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China’s energy storage sector is rapidly expanding. As a solution to balancing the country’s growing energy needs and mass renewable energy production, the industry has attracted investments worth hundreds of billions of yuan (tens of billions of dollars).

This has seen China become the world’s largest market for energy storage deployment. Its capacity of “new type” energy storage systems, such as batteries, quadrupled in 2023 alone.

This rapid growth, however, has caused other problems, such as what one analyst described as “temporary structural overcapacity” and low utilisation.

In this Q&A, Carbon Brief explores how China has been driving the sector forwards and how it fits into the nation’s wider energy transition.

Soaring battery deployment

China is currently the world’s largest market for energy storage, followed by the US and Europe, according to BloombergNEF.

This position was driven by a combination of market need for balancing renewable energy and government efforts to build a “new power system”.

China installed a massive 301 gigawatts (GW) of renewable capacity including solar, wind and hydro in 2023 alone – more than the total renewable generating capacity installed in most countries over all time.

As of May 2024, “clean energy” generated a record-high 44% of China’s electricity, according to Carbon Brief analysis.

However, despite the renewable energy boom, China’s power system still struggles to absorb all of the generation, making energy storage – which bridges temporal and geographical gaps between energy supply and demand – a key tool for the country to improve its renewable energy integration.

The majority of China’s storage capacity comes from large-scale storage projects, such as hydropower with reservoirs on the Yangtze River and gigawatt-level battery energy storage systems in Inner Mongolia.

Arial view of the Three Gorges Dam in Hubei province, China. Credit: Sipa US / Alamy Stock Photo

Pumped hydro storage is the most common utility-scale storage system and has a long history in China. It pumps water uphill to a reservoir and then releases it to generate electricity. As of 2023, pumped hydro storage surpassed 50GW, making up over half of the country’s overall storage capacity.

The remaining half is comprised primarily of batteries and emerging technologies, such as compressed air, flywheel, as well as thermal energy.

These technologies, known as the “new type” energy storage in China, have seen rapid growth in recent years. Lithium-ion batteries dominate the “new type” sector.

The deployment of “new type” energy storage capacity almost quadrupled in 2023 in China, increasing to 31.4GW, up from just 8.7GW in 2022, according to data from the National Energy Administration (NEA).

This means that China surpassed its target of reaching 30GW of the “new type” energy storage by 2025 two years earlier than planned. The goal had been set by the NEA and China’s top economic planner the National Development and Reform Commission, under the 14th “five year plan”.

(Read Carbon Brief’s Q&A: What does China’s 14th ‘five year plan’ mean for climate change?)

Wang Shurui, researcher at the Institutes of Science and Development, Chinese Academy of Sciences, tells Carbon Brief:

“Advancements in the storage sector will enable a greater integration of renewable energy into the power grid, enhancing grid stability and helping accelerate China’s emissions reduction.”

High deployment, low usage

To promote battery storage, China has implemented a number of policies, most notably the gradual rollout since 2017 of the “mandatory allocation of energy storage” policy (强制配储政策), which is also known as the “new energy plus storage” model (新能源+储能).

Under the mandate, which applies in dozens of provinces, renewable companies are required to include a certain amount of energy storage capacity alongside new solar and wind generation projects, with the storage allocation rate ranging between 5% to 20%.

“This mandate is driving storage growth, as it pushes the build-out of large-scale energy storage stations,” says Guo Shiyu, climate and energy campaigner from Beijing-based thinktank Greenpeace East Asia. She tells Carbon Brief:

“The stations may not look huge separately, but they are mostly built on the generation side [alongside generating capacity], which are still quite big compared to industrial and commercial self-built storage [on the demand side].”

Cheaper costs led by technology innovation have helped the market’s increasing adoption of batteries too, Sun Yongping, researcher of emissions trading and vice-dean of the Institute of State Governance at Huazhong University of Science and Technology, tells Carbon Brief.

“An interviewee told me in a recent field study that the cost had fallen by over a half these years,” says Sun. “Local development is so fast that too often you can’t grasp it [in a] timely [way] just by looking at the statistical numbers,” he adds.

Despite its positive intentions, the mandatory storage policy has had unintended consequences. Notably, a significant portion of the installed storage capacity remains underutilised.

In regions covered by the State Grid – the government-owned operator that runs the majority of the country’s electricity transmission network – over four-fifths of the storage systems operate less than 10% of the time, with many used only once every two days, according to a Bloomberg report.

Another challenge, according to Guo, is the additional project costs and lack of effective incentives, as many storage facilities were built or rented to fulfil government requirements but went unused afterwards.

Both Guo and Sun argue that China needs a deeper level of electricity market pricing reforms to create incentives to use storage.

For example, having electricity prices that change at different hours could encourage the adoption of storage technologies in China, suggests Sun.

Guo says: “We still hope that each place deploys new energy storage according to its needs and understands its own situation instead of adopting a ‘one-size-fits-all’ approach.”

