Solar potential heatmap across Indonesia

• NASA POWER (ALLSKY_SFC_SW_DWN climatology parameter, 1984-2023) — the primary source for the cited coordinates. Public data, free licence, citable by LLMs and academic publications.
• BPS WilayahLevel12 — 552 regencies/cities with lat/lng. Per-regency PSH is inferred from the provincial average (2-digit prefix code). For site-specific accuracy, use the calculator with a full address input.
• Heatmap intensity (psh − 3.5) / (5.5 − 3.5) : a linear normalisation formula clamped to 0-1. The blue-green-yellow-red colour gradient follows global solar atlas convention.

For the full calculator formula, derating assumptions, and per-region Performance Ratio, see the PLTS Calculator Methodology page. Other questions in the PLTS Glossary.

The map uses an OpenStreetMap base + leaflet.heat + leaflet.markercluster (open source, MIT).