{"id":284749,"date":"2026-08-04T15:49:35","date_gmt":"2026-08-04T13:49:35","guid":{"rendered":"https:\/\/www.heiwit.com\/?p=284749"},"modified":"2026-08-04T17:17:12","modified_gmt":"2026-08-04T15:17:12","slug":"method-for-estimating-photovoltaic-potential-of-public-buildings","status":"publish","type":"post","link":"https:\/\/www.heiwit.com\/en\/metodo-stima-potenziale-fotovoltaico-edifici-pubblici\/","title":{"rendered":"How we estimated the photovoltaic potential of 41,254 public administration structures"},"content":{"rendered":"
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A credible national estimate cannot be born from an average surface area multiplied by the number of properties. The Heiwit model uses a geolocated frame, a stratified sample and solar estimates referred to individual elements. Precisely for this reason, the steps that are not yet replicable must be declared.<\/p>\n

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41.254<\/strong>elements in the OSM frame<\/span><\/div>\n
20<\/strong>layers: 5 areas \u00d7 4 types<\/span><\/div>\n
10.000<\/strong>declared champion<\/span><\/div>\n
9.318<\/strong>record with valid data<\/span><\/div>\n<\/div>\n
Transparency notice.<\/strong> The values 5.68 GW, 7.53 TWh\/year and 6.8 billion euros are results declared by the Heiwit model. The document audit of 4 August 2026 was unable to replicate them in full because detailed datasets, code, API logs, bootstrap outputs, GSE matching and cash flow were missing from the material received. The limitation is stated, not hidden.<\/div>\n
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