self powered microalgae street lamp absorbs CO2
apr 24, 2012
self powered microalgae street lamp absorbs CO2

pierre calleja has developed a CO2-absorbing, self-powered lamp for use as street lighting, currently in prototype testing in france (above image is a concept composite)

french biochemist pierre calleja has developed a lamp for use as street lighting as well as in indoor spaces
that is powered without electricity, absorbing carbon dioxide as it functions. beta testing of a prototype streetlight
is currently in progress in a parking lot in bordeaux, france.

the lamps are composed of a tube containing microalgae, as well as a battery during the day, the batteries are charged
via photosynthesis of the algae, using both solar power and CO2 (both of which are usable by the plantlife).
this means that the lamps represent a viable electricity-free lighting solution even for locations where there is no
or little natural light, such as underground parking garages. at night, the stored power is used for lighting.

calleja notes that about 25% of CO2 present in the air is thought to be generated from car exhaust, so using the devices
as roadside lighting helps solve two social problems at once, each unit absorbing an estimated ton of emissions per year.
in fact microalgae is more efficient than trees, to the extent that each lamp absorbs a reported 150 to 200 times from CO2 than a tree.

pierre calleja discusses the microalgae street lamps, in a video for shamengo social good promoters

the microalgae in the tube

scaled properly, the lamp can be used in indoor spaces as well as roadside

calleja imagines the lamp utilized as air purifier, display piece, and lighting in shops

filling the lamp form with microalgae-containing fluid

via dvice

comments policy
login with designboom
designboom's comment policy guidelines
generally speaking, if we publish something, it's because we're genuinely interested in the subject. we hope you'll share this interest and if you know even more about it, please share! our goal in the discussion threads is to have good conversation and we prefer constructive opinions. we and our readers have fun with entertaining ones. designboom welcomes alerts about typos, incorrect names, and the like.
the correction is at the discretion of the post editor and may not happen immediately.

what if you disagree with what we or another commenter has to say?
let's hear it! but please understand that offensive, inappropriate, or just plain annoying comments may be deleted or shortened.

- please do not make racist, sexist, anti-semitic, homophobic or otherwise offensive comments.
- please don't personally insult the writers or your fellow commenters.
- please avoid using offensive words, replacing a few letters with asterisks is not a valid workaround.
- please don't include your website or e-mail address in your comments for the purpose of self-promotion.
- please respect jury verdicts and do not discuss offensively on the competition results
(there is only one fist prize, and designboom usually asks renown professionals to help us to promote talent.
in addition to the awarded designs, we do feel that almost all deserve our attention, that is why we publish
the best 100-200 entries too.)

a link is allowed in comments as long as they add value in the form of information, images, humor, etc. (links to the front page of your personal blog or website are not okay). unwelcome links (to commercial products or services of others, offensive material etc. ) will be redacted. and, ... yes, spam gets banned. no, we do not post fake comments.

street lights (23 articles)

product library