Like many "advances" in solar energy, nobody is going to care about the efficiency gains if they are overshadowed by cost increases. The article tries to make

Like many "advances" in solar energy, nobody is going to care about the efficiency gains if they are overshadowed by cost increases. The article tries to make it sound like a miracle technology that concentrates light "up to 10,000x", but that doesn't mean you get 10,000x more energy out of it, it just means that you can use a much smaller panel since the light is concentrated on a smaller spot by a comparatively large, bulky piece of hardware. Panels are already pretty cheap, so it's not clear if the cost of a giant glass sphere, plus heavy-duty steel frame, plus tracking hardware will beat just blanketing your roof with stationary panels. It looks cool, sure, and maybe it's a bit more efficient at converting sunlight to electrical energy, but the real figure that's going to matter is the $/kW ratio.