{"schemaVersion":"report-figure-v1","report":{"slug":"solar-variable-years","title":"The Variable Years: Why Output Swings, and What P90 Really Means","url":"https://solaranalytica.com/solar-variable-years","datePublished":"2026-04-30","lastReviewed":"2026-04-30"},"figure":{"id":"ghi-variability-by-climate","title":"How wide the swing is. Interannual variability of annual GHI by climate type","unit":"%","caption":"How much one year departs from the long-run mean: interannual coefficient of variation of annual GHI by climate type, from the published solar-resource literature (SolarGIS, Vignola, Meteonorm). Representative bands, not our per-site figures, since the yield baseline is a climatology.","series":[{"label":"Hyper-arid desert","value":2.5},{"label":"Subtropical arid","value":3},{"label":"Mediterranean","value":3.5},{"label":"Continental","value":4.5},{"label":"Maritime","value":5.5},{"label":"Monsoon / tropical","value":8}]},"csv":"https://solaranalytica.com/reports/solar-variable-years/figures/ghi-variability-by-climate/data.csv","publicationState":"fixed-edition","boundary":"The figure remains bound to the report edition. A newer upstream release creates a review obligation and never rewrites these rows automatically."}