The report takes a survey of five crucial areas where nanotechnology is implied. It includes areas of economy through hydrogen, electricity generation with the help of solar cells, fuel additives, batteries, and super capacitors, and insulators. In concern with fuel additives, with the help of nanoparticle, the efficiency of fuel of diesel engines was increased by up to 5 %, which produced about three-million metric tons of CO2 in the UK per year. The study also cautions that this efficiency of fuel additives also led to the release of toxic nanoparticles openly in the environment. Due to small in size, no control could be applied to the restriction of the emission of nanoparticles. Thus, this exhaust gas proves to be harmful to humans. Although a diesel engine, if properly maintained can last up to 300,000-600,000 miles. In comparison with diesel engines, electric engines produce very little efficiency. Solar cells are still a promising area in nanotechnology since they have shown the results of a decrease in the cost while solar cells were produced and have enabled more cell production.