1. a facility where electrical power is transformed from high voltage to lower voltage for distribution
Usage: electrical engineering
2. a subsidiary station or branch office of a larger organization

Examples

• The electrical substation serves the entire neighborhood.
• Power lines connect the main plant to several substations throughout the city.
• The police substation handles minor complaints from local residents.
• Emergency repairs were needed at the substation after the storm.
• The fire department opened a new substation in the growing suburb.
• Voltage is stepped down at the substation before reaching homes.
• The company established a substation to better serve rural customers.