It is recommended to use various energy storage technologies in large quantities, especially lithium battery energy storage systems, which will optimize renewable energy power with high efficiency

　　Deploying different energy storage technologies can optimize and take advantage of the growing amount of renewable energy generation, MIT said in a research report released on May 12. Electricity from renewable sources is expected to replace electricity from fossil fuels by mid-century.

　　Although SES Power mainly focuses on lithium battery/lithium iron phosphate battery energy storage products, especially the lithium iron phosphate battery that can perfectly replace lead-acid batteries, because of its long life, high safety performance, environmental protection, low price and other advantages Widely popular, for example, we use the square aluminum shell lithium iron phosphate batteries of famous battery manufacturers such as CATL and EVE to make 12V100Ah, 12V200Ah, 48V100Ah and even 120V300Ah energy storage systems. However, other energy storage methods still have a very large market demand. Lithium battery energy storage is not the optimal solution for all energy storage needs, so we will care about other types of energy storage methods.

　　The MIT Energy Initiative (MITEI) study, titled "The Future of Energy Storage," aims to support and use existing and emerging grid-scale energy storage technologies in an economically viable manner. Ways to reduce carbon emissions provide a blueprint. The nearly 400-page research report investigates and studies the energy storage market in the Northeast, Southeast, and Texas, which reflect different demand mixes and levels of wind and solar generation.

　　The report also assesses the potential of energy storage systems deployed alongside renewable power generation facilities to replace coal-fired power plants in India and other countries. The report states that as energy storage systems are added to the grid, policies must be adjusted to avoid excessive and unfair burdens on consumers, encourage electrification across industries, and ultimately decarbonize the entire economy and drive strong economic growth. Especially in developing countries in emerging markets.

　　The MIT study, which spanned over three years, investigated and analyzed options for utilizing various energy storage technologies (electrochemical, thermal, chemical, and mechanical) that could effectively capture, store Variable wind and solar power.

　　Building a climate-friendly grid in the U.S. will require changes in planning and operating tools and systems to reflect what is needed to combat climate change, the report said. The report recommends a budget increase that would make energy storage more economically viable. In addition, it is proposed to modify some current practices of the US federal government, such as the practice of granting intellectual property to private sector partners who share the cost of technology demonstration projects. The report also claims that public investment in technology demonstration and early deployment activities is to disseminate technology and knowledge.

　　In the past, the U.S. Department of Energy has insisted that private sector partners share project costs, and the private partner is often awarded intellectual property in return. This practice undermines the dissemination of information among all industry players, thereby failing to create conditions for effective competition. Federal demonstration projects should include clear requirements for sharing information with other U.S. entities that have not yet become partners, even if this requires additional federal funding.

　　SES Power agrees with this statement that knowledge is only stronger when it is shared, and of course it is not unprincipled sharing.

　　"Excess electricity from solar and wind facilities can be stored by energy storage systems and fed into the grid when electricity prices are high," said Robert Armstrong, professor of chemical engineering and director of the MIT Energy Initiative (MITEI), in launching the report, such a model is cost-effective and maintains the reliability of the power supply.”

　　The study concluded, "Assuming the cost of wind and solar power continues to decline, the study's models identify cost-effective pathways to decarbonize the power system, compared with 2005 carbon emissions levels in the United States, Carbon emissions have been reduced by 97% to 99%. Effective decarbonization will require substantial investment in multiple energy storage technologies, as well as in transmission, clean generation and demand flexibility.”

　　Jin Noh, policy director of the California Energy Storage Coalition, said of the report, “It is helpful to understand where and how energy storage technology needs to evolve, understanding the various trade-offs between installed capacity costs, charge-discharge round-trip efficiency and duration, etc. Yes.” He added that this could guide policy on the development and commercialization of various energy storage technologies.

　　Today's dominant energy storage systems are mainly lithium-ion battery energy storage systems with a duration of up to 4 hours typically, and in the future, energy storage systems with longer durations will need to be provided to meet different grid needs, because based on weather and seasons demand for electricity is increasing. The U.S. Department of Energy is currently developing a research goal to help reduce the cost of energy storage systems beyond 10 hours. The department recently approved $505 million to advance the development and deployment of long-duration energy storage combined with renewable energy.

　　The MIT report calls for greater support for the development and application of longer-duration energy storage technologies, particularly electrochemical energy storage technologies using widely available materials, including from secondary-use batteries and recycled batteries. Considering the reuse of retired lithium batteries such as Tesla electric vehicles, SES Power believes that this is the right route, because we have used echelon lithium batteries a long time ago to make highly cost-effective lithium battery energy storage systems.

　　The report said that since there is not as much investment support as lithium-ion battery energy storage systems, more financial funds from the government are needed to support the development and utilization of energy storage systems longer than 12 hours. Private financing for these energy-dense, low-cost batteries in electric vehicles would significantly improve the prospects for short-term energy storage, the report noted.

　　Another challenge, the report said, is that long-duration energy storage systems will be of little value when wind and solar production declines. Therefore, because the characteristics and values of intermittent energy are very different, MIT is also asking for higher fixed fees to ensure that long-term energy storage technology can be profitable.

　　Howard Gruenspeccht, senior energy economist at MIT, said: "Our modeling suggests that in a decarbonized power system dominated by wind and solar, the longer the duration, the lower the marginal cost of the energy system will be. Or zero. Since future decarbonized power systems are likely to have high capital costs, fixed fees should play a larger role in cost recovery. This includes charging based on consumer income levels, which can balance equity and efficiency."