The decision to permanently disconnect the diesel turbine of the Tarapacá Thermoelectric Complex This has become a new milestone in the transformation of the Chilean electricity sector. The move aligns perfectly with the strategy of major electricity companies, also evident in Europe and Spain, to gradually reduce their reliance on fossil fuel-based thermal power plants.
With this measure, Enel Generación takes another step in the transition towards a cleaner energy mixThis aligns with the decarbonization goals set by both Chilean authorities and international regulatory trends. The closure of this backup unit has not only a technical impact but also a symbolic one, reflecting the shift in the electricity sector towards renewable technologies and low-emission solutions.
End of operation of a 24 MW diesel turbine
The company has confirmed the final disconnection of the Tarapacá Generating Turbine (TGTAR)A diesel unit with an installed capacity of 24 MW, it was part of the Tarapacá Thermoelectric Complex in northern Chile. This turbine was part of the well-known Tarapacá Power Plant and was connected to the... National Electric System (SEN).
The unit had been launched in 1998This occurred in a context where thermal power plants played a much more significant role in meeting demand. Although their use had decreased considerably in recent years, the turbine remained available to be activated when the system required it on an ad hoc basis.
According to the company, The turbine stopped operating permanently Once compliance with current regulations and environmental permits has been verified, the closure has been coordinated with the electricity sector authorities to avoid imbalances in supply or grid stability.
This withdrawal is part of a broader process, similar to that which is taking place in several European countries, where The major power companies are planning the phased closure of thermal power plants. and its replacement by renewable generation, storage and demand management solutions.
A backup resource for contingency situations
In its final stage of operation, the Tarapacá diesel turbine had above all an operational backup role for the electrical systemIts main mission was to support the National Electric System (SEN) in emergency scenarios, such as large-scale failures or incidents that required the rapid injection of additional energy.
Enel Generación has detailed that the unit was participating in the maneuvers associated with the Service Recovery PlanThe protocol is activated to restore power after significant outages. In these situations, having equipment capable of starting up quickly is crucial to facilitating the recovery of other power plants and stabilizing the grid frequency.
This type of turbine has the advantage of being able to provide energy in critical momentsHowever, this comes at the cost of higher fuel consumption and a greater environmental impact compared to renewable technologies or more efficient power plants. Precisely for this reason, its role has been limited to very specific uses, associated with contingency scenarios.
The Chilean experience has parallels with what is happening in European electrical systems, where many conventional thermal installations have gone from producing continuously to operating as backup or peak generationwith a view to their gradual replacement by more sustainable alternatives.
Reduction in diesel use and thermal emissions
One of the most direct effects of the lockdown is the elimination of an approximate annual consumption of 3.500 cubic meters of diesel in the Enel Generación matrix. This represents a significant volume of fossil fuel that will be excluded from the company's generation mix.
According to the company, this measure represents a tangible step forward in the reduction of emissions associated with thermal generationThis is a particularly sensitive issue on the global climate agenda and in the public policies of both Chile and the European Union. Reducing diesel use helps to cut CO₂ emissions and other pollutants linked to combustion.
For electricity companies with a presence in several markets, such as Enel, these types of actions fit with their commitments to align their operations with decarbonization goals set at the international level. The phase-out of emissions-intensive thermal assets is a key component of their climate roadmaps.
In the European context, similar measures are interpreted as a signal to investors and regulators that companies are preparing their asset portfolios for an environment in which clean energy generation and energy efficiency They have an ever-increasing weight, and in which fossil fuel plants tend to be relegated to very residual uses or to be dismantled.
Dismantling and securing the Tarapacá Complex
The disconnection of the diesel turbine is not an isolated event, but rather part of a comprehensive dismantling process of the Tarapacá Thermoelectric ComplexThe infrastructure is currently in a security implementation phase, following the procedures established in its Environmental Qualification Resolution (RCA).
This security implementation phase involves a set of technical actions aimed at to ensure that facilities that are taken out of service do not pose risks for the environment, neither from an environmental nor an industrial safety perspective. It is part of the standard requirements when a thermal power plant is decommissioned.
The plan includes the progressive dismantling of equipment and structuresas well as the adaptation of the spaces where the power plant previously operated. These types of projects typically include machinery dismantling, waste management, soil treatment if necessary, and analysis of potential new uses for the site.
According to Enel Generación, the dismantling of the complex is part of a broader transformation of its generating fleet, in which traditional thermal power plants are losing prominence to renewable installations and system flexibility solutions, such as storage or smart demand management.
Energy transition and change of model in the electricity sector
The output of the Tarapacá diesel turbine illustrates in a practical way how The energy transition is becoming a reality through concrete decisions. Regarding generation assets. Beyond announcements and long-term objectives, the closure of units like this shows that companies are implementing changes in their mix gradually but steadily.
The Chilean case connects with the ongoing debate in Europe and Spain about the orderly withdrawal of coal, fuel oil and diesel power plantsas well as on the pace at which new renewable capacity must come online to ensure security of supply. The lessons learned in managing these closures can be useful on both sides of the Atlantic.
Enel's strategy, with a presence in both Latin America and several European countries, is based on strengthen the contribution of renewable sources and reduce exposure to fossil fuels. This course of action is consistent with energy policies that advocate for a more diversified system, with a smaller carbon footprint and greater resilience to commodity price shocks.
On the regulatory front, the progress of these initiatives is supported by legal frameworks that encourage investment in clean technologies and, at the same time, establish roadmaps for closing thermal power plants. The Tarapacá example, therefore, fits into a trend also observed in various European markets, where planning for the retirement of fossil assets has become a central issue.
With the disconnection of the Tarapacá diesel turbine, Enel Generación consolidates a new step in the decarbonization process of its generation fleet and in the dismantling of a thermal power plant that for decades supported the electrical grid. The measure reduces diesel consumption, cuts emissions, and advances the transformation of the complex into a safe site, in line with industry trends both in Chile and in major European markets.