What is the price of super capacitor energy saving product?

During the operation of some large equipment, in order to ensure that he can carry out energy-saving operation, some enterprises will choose super capacitor energy saving products to install. In this way, the equipment in the process of machine operation, its energy saving will be a little better. But if we buy the super capacitor and energy saving products in the market, it will not be much higher when he buys it. If the cost of the purchase is high and the electricity we save, will it be so high that the price of the equipment is not yet purchased?
In fact, it depends on what kind of equipment we use when we buy it. With a number of large equipment, the type and parameters of the supercapacitor energy saving products he needs to use are very special. So some equipment like this, the price of the super capacitor, which he bought, will be higher naturally. It can be selective to see if it needs to be equipped.
And there are some very common operating equipment, and when he is in use, the use of super capacitor energy-saving products is common. The price is not particularly expensive, basically the enterprise can undertake. So we use this kind of equipment, equipped with a super capacitor energy saving products, will be more cost-effective.