India’s Renewable Energy Surge: Why Energy Storage is the Key to Achieving 500 GW Renewable Target by 2030

Context

As India targets 500 GW of renewable energy capacity by 2030, energy storage has become crucial for ensuring reliable and stable power supply.

About Energy Storage

• Meaning of Energy Storage: Energy storage refers to technologies and systems that store surplus electricity during periods of excess generation and release it when power demand exceeds supply.
• Enabling Reliable Renewable Energy: Energy storage separates the timing of electricity generation from consumption, allowing renewable energy sources to function more reliably like dispatchable power.
• Importance of Storage Systems: Without energy storage, excess renewable power is wasted through curtailment, grid stability is affected during low-generation periods, and dependence on coal-based baseload power continues.

Types of Energy Storage Technologies

India’s Storage Gap

• Limited Battery Storage Capacity: Despite having nearly 220 GW of installed renewable energy capacity in 2025, India’s Battery Energy Storage System (BESS) capacity remains extremely low at only around 0.27 GW.
• Rising Future Storage Requirement: The Central Electricity Authority estimates that India will require 41 GW/160 GWh of BESS and 124 GW of pumped hydro storage by 2036 for reliable renewable integration.
• Dependence on Chinese Imports: India imports nearly 75-80% of its lithium-ion battery cells from China, creating strategic and economic vulnerabilities in the energy transition.
• Emerging Duck Curve Challenge: Grid operators increasingly face the “duck curve” problem, where excess solar generation during afternoons is followed by sharp electricity demand after sunset.

Associated challenges

• High Cost of BESS: Battery Energy Storage Systems remain expensive, with installation costs of nearly Rs 3-4 crore per MWh and heavy dependence on imported lithium-ion cells.
• Chinese Dominance in Supply Chains: China controls nearly 70% of global lithium-ion battery manufacturing and key mineral processing, while India has limited domestic refining and processing capacity.
• Constraints in Pumped Hydro Projects: Most suitable pumped hydro sites are located in ecologically sensitive regions such as the Himalayas and Western Ghats, leading to environmental and social concerns along with long gestation periods.
• Weak Financial Health of DISCOMs: State DISCOMs continue to face cumulative losses exceeding Rs 6 lakh crore, limiting their ability to invest in storage and grid modernisation.
• Policy and Regulatory Gaps: India lacks a mandatory storage procurement framework, resulting in fragmented BESS deployment and weak long-term investment signals.

Way Forward

• National Battery Storage Policy: India should mandate storage integration with large renewable energy projects and establish a predictable long-term procurement pipeline.
• Expanding ACC Manufacturing: The Production Linked Incentive Scheme for Advanced Chemistry Cells should be accelerated to achieve domestic battery manufacturing capacity of 50 GWh annually by 2030.
• Diversifying Critical Mineral Sources: India must strengthen partnerships with lithium-rich countries such as Australia, Chile, Argentina, and the Democratic Republic of the Congo while expanding the role of Khanij Bidesh India Limited.
• Fast-Tracking Pumped Hydro Projects: A dedicated approval mechanism should accelerate environmental clearances and promote community-linked pumped storage projects in hilly states.
• Reforming DISCOMs: Schemes such as the Revamped Distribution Sector Scheme should be fully implemented to improve DISCOM finances and attract private investment in storage infrastructure.
• Promoting Green Hydrogen Storage: India should expand green hydrogen production using surplus renewable energy to complement battery storage for long-duration energy needs.

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