Balancing and Reserves
Developing and refining tools and strategies to manage power system variability and uncertainty, while strengthening operators’ ability to maintain frequency stability, manage reserves, and provide inertia services
Research and Development Challenges
EPRI’s Balancing and Reserves research area supports the effective integration of renewables and DER by enhancing how system operators ensure sufficient frequency, reserves, and inertia services. This area focuses on developing methods, tools, and strategies to address operational challenges. EPRI collaborates with project set members to identify emerging reliability challenges, develop new models and tools for integration, and provide guidelines and leading practices to help inform operations, manage operational uncertainty. It also provides members information and insights about the latest practices across the world.
Related Deliverables
Risk-Based Flexibility Reserve Dimensioning from Multiple Probabilistic Sources
3002030176
Proposes a model for sizing flexibility reserves using probabilistic solar forecasts, merging data sources, and applying risk-based approaches to reduce system risk.
Contingency Reserve Parametrization with Frequency Response Monitoring
3002031322
Summarizes how merging DynADCR and FRADT allows for dimensioning contingency reserves based on system risk while monitoring frequency response.
FRADT v. 7.0
3002027559
Assesses frequency response available to operators now and for future dispatches
Uncertainty-Agnostic Parametrization of Flexibility Reserves
3002030843
Presents an uncertainty-agnostic framework for flexibility reserve parametrization that integrates both historical information and probabilistic forecasts through conditional probability modeling.
Bulk System Frequency Performance and Assessment Under High Levels of Variable Generation: Multi-Perspective Regionalized Analysis for Frequency, Voltage, and Grid-Strength
3002033103
Proposes a framework for regional analyses of a power grid from multiple perspectives to facilitate understanding of a system’s regional characteristics and inform decision making in operations and planning.
Pre-SW: Dynamic Assessment and Determination of Operating Reserve Command Prompt (DynADOR CMD) v6.0 Beta
3002033116
This release includes the ability to merge probabilistic information from multiple sources and significant revamps to the reserve determination model, leading to more accurate risk management.
Inertia Estimation and Monitoring - 2025 Updates and Case Studies
3002032888
This version considers Inverter-Based Resource’ (IBR) Fast Frequency Response (FFR) in the inertia estimation and Frequency nadir & RoCoF prediction under hypothetical disturbances
Conditional Updating of Day-Ahead Forecast Distributions for Reliable Intra-Day Operations
3002033051
Presents a framework for updating day-ahead predictive distributions of net-demand forecasts as intraday observations become available
Key projects and Related Efforts
Area Leads
