Images are stills from the Shamnego video. Top: a prototype lamp installed in a car park
Shamengo pioneer Pierre Calleja has designed algae lamps that absorb CO2 from the atmosphere during the day then store the photosynthesised energy in a battery.
The lamps are a tube filled with mixotropic algae and a battery. During the day, the batteries are charged by the photosynthesis process, using both solar power and CO2.They will each absorb 1 ton of CO2 a year.