Sharma (2012) highlights the positives with his case study of Auckland International Airport, where a relational form3 of light-handed regulatory contract was used, and the Government was able to play a central role in bringing about investment and create the conditions for wider economic benefits from this major asset. This process was based on trust between the different agencies as well as addressing the hard financial imperatives. Conventionally, “green investment” would cover both the technologies and the infrastructure itself, and this would include the role of government in facilitating change through providing incentives and a positive regulatory environment.