For years, politicians in Madrid and Brussels have obsessively tracked government debt, adjusting budgets and enforcing fiscal rules. But according to heterodox economist Prof. Steve Keen—the man who famously predicted the 2008 financial crash—they are monitoring the wrong threat.
The real crises threatening Spain are a suffocating combination of private debt and ecological overshoot. Yet, as we look across the Iberian Peninsula in 2026, this crisis is splitting the country in two. The realities facing the parched, financialised southern coast stand in stark contrast to the rugged inland mountains and green valleys of Asturias in the north.
Here is why Keen’s economic warnings matter for the future of sustainable living, and how the crisis is reshaping both extremes of the Spanish landscape.
The Housing Squeeze: Speculation vs. Depopulation
Mainstream economic theory treats private debt (what households and businesses owe) as a harmless transfer of funds. Keen calls this “absolute garbage.” When banks issue loans, they create new money. When private debt skyrockets, it artificially inflates asset prices—especially property. Today, we are living in the fallout of past debt bubbles, an era Keen defines as “Credit Stagnation.”
This stagnation manifests in completely opposite ways depending on whether you are looking at the Mediterranean and Atlantic south, or the Cantabrian north.
The Southern Coast (Andalusia): In coastal areas across the south, the housing market is fractured and exclusionary. Everyday workers and young families are financially tapped out, unable to take on the massive debt required to buy homes at today’s inflated prices. Because local credit is stagnant, housing is increasingly bought outright by wealthy foreign investors and investment funds. Homes are treated as speculative assets and short-term rentals, entirely decoupling property prices from local wages.
Asturias and the Inland Mountains: Travel north to the inland mountain regions of Asturias—the deep valleys of Somiedo or the rugged foothills of the Picos de Europa—and the crisis looks different. Here, the issue has historically been depopulation and a lack of economic opportunity. However, a dangerous shift is underway in 2026. As the south becomes unbearably hot, these northern mountain regions are being eyed as “climate refuges.” Speculative capital is beginning to flow northward. Without protective policies, the rural Asturian interior risks being hollowed out by the same debt-driven, absentee-ownership model that has fractured the southern coast, replacing vibrant mountain villages with seasonal eco-resorts.
To fix this systemic inequality, Keen proposes a Modern Debt Jubilee—a targeted cancellation of private debt by the state. This financial reset would strip power from speculative “Ponzi capitalists.” In the south, it would allow housing to return to its primary function of providing shelter. In the north, it would free young people from debt, allowing them to remain in or return to inland mountain communities to build sustainable, local economies.
The Bureaucratic Blockade: Political Promises vs. Local Red Tape
While financialisation plagues the coasts, rural Spain faces death by bureaucracy. In Madrid, the Sánchez government and the Ministry for the Demographic Challenge make grand announcements and pass initiatives to save España Vaciada (Emptied Spain). Regional leaders, like Asturias President Adrián Barbón, frequently warn of a “demographic winter,” launching campaigns, offering tax breaks, and promoting digital nomad visas to lure people back to the countryside.
Yet, there is a fatal disconnect between this high-level political rhetoric and the reality on the ground.
Scattered across the Asturian mountains are thousands of historic, abandoned stone buildings and farmhouses. There is a genuine, growing desire among people to escape the coastal squeeze, buy these properties, and breathe life into dying villages. But when they try, they hit a massive administrative wall: local municipal planning offices (ayuntamientos).
Despite the national push to repopulate, local planning offices either cannot or will not legalise the restoration of these historic structures. Bogged down by outdated urban planning laws (ley de urbanismo) and a chronic fear of legal liability, local officials often refuse to reclassify ruined agricultural structures as residential. They impose rigid, modern zoning requirements on centuries-old buildings, denying the permits required to turn ruins into legal, habitable homes.
As a result, enthusiastic families are turned away, the politicians’ promises ring entirely hollow, and the historic homes are left to collapse into the earth. In Keen’s terms, this is a glaring systemic failure. We are trapped in a rigid administrative framework that forces people into the debt-fuelled, new-build housing market rather than allowing for the sustainable, low-debt restoration of existing rural communities.
The Water Deficit, the Eucalyptus Threat, and the “War Economy”
While Keen’s financial modelling is groundbreaking, his most urgent warnings now centre on ecology. He argues that perpetual economic growth (GDP) is inextricably linked to energy consumption and resource extraction. The biosphere is breaking under the sheer volume of human demand. In Spain, this extraction takes different forms, but it is driven by the same flawed economic pursuit of short-term profit.
The Southern Desertification: In the south, the depletion of aquifers is an existential threat. We are pumping groundwater for intensive agriculture and mass tourism faster than the scarce rain can replenish it. It is an ecological accounting trick that ends in bankruptcy. Desalination requires immense amounts of energy, making it an unsustainable band-aid for an over-tapped ecosystem.
The Northern Illusion & The Eucalyptus Plague: Asturias, with its lush microclimates and mountain rivers, seems immune to drought. But the northern valleys are facing an ecological crisis driven directly by the toxic economic models Keen warns against: the aggressive expansion of eucalyptus (eucaliptos) plantations.
Planted en masse for the paper pulp industry, eucalyptus is the ultimate symbol of sacrificing the biosphere for short-term GDP. These fast-growing alien monocultures are essentially “green deserts.” They act as massive water pumps, draining the soil and lowering the water table. Even worse, their oil-rich leaves make them highly flammable.
By replacing native, fire-resilient, and water-retaining broadleaf forests (like oak, chestnut, and beech) with highly combustible eucalyptus, the north is artificially engineering its own climate catastrophe, resulting in the devastating mega-fires we’ve seen sweep across the Cantabrian coast in recent years.
To survive this geographic bottleneck, Keen argues society must shift to a “War Economy” footing. Just as nations abandoned standard cost-benefit analyses during World War II, we must abandon the myth of infinite GDP growth and ecological extraction.
For Spain, this means:
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In the South: Implementing strict water rationing, prioritising sustainable local agriculture over water-intensive export crops, and scaling back mass tourism to respect the physical limits of our coastal geography.
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In the North: Proactively protecting the inland mountain regions from overdevelopment and taking aggressive state action to eradicate eucalyptus monocultures. We must replace paper-industry cash crops with the restoration of native forests that retain water, support biodiversity, and resist wildfires.
Real Sustainability Requires Real Economics
Mainstream economics relies on mythical models that assume the market will magically self-correct and that the environment is an endlessly exploitable resource. Keen’s message is a harsh wake-up call.
Whether fighting to keep the south livable and hydrated, navigating the red tape to restore a stone house in a dying village, or fighting to clear the eucalyptus from the Asturian mountains, the battle is the exact same. True sustainability doesn’t just mean planting trees or recycling; it requires fundamentally restructuring our economy to live within our ecological means, breaking the cycle of private debt, and treating the Earth’s physical limits as the absolute bottom line.