STELLAR Model
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News: The State-of-the-art, Totally indigenously developed Resource Adequacy model (STELLAR) has recently been launched by the Central Electricity Authority (CEA) on 11 April 2025.

STELLAR Model

About STELLAR Model

  • It is a next-gen software tool for integrated planning of power generation, transmission, storage, and demand response.
  • It is developed in line with Resource Adequacy Guidelines issued by the Ministry of Power in June 2023.
  • Launched by: Central Electricity Authority
  • Collaborating Partners: The Lantau Group (TLG) and Asian Development Bank (ADB) under its Technical Assistance Programme
  • This software will be provided free of cost to all State Distribution Companies (Discoms) and Load Despatch Centres (LDCs).

Key Features of STELLAR

  • Chronological Power System Modelling– Simulates real-time grid operations, considering load flow, ramp rates, and unit-level constraints.
  • Integrated Resource Planning– Simultaneously models generation, transmission, storage, and demand-side expansion up to FY 2034–35.
  • Endogenous Demand Response– Includes consumer flexibility in electricity usage to optimize load and system cost.
  • Ancillary Services Optimization– Plans for essential grid services like frequency control and reserves to maintain stability.

Benefits:

  • Ensures optimal resource adequacy – Avoiding both power shortages and overcapacity.
  • Supports zero load shedding and removes the need for stressed capacity.
  • Promotes least-cost planning for efficient and affordable operations.
  • Identifies optimal storage size and location, crucial for renewable energy integration.

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