LDES, the future of renewable energy

LDES (long duration energy storage) are developing in parallel with renewable energies because they are necessary for decarbonization.

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LDES (long duration energy storage) are developing in parallel with renewable energies because they are necessary for decarbonization.

An essential development

The development of LDES is essential to contribute to the fight against climate change. It is the perfect complement to clean but intermittent energy sources. Energy storage is indeed necessary when the intermittency of solar and wind energy prevents the production of energy.

Storage technologies already exist. However, the development of LDES is not enough. These technologies have the potential to ensure system reliability by enabling cost-effective decarbonization of power systems.

In recent years, lithium-ion batteries have received increasing interest. However, these batteries lack economic competitiveness for long-term energy storage. In addition, they have safety and sustainability issues, including thermal runaway and significant recycling costs.

Long-term storage technologies already exist and are promising. Their use seems more appropriate than lithium-ion batteries for many purposes. However, the cost of these technologies is expensive and efforts are needed to reduce it.

Various LDES technologies

Various LDES technologies already exist, each at different levels of maturity and market readiness. Among these, the RFB (Redox flow battery) technology is characterized by its ease of adaptation. It has a long service life and high operational safety. These characteristics make these batteries suitable for stationary storage.

However, this technology suffers from its low energy density compared to lithium-ion batteries. Within the RFB technology, VRFB (Vanadium RFB) batteries have been more widely deployed to date. High initial investment costs hindered their adoption.

The fluctuating cost of vanadium presents an additional challenge. Rapid scaling is needed to reduce costs and realize the potential of this technology. In addition, thermal energy storage and mechanical storage can also be interesting LDES technologies.

Thermal energy storage has the advantage of using cheap and abundant materials. However, converting heat into electricity in an efficient and cost-effective manner is a technological challenge. The mechanical storage is confronted with the need of a suitable topography for its development.

The U.S. energy storage market set a historic record in early 2025, surpassing 2 GW installed in the first quarter despite increasing uncertainty regarding federal fiscal policies and tax credits.
The Sino-Moroccan joint venture COBCO has begun manufacturing essential lithium-ion battery components at its Jorf Lasfar plant, targeting a final annual capacity of 70 GWh, enough to equip one million electric vehicles.
Trianel teams with BKW and Luxcara to build a 900 MW lithium-iron-phosphate storage park in Waltrop, the first phase of a complex that could reach 1.5 GW and stabilise the German grid.
Blue Whale Energy partners with UNIGRID to deploy behind-the-meter storage systems adapted to constrained commercial and industrial urban areas in Southeast Asia.
Northvolt, recently placed under judicial administration, has received an indicative offer from a foreign investor to acquire its Swedish assets, signaling a potential imminent restart of its battery production units.
The frame agreement aligns Jinko ESS’s utility-scale storage technology with Metlen’s development pipeline, unlocking more than 3GWh across Chile and Europe while reducing delivery risk for grid operators.
Buffalo-based Viridi has obtained the cETLus mark for its RPS150 system, meeting the UL 9540 standard only days after a public battery fire-containment demonstration.
Tesla is building a giant electricity storage facility in Shanghai, China, signing a $560 million contract to meet growing demands on the urban electricity grid.
Envision Energy signs a turnkey contract with Kallista Energy for a 120 MW / 240 MWh energy storage project in Saleux, Hauts-de-France, marking its entry into France’s stationary battery market.
The Dubai-based company obtains a USD72mn loan to add a 300MWh battery system to its 500MW solar plant in Kom Ombo, with commissioning expected in July 2025.
Asian developer Gurīn Energy selected Saft to supply a battery storage system exceeding 1 GWh in Fukushima, marking a new stage in Japan’s energy storage deployment.
Chinese lithium-ion battery manufacturer CBAK Energy confirmed a $11.6mn order for LFP cylindrical batteries to power the electric motorcycle fleet of a rapidly growing African group.
China’s 600MW/2400MWh project enters energisation phase following the installation of 240 battery containers, initiating initial maintenance of this ultra-high-voltage hybrid energy facility.
Wanhua Chemical has signed a strategic agreement with Serbian manufacturer ElevenEs to establish a localised supply chain for LFP battery materials, reinforcing their technical and industrial cooperation in the European market.
The partnership targets the development, construction and operation of over 500 MW of battery energy storage systems in France, with 200 MW nearing the construction phase.
Envision Energy and SUN Terra join forces to build a full energy storage value chain in Southeast Asia, India and Australia, including local manufacturing and technology licensing.
EDF Renouvelables has started building its first large-scale energy storage battery in Poland, a 50 MW project set to be operational by late 2025 in the Opole region.
Enfinity Global has sold a 49% minority stake in two energy storage projects in the US and Italy to Daiwa Energy & Infrastructure, a major player in alternative investments.
Sigenergy deployed a 20 MWh modular energy storage system on a solar power plant in Bulgaria, demonstrating a targeted industrial investment in high-efficiency storage technologies.
Chinese lithium-ion battery maker CBAK Energy received a new $3mn order from India’s Livguard, bringing the total value of their agreements to $7.9mn.