By petrol and diesel combustion converted into electrical energy to provide electricity for lamps and lanterns, lighting is not to be used for a long time, after each filled with gas, basic lighting only 13 hours, and energy consumption of power utilization is only 30% 45%, and after combustion emissions of harmful gases, damage to the environment. 2 rated working voltage of 220 v, the human safety voltage, if the failure to get an electric shock is easy to cause casualties;
3 late manpower, mobile light equipment maintenance cost is high, the overall cost is much higher. In 3 years use cost, for example: 1 hours of fuel 6 yuan/liter, 10 hours per day, 365 days a year, plus artificial, equipment maintenance three years amounted to 120000 + equipment procurement 120000 = 240000.
