La tua isola: an off-grid solar sizing tool

Field notes

The configurator models an off-grid installation through twelve editable steps, covering array geometry, shading, batteries, inverters, cables, and consumption. Its production estimates are based on PVGIS data attributed to the European Commission rather than a generic yield assumption. The free route handles one array and an annual-average load, while the paid route expands to four independent arrays, three parallel inverters, and load values at two-hour intervals. The site explicitly positions the output as indicative pre-dimensioning, not certified electrical design.