Long-duration energy storage is still in its early stages of development and there is no universally agreed-upon definition for the duration of long-duration energy storage, both domestically and internationally. The definition of long-term energy storage varies across regions due to differences in power demand, renewable energy distribution, energy storage scale layout, and energy storage policy support. In China, for instance, long-term energy storage is generally defined as energy storage technology lasting more than 4 hours, in order to differentiate it from the large-scale construction of 2-hour energy storage systems.

The global market for long-duration energy storage has experienced significant growth in recent years, with the value of projects currently in operation or under construction exceeding $30 billion. If all ongoing projects are completed and put into operation in the next few years, the total installed capacity of long-term energy storage is expected to increase by 57 million kilowatts. This would be equivalent to approximately three times the total installed capacity of long-term energy storage worldwide in 2022. These developments are of great significance for the mid- to late-stage construction of a zero-carbon power system and in achieving the goal of reducing carbon emissions.

「ダブルカーボン」目標の達成に向けて火力発電の設備容量の割合が徐々に減少する中、安定したベースロード電源の確保が求められています。 「長期エネルギー貯蔵＋大規模風力・太陽光プロジェクト」は、化石燃料に代わる有望な代替手段として浮上しており、将来のベースロード電源となる可能性が高い。この移行は、長期的にはゼロカーボン電力システムの構築にとって極めて重要です。

安定した発電を提供することに加えて、長期的なエネルギー貯蔵は、変動する再生可能エネルギー源による発電量を管理する上でも重要な役割を果たします。風力エネルギーと太陽光エネルギーの割合が増加するにつれて、発電の断続性が送電網の安定性に課題をもたらしています。この問題に対処するには、より多くの伝送ネットワークを構築するだけでは不十分です。長期間にわたる新エネルギー発電量の変動を調整する能力を備えた長期エネルギー貯蔵は、余剰クリーンエネルギー期間中の送電網の混雑を回避し、ピーク負荷期間中のクリーンエネルギー消費を改善するのに役立ちます。

Another significant application of long-term energy storage is ensuring power supply during extreme weather events and reducing electricity costs for society as a whole. As we work towards achieving the "double carbon" goal, large-scale and high-security power systems are required for different durations. Energy storage technology, especially long-term energy storage, is poised to become one of the core technologies in ensuring energy security. Research and development efforts are crucial during the 14th and 15th Five-Year Plan periods to develop advanced technologies for adjusting the medium and long-term power structure and to expand the overseas long-term energy storage market.

Looking towards the future, as new energy power generation approaches or even surpasses 50% of total power generation, the need for energy storage technology with a duration of 10 hours or more will become increasingly crucial. The random and volatile nature of renewable energy sources makes it insufficient to support the safe and stable operation of power systems. Long-term energy storage will therefore play a vital role in ensuring peak supply, coping with extreme weather events, and mitigating the seasonal imbalances of new energy sources. For example, in southeastern coastal areas where wind power has a high share, the occurrence of typhoons or other extreme weather events may lead to shutdowns of wind turbines and power shortages lasting 3-5 days. In such cases, energy storage with a duration of approximately 100 hours is required to meet the adjustment needs and ensure uninterrupted Energy storage power supply.

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自冷式-EN-215 屋外分散型エネルギー貯蔵キャビネット - 電源タイプ

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