The assessment of Smart City performance has progressively evolved from competitive benchmarking-based assessment exercises toward evaluation models grounded in internationally recognized standards of sustainability, resilience, and governance. In Brazil, this evolution is clearly reflected in the methodological transition between the 2024 and 2025 editions of the Connected Smart Cities (CSC) Ranking, the country’s most comprehensive smart city intelligence ecosystem. This study examines this transition as a fundamental shift in the philosophy of urban assessment, moving from a logic of peer-based competitive comparison to one centered on adherence to international quality benchmarks. The objective is to analyze how this normative turn reshapes urban governance frameworks and management practices, with a particular emphasis on energy planning as a strategic dimension of smart and sustainable cities. The 2024 edition of the CSC Ranking was based on a weighted, comparative assessment grounded in the Market Quality Index (Índice de Qualidade Mercadológica, IQM). In this model, urban performance was assessed relative to the observed maximum and minimum values within the group of analyzed cities, comprising 656 municipalities with populations above 50,000 inhabitants. Indicators were assigned differentiated relevance weights ranging from 0.5 to 1.0, enabling the ranking framework to capture structural interdependencies among thematic axes while emphasizing competitiveness and relative positioning. Within this structure, the energy axis did not receive an independent ranking, as it comprised only four indicators mainly related to renewable energy sources and intelligent public lighting, resulting in limited analytical density and reduced applicability to strategic urban management. The 2025 edition introduces a paradigmatic methodological shift by adopting a normative, non-weighted, and universal assessment framework. The new CSC model expands its territorial scope to all 5,575 Brazilian municipalities and is explicitly grounded in ISO 37120 (urban services and quality of life), ISO 37122 (smart cities), ISO 37123 (resilient cities), and ISO 37125 (ESG indicators for cities). Rather than ranking cities based on relative performance, the 2025 framework assesses absolute performance by measuring each municipality's distance from predefined reference values or targets established by international benchmarks, such as those proposed by the United Nations (UN) and the World Health Organization (WHO). Methodologically, this shift entails adopting a simple arithmetic mean to calculate overall and thematic scores, assigning equal weight to all 75 indicators. This design choice aims to improve the transparency, communicability, and accessibility of results for a broad audience, including public managers, policymakers, and civil society. Scores are standardized on a 0–100 scale, with 100 representing full achievement of the reference value. As a result, the CSC 2025 framework primarily serves as a diagnostic and management-orientated assessment tool, focusing on progress toward global standards rather than on relative competition among municipalities.The implications of this transition for urban governance and management are substantial. First, the universal coverage of municipalities transforms the CSC framework into a nationwide monitoring instrument capable of revealing structural disparities across regions and city sizes. Second, alignment with ISO standards and the Sustainable Development Goals (SDGs) enhances international comparability and strengthens the credibility of urban data, potentially increasing cities’ attractiveness for investment and international cooperation. Third, integrating the MySmartCity platform enables continuous monitoring of indicators, supporting interdepartmental coordination and evidence-based decision-making. Finally, the distinction between ranking and certification becomes explicit: while the CSC provides comparative diagnostics, standards-based certification processes focus on verifying data quality and methodological conformity, allowing municipalities to evolve through certification levels without normative judgment of performance. Energy planning emerges as one of the most relevant dimensions affected by this methodological shift. In the 2025 framework, energy becomes a ranked thematic axis supported by ISO-based indicators that capture multiple facets of urban energy systems. These include decentralized energy generation, measured as the proportion of locally produced electricity relative to total consumption; energy efficiency, assessed by final energy consumption per capita; and electromobility infrastructure, evaluated by the availability of electric vehicle charging stations. This expanded treatment positions energy not merely as a technical subsystem but as a strategic component of integrated urban management, closely linked to climate resilience, mobility systems, environmental performance, and governance practices. Despite the move toward a more normative structure, the CSC 2025 model preserves the foundational principle of sectoral interdependence that characterized earlier editions. Urban development is understood as a holistic process in which improvements in one domain, such as energy or sanitation, generate cascading effects across health outcomes, economic productivity, and social well-being. This interconnected perspective is reinforced by consolidating related themes into broader thematic axes, fostering integrated policy analysis and coordinated urban management. Overall, the transition from CSC 2024 to CSC 2025 represents a significant maturation in the assessment of Brazilian cities, redirecting urban governance frameworks and management practices toward systematic alignment with internationally recognized sustainability and quality benchmarks.