How much does it cost to build a 1MW photovoltaic energy storage power station?
2024-10-07
In recent years, with the popularization of new energy photovoltaic and wind power generation, the installation of energy storage batteries has also increased. In this article, we take a 1MW photovoltaic power generation system as an example to discuss the cost and return on investment of building a 1000 kwh battery and photovoltaic energy storage power station.
Photovoltaic modules: When choosing photovoltaic modules, many factors need to be considered, including module type (monocrystalline, polycrystalline, thin-film modules, etc.), efficiency (considering conversion efficiency and temperature coefficient), price, quality, certification, durability, warranty period, manufacturer reputation, etc. The current price of photovoltaic modules on the market is about US$0.12/W, and the total cost is about US$120,000.
Recommendations for selecting photovoltaic panels
1. Choose the type of photovoltaic panel that suits you according to actual needs;
2. Choose the power of the photovoltaic panel according to the power of the equipment, while considering the actual lighting conditions. You can go online to check the local annual average sunshine intensity and other meteorological data.
3. Choosing high-efficiency photovoltaic panels can increase power output, but the price is relatively high, and you need to choose according to actual needs and economic conditions.
4. Choose a high-quality, formal, qualified, and well-serviced photovoltaic panel manufacturer, and pay attention to the waterproofness of the photovoltaic panel.
5. Choose a photovoltaic panel that suits your usage scenario. If it is a mobile application or outdoor activity, you can choose a flexible thin-film photovoltaic panel.
In short, choosing a photovoltaic panel that suits you needs to consider multiple factors, such as needs, scenarios, functions, etc., and then make specific decisions based on actual conditions.
Photovoltaic plus energy storage inverter: When choosing a photovoltaic and energy storage inverter, consider the ratio of power to component capacity, conversion efficiency, grid compatibility, monitoring and intelligence, after-sales warranty, etc. The current reference price is about US$0.2/watt. The total cost is about US$200,000.
Recommendations for selecting a photovoltaic energy storage inverter
1. The photovoltaic energy storage inverter combines the functions of photovoltaic and energy storage inverters
2. The power of the photovoltaic inverter should be consistent with or slightly larger than the power generated by the installed photovoltaic panels
3. The energy storage inverter, especially the AC output power, must be greater than the power consumption of the load. It is recommended that the AC output power of the energy storage inverter be greater than 20% of the load power. If the output is off-grid, it is recommended to select an energy storage inverter with an isolation transformer to ensure the long-term stable operation of the system.
Mounting system: Generally speaking, the cost of photovoltaic mounting system is comprehensively considered from several aspects, such as materials, structure, installation convenience, safety and reliability. At present, the price of mounting system is about 0.03~0.05 USD/Watt. The total cost is about 30,000~50,000 USD.
Is my roof suitable for installing a solar photovoltaic power generation system? How much installation area do I need?
The selection of photovoltaic brackets needs to consider the installation location, such as rooftop installation or ground installation. The type and material of the brackets used are different. In addition, the local meteorological conditions need to be considered, such as whether typhoons occur frequently. For more introductions to photovoltaic brackets, please refer to article Is my roof suitable for installing a solar photovoltaic power generation system? How much installation area do I need?
Energy storage system (select on demand) The price of energy storage system depends on the storage capacity and type, generally around $0.1/Wh. The cost of 1000 kwh energy storage battery is about $100,000. However, the capacity of energy storage battery may increase or decrease according to different needs of customers, and the cost will also increase or decrease accordingly.
Notes on selecting energy storage batteries
Energy storage batteries are flammable and explosive, and are also the core of whether the entire photovoltaic energy storage power station can operate safely. Energy storage batteries are assembled by energy storage cells in series or parallel.
(1). Choose a reliable cell brand, such as CATL, EVE, BYD, etc. Please refer to the article “The global bess manufacturers ranking: the top 5 ess factories are all Chinese companies”
(2). Choose a reliable energy storage system integrator.
(3). Choose an energy storage battery of appropriate size according to the actual needs of the project to avoid excessive initial investment. If the capacity of the energy storage battery is not enough in the later stage, you can also add energy storage batteries to expand the capacity.
For more information about energy storage batteries, please refer to “Which battery is best for energy storage?”
Design and planning:
(1). Preliminary investigation and evaluation include
Site survey:
Including the terrain, building structure, and obstructions at the installation site.
Meteorological data: obtain local meteorological data such as solar radiation, temperature, and wind speed.
Grid conditions:
Understand the voltage, frequency, and grid connection requirements of the local grid.
(2). System design:
Component selection:
Inverter selection, bracket design (optimal angle and direction), wiring design, and power distribution design.
(3). System planning:
Power generation forecast:
Predict the average annual power generation of the system based on meteorological data and system design.
Economic analysis:
including the system's investment cost, operation and maintenance cost, power generation income, etc., and calculate the investment payback period.
Grid connection plan:
Design a grid connection access plan to ensure that the system can be safely and stably connected to the grid.
(4). Construction and installation:
Construction plan and installation and commissioning plan
(5). System monitoring and operation and maintenance
(6). Compliance and reporting
Currently, the cost of design and planning is different in each country and region.
Construction and installation:
Generally includes component installation, bracket installation, electrical equipment installation and wiring, as well as debugging, testing, acceptance, etc. The current cost is about $0.05/watt. That is about 50,000.
Similarly, different countries and regions have different labor costs and different costs.
Operation and maintenance costs
Daily operation and maintenance: including cleaning, monitoring and minor repairs, etc., about 5000 US dollars/year
Insurance costs: insure the power station to deal with natural disasters and accidents. About 5,000 US dollars/year.
Insurance costs: insure the power station to deal with natural disasters and accidents. About 5,000 US dollars/year.
Shipping costs:
Since the shipping costs vary from country to country, please check the shipping costs according to your country's situation.
Taking all the above costs into consideration, the total investment of a 1MW distributed photovoltaic power station with 1000kwh energy storage battery is roughly between 520,000 and 560,000 US dollars. The specific cost needs to be calculated in detail according to local market prices, policies and specific project requirements. Or you can contact us for a more accurate cost calculation for your project.
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