Decarbonization Readiness Assessment Mapping Framework

Power systems pursuing decarbonization often face similar operational and planning challenges, even when their conditions differ. The Global Power System Transformation Consortium (G-PST) developed the Decarbonization Readiness Assessment Mapping (DREAM) framework to help power system operators evaluate how prepared their systems are to operate reliably with higher shares of renewable energy over the next decade. The framework provides a structured assessment of system capabilities and supports the planning and sequencing of technical actions aligned with long-term decarbonization targets. DREAM is intended for system operators, regulators, planning authorities, policymakers, researchers, financial institutions, and other stakeholders engaged in power system transformation. DREAM provides a consistent, transparent way to assess current readiness, identify strengths and limitations, prioritize technical improvements, and measure progress over time. The framework is adaptable to different system scales, resource mixes, and interconnection configurations.

Users assess the system across four operational attributes: Transmission Capacity, Power Flexibility, System Security, and Energy Sufficiency. Each attribute is rated as High, Medium, or Low based on current system conditions. A logic-based tool converts these ratings into a readiness score and determines both the system’s current stage (A–C) and the stage aligned with the system’s decarbonization goals. The results highlight system strengths, emerging operational challenges, and priority technical actions to improve reliability and performance as renewable penetration increases.

Systems in the Mover category start with a low share of renewable energy today and plan to reach modest levels of renewable penetration over the next decade. These systems often benefit from targeted transmission upgrades and improved regional coordination, paired with enhanced forecasting practices and more dynamic day-ahead and real-time dispatch. As renewable shares increase, defining clear performance expectations for flexibility and system stability services becomes increasingly important to maintain reliability while enabling continued growth.

Download: Mover (Stage AB) Factsheet

Fast Mover systems also begin with very low renewable penetration but are aiming for a rapid and significant increase. To support this pace of change, these systems typically need to strengthen transmission capability, expand operating flexibility, and adopt fast-ramping resources and real-time operational practices. Many Fast Movers also focus on scaling storage and demand response, improving forecasting accuracy, and enforcing grid codes supported by advanced stability modeling and system monitoring.

Download: Fast Mover (Stage AC) Factsheet

Integrator systems currently operate with a modest share of renewable energy and plan to reach ambitious levels. These systems often prioritize targeted transmission expansion and strong interregional coordination to balance supply variability across a wider footprint. As renewable levels increase, sub-hourly or near-real-time dispatch, improved ramping capabilities, and expanded storage and demand response play a growing role. Clear stability service requirements, verification of ancillary service performance, and continued advancements in forecasting and modeling support reliable system operation throughout the transition.

Download: Integrator (Stage BC) Factsheet

• Overview and Guide: Explains the DREAM framework, scoring method, and interpretation guidance
• Description of Stages: Defines the technical characteristics of each readiness stage

To begin using the DREAM framework, start by completing the assessment form. The form guides users through evaluating their system’s attributes and automatically generates a readiness score and stage. This provides an evidence-based starting point for prioritizing technical actions.