China Market Overview
Robust Growth in ESS Tender Activity – Structural Drivers Strengthening
China’s energy storage system (ESS) market continued to exhibit strong structural momentum throughout the first nine months of the year. Tender volumes reached 140 GWh, representing a 21% year-on-year increase, and signaling both market confidence and long-term demand visibility.
The tendering surge is not merely a result of cyclical investment; rather, it reflects deep, systemic transformation within the national power sector. As China advances its “new power system” initiative—characterized by high penetration of wind and solar—energy storage becomes indispensable in balancing supply and demand, managing intermittency, and stabilizing grid frequency.
Several structural drivers continued to reinforce the trend:
- Renewable build-out accelerating
Provincial and national mandates for renewable energy projects increasingly require synchronized deployment of storage capacity. Many solar and wind projects must now configure storage systems with power ratios between 10–20% and durations of 2–4 hours to qualify for grid connection.
- Grid reliability requirements rising
As renewable curtailment challenges become more common in solar-rich regions (e.g., Northwest China), grid operators are increasing procurement of energy storage for ancillary services such as frequency regulation and peak shaving.
- Enhancing power system flexibility
With the retirement of older coal units and reduced reliance on traditional thermal dispatch, energy storage plays a key role in ensuring system flexibility across provinces with high load variability.
- Declining cost of LFP batteries
Lithium iron phosphate (LFP) batteries—already dominant in Chinese ESS markets—have benefited from significant price reductions and supply chain optimization. This cost competitiveness has lowered project capital expenditures and improved the economics of ESS deployments.
The tender momentum indicates the industry is transitioning into a multi-year expansion phase, supported by supportive policy frameworks, maturing technology, and increasing commercial adoption.
Filing Growth in Sichuan – A Major Future Deployment Signal
Sichuan Province’s filing volume—7.02 GW / 16.45 GWh in August alone, with a 447% month-on-month spike—is one of the strongest indicators of future deployment activity nationwide. Such growth is seldom observed in a mature market, making the surge particularly meaningful.
Key reasons for Sichuan’s filing boom:
- Hydropower-dominant energy structure
Sichuan’s large hydropower base produces seasonal output variations. Energy storage complements hydropower by absorbing excess capacity during wet seasons and providing firming support during dry seasons.
- Growing interprovincial export obligations
Sichuan supplies power to multiple neighboring regions. Energy storage enhances the quality and stability of long-distance transmission through UHV channels.
- Preparation for large-scale renewable integration
The province is rapidly expanding solar and wind projects, which require storage to mitigate real-time fluctuations and maintain grid stability.
- Improved provincial-level incentive systems
Local authorities have introduced mechanisms that encourage early project filings to secure priority grid connection and policy support.
This strong filing activity is expected to convert into tangible installations between 2026 and 2027, contributing significantly to China’s medium-term ESS growth trajectory. It also signals increasing decentralization in ESS deployment—from coastal manufacturing hubs to inland provinces with strong renewable resources.
United States Market Dynamics
Impact of the IRA Extension – Long-Term Investment Certainty
The unprecedented extension of the standalone Investment Tax Credit (ITC) from 2032 to 2036 dramatically reshapes the investment landscape for U.S. energy storage. This four-year extension is expected to:
- Stimulate multi-year planning and contracting
Developers can now commit to large-scale projects with confidence that federal incentives will remain available through the full project cycle.
- Increase project bankability
More stable tax credit timelines reduce financing risk, lowering the cost of capital for developers and improving project economics.
- Support diversification of ESS technologies
While lithium remains dominant, the extended ITC encourages R&D and early adoption of long-duration storage (LDS) technologies—such as flow batteries, compressed air storage, and thermal batteries—critical for achieving weekly or seasonal balancing.
- Strengthen global supply chain engagement
Chinese manufacturers and integrators are increasingly tailoring products for U.S. compliance (UL9540A, UL1973, UL9540, NFPA855). With extended tax credits, demand for cost-competitive imports is expected to increase, even amid ongoing discussions around tariffs and trade barriers.
