In just a few years, ESG, also known as sustainable or responsible investing, has moved from a slightly idealistic niche to front-page, a mainstream dimension for investors, one that strongly influences the performance and resilience of their investments over time. This is particularly the case in infrastructure, in view of its wide reaching and long-term consequences for the community. Indeed, in many cases private investors have been not just accompanying the trend but pioneering evolutions, complementing, or preceding regulatory requirements. A lot of corporates, investors and operators have embarked on communicating their values and sharing their approaches to the subject.