About 600 customers of north and west Ann Arbor were briefly without power on Saturday evening due to an unspecified equipment malfunction, according to DTE Energy spokesman Scott Simons. Power was restored to those customers by 11:17 p.m on Saturday.

The DTE Energy power outage map reported continuing outages affecting 100-1000 customers on Ann Arbor's west side and another 100-1000 customers on Ann Arbor's north side as of 11:46 p.m on Saturday; all of those reported were cleared by 12:16 a.m. Sunday.

Line voltages fluctuated in other parts of Ann Arbor on Saturday evening, with repeated flickering lights reported at about 10:30 p.m. in the Lower Burns Park, Allmendinger Park, and Michigan Stadium neighborhoods, according to reports published to Twitter from residents of those areas. Portions of Ypsilanti also saw power fluctuations.

On December 9, 2009, a transformer fire knocked out power on Ann Arbor's west side, affecting 6000 households. On December 17, 2009, an additional 2000 homes in the same area were without power, and there were reports of widespread brownouts. It is not known at this time whether tonight's outages are related to those incidents.

if you have a complaint about electrical service, you can report it to the Michigan Public Service Commission with an online form. To report an outage, contact the DTE Power Outage Line at 800-477-4747, or via their trouble report line.

Edward Vielmetti's lights were flickering on Saturday night, but he figured it was just the furnace kicking in. Did your lights go out or flicker wildly? Comment here, or leave a message at 734-330-2465.