The OECD forecasts a significant slowdown in growth for developed and major emerging economies, anticipating a nearly halved growth rate by 2060 due to workforce shrinkage and diminishing labor efficiency. This deceleration might necessitate a six-percentage-point increase in taxes by 2060 to maintain current debt levels in OECD nations. Accelerating the shift to cleaner energy, though affecting growth, could yield substantial revenue through effective carbon pricing schemes, potentially mitigating financial pressure on governments and aiding in the global transition to cleaner energy.