A 90% jump in annual electricity costs at an Ohio brickmaker is underscoring how the AI buildout is tightening power supply on the regional grid. The sharp increase shows that the race to build data centers is becoming a manufacturing, affordability, and grid-reliability issue. What happened? At Belden Brick Company in Sugarcreek, Ohio — a business that has operated for 141 years — a monthly electricity capacity charge rose from about $1,600 to …