May 2 (Reuters) - Atlantic Power Corp AT.N :
* ORATION RELEASES FIRST QUARTER 2019 RESULTS
* Q1 EARNINGS PER SHARE $0.07
* REAFFIRMED FULL YEAR 2019 GUIDANCE
* QTRLY PROJECT REVENUE $73.0 MILLION VERSUS $80.0 MILLION
* Q1 RESULTS WERE ADVERSELY AFFECTED BY POWER PURCHASE AGREEMENT (PPA) EXPIRATIONS AT WILLIAMS LAKE AND THREE SAN DIEGO PROJECTS
* SEES 2019 PROJECT ADJUSTED EBITDA $175 MILLION - $190 MILLION