Description 3i Infrastructure has its eyes on the foundations of productive society. The company invests in transportation, utility, and community ventures both in the private and public sectors. It seeks invest opportunities of between E50 million and E200 million in companies, focusing on enterprises in Asia, Europe, and North America. 3i Infrastructure's portfolio includes UK water/wastewater company Anglian Water, petroleum industry storage provider Oystercatcher, and Alpha Schools, which holds a private-finance initiative (PFI) contract to build and manage schools in Scotland.