His obituary in the Guardian ( Australia) read: Big changes in society need capable people who make it their mission to improve things.
His impact came not so much from the public limelight, but from a dedication to the best possible analysis, from relentless pursuit of understanding how the energy system works and how it can be improved, and from great generosity in sharing his insights.
His work helped lay foundations for Australia’s transition to a low emissions energy system, one of the defining challenges of this decade and beyond.
Hugh grew up while his father Bruce, an engineer, contributed to the development of the South Australian electricity system.
Hugh also held numerous honorary academic positions, including as Adjunct Professor at the ANU Crawford School.
In 1983 he played an important role in the campaign to save the Franklin River, his report for the Tasmanian Wilderness Society debunking the myths that building hydroelectric dams were the answer.
Hugh will be remembered not only for his public-spirited research, his successful outreach and his influential advice to governments, but for his generosity in sharing knowledge and insight.