[Daox]

An interesting alternative to a solar pv panel...

In 2010, scientists from Yansei and Stanford University pioneered a technique by where 30-nanometre wide gold electrodes were inserted into the photosynthesising organs – chloroplasts – of algal cells, thus managing to draw a small electrical current from algae during photosynthesis. As advances in nanotechnology lead to increasingly energy efficient products, plant life such as algae will become attractive sources for tapping energy. Latro is a speculative design concept responding to this potential future market.

Here is a video:
Latro: Algae Powered Lamp on Vimeo