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Power Cogeneration

Efficiency and Energy Optimization

Grupo Alterosa entered the energy sector in June 2009 with the commissioning of the Cogeral Thermoelectric Power Plant, implemented in partnership with Cemig (Energy Company of the State of Minas Gerais). Located in the municipality of Pará de Minas — where Siderúrgica Alterosa, the Group’s founding company, also operates — the thermoelectric plant has an installed generation capacity of 6,000 kW/h. Authorized by the Brazilian National Electricity Regulatory Agency (ANEEL), the plant enables the use of blast furnace gas generated during pig iron production (with an average flow rate of 24,000 Nm³/h) to generate electricity through a turbogenerator operating on the Rankine cycle.

Part of this gas is reused in the pig iron production process while the surplus gas is directed to the cogeneration system, where it is combusted in a boiler to produce steam at 44 bar, superheated to 430 °C, which drives the turbogenerator for power generation. The system ensures energy self-sufficiency for Siderúrgica Alterosa’s operations while also providing significant environmental and operational benefits.

Prudential monitoring, focused on the financial leverage of participants in the electric energy market, aims to enhance security and transparency within the Free Energy Market. Normative Resolution No. 1,072/2023, issued by ANEEL, established a monitoring methodology to strengthen the sector’s stability. Power generators, traders, and free and special consumers are required to provide the Electric Energy Trading Chamber (CCEE) with detailed operational and financial data, enabling the assessment of each agent’s risk exposure. This framework helps anticipate potential systemic risks and contributes to the stability and reliability of the Brazilian electricity sector. 

Below is the CCEE Leverage Factor for Siderúrgica Alterosa as a registered market agent:

CCEE Leverage Factor

Alterosa I5 0,000000000000

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