More than 10,000 customers were without power Wednesday afternoon in Carmichael, SMUD reported.
Crews did not have an estimated time for restoration as of 3:15 p.m.
It’s unknown what exactly caused the power failure, but there were outages scattered across the region all day.
Another, smaller outage happened earlier in the Tahoe Park area of Sacramento – with about 3,000 customers without power and at least five dark traffic lights.
SMUD’s outage map can be found here.