Discuss the institutional and economic challenges in scaling pumped hydro and battery storage in India to meet resource adequacy targets.

Q. Discuss the institutional and economic challenges in scaling pumped hydro and battery storage in India to meet resource adequacy targets. (15 marks, 250-350 words)

The Central Electricity Authority's Long-Term National Resource Adequacy Plan (2026-27 to 2035-36) envisages 174 GW/888 GWh of storage — 80 GW of battery storage (BESS) and 94 GW of pumped storage (PSP) — against a projected peak demand of about 459 GW [1]. Scaling from today's small base makes storage, not generation, the binding constraint, and the obstacles are as much institutional as economic.

Institutional challenges - Planning–execution split: the CEA plans centrally, but adequacy is operationalised by states and discoms under the Guidelines for Resource Adequacy Planning Framework (June 2023); uneven state-level planning and procurement capacity dilutes national targets [2]. - Clearance and land bottlenecks: pumped storage is site-specific and long-gestation; the CEA's own pumped-storage roadmap makes faster clearances and single-window facilitation a precondition for the 100 GW goal [1]. - Technology-scope gap: current targets assume roughly four-hour battery and six-hour pumped-hydro discharge, with no procurement category for long-duration energy storage (LDES) that can discharge over days during cloudy, low-wind or heatwave spells [3]. - Contracting and market design for storage remain nascent despite the National Framework for Promotion of Energy Storage Systems (2023) [2].

Economic challenges - Capital intensity and payback: pumped hydro needs heavy upfront capital with long gestation, requiring budgetary support and private-sector incentives to be viable [1]. - Duration–cost trade-off: longer discharge improves utilisation economics per unit of capacity, but the absolute cost of storing more energy rises — deterring LDES investment [3]. - Offtaker risk: financially stressed discoms weaken payment security, raising the cost of capital. - Input dependence: reliance on imported cells and critical minerals exposes battery costs to external price shocks.

Storage is thus a governance problem as much as an engineering one. Strengthening state-level adequacy planning, enforcing storage obligations, and creating a distinct procurement window for long-duration technologies would convert the CEA's targets into deliverable capacity — securing both grid reliability and India's non-fossil transition commitments.

(~320 words)

Sources: 1. Long-Term National Resource Adequacy Plan (2026-27 to 2035-36), March 2026 — Central Electricity Authority — 80 GW BESS + 94 GW PSP (174 GW/888 GWh) targets, 459 GW peak demand projection, pumped-storage roadmap and clearance/incentive dependence 2. National Framework for Promoting Energy Storage Systems — Press Information Bureau, Ministry of Power — June 2023 Resource Adequacy Planning Guidelines devolving planning to states/discoms; 2023 storage framework on market integration and regulatory facilitation 3. "India's green transition is missing long-duration energy storage" — The Hindu (news analysis, July 2026) — four-hour/six-hour discharge limits, LDES definition and duration–cost trade-off