The EU is urging its members to sign a joint declaration pledging to revive the bloc's dying solar industry, a document seen by POLITICO shows — the most concrete signal yet on how Brussels plans to address the perilous situation.

The document from the European Commission, the EU's executive in Brussels, comes as European solar firms warn of an imminent collapse in the face of heavily subsidized Chinese competition and an EU supply glut. Last week, one of Europe's largest solar producers, Meyer Burger, said it would halt module production in Germany this month. ...

Yet the EU's initiative, which essentially amounts to asking countries to step in, won't fully placate anxious solar firms. For months, the industry has been urging the Commission to spearhead an emergency buyout of inventories and further relax EU subsidy rules.