An estimated $16 trillion spent worldwide on climate change initiatives may represent one of the largest financial misallocations in modern history, according to economist Stephen Moore, who argues the enormous investment has produced little measurable impact on global energy use or climate outcomes.
Moore said the scale of spending across governments and international programs over the past several decades has far exceeded what many taxpayers realize, while the results remain difficult to identify.
“We’ve spent about $16 trillion globally on climate change policies,” Moore said, noting that the spending spans subsidies, government programs, research funding, and private-sector initiatives encouraged by public policy. “What did we actually get for that money?”
Moore contends that despite the trillions spent on renewable energy programs and climate initiatives, fossil fuels continue to dominate global energy consumption and remain essential to economic growth.
He said wind and solar energy have expanded but still represent relatively limited portions of the overall energy supply in many regions. From an economic perspective, Moore argues the spending represents a massive opportunity cost.
Economists often analyze spending not just by its intended purpose but by considering what alternative investments might have achieved. Moore suggested that even a fraction of the funds directed toward climate initiatives could have been used to address other global challenges such as disease prevention, infrastructure improvements, or poverty reduction.
“Imagine if we had spent that money on things like curing cancer, eliminating malaria, or bringing clean water to developing countries,” Moore said. “The payoff would have been enormous.”
The debate over climate spending has intensified in recent years as governments around the world expanded green energy subsidies and climate programs, particularly during the Biden administration.
Moore estimates that the U.S. government alone spent roughly $400 billion on climate-related initiatives during President Joe Biden’s four years in office. Critics have pointed to several renewable energy companies that received federal support before later failing financially, raising questions about how effectively some funds were allocated.
Supporters of those programs argue that long-term investments in renewable energy are necessary to transition away from fossil fuels and address climate change, even if early projects encounter setbacks.
Moore believes government subsidies have often distorted the energy market rather than accelerating meaningful technological breakthroughs.
“If these technologies are truly competitive, they shouldn’t need endless taxpayer support,” he said.
The discussion comes as energy policy again takes center stage in Washington, particularly with the rapid expansion of artificial intelligence infrastructure and data centers that require massive electricity supplies.
At a recent White House meeting with technology leaders, officials discussed strategies to ensure that new data centers do not drive up electricity costs for households. The proposal encourages companies developing AI infrastructure to build or finance their own power generation rather than relying entirely on existing electric grids.
Moore called the approach a practical solution that protects consumers while allowing the technology sector to expand.
“These companies use enormous amounts of electricity,” he said. “It makes sense that they should help provide the power they need.”
The surge in electricity demand tied to AI development is forcing policymakers to reconsider the mix of energy sources needed to support future economic growth.
Moore argues that renewable energy alone will not meet the nation’s rapidly increasing energy needs and believes nuclear power, natural gas, and other reliable sources will remain essential.
He has long advocated for greater investment in nuclear power, which produces electricity without greenhouse gas emissions but has faced political opposition in many climate policy circles.
“If we had spent even a fraction of that climate money on building nuclear plants, we’d have far more clean energy today,” Moore said.
At the same time, Moore says the United States has significantly strengthened its energy position over the past decade thanks to the shale revolution and expanded domestic oil and gas production.
New extraction technologies such as hydraulic fracturing have transformed the country into one of the world’s leading energy producers, dramatically reducing dependence on foreign oil compared with previous decades.
Moore recalled the energy shortages of the 1970s, when Americans experienced long gasoline lines and rationing policies tied to global oil supply disruptions.
“At that time, the Middle East essentially had a stranglehold on our energy supply,” he said.
Today, increased domestic production has reduced that vulnerability, providing greater stability even during periods of geopolitical tension that threaten global oil markets.
Energy independence, Moore argues, is one reason the United States has been better positioned to weather recent volatility in oil prices tied to international conflicts.
Looking ahead, Moore believes the focus should shift toward expanding reliable energy supplies while allowing renewable technologies to compete without heavy government subsidies.
“I’m not against solar or wind,” he said. “What I’m against is forcing taxpayers to fund them.”
As the United States balances climate goals, economic growth, and energy security, the debate over how trillions of dollars have been spent—and how future energy policy should be shaped—is likely to remain a central issue in both political and economic discussions.