Here, we conduct a review of grid-scale energy storage technologies, their technical specifications, current costs and cost projections, supply chain availability, scalability potential, and policy frameworks focused on the Indian market and contextualized in the. Here, we conduct a review of grid-scale energy storage technologies, their technical specifications, current costs and cost projections, supply chain availability, scalability potential, and policy frameworks focused on the Indian market and contextualized in the. India has set an ambitious target to reach 500 GW of installed non-fossil energy capacity by 2030. However, increasing penetrations of renewables - mostly wind and solar - will require the corresponding deployment of flexible resources - such as energy storage and demand response - to support. aintaining its position as the cheapest form – in terms of $/kWh – of grid-scale energy storage. Of all countries here compared, costs are cheapest in India, which already hosts a large instal ed capacity of 4700 MW (the 7th largest in the world) with more projects in the pipeline (CEA 2022). It. Guided by our National Electricity Plan and bold climate pledges, we aim to achieve 500 GW of renewable energy capacity by 2030—a goal that reflects our resolve to lead globally in clean energy. Energy storage is at the core of this vision. It's the key to harnessing the full potential of renewable. ation. Our analysis, based on implied solar and storage costs from these bids and bottom-up global cost estimates. Power sector regulators hold the keys to unlock the trillions of rupees of battery storage investment necessary to ensure the growth of a flexible, affordable, and reliable grid. This mandatory system aims to boost transparency, accountability, and sustainability in the battery ecosystem, facilitating efficient.