Solar Learning Curve: Swanson's Law Simulator (2D)

Solar module prices don't drop on a schedule — they drop with experience. This simulator drives a real Wright's-Law / Swanson's-Law power law, where cost per watt falls by a fixed percentage every time cumulative worldwide installed capacity doubles, decoupled from the calendar by a separately tunable annual growth rate. A top-down 2D solar farm grid fills in panel-by-panel with log-scaled cumulative capacity while a live log-log cost curve plots the falling price and tracks the current simulated year with a moving marker, so you can see directly why capacity growth — not time — is what makes solar cheap.