School District 7 Central Hub Transformer Station

District 7 Central Hub Transformer Station (第七学区・中央ハブ変電施設) is a facility which controls the flow of electricity through the power network in Academy City's District 7.

Principles
The station covers a 30 square-meter area with one two-story square building. Equipment resembling drums are lined up across the area with power cables stretching from the ground around them.

Homecoming Arc
The transformer station was where GREMLIN had placed a transmitter underground to guide Radiosonde Castle onto Academy City. The transmitter was located and destroyed through the combined efforts of Kamijou Touma, Accelerator and Hamazura Shiage before Radiosonde Castle could fall onto the city.