AT least five municipalities in the province of Nueva Ecija will experience a three-hour power interruption on Tuesday next week. This, according to National Grid Corp. of the Philippines (NGCP), will be caused by scheduled maintenance work. NGCP said the power interruption will pave the way for the Nueva Ecija I Electric Cooperative Inc. (NEECO I) to tap its new San Roque Substation. To be affected are the municipalities of San Isidro, Gapan, San Antonio, Jaen and Cabiao in Nueva Ecija. The NGCP said the power interruption will be between 6 a.m. to 9 a.m. on Tuesday.