80lm/W makes it more efficient than the 10W Solarc HIDs. I wonder how big the package is, ie, how many Watts to run it. I would love to run an efficient, solid-state light that is as bright as my LC100. That way I can finally stop worrying so much about the bumps and the crashes and the exhausted cells all contriving to either blow up the expensive bulb or rob it of its nominal life time.