The hospitals and nursing homes are fortunate in that they'd only be affected in a true region wide blackout. BWL and Consumer's Energy agree not to cut power to urgent care centers when they go to rolling brownouts to prevent a system wide crash.
If there was to be a true blackout, like in August of 2003, the hospital's generators immediately kick in.
"They come on almost instantaneously," says Alan Henry, Ingham Regional Medical Center's manager of maintenance and engineering. The 4 generators at the Pennsylvania campus of the hospital can power all critical areas of the hospital. That's true for other buildings as well.
They check the generators monthly. They passed the full-load test just Wednesday morning.