The core problem: falling energy supplies threaten government promises and the reliability of the entire financial system. Promises—loans, pensions, stock valuations—are made against the expectation that goods and services will continue to be produced. Yet in a finite world, adding more promises cannot create more real output. Energy is essential to produce physical goods and services; without ample energy, growth can stall even if money can be printed or debt expanded.
This post aims to unpack the issue in more detail, with charts that illustrate current strains and potential limits to growth. A key reality is that easy availability of essential resources—fossil fuels, uranium, lithium, copper—may fade, forcing a shift from expansion to contraction in economies around the world.
1) Initial debt can stimulate an economy. When resources are plentiful and borrowing costs are low, added debt tends to pull activity forward. It can create demand for homes, cars, and other goods funded by credit. Ordinary individuals face visible credit limits, while governments’ promises can expand beyond immediate visibility until sustainable capacity is tested.
Economists Carmen Reinhart and Kenneth Rogoff highlighted, in a long-run study of debt defaults, that the most successful growth stories are the ones that avoid default. Without robust growth, debt cannot be serviced with interest, and the illusion that growth will continue to cover debts begins to unravel as debt accumulates.
Since the Industrial Revolution, the world has enjoyed an extraordinary growth path. Now, however, the very fuels that powered this expansion—cheap energy—are becoming scarcer or harder to extract. That shift makes sustained growth harder and increases the likelihood of a transition from growth to contraction.
Predicting the exact path of this transition is uncertain. Yet a plausible pattern is that faster-growing economies may resist contraction longer, while slower-growing ones could slip into downturn, facing greater difficulty servicing debt and honoring financial promises. In extreme cases, governments could falter or collapse, echoing past upheavals such as the dissolution of the Soviet Union in 1991.
2) There is a tight link between global energy use and overall economic output. The rate at which energy is consumed tracks closely with GDP growth. The data patterns show a strong correlation between energy consumption growth and economic growth, underscoring energy’s central role in production and services.
3) A troubling trend is the slowing growth of world energy consumption. After 2000, a noticeable rise occurred due to China’s abundant coal resources, but those low-cost reserves are largely exhausted. Other energy sources, including wind and solar, have contributed only modestly to total energy. As a result, the total energy available to the global economy has stalled at times, making sustained expansion harder.
4) Per-capita energy consumption is also declining. Since energy drives the creation of goods and services, a shrinking energy supply per person translates into fewer physical outputs relative to the population. This trend foreshadows challenges like reduced availability of everyday items, higher-quality products becoming scarcer, and rising costs for households. It also heightens tensions over limited minerals—uranium, rare earths, platinum—where extraction becomes increasingly difficult and prices spike briefly but may not rise long enough to spur durable increases in supply.
5) The trajectory of interest rates matters more than commonly realized. Long periods of low rates supported growth, while the rise in rates since 2022 acts like a brake on the economy. The so-called yen carry trade—where investors borrow cheaply in Japan to invest in higher-yield markets—also hinges on favorable rate differentials. As those dynamics unwind, borrowing costs may rise in the United States even if policy rates stay steady, tightening financial conditions further.
6) High debt service is already a concern in the United States. With debt around $38 trillion and rising interest costs, annual interest payments have surpassed $1 trillion. The Congressional Budget Office warns that high interest expenses squeeze room for other needs, complicating efforts to raise taxes or fund essential programs.
7) Which nations are most likely to withstand energy limits? If Reinhart and Rogoff’s framework applies, the strongest performers may be those that recently enjoyed the fastest growth. A snapshot of 2019–2024 shows a mix of economies, with Ireland—the sole advanced economy among the fastest growers—distinguished by pharmaceutical exports and favorable corporate taxation. Other rapidly growing countries tend to be less advanced economies, often with lower wages and greater capacity to extract resources and manufacture for export. China and India have relied heavily on coal; Guyana stands out as a recent oil producer contributing to growth. Conversely, many shrinking economies (and several advanced ones) face energy shortfalls that hamper production and development.
8) What lies ahead? The signs point to a world where resources are not enough to sustain universal high levels of goods and services. Some countries are already experiencing shrinking GDP, and more may follow. Historical patterns show that when economies contract, governments may fall or drastically cut back social programs, pensions, and bank protections. In such a milieu, guarantees like CBDCs could be used to ration scarce goods and services.
Rather than a conventional World War III scenario, a colder, more fragmented global competition seems plausible, with the United States already navigating a form of cold conflict with multiple peers because essential goods and supply chains become scarce. New technologies—artificial intelligence and energy recovery—offer potential relief, but likely not in the near term. In the meantime, communities and families may need to reimagine safety nets outside government programs.
Source: Gail Tverberg, Our Finite World, with related analyses and data visuals.
Would this perspective change your view on national debt, energy policy, or personal financial planning? If you disagree or have alternative interpretations, share thoughts in the comments.
