 INDIANAPOLIS, Sept. 15, 2021 GLOBE NEWSWIRE -- Infrastructure and Energy Alternatives, Inc. NASDAQ: IEA IEA or the Company, a leading infrastructure construction company with renewable energy and specialty civil expertise, today announced that the Companys leadership team will participate in the D.A. Davidson 20th Annual Diversified Industrials and Services Conference to be held September 22-23, 2021. JP Roehm, Chief Executive Officer, and Peter Moerbeek, Chief Financial Officer, are scheduled to present virtually on Wednesday, September 22, 2021 at 1:15 p.m. Eastern Time and will participate in virtual meetings with investors throughout the day. 