Led by Tech for Liberation — a student engineering group at Stanford University — this project converts a trailer into a mobile, solar-powered cold storage unit for the Coalición de Pequeños Agricultores. For small campesin@ producers, cooler rental fees represent a recurring cost that cuts directly into already thin margins — fees paid not to grow food, but simply to keep it from spoiling before it can be sold. This unit eliminates that dependency entirely, giving farmers collectively owned cold storage they control, powered by the sun.

The project brings together students with skills in electrical systems, solar design, and fabrication to solve a problem defined by the farmers themselves — a direct expression of the brigade model in action.