Althenia consists of three divisions which encompass all types of environmental projects:

• - Conservation, garden and forestry work
• - Environmental work
• - Road waste removal and cleaning

Conservation, garden and forestry work

• Maintenance and conservation of green areas at La Granja de San Ildefonso, Segovia.
• Maintenance and conservation of the green areas of Málaga.
• Maintenance and conservation of the green areas of Pozuelo de Alarcón, Madrid.
• Maintenance of the gardens of Rincón de la Victoria. Málaga.
• Maintenance and conservation of the gardens of the City of Sevilla.
• Maintenance and conservation service for the Natural Areas of the Province of Ávila.
• Conservation of green areas of the Airport of Málaga.
• Conservation service for the gardens of Cabanillas del Campo, Guadalajara.
• Maintenance of the gardens of Atocha Rail station, Madrid.
• Landscape restoration of La Campana river, La Carolina
• Restoration of burned areas in Cazorla, Jaén.
• Silvicultural treatment of Segura mountain range.
• Forest fire preventive treatments, Cazorla
• Mechanical maintenance of the fire services of the province of Málaga.

Environmental work

• Rehabilitation of the forest parks of Atalaya and limitation of vehicular traffic, Ciudad Real.
• Restoration and reforestation of Cárcava del Chorrito in Salteras, Sevilla.
• Rehabilitation and renovation of the Parque de Los Frailes, Leganés, Madrid.
• Landscaping of the area of Puente de Segovia over the Río Manzanares and sidewalks of Calle Aniceto Marinas. Madrid.
• Closure and rehabilitation of the municipal dumps of Colmenar de Oreja, Carabaña and Valdilecha, Madrid.
• Rehabilitation of the Guadalquivir river at Andújar, Jaén.
• Hydraulic rehabilitation project for the Ranillas stream and rehabilitation of the Parque Tamarguillo, Sevilla.
• Bird recovery center, Sanlúcar la Mayor.
• Tree plantation in Soto de Henares, Torrejón.

Road waste removal and cleaning

• Conservation and maintenance of equipment and infrastructure of the beaches of Málaga.
• Conservation and maintenance of the equipment and infrastructure of the beaches of Cádiz.
• Maintenance services and waste collection in Vélez-Málaga, Málaga.
• Maintenance services and collection of solid urban waste in the Municipality of Chipiona, Cádiz.