SolarWorld's offer to General Motors is no joke. The German-based solar-power company is serious about wanting to purchase GM's Opel division, SolarWorld CEO Frank H. Asbeck said Thursday morning on German radio.

SolarWorld announced on Wednesday that it's in the process of making an offer to General Motors for its Adam Opel (aka Opel) division for about 1 billion euros ($1.3 billion).

The initial announcement sparked a flurry of market, analyst, and media skepticism on Wednesday. Asbeck took to the airwaves to clarify his company's position on Thursday. (A transcript of the interview in German is posted on the radio station's Web site.)

Opel, which is part of GM Europe, includes four German factories and a development center in Russelsheim, Germany. SolarWorld is prepared to offer 250 million euros in cash for them, according to Asbeck, and has bank credit lines worth 750 million euros, if the German government provides a guarantee. But the company would also request additional state funds to compensate Opel's 25,000 German workers at about 40,00 euros per job, an estimated 1 billion euros.

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