Battery energy storage project tariffs in India may need a reset as rising material costs challenge the financial viability of past low-cost bids. Developers and lenders warn that aggressive bidding could hinder project execution and long-term sector growth.
India’s rapidly expanding battery energy storage sector is facing a significant financial challenge as rising input costs threaten the viability of numerous projects. With approximately 260 gigawatt-hours of energy storage capacity currently under development, the industry is grappling with the consequences of aggressive bidding strategies that pushed tariffs to record lows over the past two years.
Impact of Global Material Costs on Local Projects
The surge in project costs is primarily driven by global market factors, including increased prices for essential materials such as lithium, copper, and aluminum. Industry reports indicate that the removal of export incentives by China has further compounded these pressures. These volatile input prices have created a difficult environment for developers who committed to projects based on expectations of a consistent decline in battery cell costs. According to the India Energy Storage Alliance, the current cost landscape makes it increasingly difficult for projects awarded at ultra-low tariffs to remain financially sustainable, raising concerns about project completion.
Lenders and Developers Signal Caution
Financial institutions are closely monitoring the situation as the economics of these storage contracts shift. The State Bank of India has flagged concerns regarding the viability of projects that were awarded at record-low tariff rates, such as the 148,000 rupees per megawatt per month level seen in 2025. Some suppliers have reportedly struggled to maintain previous pricing commitments, leading to potential hurdles in the financing and construction phases. Industry players, including firms like Mahindra Susten, have publicly cautioned against the risks of prolonged price wars. They emphasize that realistic tariff structures are essential to maintain investor interest, ensure timely construction, and uphold the long-term health of the energy storage ecosystem.
For investors, the key monitorable will be whether government authorities consider a tariff reset to align contract terms with current market realities. Continued tracking of project commissioning timelines, developer margins, and management commentary on contract renegotiations will be essential. The ability of companies to manage supply chain volatility while balancing debt levels will remain a critical factor in determining the success of these large-scale storage initiatives.