Brazil’s Ethanol Blend Debate Reveals Systemic Tensions Between Agro-Industrial Profits and Energy Transition Justice

Indigenous and traditional communities in Brazil’s ethanol belt (e.g., Guarani, Kaiowá, and Pataxó) have long resisted sugar-cane expansion, which has led to forced displacements, contamination of water sources, and erosion of food sovereignty. Their agroecological practices, such as the ‘agrofloresta’ systems, offer alternatives to monoculture biofuels but are systematically excluded from policy debates. The current ethanol blend debate ignores their legal rights under ILO Convention 169 and the UN Declaration on the Rights of Indigenous Peoples, which require free, prior, and informed consent for land-use changes.

Brazil’s ethanol industry traces its roots to the 1970s Proálcool program, a state-led initiative to reduce oil dependence, but it was later co-opted by agribusiness elites who prioritized export-oriented sugar production over smallholder participation. The program’s legacy includes cycles of boom and bust tied to global sugar prices, with ethanol blending mandates serving as a tool to stabilize industrial profits rather than address energy justice. Similar patterns emerged in the U.S. corn ethanol industry, where subsidies disproportionately benefited large agribusinesses like Archer Daniels Midland while failing to reduce emissions.

In Thailand, ethanol blending policies have similarly favored industrial cassava and sugarcane producers, leading to land conflicts with rural communities who rely on diverse cropping systems. Indigenous groups in the Philippines, such as the Lumad, have documented how biofuel plantations have encroached on ancestral domains, violating the Indigenous Peoples’ Rights Act of 1997. Meanwhile, in Sub-Saharan Africa, biofuel projects often replicate colonial-era cash-crop models, displacing food crops and exacerbating hunger, as seen in Ethiopia’s Jatropha initiatives.

Life-cycle assessments show that sugarcane ethanol in Brazil reduces greenhouse gas emissions by ~50% compared to gasoline, but this benefit is undermined by indirect land-use change (ILUC) emissions from deforestation in the Cerrado and Amazon. Studies also highlight that ethanol blending mandates can increase tropospheric ozone pollution in urban areas, disproportionately affecting low-income communities. Additionally, the energy return on investment (EROI) for ethanol is lower than for other renewables like solar or wind, raising questions about its long-term viability as a climate solution.

Artists like the Brazilian collective ‘Rede Cerrado’ have used murals and music to critique ethanol expansion, framing it as a form of ‘green colonialism’ that erases traditional knowledge. In the Amazon, indigenous leaders such as Sônia Guajajara have invoked ancestral cosmologies to argue that monoculture plantations violate the ‘living forest’ ethos of their communities. Meanwhile, Brazilian filmmaker Vincent Carelli’s documentaries on the Guarani Kaiowá people depict how ethanol-driven land grabs disrupt spiritual connections to ancestral territories.

Scenario modeling by the International Energy Agency suggests that Brazil could meet 30% of its transport energy needs through advanced biofuels by 2050, but this requires shifting from sugarcane to cellulosic ethanol and integrating smallholder farmers into value chains. Decentralized biogas systems, as piloted in Germany and Denmark, could offer a more equitable alternative to large-scale ethanol plants. However, current policy trajectories risk locking Brazil into a high-carbon energy system if ethanol blending is increased without safeguards for land rights and biodiversity.

Smallholder farmers in Brazil’s ethanol belt, particularly Afro-Brazilian quilombola communities, have been systematically excluded from policy discussions despite bearing the brunt of land concentration and water scarcity. Women-led cooperatives, such as those in Pernambuco producing organic ethanol, are rarely featured in mainstream narratives, despite their role in sustainable agroecology. Additionally, waste-pickers and informal workers in the ethanol supply chain—who face hazardous conditions—are rendered invisible in the profit-driven framing of the industry.