Practical, affordable - and colorful - solar energy will be on the market within three years

The Futurist : Magazine
Most large-scale solar-power operations use rotating mirrors to follow the path of the sun and channel it into solar cells. An MIT team believes they've found a more efficient solution: dyed windows. The dye particles focus the light to the edges of the windows where it's concentrated. Less semiconducting material is needed to harvest energy there, and the solar cell stays cooler, negating the need for elaborate cooling systems.