A facility which can process 410,000 tonnes of waste per year has officially been opened in Bulgaria.
The €180 million (£132m) project includes a sanitary landfill, a biological treatment plant and bio-waste and green waste composting plants located on the outskirts of the capital city Sofia.
The plant will produce fuel that can be used in cement kilns and power plants.
The current waste generation in Sofia stands at around 485,000 tonnes per year, according to the city’s municipality.
The European Investment Bank (EIB) provided €33 million (£24m) for the project.
EIB Vice-President László Baranyay said: “This modern facility represents a major step towards improving the environment and the health of the citizens of Sofia and will generate significant efficiency gains for the city’s waste management services. It will also enable Bulgaria to meet its international environmental and climate change obligations.”