(1)Shaving peaks and filling valleys, saving more than 60% of electricity costs by utilizing the peak and valley price difference. (2) Not subject to power outages, blackouts and power restrictions, not affecting normal production. (3) State subsidized equipment to offset corporate income tax. (4) Emergency disaster preparedness standby. (5) reduce carbon emissions, grid-connected operation, all gains, data open and transparent national grid monitoring and accounting (6) iron phosphate battery will not trigger its own thermal runaway, no explosion or fire.