Cross-energy management: Consumption in line with production
How industry can contribute to grid stability
The sun doesn’t always shine, and the wind doesn’t always blow. Output from renewables is volatile, so the question is whether energy consumption can be organized so that it matches supply.
Industrial consumers offer the greatest potential. They are the biggest users of energy in Brazil by far. This is where cross-energy management comes in: the idea is for large industrial electricity consumers to match their electricity demand and thus their production workflows to the supply of renewable energies. For this they need to make their processes and organization smarter and more flexible. In this way industry can make an important contribution to grid stability and the success of the transition to renewables.
The cement industry is another major electricity consumer in Brazil. There are several processes in cement production which can easily be interrupted – for example the preparation of raw materials could be staggered. Energy-intensive processes could be scheduled to start when the supply of renewables is plentiful. The latest electricity price could be used as a signal. When energy is freely available, the price drops – and production can start.One helpful factor in cross-energy management is that the supply of renewable energies can be forecast – like the weather – with a sufficient degree of accuracy, providing a good basis for flexible production planning.
thyssenkrupp CSA, one of the world’s largest and most modern steel mills, has a next-generation thermal plant with a 490 MW generation capacity, which ensures self-sufficiency and also enables transferring more than 200 MW to the National Interconnected System (SIN) - enough to power around 880 thousand homes. Electric power is generated by three turbines, one of which is fed with high-pressure steam produced by the coke oven, and the other two with gas produced in the iron ore reduction process in the blast furnaces.