Global battery storage targets lag COP29 pledge by 45 percent

Solmar Insights

National energy storage targets compiled worldwide now stand at 822 GW for 2030, falling 45 percent short of the 1,500 GW total committed by 74 countries at COP29. Despite a near-tripling of official goals since 2024 and record annual battery deployments, leading markets such as the United States have yet to raise targets significantly to close the commitment gap.

COP29 commitments versus current targets

The COP29 summit in November 2024 marked an international effort to accelerate global energy storage, with 74 nations jointly pledging to reach 1,500 GW of capacity by 2030. According to energy think tank Ember, national policies have since increased their stated ambitions from 284 GW pre-COP29 to 822 GW, a 190 percent jump. However, this still leaves a major gap of 678 GW between national targets and the collective global commitment.

This gap persists even in a market environment where battery storage deployment has scaled rapidly. For institutional developers and investors, the shortfall signals misalignment between international climate targets and regulatory follow-through at the national level, especially in major solar and wind markets.

Market participants now look for policy updates, particularly from the largest contributors such as China, the United States, and the European Union, whose pledges play an outsized role in global storage buildout.

Storage buildout trajectory and cost developments

Annual global storage installations have hit historic highs, with 118 GW of new capacity added in 2025 alone, a 40 percent increase year-over-year. Batteries made up 108 GW of these new installations, accounting for most incremental growth. China led with 54 percent of all new storage installations in 2025, while the United States contributed 16 percent, underscoring their leadership in global deployment.

Ember estimates that if recent installation rates continue through 2030, the world could reach about 1,020 GW cumulative storage, still significantly below the COP29 pledge, but exceeding official national targets by roughly one quarter. Average annual system costs have continued to fall, with about 20 percent reductions per year over the last decade, supporting continued expansion.

For developers and buyers, declining costs and accelerating deployment present market opportunities, but official targets set the framework for permitted projects and contracted capacity, shaping long-term investment decisions.

Major markets: Where ambitions have changed

Much of the increased ambition in national storage targets is concentrated in China and the European Union. China has raised its 2030 target to 460 GW (including 300 GW of newer battery-based storage and 160 GW of pumped hydro), while the EU has formally adopted a regional target of 200 GW. These two jurisdictions alone comprise over 80 percent of global national targets for storage identified by Ember.

Elsewhere, only incremental changes have occurred. Australia now projects 33 GW by 2030, and Vietnam has announced a 22.3 GW target split between batteries and pumped hydro. Most other large-scale solar and wind markets, however, have not meaningfully adjusted their national targets since COP29, leaving further room for additional policy-driven growth.

The United States, though a leading market in incremental deployments, has not substantially adjusted its 2030 storage target in this reporting, pointing to uncertainty in federal or state-level policy signals and the related permitting and interconnection processes governing utility-scale storage.

Meeting targets through continued momentum

To meet existing national targets, a sustained average of 78 GW of additional capacity would need to be deployed each year from 2026 to 2030. This is significantly less than the 118 GW installed in 2025 and less than annual installations in 2024, indicating that current deployment rates are already strong enough to achieve existing mandates. Analysts at Ember highlight this gap as evidence that governments can raise their official targets without risking feasibility.

However, there is a technical caveat: national storage targets are typically specified in gigawatts, which indicate power (the maximum charge/discharge rate), but not storage duration or total energy shifted. This means targets do not directly translate to the system’s ability to time-shift renewable output to periods of higher demand, a nuance important to ISOs, grid operators, and capacity market participants looking to align storage with reliability and load balancing needs.

This distinction matters as the service each storage system delivers depends not just on power but also on its duration in megawatt-hours or gigawatt-hours. Market actors must scrutinize not only the aggregate power targets but also regional storage duration requirements, which may become central in procurement, especially in ISO/RTO markets with high solar and wind penetration.

Implications for US energy market stakeholders

US buyers, developers, and investors face a market where battery storage deployment remains robust but policy targets are static, potentially stalling longer-term pipeline planning. The discrepancy between international and national ambitions may result in market volatility, especially if future regulatory reviews trigger abrupt target increases for compliance with UN climate commitments.

The continued fall in system costs could drive more merchant procurement and short-duration storage investment, but grid operators and power purchasers must remain alert to the gap between nameplate capacity commitments and actual delivered energy. Players active in the storage sector will need to monitor policy signals from federal and state bodies for clues on new mandates or financial incentives that might close the gap to COP29 goals, and adjust siting, interconnection, and contracting priorities accordingly.

Reporting via the original publisher