Okay, last night I was busily dismantling my elevated switching yard, running a variety of locos around the tracks, and doing general clean-up, when a nearby power box exploded, putting about 12 blocks without electricity. This morning, I continued to disassemble and clean tracks to make room for the 8.8 cubic foot (34 inches high) elevated switchyard I bought in an open air market yesterday. At 11:30. the power came back on.
My elevated switchyard: gone, but not forgotten.