Economist Steve Keen Warns Bitcoin Could Trend to Zero Amid Energy Concerns

Economist Steve Keen, best known for warning of the 2008 global financial crisis well before it hit, has reignited a long-running debate in crypto by arguing that Bitcoin (BTC) will ultimately converge to ‘zero’. His claim is less a short-term price call than a broader critique of what he sees as Bitcoin’s dependence on energy abundance, its friction with climate policy, and its incompatibility with the way modern economies finance growth.

Keen, an Australian post-Keynesian economist who has consistently targeted mainstream assumptions about credit and debt, built his reputation by highlighting the risks of excessive private leverage in the mid-2000s. That track record has helped his latest comments travel beyond the usual investor echo chambers, landing instead as a macro-level warning about how financial systems behave under resource constraints.

At the center of Keen’s argument is the idea that Bitcoin’s proof-of-work security model is structurally ‘energy intensive’ by design. Mining, he contends, is an arms race of computation that becomes increasingly difficult to justify as energy becomes more expensive or politically constrained. In an environment where electricity grids face tightening capacity, higher marginal costs, or stricter emissions rules, he argues that a network requiring large and continuous power input could struggle to sustain itself.

He also points to geopolitics as a catalyst that could expose Bitcoin’s sensitivity to energy shocks. Under scenarios such as supply disruptions, heightened Middle East tensions, or a broader commodity squeeze, Keen suggests governments and markets would prioritize energy allocation toward essential industry and household consumption—pushing discretionary uses like mining down the list. In that framing, Bitcoin’s security budget is not merely a market variable but something that competes with real-world energy needs.

A separate layer of his criticism focuses on monetary design. Because Bitcoin’s supply is capped, Keen argues it carries a built-in deflationary bias that can encourage hoarding over spending and investment. In traditional macroeconomic terms, a currency expected to appreciate can discourage consumption, complicate debt dynamics, and create pressure on borrowers whose liabilities remain fixed while the purchasing power of the unit rises.

Finally, Keen challenges Bitcoin’s status as ‘money’ by emphasizing the absence of state backing or institutional guarantees. Without an issuer responsible for stabilization, lender-of-last-resort functions, or legally enforced redemption, he argues Bitcoin lacks the foundations that historically underpin widely accepted currency regimes—leaving it reliant on market belief rather than an enforceable monetary architecture.

While his conclusion is controversial, parts of Keen’s critique resonate with certain researchers in energy and climate policy circles. Critics of proof-of-work have long argued that the social utility of Bitcoin’s settlement layer is difficult to square with its electricity use, particularly as governments pursue more aggressive decarbonization pathways. Some economists also share the concern that deflationary monetary systems can suppress investment and amplify the burden of debt, creating tensions with credit-based growth models that dominate modern economies.

Bitcoin advocates, however, reject the premise that mining represents waste. In their view, energy consumption is the explicit cost of ‘security’—the mechanism that makes the ledger prohibitively expensive to attack or rewrite. They also argue that mining is highly responsive to price signals: as electricity costs rise or BTC prices fall, inefficient miners shut down, reducing consumption and difficulty over time.

Supporters further claim that mining can absorb stranded or underutilized energy, citing examples such as flared gas mitigation, remote hydro, and other sources that might otherwise be curtailed. On the question of legitimacy as money, they counter that Bitcoin’s lack of dependence on any single institution is precisely the point: trust is anchored in open-source code, distributed consensus, and censorship resistance rather than central-bank credibility. In this framework, payments can be handled on secondary layers while Bitcoin remains positioned primarily as a ‘store of value’.

The clash ultimately comes down to what Bitcoin is supposed to be. One camp views it as an energy-heavy speculative asset whose long-run viability weakens under climate limits and resource competition. The other sees it as ‘digital gold’—scarce, borderless, and resilient precisely because it is not tied to state policy. Keen’s warning, amplified by his 2008-era credibility, collides with a market reality in which Bitcoin has matured into a globally traded asset integrated into institutional portfolios and macro narratives.

Beyond any single forecast, the dispute underscores a larger question: what conditions will define the next era of money and settlement? As energy constraints and climate policy increasingly shape industrial priorities, Bitcoin’s sustainability—economic, political, and environmental—will remain contested. Whether BTC trends toward ‘zero’ or proves durable through future shocks is uncertain, but the debate itself is becoming a stress test for how markets value security, scarcity, and legitimacy in an energy-constrained world.