Attero is a waste management company with a very strong circular focus: it collects waste and converts it into usable products. 
There are four main streams:

• Residual waste is used to produce heat, electricity and green gas.
• Plastic and metal packaging waste and drink cartons are sorted into ten different streams and recycled. Plastics are then sold as granulate.
• Bio waste is converted into compost, biosubstrate raw materials, green energy and biomass.
• Mineral waste is landfilled if it cannot be reused: for instance, construction rubble is broken down into granulates.

The resulting secondary raw materials are sold to businesses.

Another aspect to Attero's business model is energy from waste:

• Biogas is collected from anaerobic digestion plants and landfill sites and converted into biomethane which can be injected into the gas grid.
• It also operates energy-from-waste plants. The resulting steam is used by local industry in place of natural gas or in steam turbines to drive generators which produce renewable electricity that is injected into the electricity grid.
• Lastly, it uses closed landfill sites as locations for solar panel farms.