CNC vertical lathes usually have some advantages in terms of energy consumption compared to traditional machining equipment, but whether it can be said that energy consumption is low depends on many factors:

1. Automated control: CNC vertical lathes adopt computer control systems. CNC vertical lathes can achieve a more precise processing process and avoid human errors in traditional processing, thus improving processing efficiency. This precise control reduces energy waste during processing.

2. Optimization of cutting parameters: CNC vertical lathe can achieve more efficient processing by optimizing cutting parameters according to the workpiece material, shape and processing requirements. This can reduce unnecessary cutting times and cutting volume, and reduce energy consumption.

3. Energy recovery: Some CNC vertical lathe equipment may be equipped with energy recovery systems, such as recovering braking energy or heat energy generated during the cutting process, to reduce energy waste and improve energy efficiency.

4. Energy-saving design: Some CNC vertical lathe equipment is designed with energy-saving factors in mind, using more efficient motors, transmission systems and accessories, as well as energy-saving cooling systems, thereby reducing overall energy consumption.

5. Conditions of use: The final energy consumption of a CNC vertical lathe is also affected by the conditions of use of the equipment, such as the operating level of the operator, the temperature and humidity of the processing environment, etc. Proper use and maintenance of CNC vertical lathes can maximize the energy-saving potential of CNC vertical lathes.

To sum up, CNC vertical lathes may have lower energy consumption than traditional mechanical processing equipment, but the specific energy consumption level also needs to consider factors such as the performance of the equipment itself, usage conditions, and operating methods.