Is it legal for Beijing Shangdi Huihuang International Plaza to charge the air-conditioning basic operation fee?

This is legal. At present, the latest domestic household metering heating method only adopts a similar calculation method, which requires both basic operation fee and flow fee, so that the maintenance funds of heating enterprises can be shared by all owners, because these equipment are shared by all owners, and energy conservation and emission reduction are considered, encouraging energy conservation. Use less and pay less.