In pictures: 11 eye-catching solar tech projects

From the world's largest solar furnace to a still that turns salt water into drinking water, the range of devices that harness the sun's energy is breathtaking. Here are some of our favourites

Hot enough for ya? Solar cookers are based on their much larger brethren, solar furnaces -- massive solar structures that focus heat from the sun onto a small area, creating extraordinarily high temperatures. This heat can be used for a variety of purposes, such as hydrogen fuel production, for research that requires high temperatures, even to make nanomaterials.

This solar furnace, located in sun-drenched Odeillo in the French Pyrenees, is the largest in the world. It has been around since 1970 and uses 63 heliostats to reflect the sun's rays onto a 21,500-square-foot parabolic mirror, which concentrates the energy onto a focal point. The furnace can heat up an area roughly the size of a teakettle to over 6,000 degrees Fahrenheit.

6 of 11

Comments on this image

There are currently no comments for this image.

Comments are now closed.

Related Slideshows

Most Popular Reviews

Follow Us

Best Deals on GoodGearGuide

Latest News Articles


GGG Evaluation Team

Kathy Cassidy


First impression on unpacking the Q702 test unit was the solid feel and clean, minimalist styling.

Anthony Grifoni


For work use, Microsoft Word and Excel programs pre-installed on the device are adequate for preparing short documents.

Steph Mundell


The Fujitsu LifeBook UH574 allowed for great mobility without being obnoxiously heavy or clunky. Its twelve hours of battery life did not disappoint.

Andrew Mitsi


The screen was particularly good. It is bright and visible from most angles, however heat is an issue, particularly around the Windows button on the front, and on the back where the battery housing is located.

Simon Harriott


My first impression after unboxing the Q702 is that it is a nice looking unit. Styling is somewhat minimalist but very effective. The tablet part, once detached, has a nice weight, and no buttons or switches are located in awkward or intrusive positions.

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?