Cross-national comparisons of utility-scale solar development typically rely on aggregate capacity or project counts, yet these volumetric indicators can mask structural differences in how national solar portfolios are organized internally. Using phase-level data from the February 2026 Global Solar Power Tracker, we develop a size–status framework that characterizes each country through 16 predefined size–status modes, formed by crossing four capacity bins with four retained development statuses. Row-normalizing the resulting country–mode profiles attenuates the volumetric dominance of head countries, placing all countries within a structurally commensurate space for comparison. This framework yields two complementary views: a capacity view that identifies six system-weighted national camps, and a count view that identifies five project-frequency ecologies, with only partial alignment between the two. Rather than collapsing onto a single aggregate continuum, global utility-scale solar development differentiates along distinct structural combinations of operating stock, pre-construction buildup, and announcement-heavy capacity structure. A mode-distinction audit further shows that cross-national differentiation is driven disproportionately by a limited subset of key size–status modes—a finding supported by degree-preserving null comparisons and sensitivity checks under alternative specifications. Rather than re-ranking countries by aggregate solar volume, the principal contribution of this study is to identify their underlying structural profiles, showing that similar megawatt totals can correspond to materially different project-frequency structures and implementation-relevant structural differences that future work can validate against land-use, permitting, grid, and policy data.
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Funding
Carnegie Mellon University
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