Alterrus Systems Inc. engages in the development, manufacture, operation, and integration of VertiCrop, a high density vertical growing system in Canada, the United Kingdom, and the United States. Its VertiCrop system grows fresh, nutritious, and leafy green vegetables in closely spaced shelves vertically arranged on trays that are moving on an overhead conveyor system. The company was formerly known as Valcent Products Inc. and changed its name to Alterrus Systems Inc. in June 2012. Alterrus Systems Inc. was founded in 1996 and is headquartered in Vancouver, Canada.