This is the 12486th most frequent Spanish word.
mejorados
Improved.
Here, 'mejorados' is used as a past participle to describe the state of the energy systems after improvements have been made.
Los sistemas de energía han sido mejorados para aumentar la eficiencia.
The energy systems have been improved to increase efficiency.
In this sentence, 'mejorados' is an adjective modifying 'procesos de producción' to indicate that these processes have undergone enhancement.
Los procesos de producción mejorados están optimizando los costos.
The improved production processes are optimizing costs.
Here, 'mejorados' is again used as an adjective to qualify 'métodos', indicating that these methods are better compared to previous ones.