New Delhi: The Solar Energy Corporation of India (SECI) has issued a major Balance of System (BoS) tender for the development of a 70 MW ISTS-connected Solar PV project integrated with a 25 MW/50 MWh Battery Energy Storage System (BESS) at Ramagiri in Sri Sathya Sai district of Andhra Pradesh. The project is part of India’s expanding clean energy and storage infrastructure push.
The scope of work includes design, engineering, supply (excluding PV modules), construction, erection, testing, commissioning, and maintenance of the solar-plus-storage facility under Package-1.
Project Location: Ramagiri, Andhra Pradesh
The project will be developed at Ramagiri in Sri Sathya Sai district, a strategically identified renewable energy zone in Andhra Pradesh.
Key access points for bidders include:
- Nearest airport: Bengaluru (approx. 160 km)
- Nearest railway station: Dharmavaram Junction
Site Visit Scheduled for July 3, 2026
To help bidders assess technical and geographical conditions, SECI has scheduled a joint site visit.
Site Visit Details:
- Date: July 03, 2026
- Time: 14:00 IST
- Location: Ramagiri, Andhra Pradesh
Interested bidders must register by emailing their details (name, designation, company, contact information) to [email protected] before July 02, 2026 (11:00 AM IST).
Pre-Bid Meeting on July 6 in Hybrid Mode
SECI will conduct a pre-bid meeting in hybrid format (offline + online via Microsoft Teams) to address technical queries.
Meeting Details:
- Date: July 06, 2026
- Time: 11:00 AM IST
- Venue: SECI Office, New Delhi / Online
Queries can be sent to:
- [email protected]
- [email protected]
- Contact: +91-11-2466270
Tender Search Code: SECI-2026-TN000016 (ISN-ETS portal)
SECI Expands ISTS Solar + Storage Portfolio
Alongside the Ramagiri project, SECI has reported significant progress in its Inter-State Transmission System (ISTS) renewable energy tranches, which combine solar power with battery storage for grid stability and peak-hour supply.
ISTS Tranche-XXI: 1200 MW Solar + BESS Capacity
This tranche includes 1200 MW of total capacity with a 24-month implementation timeline from PPA signing.
Key feature:
- Mandatory supply of 50% power during peak hours (18:00–09:00)
Notable bids include:
- NLC India Renewables: 600 MW @ ₹3.12/kWh
- Engie Energy India: 200 MW @ ₹3.12/kWh
- RPIL Power Three: 300 MW @ ₹3.13/kWh
- Oriana Power: 100 MW @ ₹3.13/kWh
ISTS Tranche-XX: 1500 MW Solar + BESS Projects
This tranche mandates 4-hour peak power supply (18:00–24:00) with a 24-month commissioning target.
Major allocations include:
- Shivalaya Construction: 600 MW @ ₹2.86/kWh
- SAEL Industries: 300 MW @ ₹2.87/kWh
- LC Infra Projects: 50 MW @ ₹2.86/kWh
- Purvah Green Power: 100 MW @ ₹2.86/kWh
- MB Power: 150 MW @ ₹2.86/kWh
- Navayuga Green Energy: 120 MW @ ₹2.87/kWh
These projects highlight increasing competitiveness in India’s renewable energy bidding space.
Growing Focus on Solar + Battery Storage Integration
SECI’s recent tenders underline a clear shift toward hybrid renewable energy systems, where solar generation is combined with Battery Energy Storage Systems (BESS) to ensure stable power supply during peak demand hours.
About SECI
The Solar Energy Corporation of India (SECI) is a public sector enterprise under the Government of India’s Ministry of New and Renewable Energy. It plays a key role in implementing large-scale renewable energy projects, including solar, wind, hybrid, and storage-based power systems, to accelerate India’s transition toward clean and sustainable energy.
