On cloudy days, solar lamps do the job.
Indoor solar lamps with separately-mounted solar panels are used for general illumination where centrally generated power is not conveniently or economically available.
They also erected two solar lamps.
The solar lamps may also help to reduce health problems suffered by people in rural areas due to excessive breathing of particulate laden kerosene fumes.
On 5 July 1993 the light was shut down and replaced with a fully automated, solar powered lamp on top of a lattice skeletal tower.
Other finalists presented a solar lamp, which is in production right now, and a carbon reduced goods transport, making use of the tramways in city centers.
The most sustainable source of lighting is daylight, other forms are solar lamps harvesting daylight and lighting controlled by occupation sensors.
Akira Urumuri products include solar powered lamps and solar powered mobile phone chargers.
A solar lamp costs about the same as a few months of kerosene for a kerosene lamp, and provides many years of light.
An array of solar lamps had been installed above the courtyard that lay between their respective living quarters.