- Drive booms in solar-plus-storage
Combined solar energy storage lifepo4 battery installations are projected to dominate new capacity additions in states like California, Arizona, Nevada, and Texas, where project economics are particularly favorable.
Overall, the IRA provides the U.S. energy storage industry with the policy stability required to scale from tens of gigawatt-hours to hundreds of gigawatt-hours in the next decade.
Rapid Utility-Scale ESS Growth – U.S. on Track for Record Installations
Utility-scale ESS remains the fastest-growing segment of the U.S. storage market.
Key data points:
August additions: 1.09 GW (+13% YoY)
2025 cumulative Jan–Aug: 8.19 GW (+35% YoY)
2025 full-year forecast: 18.4 GW (+76% YoY)
This growth is driven by:
- Increasing renewable penetration
Solar and wind developers increasingly integrate storage to reduce curtailment and maximize revenue under volatile market conditions.
- Market signals & ancillary service incentives
High peak power prices, particularly in ERCOT (Texas), have made 1–2-hour storage projects highly profitable. CAISO (California) continues to expand capacity markets supporting multi-hour storage.
- Strengthened grid resilience requirements
Extreme weather events—heatwaves, storms, wildfires—highlighted the critical need for grid flexibility and backup capacity.
- Ongoing improvements in permitting and interconnection
Federal and state-level reforms have accelerated the approval process for large ESS facilities.
- Technological standardization
More integrators and EPC firms now specialize in utility-scale ESS, reducing project risk and improving deployment speed.
If EIA forecasts materialize, the U.S. may soon close the gap with China in annual ESS installations, establishing itself as a dual-engine growth market worldwide.
Europe Market Performance
Utility-Scale Storage Expands Despite Economic Pressures
Europe’s ESS landscape is increasingly dominated by utility-scale deployments, supported by energy transition commitments, rising renewable shares, and grid modernization needs.
Germany’s January–September installation data—2.3 GW / 3.8 GWh, with 775 MWh utility-scale growth (+88% YoY)—illustrates significant grid-focused investment.
Drivers of utility-scale expansion:
- Renewable curtailment reduction
Wind curtailment levels in Northern Europe have surged, creating economic incentives for co-located storage.
- Energy price volatility
The European power market has seen unprecedented daily price swings, making arbitrage highly profitable.
- Increasing reliance on ancillary service markets
Frequency containment reserves (FCR), automatic frequency restoration reserves (aFRR), and other balancing markets are becoming lucrative revenue streams for storage operators.
- Transmission grid resilience needs
Aging infrastructure, coupled with cross-border power flow complexity, requires greater grid flexibility delivered through ESS.
- Supportive regulatory frameworks
Countries such as the UK, Spain, and Italy are introducing multi-year policy frameworks encouraging long-duration storage deployment.
Europe’s utility-scale ESS growth trajectory is expected to strengthen further as the region deepens its energy independence strategy and integrates more renewable power.
Residential Storage Weakens – Shift Toward Economic Rationalization
In contrast, Europe’s residential ESS market is undergoing a substantial slowdown. German residential installations fell 25% YoY to 2,868 MWh, signaling a clear turn in consumer behavior.
Reasons for the decline:
- Higher borrowing costs
Elevated interest rates have made financing home PV + storage systems more expensive, slowing household adoption.
- Reduction in subsidies
Government incentive reductions decreased the financial attractiveness of residential ESS.
- Rooftop PV growth slowdown
With lower solar installation growth, the attached residential ESS market naturally declines.
- Shift in consumer priorities
Homeowners increasingly favor energy efficiency upgrades (insulation, heat pumps) over battery investments.
- Grid tariff reforms
In some countries, feed-in tariff or net metering reform reduced the economic return of behind-the-meter storage.
C&I storage remains flat
C&I deployments reached 190 MWh (flat YoY). While growth is stagnant, demand remains stable due to:
electricity cost management needs,
backup power requirements,
EV charging load balancing, and
sustainability commitments.
Europe’s ESS market transformation reflects a broader shift from household-driven subsidy markets toward commercially driven grid-scale deployments aligned with long-term energy transition goals.
