Germany has a lot of solar power. In fact, in 2005, some 55 or 57 percent of worldwide installations were photovoltaics in Germany. That's 57 percent of all worldwide solar photovoltaics. Because of the high feed-in tariff, they have a way of allowing you to produce electricity and ship it into the grid at very high prices.

There's a big difference between needs and requirements for grid-based electricity versus those for distributed rural homes or remote locations, or even rooftop solar, where photovoltaics do OK. The more economical a technology is, the faster we'll see adoption.

Photovoltaics are a great technology for certain applications, and, in fact, we invest in photovoltaic technologies. But they're not good substitutes for grid electricity.

Vinod Khosla Quotes