An insect breeding system (1) for the breeding of insect larvae, comprising a multitude of similar, stackable crates (20, 30, 40), a climate housing (2), and crate stacking equipment (3), wherein the multitude of similar, stackable crates each have a same width (D1), a same length (D2), a same corner structure (4) that comprises complementary lower elements (5) and upper elements (6), configured to allow stacking of the crates on top of each other by allowing the upper elements of a lower crate to interact with lower elements of an upper crate, and a containment area (7) defined by the width, the length, and a height of the crate.
