IFE Grand Challenge Lecture - recorded on on 23 August 2019 at QUT Gardens Point. Many challenges and opportunities lie ahead as we contemplate a renewable hydrogen energy future. The transition from fossil fuels to renewable energy sources is our highest priority to reduce carbon dioxide emissions, mitigate global climate change and ensure human life is sustainable for the centuries to come. Future possibilities include large-scale solar generation plants, a potentially lucrative hydrogen export industry for Australia and new farming and food production pathways.