2.1 In Chapter 1, the principles of this National Infrastructure Plan are set out, focusing on maintaining good performance, addressing weaknesses and ensuring value for money. In support of this, the Government has identified priority infrastructure investments based on three main criteria:
• potential contribution to economic growth – investment that enhances productivity and enables innovation;
• nationally significant investment that delivers substantial new, replacement or enhanced quality, sustainability and capacity of infrastructure; and
• projects that attract or unlock significant private investment.