Envestra Limited is a natural gas distribution company engaged in the provision of natural gas haulage services to retailers and industrial customers through the transmission pipelines and distribution networks it owns and manages, and development of the business through expansion of the existing networks. The Company owns about 22,500 kilometers of natural gas distribution networks and 1,120 kilometers of transmission pipelines, serving approximately 1.14 million consumers in South Australia, Victoria, Queensland, New South Wales and the Northern Territory. In August 2014, CK ENVInvestments Pty Ltd raised its interest to 80.53% from 36.06% in the Company. Effective August 20, 2014, an investor group, consisted of Cheung Kong (Holdings) Ltd, Cheung Kong Infrastructure Holdings Ltd, a unit of Hutchison Whampoa Ltd's Hutchison Infrastructure Holdings Ltd subsidiary, and Power Assets Holdings Ltd, raised its interest to 96.59% from 17.46% by acquiring a further 79.13% in the Company.