Ancillary services ensure a proper operation of the power grid by keeping the frequency, voltage, and power load remain within certain limits.
PJM Learning Center - Regulation Market
Microgrids – What Are They and How Do They Work? – N-Sci Technologies
Battery Energy Storage System Integration in a Combined Cycle Power Plant for the Purpose of the Angular and Voltage Stability
Frontiers A review of battery energy storage systems for ancillary services in distribution grids: Current status, challenges and future directions
ERCOTS Launches ECRS Ancillary Service
Renewable Grid (Capacity) Firming
What is the Energy Trading Platform?
Stabilizing the grid with ancillary services
Power system without rotating inertia — Is it possible?, by Danny Kusuma, Feb, 2024