An 11th hour withdrawal from a long-anticipated initial public offering could be a potentially damaging blow for a cleantech startup trying to raise additional capital from the public markets.

But BrightSource, the concentrating solar power startup with 9 GW of projects in the pipeline, has not ruled out another attempt at a public launch.

In April, the industry was hoping that BrightSource would be a bright spot after a challenging year for solar. Misery in the solar industry in 2011 peaked with the collapse of thin film manufacturer Solyndra, which also withdrew its filing a year before it went bust dramatically. ...