Thanks for your article on the next big idea. As an engineer in the solar industry, I would like to comment on your article on the "next big thing" in solar. One of the drawbacks listed in the article regarding conventional photovoltaic (PV) modules is that they are "fragile" and require significant "upkeep". I can assure you that this is not the case.

While it is true that photovoltaic modules may appear fragile with their large expanse of glass, their construction is very similar to a car windshield, and they are remarkably robust. PV modules, and their mounting hardware, are carefully designed to achieve at least a 30 year life in all extremes of climate. With no moving parts, current PV technology requires much less maintenance than any other form of energy generation.

While I certainly wish Konarka and other companies working to commercialize new PV technologies all the best, breakthroughs in PV technology of the kind you describe have been "just around the corner" for the last twenty years. Ironically, the biggest barrier to commercialization that these technologies face is that while they work well in the lab, when outdoors the power output fades rapidly as sunlight and heat degrade the materials.

The clean solar technology available today is considerably more cost effective than your article implies, is extremely low maintenance, and has an enviable track record for longevity. There is no reason to dissuade your readers from going solar by spreading inaccurate information about the current state of the technology.

Oh, and by the way - Home Depot started offering solar power systems a few years ago.

Folks:

Plugging a hybrid vehicle into the standard electrical grid system to charge its battery is a false economy. The power plants (and distribution line losses) that provide the electricity for charging the battery are generally LESS efficient than the ulta-low emission engine inside the hybrid vehicle.