Residents of high-rise apartment complexes in Havana and Santiago de Cuba report systemic water and mobility failures as of May 2026, following continued instability in the National Electric System. Persistent blackouts have disabled electric water pumps and elevators, leaving thousands of residents stranded in upper-floor units without basic utilities.
The failure of Cuba’s National Electric System (SEN) has transitioned from a series of emergency events into a permanent state of precariousness. For residents of the island’s vertical housing—primarily Soviet-era apartment blocks—the energy crisis is not merely a matter of darkness, but a total loss of basic habitation standards. The interdependence of electricity, water distribution, and vertical mobility has created a scenario where a grid failure effectively traps residents in their homes.
Systemic collapse of the National Electric System
The instability currently affecting the island stems from a decade of underinvestment in the thermoelectric plants that form the backbone of the SEN. The Antonio Guiteras plant, one of the island’s primary power sources, has suffered from chronic maintenance failures and a lack of spare parts, leading to frequent unplanned shutdowns. These failures are exacerbated by a volatile supply of fuel, historically dependent on shipments from Venezuela that have become increasingly inconsistent.
When a primary plant fails or fuel levels drop below critical thresholds, the grid often suffers a total collapse. This requires a “black start” process—a slow, staggered restoration of power that can take days. During these intervals, the government implements scheduled blackouts, known as apagones
, which can last from 12 to 18 hours daily in some provinces. While rural areas face the loss of refrigeration and lighting, the urban high-rise population faces a more acute physical crisis.
The collapse of the grid is no longer an accident; it is the expected outcome of a system where the infrastructure has been pushed beyond its physical limits without a viable replacement strategy.
Luis Pérez, energy analyst and infrastructure consultant
Vertical isolation and the water pump crisis
In Havana’s densely populated neighborhoods, the architecture of the 1970s and 1980s relies on electric pumps to move water from ground-level cisterns to roof-top tanks. When the power fails, these pumps stop. For residents on the first or second floors, water may continue to trickle through gravity. For those on the fifth floor and above, the water supply vanishes almost instantly.
This creates a cycle of uncertainty. Residents cannot predict when the next blackout will occur or how long the water in the roof tanks will last. The result is a constant state of hoarding, with families filling every available bucket and bottle. When the tanks run dry, those in high-rises must either carry heavy containers up multiple flights of stairs or go without water for hygiene and drinking for several days.
Mobility is the second critical failure point. The elevators in these complexes are often old and prone to mechanical failure, but they are entirely dependent on the grid. During prolonged blackouts, residents—including the elderly and those with limited mobility—are effectively imprisoned in their apartments. This isolation is not temporary; it is a recurring feature of the current energy regime.
Institutional failures of the Ministry of Energy and Mines
The Ministry of Energy and Mines (MINEM) has repeatedly attributed these failures to external pressures, specifically the United States embargo. However, internal reports and analyst data point to a deeper failure in management and the inability to integrate decentralized renewable energy sources into the aging grid. While the government has announced plans to increase solar capacity, the implementation has been slow and hampered by a lack of financing.
Official communications typically follow a pattern: a total grid collapse occurs, followed by a statement citing technical failures
or fuel shortages
, and a promise of a long-term solution that fails to materialize. The lack of transparency regarding the actual state of the thermoelectric plants prevents residents from planning their lives. The uncertainty is a psychological burden, as citizens cannot know if they will have water or a working elevator when they need to leave for work or medical appointments.
The government’s strategy of emergency repairs
—patching old machinery with makeshift parts—has reached a point of diminishing returns. Each repair provides only a temporary reprieve before another component fails, often triggering a cascade that takes down multiple sectors of the grid.
Economic and social implications of the energy gap
The energy crisis has forced a shift in the urban economy. Small businesses operating out of high-rise apartments, such as tailor shops or digital services, have seen their productivity plummet. The reliance on private generators is limited, as fuel for such machines is expensive and often unavailable on the legal market.
Social tensions are rising in the apartment blocks. The struggle for water and the frustration of being trapped in upper floors have led to increased friction between neighbors and local community councils. The disparity is stark: those with the means to buy private water trucks or install small-scale solar panels survive the blackouts with minimal disruption, while the majority of the population remains dependent on a failing state system.
What remains uncertain is the timeline for a genuine structural overhaul. Without a massive injection of capital for new power plants or a radical shift toward a decentralized grid, the residents of Cuba’s high-rises will continue to live in a state of vertical isolation, where the simple act of accessing water or leaving their home depends on the stability of a crumbling electrical wire.
