The owner of this hotel installed a 30KW solar energy system several years ago. Later, the hotel upgraded more equipment such as air conditioners and washing machines, which led to insufficient transformer capacity. After learning about Mars' products, the owner decided to install an additional 100KW solar system. This installation successfully enabled the hotel to achieve independent power generation and zero electricity cost. It not only saves the hotel USD 4,000 in electricity bills every month but also eliminates the worry of power outages.