‘New driving force’ for economy

In 2024, the NEA named the energy storage sector as a “new driving force” for the country’s “new quality productive forces ” (NQPF). It could “propel the upstream and downstream industrial chains, promote scientific and technological innovation, talent training, investment and employment”, said the NEA.

(Read more on Carbon Brief’s Q&A: What China’s push for ‘new quality productive forces’ means for climate action.)

Regional governments are also exploiting the economic opportunity in energy storage. Guangdong, for example, aimed to make energy storage a “strategic pillar industry” of its economy by setting a target of 600bn yuan ($85bn) in annual revenue from the energy storage industry by 2025, eyeing the domestic and overseas market as the global energy transition deepens.

Meanwhile, Zhejiang, Anhui and Guangdong also have ambitious targets of installing local storage capacity of 3GW each by 2025, according to a recent tally by Greenpeace East Asia, based on government documents.

The booming market has attracted more than 100bn yuan ($14bn) since 2021.

But risks of market turmoil also exist. According to battery industrial information provider Gaogong Industrial Institute, last year China saw over 70,000 newly registered companies in the sector, which indicated that the market – already seeing fierce competition – may now be undergoing an “overcapacity” period.

Guo says this period of “overcapacity”, however, is rather “temporary”. She adds:

“There exists a temporary structural overcapacity, as the current expansion of new type energy storage is outpacing the market needs.

“However, if the regional governments could provide more policy support for the application of storage projects, this ‘excess capacity’ due to insufficient market demand could be avoided.”

The post Q&A: How China became the world’s leading market for energy storage appeared first on Carbon Brief.

Q&A: How China became the world’s leading market for energy storage

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For proof of the energy transition’s resilience, look at what it’s up against

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Al-Karim Govindji is the global head of public affairs for energy systems at DNV, an independent assurance and risk management provider, operating in more than 100 countries.

Optimism that this year may be less eventful than those that have preceded it have already been dealt a big blow – and we’re just weeks into 2026. Events in Venezuela, protests in Iran and a potential diplomatic crisis over Greenland all spell a continuation of the unpredictability that has now become the norm.

As is so often the case, it is impossible to separate energy and the industry that provides it from the geopolitical incidents shaping the future. Increasingly we hear the phrase ‘the past is a foreign country’, but for those working in oil and gas, offshore wind, and everything in between, this sentiment rings truer every day. More than 10 years on from the signing of the Paris Agreement, the sector and the world around it is unrecognisable.

The decade has, to date, been defined by a gritty reality – geopolitical friction, trade barriers and shifting domestic priorities – and amidst policy reversals in major economies, it is tempting to conclude that the transition is stalling.

Truth, however, is so often found in the numbers – and DNV’s Energy Transition Outlook 2025 should act as a tonic for those feeling downhearted about the state of play.

While the transition is becoming more fragmented and slower than required, it is being propelled by a new, powerful logic found at the intersection between national energy security and unbeatable renewable economics.

A diverging global trajectory

The transition is no longer a single, uniform movement; rather, we are seeing a widening “execution gap” between mature technologies and those still finding their feet. Driven by China’s massive industrial scaling, solar PV, onshore wind and battery storage have reached a price point where they are virtually unstoppable.

These variable renewables are projected to account for 32% of global power by 2030, surging to over half of the world’s electricity by 2040. This shift signals the end of coal and gas dominance, with the fossil fuel share of the power sector expected to collapse from 59% today to just 4% by 2060.

    Conversely, technologies that require heavy subsidies or consistent long-term policy, the likes of hydrogen derivatives (ammonia and methanol), floating wind and carbon capture, are struggling to gain traction.

    Our forecast for hydrogen’s share in the 2050 energy mix has been downgraded from 4.8% to 3.5% over the last three years, as large-scale commercialisation for these “hard-to-abate” solutions is pushed back into the 2040s.

    Regional friction and the security paradigm

    Policy volatility remains a significant risk to transition timelines across the globe, most notably in North America. Recently we have seen the US pivot its policy to favour fossil fuel promotion, something that is only likely to increase under the current administration.

    Invariably this creates measurable drag, with our research suggesting the region will emit 500-1,000 Mt more CO₂ annually through 2050 than previously projected.

    China, conversely, continues to shatter energy transition records, installing over half of the world’s solar and 60% of its wind capacity.

    In Europe and Asia, energy policy is increasingly viewed through the lens of sovereignty; renewables are no longer just ‘green’, they are ‘domestic’, ‘indigenous’, ‘homegrown’. They offer a way to reduce reliance on volatile international fuel markets and protect industrial competitiveness.

    Grids and the AI variable

    As we move toward a future where electricity’s share of energy demand doubles to 43% by 2060, we are hitting a physical wall, namely the power grid.

    In Europe, this ‘gridlock’ is already a much-discussed issue and without faster infrastructure expansion, wind and solar deployment will be constrained by 8% and 16% respectively by 2035.

    Comment: To break its coal habit, China should look to California’s progress on batteries

    This pressure is compounded by the rise of Artificial Intelligence (AI). While AI will represent only 3% of global electricity use by 2040, its concentration in North American data centres means it will consume a staggering 12% of the region’s power demand.

