 HOUSTON, April 13, 2021 PRNewswire -- Powell Industries, Inc. NASDAQ: POWL, a leading supplier of custom engineered solutions for the management, control and distribution of electrical energy, today announced that it will release results for the fiscal second quarter ended March 31, 2021 on Tuesday, May 4, 2021 after the market closes. In conjunction with the release, Powell Industries has scheduled a conference call, which will be broadcast live within the Investor Relations section of the Companys website, on Wednesday, May 5, 2021 at 11:00 a.m. 