Green economy surpasses $10 trillion milestone

Companies providing environmental solutions have reached a combined market value of more than $10 trillion worldwide, demonstrating the growing strength and investment potential of the green economy.

“The green economy has surpassed $10 trillion because of fossil energy shocks, policy divergence and market volatility,” said Gernot Wagner, climate economist at Columbia Business School. “Those $10 trillion sitting in green economy market capitalisation are what I would call value investments.”

The latest analysis found that green companies, those generating at least 20% of their revenue from environmental activities such as renewable energy, clean water and energy efficiency, grew their green revenue by 5.3% in 2025 and outperformed the broader market by around 12% over the past decade. If treated as a standalone sector, the green economy would rank as the world’s third-largest industry. Since 2008, it has outpaced global equities by 133%, reflecting sustained investor confidence and highlighting the expanding role of clean technologies in the global economy.