    This localized hunger for power threatens to slow the retirement of fossil fuel plants as utilities struggle to meet surging base-load requirements.

    The offshore resurgence

    Despite recent headlines regarding supply chain inflation and project cancellations, the long-term outlook for offshore energy remains robust.

    We anticipate a strong resurgence post-2030 as costs stabilise and supply chains mature, positioning offshore wind as a central pillar of energy-secure systems.

    Governments defend clean energy transition as US snubs renewables agency

    A new trend is also emerging in behind-the-meter offshore power, where hybrid floating platforms that combine wind and solar will power subsea operations and maritime hubs, effectively bypassing grid bottlenecks while decarbonising oil and gas infrastructure.

    2.2C – a reality check

    Global CO₂ emissions are finally expected to have peaked in 2025, but the descent will be gradual.

    On our current path, the 1.5C carbon budget will be exhausted by 2029, leading the world toward 2.2C of warming by the end of the century.

    Still, the transition is not failing – but it is changing shape, moving away from a policy-led “green dream” toward a market-led “industrial reality”.

    For the ocean and energy sectors, the strategy for the next decade is clear. Scale the technologies that are winning today, aggressively unblock the infrastructure bottlenecks of tomorrow, and plan for a future that will, once again, look wholly different.

    The post For proof of the energy transition’s resilience, look at what it’s up against appeared first on Climate Home News.

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    Post-COP 30 Modeling Shows World Is Far Off Track for Climate Goals

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    A new MIT Global Change Outlook finds current climate policies and economic indicators put the world on track for dangerous warming.

    After yet another international climate summit ended last fall without binding commitments to phase out fossil fuels, a leading global climate model is offering a stark forecast for the decades ahead.

    Post-COP 30 Modeling Shows World Is Far Off Track for Climate Goals

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    IMO head: Shipping decarbonisation “has started” despite green deal delay

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    The head of the United Nations body governing the global shipping industry has said that greenhouse gases from the global shipping industry will fall, whether or not the sector’s “Net Zero Framework” to cut emissions is adopted in October.

    Arsenio Dominguez, secretary-general of the International Maritime Organization, told a new year’s press conference in London on Friday that, even if governments don’t sign up to the framework later this year as planned, the clean-up of the industry responsible for 3% of global emissions will continue.

    “I reiterate my call to industry that the decarbonisation has started. There’s lots of research and development that is ongoing. There’s new plans on alternative fuels like methanol and ammonia that continue to evolve,” he told journalists.

    He said he has not heard any government dispute a set of decarbonisation goals agreed in 2023. These include targets to reduce emissions 20-30% on 2008 levels by 2030 and then to reach net zero emissions “by or around, i.e. close to 2050”.

      Dominguez said the 2030 emissions reduction target could be reached, although a goal for shipping to use at least 5% clean fuels by 2030 would be difficult to meet because their cost will remain high until at least the 2030s. The goals agreed in 2023 also included cutting emissions by 70-80% by 2040.

      In October 2025, a decision on a proposed framework of practical measures to achieve the goals, which aims to incentivise shipowners to go green by taxing polluting ships and subsidising cleaner ones, was postponed by a year after a narrow vote by governments.

      Ahead of that vote, the US threatened governments and their officials with sanctions, tariffs and visa restrictions – and President Donald Trump called the framework a “Green New Scam Tax on Shipping”.

      Dominguez said at Friday’s press conference that he had not received any official complaints about the US’s behaviour at last October’s meeting but – without naming names – he called on nations to be “more respectful” at the IMO. He added that he did not think the US would leave the IMO, saying Washington had engaged constructively on the organisation’s budget and plans.

      EU urged to clarify ETS position

      The European Union – along with Brazil and Pacific island nations – pushed hard for the framework to be adopted in October. Some developing countries were concerned that the EU would retain its charges for polluting ships under its emissions trading scheme (ETS), even if the Net Zero Framework was passed, leading to ships travelling to and from the EU being charged twice.

      This was an uncertainty that the US and Saudi Arabia exploited at the meeting to try and win over wavering developing countries. Most African, Asian and Caribbean nations voted for a delay.

      On Friday, Dominguez called on the EU “to clarify their position on the review of the ETS, in order that as we move forward, we actually don’t have two systems that are going to be basically looking for the same the same goal, the same objective.”

      He said he would continue to speak to EU member states, “to maintain the conversations in here, rather than move forward into fragmentation, because that will have a very detrimental effect in shipping”. “That would really create difficulties for operators, that would increase the cost, and everybody’s going to suffer from it,” he added.

      The IMO’s marine environment protection committee, in which governments discuss climate strategy, will meet in April although the Net Zero Framework is not scheduled to be officially discussed until October.

      The post IMO head: Shipping decarbonisation “has started” despite green deal delay appeared first on Climate Home News.

      IMO head: Shipping decarbonisation “has started” despite green deal delay

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