SunFlower Solar PV

Here’s a solar PV device that’s been around for at least the last 8 – 10 years.  It opens in the morning and contracts in the evening, and has double-axis tracking like so much of the world’s PV.  Their claim: 40% more efficiency.

Yes, devices that track the apparent motion of the sun across the sky increase the efficiency of solar PV by 40% over its stationary counterparts. But that doesn’t mean that this idea is a good one; in fact, it’s a joke. Users of the “SmartFlower” will pay many hundred times more per kWh for their electricity than those using rooftop solar. It also eats up useful space.

If that’s acceptable, buy one. Buy many, by all means.