{"schemaVersion":"report-figure-v1","report":{"slug":"wem-solar-value-factor-2019-2025","title":"SWIS Rooftop Solar Was Worth Under an Eighth of the Average Price in 2024","url":"https://solaranalytica.com/wem-solar-value-factor-2019-2025","datePublished":"2026-10-20","lastReviewed":"2026-10-03"},"figure":{"id":"wem-rooftop-value-factor-post-reform-range","title":"SWIS rooftop solar value factor after the reform, range across AEMO's two estimates","unit":"ratio (estimated rooftop output-weighted Reference Trading Price over its time-weighted average)","valueLabel":"Low end of range","valueBLabel":"High end of range","caption":"After the reform. Each line is one period's range across four members: AEMO's 30-minute rooftop estimate and its 5-minute estimate summed to half hours at lags of 0, +5 and +10 minutes, all at the Reference Trading Price. No member and no midpoint is the value factor. Not joined to the figure above. Computed by Solar Analytica from AEMO WEM distributed PV, estimated DPV generation and Reference Trading Price data.","provenance":{"dataSource":"AEMO WEM Distributed PV (30-minute), Estimated DPV Generation (5-minute) and Reference Trading Price","dataType":"Computed index from AEMO's estimates of rooftop output and published prices; a range, not a point","scope":"SWIS rooftop PV, 1 October 2023 08:00 AWST to 31 December 2025, by period"},"series":[{"label":"2023 from 1 Oct","value":0.300112,"valueB":0.359316},{"label":"2024","value":-0.000071,"valueB":0.119595},{"label":"2025","value":0.645698,"valueB":0.669136}]},"csv":"https://solaranalytica.com/reports/wem-solar-value-factor-2019-2025/figures/wem-rooftop-value-factor-post-reform-range/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."}