Active Power Sets First Quarter 2015 Conference Call for April 28 at 8:30 a.m. ET

AUSTIN, TX — (Marketwired) — 04/14/15 — Active Power, Inc. (NASDAQ: ACPW), a global leader in flywheel energy and power technology for mission critical applications, will hold a conference call on Tuesday, April 28, 2015, at 8:30 a.m. ET to discuss results for the first quarter ended March 31, 2015. Financial results will be issued in a news release prior to the call.Active Power First Quarter 2015 Earnings Call and WebcastTuesday, April 28, 2015, at 8:30 a.m. ET (7:30 a.m. CT)Via phone or l