Hundreds of Southern California Edison customers in Montecito were without power early Tuesday in a series of what the utility called planned “maintenance outages” for equipment upgrades.

According to Edison’s outage map, electricity was cut at 11:30 p.m. Monday for more than 500 customers mostly north of East Valley Road around Hot Springs and San Ysidro roads.

Just before midnight, nearly 400 additional customers were taken offline in two additional outages around Hale Park to the west.

Edison said the outages were expected to last until around 5 a.m., according to the website.