India’s Central Electricity Authority (CEA) has proposed mandatory grid-forming inverters and co-located energy storage for new ground-mounted solar and onshore wind projects.

India’s Central Electricity Authority (CEA) has proposed new technical requirements for renewable energy projects, including mandatory grid-forming inverters and co-located energy storage for new ground-mounted solar and onshore wind projects.

Under the draft rules, renewable energy power plants commissioned after July 1, 2027, would be required to have at least 15% of their inverters equipped with grid-forming controls. All power conversion systems (PCS) used in battery energy storage systems (BESS) would also need to feature grid-forming controls to comply with the requirements of the Central Electricity Authority (Technical Standards for Connectivity to the Grid) Regulations.

The CEA has also proposed that ground-mounted solar and onshore wind projects commissioned after July 1, 2027, be equipped with co-located energy storage systems (ESS) with a minimum duration of two hours and power capacity equivalent to at least 10% of the renewable energy plant’s installed capacity.

Under the proposal, a 100 MW solar plant, for example, would require at least 10 MW of energy storage with a minimum duration of two hours.