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Innovative Solution or Desperation? Granma Develops Biomass Furnace to Combat Energy and Food Crises

Sunday, April 5, 2026 by Samantha Mendoza

Innovative Solution or Desperation? Granma Develops Biomass Furnace to Combat Energy and Food Crises
Biomass oven - Image © Cubadebate

In a bid to address the ongoing energy and food crises, workers at the Empresa de Talleres Agropecuarios Granma have engineered a biomass furnace designed for drying rice. This inventive solution utilizes rice husks—the byproduct of rice processing—as fuel, and is being touted by official media as a demonstration of "technological self-reliance" and import substitution.

The project is spearheaded by seasoned metallurgical engineer Carlos García Betancourt, who brings over four decades of experience and a passion for renewable energy sources to the table.

Supporting García Betancourt is a team of machinists, sheet metal workers, and welders who have creatively navigated material shortages by repurposing discarded items such as old fuel tanks and decommissioned liquefied gas cylinders.

The innovative furnace is expected to achieve temperatures around 70 degrees Celsius to effectively remove moisture from rice grains. It will be installed at a drying facility currently under construction in the Bartolomé Masó municipality of Granma.

According to Cubadebate, this equipment will "save 21 liters of diesel fuel per ton processed," a significant conservation measure considering the government's admission of a diesel fuel scarcity.

This initiative emerges amid a severe food crisis, with national rice production barely reaching 80,000 tons, far below the country's needs and prompting reliance on international aid, including a recent emergency donation of 15,000 tons from China.

The biomass furnace is among several makeshift innovations Cubans have devised in response to resource shortages. Other notable inventions include the electric polaquito, a handmade vehicle powered by a 2,000-watt motor, and a 1980 Polish car retrofitted to run on charcoal. These improvised solutions underscore the profound energy and supply crisis plaguing the island.

While these inventions are showcased as evidence of Cuban ingenuity, they also highlight Cuba's inability to procure essential machinery for basic processes like rice drying.

Understanding the Biomass Furnace Initiative in Granma

What is the purpose of the biomass furnace developed in Granma?

The biomass furnace is designed to dry rice using rice husks as fuel, providing an energy-efficient and local solution to reduce reliance on imported fuels.

Who is leading the biomass furnace project?

The project is led by Carlos García Betancourt, a metallurgical engineer with extensive experience in utilizing renewable energy sources.

How does the biomass furnace contribute to energy conservation?

The furnace is expected to save 21 liters of diesel fuel per ton of rice processed, which is crucial given the current diesel shortage in Cuba.

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