Abstract
This presentation shows the implications of adopting an integrated systems approach for power technology transitions in Brazil, focusing on climate, land, energy, and water systems. Through modelling exercises utilising the CLEWs framework and OSeMOSYS tool, three scenarios - Baseline, Balance, and Renew - were developed to assess their impact on emissions, land and water demand. Findings reveal that while the Renew scenario, driven by renewable energy sources, achieves the lowest emissions rates and water demand, it also exhibits the highest land use associated with biofuel production. The study emphasises the importance of considering water and land demand as costs comparable to CO2 emissions in assessing the cost perspective of power technology transitions. Recommendations include integrating water and land management policies into energy planning, prioritising investments in renewable energy sources with lower water and land footprints and exploring the potential of different technologies to meet energy and climate demands while minimising carbon emissions and environmental impacts.