At 1000kg — a full tonne — this is where the range moves from "medium farm" into commercial territory. It's built for large dairy operations that need to store a substantial fodder reserve without managing dozens of smaller bags, and it's reinforced accordingly since a tonne of packed fodder puts considerably more structural stress on the bag's seams and material than smaller sizes.
This is also the size we most commonly see ordered by farms transitioning from bag silage into thinking about bunker storage — some stay on 1000kg bags because they offer more flexibility (multiple storage points, easier to relocate) than a fixed bunker structure, while others use it as a stepping stone before investing in bunker infrastructure once their operation reaches full commercial scale.