Porto is 6% circular (2019)

• Input circularity 3% 2%
• Output circularity 12% 9%
• Processed materials 883,247 tonnes/year 1,096,706 tonnes/year
• End of Life (EoL) waste 216,819 tonnes/year 244,132 tonnes/year
• Secondary materials 27,086 tonnes/year 21,387 tonnes/year

Porto has a high urban density with 232,753 inhabitants spreading over 41 km2, it is the second most dense municipality in Portugal in terms of population as well as businesses. Its local economy is mainly based on "wholesale and retail trade" (17%), "accommodation and food service activities" (16%) and "professional, scientific and technical activities" (13%) in terms of number of employees, in 2019.

It was possible to illustrate that Porto is a linear and carbon-rich city, processing yearly around 856 kt of materials, adding 201 kt of additional stock (buildings, infrastructures, and durable goods) and reinjecting 54 kt in their economy. The results also shows that Porto has a high ecological cycling rates potentials (74%) that makes it an opportunity to move forward to achieve circular economy through circular bioeconomy strategies. In addition, the material stock assessment (MSA) illustrates the weight of Porto, whose building stock amounts to 28,000 kt (or around 130 t per capita).