The International Energy Agency forecasts more than $100 trillion investment in net-zero energy infrastructure by 2050. However, construction costs and delays pose significant challenges, especially with newer technologies like hydrogen and geothermal energy. A study by Boston University's Institute for Global Sustainability reveals that energy projects typically exceed expected costs by 40% and face nearly two years of delays. Nuclear power plants exhibit the highest cost overruns, while newer options like hydrogen infrastructure and carbon capture show significant risks. In contrast, solar energy and wind farms boast better construction track records. Lead author Benjamin Sovacool warns about potential hurdles in advancing a hydrogen economy. By analyzing 662 projects across 83 countries, the study advocates for prioritizing low-carbon sources like wind and solar due to their financial and climatic benefits. The research also highlights diseconomies of scale in large projects, suggesting a shift towards smaller, modular renewable projects for improved risk management and budget predictability.