In the past few years, commercial battery storage technology has developed rapidly—making solar cell storage a practical choice for many organizations. Commercial backup battery storage solutions are not specifically designed for homeowners. Therefore, companies of all sizes can benefit by installing backup batteries for their solar systems.
The role of commercial storage battery systems goes far beyond increasing the self-consumption of photovoltaic systems. They have a series of functions and applications, enough to illustrate their purpose. In the best case, you can combine multiple applications and shorten the amortization period.
This article shows the possible applications of commercial storage using the possibilities provided by the BSLBATT Battery Storage System. Then, he demonstrated the technical requirements of commercial storage batteries and residential storage batteries and focused on market development.
The battery storage system is specifically used in the private sector or the residential sector to optimize the self-consumption of the photovoltaic system. This is different from battery storage systems used in industry or trade. These fields have a series of possible application fields, some of which can be used in combination. The tasks of the storage facility must be precisely defined so that it can be planned and selected accordingly.
The programming in the energy management of the storage unit ensures that the storage unit is implemented and used in practice. In the following, I will introduce twelve possible applications and application areas of commercial storage in the United States.
Large roofs of factories or other buildings are suitable for installing photovoltaic systems. Sustainable electricity is cheaper than electricity from the utility grid. With the help of the battery storage system, the company can increase the power consumption on the roof. It makes itself more independent of electricity supply and rising electricity prices. In addition, the cost can be planned for a long time, and the company can reduce the cost of grid connection.
When all machines are turned on in the morning, power consumption will increase significantly in a short period of time. These peak loads borne by power suppliers have resulted in higher costs passed on to consumers. The energy cost consists of the energy price of the kilowatt-hour consumed in 15 minutes and the electricity price of the maximum kilowatt-hour.
The energy management of the battery storage system can control the purchase of electricity by calling it from the storage system rather than from the grid during peak load periods. This avoids the classification in higher electricity prices, thereby saving electricity bills. On the one hand, it reduces the power supply pressure on the grid, and on the other hand, it reduces the electricity expenses of factories or enterprises. This is what we often call "peak cutting and filling valley".
A safe power supply is important to the function and normal operation of each company. Building technology and production systems cannot fail. Otherwise, it will cause great economic losses. Therefore, diesel emergency generators are often used to ensure smooth operation. These sounds are not only loud but also cause harmful emissions. Their fuel and maintenance costs are also high.
A battery storage system can provide emergency and backup power within a few milliseconds to a few seconds. Before disconnecting from the grid, the standby power source considers the maintainability requirements of the grid, such as photovoltaic systems. The emergency power supply is disconnected immediately, regardless of the utility of the power grid.
More and more companies are converting their fleets to electric vehicles or offering charging options for their employees' electric vehicles. However, the charging infrastructure can ensure high power consumption and load peaks, which may overload the grid connection.
The battery storage system regulates the power consumption from the grid and avoids peak loads. With photovoltaic systems, they can ensure more use of self-generated electricity, thereby reducing costs.
If the electricity rate changes throughout the day, the battery storage system can utilize the favorable electricity rate by charging the storage unit and use the electricity from the storage unit at an expensive electricity rate. Due to cost savings, price increases have less impact on the company's energy costs.
The fluctuation of renewable energy generation is a challenge for grid operators to always balance the generation and load in the grid. Battery storage systems can promote grid stability by drawing power from the grid when the supply is too high and releasing power when the demand is high. They provide major control reserves directly to network operators or suppliers through virtual power plants.
Today's modern machines, production systems, robots, data lines, transformers and other equipment require stable power quality without fluctuations in power supply voltage. These can cause damage, leading to production downtime. The company itself is responsible for monitoring the power quality so that it can claim their insurance benefits in the event of damage. An inverter with battery storage can take on this task and ensure a consistently high network quality.
The photovoltaic system for which operators charge feed-in tariffs allows only part of the maximum output to be fed into the grid. They must be limited to a maximum of 70%. The energy manager in the battery storage system regulates the energy storage in such a way that there is as little loss as possible due to the limitation of the system output. This is achieved through an intelligent charging and consumption strategy for the battery system based on weather forecasts, battery capacity, and charging status and general consumption behavior.
The restrictions of the grid may mean that the photovoltaic system is never allowed to supply power to the grid. To this end, operators must propose a zero-feed concept to ensure that excess power is reduced in a short period of time.
A battery management system with a smart inverter can be configured for this application. It ensures that even if the storage tank is fully charged, no excess solar energy will be fed into the grid.
In peninsula operations, electricity can be obtained from the grid, but cannot be fed into the grid. This operation may be necessary if the photovoltaic system is expanded to the extent that it overloads the local grid. Then the operator must ensure that no electricity enters the public grid.
With a suitable energy manager, system operators can work in peninsula mode, install and operate renewable energy systems of any size. This ensures that no electricity can be fed into the public grid.
The interface with the direct seller ensures that the system operator can provide electricity through the marketer. In Germany, this is mandatory for systems that output more than 100 kW. The energy manager of the storage system communicates with the remote control unit of the virtual power plant to transmit all relevant data in real time. Compared with feed-in tariffs, operators can obtain higher income through direct marketing.
A Microgrid is a power network at the distribution network level. When the existing network connection is insufficient, the battery storage system is used to ensure power supply. This makes it possible to expand residential or industrial areas without the need to expand the grid connection. The energy manager in the battery storage ensures the necessary balance between required energy and demand. To do this, it uses weather forecast data, memory capacity and its charging status.
The different applications of commercial storage battery systems show the diversity of their uses. Many processes in the storage facility increase its profitability. This is one of the main differences from the residential sector or electric vehicle storage systems, each of which is designed for only one application.
In the residential sector, the energy storage system is only responsible for optimizing the self-consumption of the photovoltaic system. They are usually loaded and unloaded once a day, depending on the amount of solar power generation and consumption. Compared with trade and industrial storage systems, these requirements are static and simple.
On the other hand, commercial storage battery systems require greater flexibility. They usually combine multiple applications and are exposed to changing load profiles.
For both stationary battery storage systems, customers require a long service life, which means that the battery cells must be of high quality.
For the US energy storage industry, although it is still a world leader in the use of batteries in the power grid and renewable energy, clear steps have been taken this year. In the third quarter of 2020, all market segments across the United States will deploy 467MW/764MWh high-pressure energy storage system was installed. This is more than twice the previous record for the highest deployment quarter.
Commercial storage battery systems represent the smallest market for battery storage systems. But you can clearly see the growth in this area. Kelly Speakes-Backman, CEO of the National Energy Storage Association (ESA), said that 2021 will be "an important year for commercial energy storage battery systems" and the industry will continue to accelerate increase. Rate-It is expected that at least 3.6GW of storage will be online.
Commercial storage battery systems still play only a minor role in the market. However, the continuous expansion of renewable energy and the trend of electric vehicles will significantly increase demand in the future. The biggest driving force of commercial Storage Battery Systems is the diversity of their applications. They increase the application possibilities and profitability of battery storage systems. Therefore, the market is expected to achieve significant growth.
As a lithium batteries and energy storage solution supplier, our targets are focused on the following markets: microgrid solutions, industrial/commercial energy storage, communications/data center battery energy storage, transportation/utility energy storage systems, and uninterruptible power supply(ups) and BSLBATT Powerwall (home solar energy storage battery).
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