The Seville-based solar energy firm, which employs 24,000 people worldwide, has been seeking to reassure investors that it can generate enough cash to service its near nine-billion dollar debt.
Shares in Abengoa, which have more than halved over the past year, were suspended from trading on the Madrid Stock Exchange.
No trading permitted in #Abengoa shares at the moment: suspended by the regulator— Trading Desk (@ayondoTrading) 25 Novembre 2015
The company says it is seeking creditor protection to ensure its financial viability, after talks with Spanish industrial group Gonvarri fell through over a possible 350 million euro capital increase.
Abengoa has been at the centre of speculation over its survival for several months, and some questions have been raised over its business model and transparency.