's 14 projects across diverse locations — SECI creates sufficient scale to attract competitive bidding while standardizing procurement terms and documentation.

This aggregation model benefits both developers and host institutions:

• Developers gain access to a pipeline of pre-vetted projects with standardized contracts, reducing transaction costs and enabling portfolio-scale bidding strategies.
• Institutions benefit from SECI's procurement expertise, competitive tariff discovery, and project management oversight without needing to run their own bidding processes.

The Tranche IX results, with 22 bidders and an average of 9 to 12 bidders per site, validate the effectiveness of this aggregation approach in generating competitive outcomes for institutional rooftop solar.

Broader Market Context

The SECI RESCO Tranche IX auction takes place against the backdrop of India's ongoing push to expand rooftop solar capacity. While utility-scale solar has historically dominated India's solar installation mix, rooftop solar — particularly through the RESCO model — is gaining traction as institutions, businesses, and government facilities seek to reduce electricity costs and meet sustainability targets without capital investment.

For a comprehensive view of where India's solar sector stands, our India solar industry outlook for 2025-26 covers capacity addition trends, policy developments, and market structure shifts. Additionally, the ALMM mandate for 2026 is reshaping the domestic supply chain for cells and modules, which affects cost structures across all solar segments including rooftop RESCO projects.

For C&I buyers evaluating the full spectrum of solar procurement options — from rooftop RESCO to open access to commercial and industrial solar CAPEX installations — understanding both utility-scale and rooftop auction results provides valuable market intelligence for negotiating favorable terms with developers.

Frequently Asked Questions

What is SECI RESCO Tranche IX?

SECI RESCO Tranche IX is a tender (RfS No. SECI/C&P/IPP/11/0021/25-26) for 4,455 kW (4.455 MW) of grid-connected rooftop solar capacity under the RESCO model. It comprised 14 projects across central universities and government facilities, with winners announced based on tariff-based competitive bidding.

Who won the most projects in SECI RESCO Tranche IX?

Renergo Developers Private Limited (Delhi) won 10 of 14 projects, making it the dominant L1 bidder. The company secured the lowest tariff of Rs 2.94 per kWh for the 2,000 kW project at Visva Bharati University in Birbhum.

What was the tariff range in SECI RESCO Tranche IX?

Winning tariffs ranged from Rs 2.94 per kWh (Visva Bharati University, 2,000 kW, Renergo) to Rs 3.75 per kWh (CSU Agartala, 200 kW, Renergo). The total tariff spread across all 14 packages was Rs 0.81 per kWh.

How does the RESCO model work for rooftop solar?

Under the RESCO model, the developer bears the total investment for design, installation, and 25-year maintenance of the rooftop solar system. The host institution provides rooftop space and purchases the electricity generated at a preset tariff for the 25-year PPA term. The institution pays no upfront capital expenditure.

How many bidders participated in SECI RESCO Tranche IX?

A total of 22 techno-commercial bidders participated in the tender, with an average of 9 to 12 bidders competing per site. The tender was floated on April 10, 2026.

What is the scope of work for developers under this tender?

The scope includes design, engineering, supply, civil works, NOCs from DISCOMs, net metering, grid connectivity per SERC and CEA regulations, and operations and maintenance for the full 25-year PPA term, including equipment replacement and insurance.

How do SECI RESCO tariffs compare to C&I solar pricing?

The Rs 2.94 to Rs 3.75 per kWh tariff range from this auction serves as a reference point for C&I RESCO model pricing. While C&I projects differ in credit profile and consumption patterns, these competitively discovered tariffs provide a transparent benchmark for evaluating developer proposals. Buyers should also consider solar PPA agreement terms when comparing offers.

Can C&I buyers access RESCO rooftop solar similar to these SECI projects?

Yes, the RESCO model is available to C&I consumers, not just government institutions. Many developers offer RESCO structures for commercial and industrial rooftops. C&I buyers can use SECI auction tariffs as a benchmark and should evaluate proposals alongside alternatives like open access solar and CAPEX ownership, weighing factors such as solar panel ROI and payback period to determine the optimal procurement model.

Sources

• SolarQuarter — "SECI RESCO Tranche IX Results: Renergo Wins 10 of 14 Rooftop Solar Projects" (July 24, 2026)
• Mercom India — "SECI Awards 4.455 MW Rooftop Solar Under RESCO Tranche IX" (July 24, 2026)
• Renewable Watch — "SECI Tranche IX RESCO Rooftop Solar Winners Announced" (July 28, 2026)
• Indian Infrastructure — "SECI RESCO Tranche IX: Tariffs Range from Rs 2.94 to Rs 3.75 per kWh" (July 29, 2026)
• Vyqon — "SECI RTSPV Tranche IX RESCO Mode Auction Results" (August 3, 2026)

Regulatory status last checked: July 24, 2026. This article is based on verified facts from the sources listed above. Tariff figures, project assignments, and developer details are as announced in the SECI Tranche IX results. Project execution timelines and final commissioning dates are subject to change as developers progress through design, installation, and grid connectivity stages.

For more on solar procurement models relevant to your business, explore our guides on the RESCO/OPEX solar model, solar EPC companies in India, and group captive solar structures.