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December 2022 – About 3 billion people rely on open, wood-fuelled fires for cooking. This exposes especially women and children to indoor air pollution, which causes 4 million premature deaths each year (WHO).
In addition, harvested wood contributes to deforestation and forest degradation.

Replacing traditional cooking methods with efficient stoves transforms the health and well-being of communities, reduces pressure on nearby forests and creates sustainable local industries. Although cleaner and more efficient cooking technologies have been developed, they are often out of reach of households in developing countries due to cost or lack of availability in their local market.

By manufacturing and distributing new stoves, we contribute to climate change mitigation by substantially reducing combustion and related emissions with consequent benefits to household finances and health.

Maputo, Mozambico

Maputo, the capital of Mozambique, today has a population of over 1 million inhabitants, 800,000 of whom live in extreme poverty, lacking essential infrastructural and social services. In urban and peri-urban areas, 74% of the population uses traditional, low energy efficiency cooking systems fuelled by charcoal.

Since 2018, Carbonsink has decided to strengthen its presence within the country, in Mozambique since 2013, by establishing a local company – Carbonsink Moçambique LDA – to strengthen relationships and partnerships, and demonstrate to Mozambican institutions its willingness to concretely invest in the country.

The creation of the local company was a necessary step to operate in a structured manner in the country, and to carry out the more than 10 projects in which Carbonsink is involved in the different provinces of the country, thus becoming a central player in the development of mitigation projects through the main climate finance mechanisms.

Produzione stufe Mbaula A

The production of the Mbaula A stove takes place through various processes and consists mainly of two parts: metal and ceramic. The raw material (aluminium) is imported while the clay is sourced from the Manhiça and Boane districts in Maputo province.

Production process steps

  1. Raw material preparation
    In this stage, preparation and cleaning is done by sifting/mowing the clay to remove stones, tree roots, branches and other debris. After being sieved, the clay undergoes a process in which the clods are crushed and then taken to a small tank where they are left to soak for a week. At this stage, the slabs and moulds are also prepared.
  2. Modelling
    After being moistened with water, the clay is taken, trodden and kneaded, thus forming a kind of clay powder. After a very short resting period, it is placed on the lathe, where it is worked into clay plates. At this stage, the plates are also worked on the machines and in special moulds to produce the base and part of the stove surface. The two parts are then joined together using aluminium nails to form the stove structure.
  3. Drying and firing the clay
    The already produced dishes are taken to dry in an environment without sunlight and with little ventilation. The drying period varies depending on the season. In winter, between 14 and 18 days and in summer, between 7 and 8 days. After this period, the dishes are taken to the oven for about 10 hours.
  4. Assembly and Finishing
    At this stage, cement is mixed with a small amount of construction sand and the metal and ceramic parts are joined with it. After this joining, the handles and the seat of the pot are assembled and the serial numbers are added.
  5. Stock and warehouse management
    Via the Carbonsink application, stoves are entered into the digital warehouse system by the manager/manager. Subsequently, the stoves are assigned to the individual vendor accounts registered in the application system.
  6. Sales
    With the stoves on their respective accounts, the sellers sell to households using the door-to-door system, whereby each customer signs the sales contract and obtains the coordinates of the house. In this process, the sellers leave instructions for the correct use of the stoves in the households.

The company Prometal is one of Carbonsink’s local partners for the production and distribution of efficient stoves in Maputo.

Partner: Osvaldo Machava
Company name: Prometal
Responsible for the warehouse: Bialdo Quengue,
Field assistants: Veronica Manjate and Helena Matsinhe
Field visit organiser: Felismina Paliche

Find out more about our projects