Virginia faces a power demand problem as data centers continue populating the commonwealth. Data centers are warehouse-like buildings that are often the size of a chain department store, but meant to house computers and networking equipment that store and transmit data. Multiple studies estimate that demand will far outstrip supply in coming years, and they point to data centers as a significant factor in the equation. The company, which supplies power to many data centers in Northern Virginia, is developing wind turbines off the Virginia and North Carolina coasts. “I want to be careful not to come across in any way as saying we don’t need data centers.