3i Infrastructure Limited is a private equity and venture capital firm specializing in investments in early stage assets, mature assets, acquisitions, and projects and privatizations undergoing a period of operational ramp-up. The firm primarily invests in infrastructure companies and assets with a focus on the utilities, transportation and social infrastructure sectors. It primarily invests in unquoted companies, but may also invest in listed companies. The firm seeks to invest across the world, but with an initial focus on Europe, North America, and Asia. It seeks to invest more than £50 million ($79.38 million) for an individual investment. It may invest in junior or mezzanine debt in infrastructure businesses or assets. The firm seeks board representation in its portfolio companies and in cases where it acquires a majority equity interest in a business, that interest may also be a controlling interest. 3i Infrastructure Limited was founded on January 16, 2007 and is based in St. Helier, Channel Islands.