In response to its extreme vulnerability to climate change, Spain in 2017 became the first EU country to target net zero as a tool for international expansion and attracting investment. Furthermore, its tourism industry, which represents 11.7% of GDP, has announced sustainability objectives it hopes to meet by 2030. How are travel & tourism businesses harnessing green tech to meet these ambitious aims, and can they also help boost the bottom line? What can the rest of southern Europe learn from Spain’s progress so far?