ALTO — Oncor let clients in Alto know that some households will temporarily lose electric power next Tuesday. According to our news partner KETK, this is part of an ongoing reliability improvement project. The electricity provider will be updating equipment in east Alto next week. Part of this work will require temporary power outages for 30 to 50 customers in east Alto, near Old Spanish Trail. Outages will be begin at approximately 7:30 a.m. and conclude by approximately 5 p.m.