How much does a megawatt of storage cost

The construction cost of energy storage power station, also known as system cost, refers to the cost of energy storage system per unit capacity. It is mainly composed of equipment installation cost (including battery cost) and construction cost (excluding land cost). Energy storage devices include energy storage batteries, battery management systems, energy storage inverters and power distribution systems, etc. The purchase cost of these devices constitutes the installation cost. Construction costs mainly include construction costs, installation costs, equipment and facilities design, commissioning and other costs. Battery costs account for a large proportion of equipment costs, and battery operation and maintenance and fault replacement are professional. In order to reduce the financial burden of one-time investment and the difficulty of battery operation and maintenance, investors lease batteries from battery manufacturers for a period of ten years. The battery manufacturer shall be responsible for daily operation and maintenance and free replacement of faulty batteries during the lease period, and the investor shall pay the battery cost annually. In the calculation process of energy storage construction cost, it is necessary to consider the total construction cost decline ratio, unit energy construction cost and energy storage capacity parameters. The plant electricity cost for energy storage is the cost of electricity used for energy storage in an energy storage station. The cost of electricity purchased by the power plant to maintain the operation of the energy storage station includes the cost of electricity purchased, the cost of electricity for self-use, and the related compensation and management expenses. In the process of calculating the cost of plant electricity for energy storage, it is necessary to consider the annual average electricity consumption rate, the proportion of energy used for energy storage in the plant electricity consumption, charging electricity price, energy storage capacity and other parameters. Some customers ask how much does a megawatt of storage cost? Today, the author gives an example of the cost of 1 MW storage.

Energy storage system specification: 544V1840Ah

Rated capacity: 1000kwh

Battery type: square type lithium iron phosphate battery

Battery voltage: 544V

Battery capacity: 400Ah

Charging current: 920A

Discharge current: 920A

Rated power grid voltage: 380V (AC)

Power grid frequency range: 50/60Hz

Power factor: 0.99 (lag) ~0.99 (lead)

Charge-discharge conversion time: < 200ms

Communication mode: Ethernet, RS485, CAN

Included: battery rack, distribution box, electric cabinet/air conditioning

Container design: grounding design, lightning protection design, lighting system design, temperature and humidity detection system design, safety and alarm system design, fire protection system design, electrical interlocking system design, mechanical interlocking system design, safety escape and emergency system

Energy storage system price: about 1.8 million RMB