NEST is manufacturer of Solar lanterns. Flagship product Aishwarya received Ashden Award in 2005. Promotor Barki is has been in solar photovoltaics business for last 22 years, a B.Tech graduate in Electronics Engineering (1982), from KREC (Now NIT), Surathkal. Powered by a solar panel which generates four hours of light, the lantern is designed to replace the potentially deadly kerosene lamp. Dharmappa Barki at the age of nine witnessed the tragic death of his baby cousin from burns caused by a fallen kerosene lamp and vowed to find a solution- he did find one.