Study on Grid Connection Infrastructure for First Offshore Wind Farms in India Published

India, in its pursuit of achieving 37 GW of offshore wind capacity by 2030, has taken a significant step forward with the publication of preliminary study on the power evacuation infrastructure for the first offshore wind farms. One of the core areas of focus for the Centre of Excellence is the grid connectivity – critical for integrating this new power source into India’s energy mix.

Comprehensive Power Evacuation Study

This conceptual study explores the power evacuation infrastructure requirements for two proposed offshore wind scenarios—one in Gujarat and the other in Tamil Nadu. These sites have been earmarked for development under India’s Strategy Paper for the Establishment of Offshore Wind Energy Projects.

The study addresses key components necessary for successful power evacuation:

• Offshore Substation: Serving as the collection point for electricity generated by the wind turbines, stepping up voltage for efficient transmission.
• Export Cable: The underwater cable that transports electricity from the offshore substation to the shore.
• Landfall Arrangement: Infrastructure facilitating the transition from marine to terrestrial power systems.
• Onshore Power System Infrastructure: Connecting the offshore-generated power to the national grid through transformers and substations.

Phases of Development

The report is divided into the following sections, required for the timely and efficient realisation of the offshore wind farms:

1. Preliminary Site Investigations: Assessing seabed conditions and conducting environmental impact assessments.
2. Power System Concept Design: Preliminary electrical infrastructure design, including turbine layout and power system topology.
3. Offshore Substation Pre-FEED: Feasibility study and conceptual design of the offshore substation, planning for installation.
4. Offshore Substation Installation: Coordination and methods for substation transport and installation.
5. Export Cable Installation: Route planning and cable laying, with strategies to mitigate environmental impacts.
6. Programme and Timeline: Indicative scheduling from preliminary studies to operational status, with key milestones.

Purpose and Intended Use

The primary objective of this study is to provide a robust framework for decision-making among policymakers, contractors, and developers. By offering insights into resource requirements, costs, and timelines, the study aims to facilitate the strategic planning necessary for the successful deployment of offshore wind projects in India. The early planning emphasised in the by the indicative programme schedule outlined in the report. The study does not explore or consider the various ownership models of power evacuation infrastructure.

This initiative underlines the importance of planning and international collaboration in ensuring the efficient integration of offshore wind energy into the national grid, contributing to India’s sustainable energy future.

Download the report