One of the main concerns for the future is how to use all the necessary energy without harming the environment. Therefore, this essay will show how control and automation engineering can contribute to the world in this matter. Although a large number of people think that this engineering only brings negative consequences such as unemployment of people, replaced by robots, and pollution of industries, it can provide efficient ways to reduce energy consumption and promote the use of renewable energy . Over the years, the need for electricity has increased dramatically with the use of technologies and machines to facilitate daily activities, for work or for entertainment. In the industrial revolution, this process of reducing the workforce for the use of machines began and environmental problems became a reality. One of these is the most used energy resource at the beginning and now: fossil fuel, which is not renewable. Besides the fact that it will disappear, it will bring with it a terrible consequence: pollution. After a few decades, people started to worry about these problems, to solve the problem, electric and nuclear energy were developed. If energy consumption were a constant line, probably these three energy resources (fossil fuel, electricity and nuclear) could be sufficient to provide the population's needs, but this is not true. The projection of energy use shows that it will not stop increasing and hoping not to attack the planet more than it has, the use of renewable energies such as solar, hydroelectric, wind and biomass energy is being stimulated. Despite all the difficulties in thinking about solutions, Control and Automation Engineering provides efficient ways to reduce energy consumption and can incentivize the use of renewable energy. It's... middle of paper......I have to be and save the planet. In summary, Control and Automation Engineering works with high-level technologies to make everything possible. The automated process reduces energy consumption and increases production by controlling the allowed energy bands, measuring and identifying points to change and improve. Not only for industries, but also for the population who in the future will be able to take advantage of all the advantages of technology, sensors and devices that will do the hard work conscientiously. The disadvantage is the price: high-tech devices are usually very expensive, especially immediately after their invention. The option for the population is to resist and when this knowledge spreads all prices will fall. Despite this difficulty, the mess will be sorted because control and automation engineering is realizing its role in the world to save energy for the future.