I see where you were going with this name when you regged it, I feel it, I think there is a chance that a company might brand with a Solar name like yours, Companies like to avoid exact spellings on their brands for copyright and TM reasons, Such as , instead of using Night, They will use Nite. Lyte instead of Light.
I would hang on to the name, I don't see a reseller wanting to buy it, The name is not Domainer attractive But as for branding, and the Solar Power Energy market just now starting to find it's place in the direct consumer market place, It would not surprise me to see a startup company wanting your name, I can't put a specific dollar value on it though. The name is a wild card IMO, But worth regging with either your own development, Or the chance an enduser company may want to brand it to their company.
Best Of Luck with it
.X.