Goa Floats 300 MW Solar with 900 MWh BESS Tender

The Goa Energy Development Agency (GEDA) has issued a detailed Request for Selection (RFS) to develop a 300 MW Solar PV project integrated with a 150 MW / 900 MWh Battery Energy Storage System (BESS) in the state. The tender positions the project as a firm, dispatchable renewable energy solution with a six-hour storage duration.

Bid Submission Deadline: March 6, 2026
Project Model: Build–Own–Operate–Transfer (BOOT)
Grid Interface: State Transmission Utility (STU) network

Project Configuration

The project combines utility-scale solar generation with a co-located or distributed BESS component:

Solar Capacity: 300 MW
BESS Capacity: 150 MW / 900 MWh
Storage Duration: 6 hours
Deployment Flexibility: BESS may be co-located with the solar plant or split and installed across Goa.

The BESS capacity will be proportionate to the allotted solar PV capacity awarded to the Solar Power Developer (SPD).

Scope of Work

The selected developer will be responsible for:

Design, engineering, supply, construction, erection, testing, and commissioning
Operation and maintenance of both solar and BESS systems
Development of associated evacuation infrastructure

The evacuation scope includes:

Construction of transmission lines
Development of new pooling substations
Upgradation of existing grid substations

All infrastructure must integrate with the STU network and comply with state grid codes.

Operational Provisions

To optimise project performance and revenue potential:

The SPD is permitted to procure charging power from the grid during peak solar generation hours.
The developer may sell excess power beyond contracted capacity to third parties or through power exchanges without requiring a No-Objection Certificate (NOC) from GEDA.
However, renewable energy supplied beyond contracted capacity will not count toward monthly contracted energy obligations.
Any annual generation exceeding 19% of the maximum Capacity Utilisation Factor (CUF) will be governed as per the Power Purchase Agreement (PPA).

This structure allows commercial flexibility while preserving contractual performance discipline.

Strategic Significance

The six-hour BESS duration enables the project to shift daytime solar generation into evening peak demand windows, improving dispatchability and grid reliability. The integration of storage under a BOOT model reflects a shift toward hybridised renewable assets capable of delivering firm power rather than intermittent supply.

By allowing grid charging and third-party sale of surplus generation, the tender also introduces a progressive operational framework aimed at enhancing asset utilisation and financial viability.

Developer Considerations

Prospective bidders should evaluate:

Land availability and evacuation design
Storage technology selection aligned with six-hour duration
Grid interconnection strategy
CUF management under PPA constraints
Revenue optimisation through power exchange participation

With firm capacity, storage-backed flexibility, and defined evacuation responsibility, this tender represents one of Goa’s most structured solar-plus-storage procurement initiatives to date.

If executed effectively, the project will serve as a benchmark for hybrid renewable deployment in smaller but strategically important state grids.