The waste generated by IBERDROLA can be divided into two groups: waste originating in the generation process and waste originating in facilities and offices which is not linked directly to the electricity production process and is generated in maintenance, operation, management and other activities.
The waste generated by the Company at the different activities of construction, operation and maintenance of facilities and offices are properly management in according to the type of waste.
The chart below shows the source of the Company's waste production:
The waste generated can be divided into two groups: waste originating in the generation process and waste originating in facilities and offices which is not linked directly to the electricity production process and is generated in maintenance, operation, management and other activities.
Fly ash and slag in the thermal power plant generation process are the most typical types of waste, together with nuclear waste. Approximately 78% of fly ash is reused to produce cement and as filling in infrastructure work in 2014; boiler slag is managed for disposal.
The nuclear waste produced is known as conditioned intermediate- and low-level radioactive waste, i.e., ready for storage at the El Cabril warehouse. The IBERDROLA nuclear power plants are included in the Environmental Radiological Monitoring Programme of the Spanish Nuclear Safety Council, which involves taking samples of air, water, soil, etc. on a regular basis in order to ensure that all the parameters are within the established limitsNote (1).
In connection with the hazardous waste generated in maintenance, operation, management and other activities, the various areas in the Company carry out actions aimed at minimising and improving management of this type of waste under the certified environmental management systems. This waste is delivered periodically to authorised managers for proper treatment.
Finally, as regards non-hazardous waste, the Company draws up minimisation and recycling plans, in addition to conducting awareness campaigns that result in the adoption of best environmental practices by the employees.
In the thermal power plant generation process, fly ash and slag are the most typical types of waste. 650,101 t of fly ash were produced in 2014, 207,130 t in Spain, and 442,971 t in the United Kingdom; of the total, 78% was reused to produce cement as filling in infrastructure work and to produce compost. Also produced were 54,316 t of boiler slag and non-fly ash, of which 68% was reused and the rest was sent to landfills.
The trend of the production and reuse of these ashes (in coal-fired power plants) in Spain and the United Kingdom is shown below:
|YEAR||ASH PRODUCED||ASH REUSED||% REUSED|
During 2014, 79 m3 of radioactive waste were produced in the low-level / low-activity category at the Cofrentes plant in Spain, and 75 m3 were sent to be deposited at the El Cabril temporary storage facility. The rest of the nuclear power plants in which IBERDROLA holds an interest produced 68.8 m3 of low-level / low-activity nuclear waste (a figure corresponding to the attributable percentage), and 2.3 m3 were sent to El Cabril.
The same year, 185 m3 of intermediate- and low-level radioactive waste were produced at the Cofrentes plant, and 233 m3 were sent to be deposited at the El Cabril temporary storage facility. The rest of the nuclear power plants in which IBERDROLA holds an interest produced 81.7 m3 of low-level / low-activity nuclear waste (a figure corresponding to the attributable percentage), and 57.2 m3 were sent to El Cabril.
The fuel assemblies no longer useful for electric energy production are considered high-activity waste and are stored as spent assemblies within the pools of the nuclear reactors. At the Cofrentes plant, no assemblies were replaced, with a resulting total of 3,980 fuel assemblies stored in the pool. At the other plants in which an interest is held, 164 assemblies were replaced, 61 of which are attributable to IBERDROLA. There is a total amount of 3,595 assemblies attributable to the Company.
Within the framework of the environmental management systems, the various businesses of the Group carry out activities designed to minimise and improve the management of the hazardous waste that is produced (PCB-contaminated equipment and oil, lubricants, resins, emulsions, etc.). The waste is periodically delivered to authorised handlers for proper processing. Not all of the waste generated is deposited or recycled immediately given that there are temporary warehouses for hazardous waste at the facilities.
The hazardous wastes are shown below:
|HAZARDOUS WASTE GENERATIONNote (2)||PRODUCED (TOTAL) 2014||PRODUCED 2013|
|UNITED STATES OF AMERICA||699||772|
|REST OF THE WORLD||119||43|
|HAZARDOUS WASTE GENERATIONNote (2)|| DEPOSITED AND/O
| DEPOSITED AND/O
|UNITED STATES OF AMERICA||302||414|
|REST OF THE WORLD||25||6|
|HAZARDOUS WASTE GENERATIONNote (2)||RECOVERED, RECYCLED, REUSED 2014||RECOVERED, RECYCLED, REUSED 2013|
|UNITED STATES OF AMERICA||315||358|
|REST OF THE WORLD||66||18|
|GROUP AND AFFILIATES||14,433||7,768|
Noteworthy is the decommissioning of the Santurce and Escombreras thermal plants as waste generating sources. In Spain Networks Business, waste has increased due to the management of power transformers that have been eliminated to avoid the risk of theft. At ScottishPower Networks, cabling has been removed, and at Rokas Group (Greece) there has been some waste from renovations and scheduled maintenance activities.
Non hazardous waste
The non-hazardous waste produced is quite diverse: electronic equipment, metals, tubing, wood, plastics, paper, etc., and the Company has minimisation, reutilisation, and recycling plans and awareness-raising campaigns to promote the adoption of good environmental practices by its employees.
The tables below show a breakdown of non-hazardous waste generated:
|NON-HAZARDOUS WASTENote (2) (T)||PRODUCED 2014||PRODUCED 2013|
|UNITED STATES OF AMERICA||55,487||70,244|
|REST OF THE WORLD||0||0|
|NON-HAZARDOUS WASTENote||DEPOSITED AND/OR INCINERATED 2014||DEPOSITED AND/OR INCINERATED 2013|
|UNITED STATES OF AMERICA||48,273||62,394|
|REST OF THE WORLD||0||0|
|RECOVERED, RECYCLED, REUSED 2014||RECOVERED, RECYCLED, REUSED 2013|
|UNITED STATES OF AMERICA||6,799||10,187|
|REST OF THE WORLD||526||0|
IBERDROLA does not directly ship, import or export hazardous waste included in the Basel Convention in any of the countries where it operates.