NextEra Energy’s $67 million acquisition of Dominion Energy in May didn’t just make headlines—it helped propel an entire economic force past a historic milestone: the green economy has now surpassed $10 trillion in market value. This isn’t a distant vision of the future; it’s today’s financial reality, powered by companies that generate at least 20% of their revenue from environmental solutions like renewable energy, clean water, and energy efficiency. According to the London Stock Exchange Group’s latest report, green revenue grew 5.3% last year alone, outpacing the broader market by about 12% over the past decade. If this sector were a standalone industry, it would rank as the world’s third-largest by revenue—behind only the U.S. and China’s entire economies.
This growth isn’t happening in a vacuum. It’s accelerating amid global energy shocks, political shifts, and policy divergence—conditions that, counterintuitively, have strengthened investor confidence. "The green economy has surpassed $10 trillion because of fossil energy shocks, policy divergence and market volatility," said climate economist Gernot Wagner of Columbia Business School. "Because of that we also see greater returns on the investments that make more sense in the current policy environment, energy shock environment, than the fossil investment." The data bears this out: since 2008, the green economy has outperformed global equities by 133%. Companies with more than half their activities rooted in green solutions have consistently outperformed their non-green peers by two to four percentage points—debunking the long-held myth that sustainability comes at the cost of profitability.
Behind the numbers is a wave of consolidation reshaping the sector. Mergers and acquisitions in green industries are surging, signaling strong growth potential and financial confidence. The utilities sector is leading the charge, exemplified by the NextEra-Dominion deal, which promises to create a "green energy behemoth" capable of generating more renewable electricity than any other U.S. utility. Yet the complexity of the transition remains: the same combined company will also lead the nation in gas-fired power generation, a reminder that the path to a low-carbon future is rarely black and white.
Still, the momentum is undeniable. Even as some governments retreat from climate commitments, the U.S. green economy remains the largest in the world by market capitalization. Investors are using green revenue data not just to assess risk, but to identify opportunity. As Lily Dai, LSEG’s green economy and regulatory solutions lead, put it: "We’re trying to capture the investment opportunities and growth opportunities while we are talking about climate transition." With energy security and supply chain resilience now central to national strategies, the green economy isn’t just an environmental imperative—it’s an economic one. And as markets vote with trillions of dollars, the message is clear: the future is already here, and it’s worth $10 trillion.