Ecoener shares slide on market debut following trimmed-down IPO Email Grupo Ecoener CEO Luis de Valdivia at the company’s bell ringing ceremony, markings it admission to the Spanish stock exchange. Image: Grupo Ecoener. UPDATE: Shares in Ecoener continued to fall throughout its maiden day of trading in Spain, closing the day at €5, more than 15% down on its opening price of €5.90. Spanish renewables developer and independent power producer (IPP) Grupo Ecoener has seen its shares slide on its market debut today. At the time of publication shares in the group had slid more than 8% to just over €5.50 after listing on the Spanish stock exchanges earlier today. The slide took Ecoener’s share price below the €5.90 per share guide set by the company last week, with the company having previously set a price range of €5.90 – €7.25.