CHARLESTON, W.Va. -- Officials with Appalachian Power still think 90 percent of their customers will have electricity by Sunday night, turning superstorm Sandy into a bad memory.With weather reports indicating good weather, workers can hope they will be able to reach that goal."Crews will work through the weekend and will not stop until the last customer is restored," said Phil Wright, vice president of distribution operations for Appalachian Power. "As we wrap up in each area, we will shift crews to speed restoration in other places."Mon Power, which supplies electricity to much of the hard-hit northern part of the state, explained on its website that customers still without power might have to wait until later this week for full restoration.At one point, more than 250,000 customers had no power in West Virginia.According to the website of Appalachian Power parent American Electric Power Co., 7,210 Appalachian Power customers remained without electricity Saturday night, including just 775 in Kanawha County. Mon Power officials reported 40,929 customers without electricity.Between the two service providers, 48,139 customers still had no power at 7 p.m. Saturday. Repair crews in Mon Power's service area are making progress in heavily hit areas, although 55 percent of Webster County and 52 percent of Preston County still had no electricity. The number of customers in Randolph, Tucker and Nicholas counties, though, dropped below 50 percent for the first time since the storm hit last Tuesday.