Take business buildings, functional blocks and regional facilities as the main carriers to develop and lease buildings to introduce various enterprises, so as to introduce tax sources and drive regional economic development. The annual power consumption of office buildings accounts for about 10% of the total national consumption, and the annual electricity consumption of most office buildings is above 1 million KWH. Therefore, commercial buildings require very high reliability of power supply. General commercial buildings (especially represented by super high-rise) are equipped with two independent power sources, but their internal contains particularly important loads. When one power supply system is undergoing maintenance or failure, the other power supply system will fail seriously. At this time, the diesel generator set is generally configured as emergency power.

As the urbanization process continues to advance, the building industry (especially represented by super high-rise construction) has put forward higher requirements on energy efficiency guarantee, and the generator sets will be more used as backup power in various projects to help the development of the industry.