The Anllares thermal power plant installations are located in Anllares del Sil, in León
Anllares thermal power plant was located in Anllares del Sil, in the municipality of Páramo del Sil in the province of León, the most important urban centre nearby being Ponferrada, some 40km south of the installation site. The installation is owned by the companies Naturgy Generación, S.L.U. and Endesa Generación in a proportion of two thirds and one third, respectively. A group of companies called “Central Térmica de Anllares – Partnership” was created for its commercial operation, with Naturgy being responsible for its management.
Key figures
Year commercial operations began
Slag and ash landfill basin
Date dismantling started
Estimated end date of the dismantling
Progress of the dismantling
- Availability of electrical evacuation point
- Availability of electrical supply
- Industrial land on part of the plot
- There is no water availability following the dismantling of Anllarinos reservoir
- Plot located in RED Natura
- Location at some distance from industrial areas and with limited communication
In defining the dismantling works, environmental measures and safety procedures have been considered a priority to ensure they are carried out correctly and that third parties and the environment are not affected.
The buildings and installations at the power plants feature different types and combinations of structural elements. Therefore, a combination of manual and mechanical procedures have been incorporated into the dismantling and demolition methodology, in some cases combining the two types of procedures and using explosives to carry out controlled blasting.
What does the process consist of?
- Cleaning the equipment and installations
- Emptying and cleaning the tanks and lines
- Manual work to empty and dismantle the fixtures, sorting them by type
- We carry out specific actions to reduce greenhouse gas emissions and offset our carbon footprint.
- Removing the thermal insulation
- Removing hazardous materials
- Combined demolition
Demolition using machinery:
- By pushing or pulling
- Using hydraulic hammers mounted on mobile equipment.
By controlled blasting to collapse structures and buildings using explosives.
- Sorting demolished materials by type, seeking maximum revaluation and recycling.
- Transferring waste to the different collection areas within the plant.
- Subsequent management according to the type of materials: inert, non-hazardous and hazardous.
- Refurbishing the plot with finishing consistent with an industrial site.
Removal of protrusions and footings above the current level.
- Filling in holes with suitable material.
- Levelling the area.
Dismantling work has been completed and all industrial installations have been disassembled with only the ancillary buildings (offices, workshop, warehouse) and car park remaining. The two out-of-service dykes of the Anllarinos dam have also been demolished.

Following several weeks of preparation, Naturgy successfully carried out the controlled demolition of the cooling tower at Anllares thermal power plant. The operation was carried out with the maximum security measures, minimum environmental impact and rigorous compliance with current regulations. The tower was approximately 111 metres high with a diameter on the ground of 33 metres, the volume of its hyperboloid shape totalling around 745,000 m3 and weighing more than 8,000 tonnes.

Following several weeks of preparation, Naturgy today successfully carried out the controlled demolition of the boiler at Anllares thermal power plant. The operation was carried out with the maximum security measures, the minimum environmental impact and rigorous compliance with current regulations. The boiler was 61 metres high and weighed around 8,200 tonnes.

Following several weeks of preparation, Naturgy today successfully carried out the controlled demolition of the chimney at Anllares thermal power plant. The operation was carried out with the maximum security measures, the minimum environmental impact and rigorous compliance with current regulations.

- Global environmental policy