Bend the pipes and prepare soldering

The incident sunlight is absorbed at 98% and is transmitted as heat to the carrier liquid.

A self-construction collector installation the size of 164 square meters in Wildhaus, Switzerland shortly before completion (summer 2004).

Functionality of a solar thermal collector

Assembly of a 32 squaremeter collector-installation in Bergün Switzerland 2006.

Sillicon is the second most abundant element on earth. It’s the main component of solar cells.

The house as a system of energy; including opportunities to produce local electricity and thermal power.

Phillips CD-rom drive at a Chinese e-waste scrap yard.

Part of a Toshiba computer at a Chinese e-waste scrap yard.