ACEN Corp (<a href="https://edge.pse.com.ph/companyPage/stockData.do?cmpy_id=233" target="_blank">PSE:ACEN</a>), the renewable energy arm of the Philippines' Ayala, will launch a stock rights offering, aiming to raise PHP 30 billion (USD 531.9m/EUR 468.9m) in fresh capital to finance its renewable energy initiatives.