Grid battery storage is expanding across utility-scale, behind-the-meter and hybrid projects, but the figures describe different populations. The clearest comparisons separate power capacity in GW or MW from stored energy in GWh or MWh, and distinguish observed deployment from modeled assumptions and forecasts.
Key Grid Battery Storage Statistics
The most broadly useful figures span global deployment, U.S. projects, operating assumptions and investment:
- In 2023, more than 85 GW of battery storage was in use in the global power sector.
- In 2023, global battery storage capacity additions reached 42 GW across utility-scale, behind-the-meter, mini-grid and solar-home-system storage.
- In 2023, 65% of global power-sector battery-storage additions were utility-scale and 35% were behind-the-meter.
- In 2023, lithium iron phosphate batteries represented 80% of new battery storage worldwide.
- In 2024, U.S. utility-scale battery storage capacity exceeded 26 GW based on preliminary January 2025 inventory data.
- In 2024, U.S. generators added 10.4 GW of utility-scale battery storage.
- In 2025, developers reported plans for 19.6 GW of new U.S. utility-scale battery storage.
- In November 2023, California had 7.3 GW and Texas had 3.2 GW of installed battery storage in the cited EIA inventory.
- At the end of 2023, U.S. utilities reported 575 operating batteries with 15,814 MW of collective capacity.
- In 2024 ATB modeling, NREL used a default four-hour duration for utility-scale batteries.
- In the same 2024 model, utility-scale batteries were assigned 85% round-trip efficiency.
- In 2023, 52 U.S. PV-plus-battery hybrid plants achieved commercial operation.
- Those 2023 U.S. hybrid plants included 3.0 GW of battery power capacity and 10.5 GWh of battery energy capacity.
- Between 2010 and 2023, average battery costs fell 90% globally across battery applications.
- Global battery-storage investment was forecast at $54 billion in 2024.
- In the IEA transition outlook, global energy storage capacity must reach 1,500 GW by 2030, a sixfold increase.
- In the IEA Net Zero scenario, batteries reach 1,200 GW by 2030 and account for 90% of the increase in storage.
Contents
- Global grid battery storage capacity and growth
- Battery storage deployment trends and chemistry
- U.S. grid battery storage data and planned capacity
- Grid battery applications, duration and performance
- Grid battery storage costs, efficiency and lifetime
- Battery storage investment and the 2030 outlook
Global Grid Battery Storage Capacity and Growth
The International Energy Agency reported more than 85 GW of battery storage in use in the global power sector in 2023. This population includes power-sector storage broadly, rather than only utility-scale systems. IEA, Batteries and Secure Energy Transitions: Executive summary
Global battery-storage capacity additions reached 42 GW in 2023. The total combines utility-scale, behind-the-meter, mini-grid and solar-home-system storage, so it should not be treated as a utility-only series. IEA, Batteries and Secure Energy Transitions: Executive summary
| Global measure | Period | Reported figure | Scope |
|---|---|---|---|
| Battery storage in use | 2023 | More than 85 GW | Global power sector |
| Battery-storage additions | 2023 | 42 GW | Utility-scale, behind-the-meter, mini-grid and solar-home-system storage |
| Addition mix | 2023 | 65% utility-scale; 35% behind-the-meter | Global power-sector additions |
The 65% utility-scale and 35% behind-the-meter split applies to the IEA’s power-sector addition total. Separately, more than 2,000 GWh of lithium-ion battery capacity was added worldwide during approximately 2019–2023, but that figure covers all lithium-ion applications, not grid storage alone. IEA, Batteries and Secure Energy Transitions: Status of battery demand and supply
Total batteries used in the global energy sector exceeded 2,400 GWh in 2023, four times the 2020 level. The energy-sector total includes electric vehicles and other uses, and annual energy-sector lithium-ion demand exceeded 90% of total demand in 2023; neither measure is a grid-storage share. IEA, Batteries and Secure Energy Transitions: Status of battery demand and supply
Battery Storage Deployment Trends and Chemistry
Utility-scale projects were the larger part of global power-sector additions in 2023, while battery chemistry shifted toward lithium iron phosphate. IEA reported that lithium iron phosphate batteries represented 80% of new battery storage in 2023; this is a new-storage chemistry share, not the chemistry of the entire installed fleet. IEA, Batteries and Secure Energy Transitions: Executive summary
- Electric vehicles accounted for more than 90% of global energy-sector battery use in 2023, making EVs a comparison population rather than a measure of grid batteries.
- Global EV battery deployment exceeded 750 GWh in 2023, and EV battery deployment increased 40% from 2022 to 2023.
- Lithium iron phosphate batteries reached 40% of global EV sales in 2023; that figure concerns EV sales, not grid projects.
These comparisons help define the market boundary. The IEA also estimated that China held nearly 85% of global battery-cell production capacity in the 2023–2024 report context, while China, Europe and the United States together accounted for more than 90% of global battery investment in 2023. IEA, Batteries and Secure Energy Transitions: Status of battery demand and supply
Global investment in EV batteries and battery storage totaled about $150 billion in 2023, according to the same IEA status assessment. This combines EV-battery and storage investment, so it is not a grid-storage-only total. IEA, Batteries and Secure Energy Transitions: Status of battery demand and supply
U.S. Grid Battery Storage Data and Planned Capacity
U.S. utility-scale battery capacity exceeded 26 GW in 2024, based on preliminary January 2025 generator-inventory data. EIA also reported that U.S. generators added 10.4 GW during 2024, while batteries represented 2% of the 1,230 GW U.S. utility-scale generating fleet. EIA, U.S. battery capacity increased 66% in 2024
| U.S. measure | Period | Figure | Status or scope |
|---|---|---|---|
| Utility-scale battery capacity | 2024 | More than 26 GW | Preliminary inventory |
| Utility-scale additions | 2024 | 10.4 GW | Preliminary inventory |
| New utility-scale plans | 2025 | 19.6 GW | Developer-reported plans |
| Utility-scale batteries as share of generating fleet | 2024 | 2% of 1,230 GW | Nameplate comparison |
Developers reported plans for 19.6 GW of new U.S. utility-scale battery storage in 2025. An earlier EIA forecast placed U.S. utility-scale capacity above 30 GW by the end of 2024, but that projection was contingent on projects entering service as planned. EIA, U.S. battery capacity increased 66% in 2024
In the November 2023 EIA inventory, California had 7.3 GW of installed battery storage and Texas had 3.2 GW, while the remaining states together had about 3.5 GW. At the end of 2023, EIA-860 data recorded 575 operating batteries with 15,814 MW of collective capacity; the capacity is nameplate power. EIA, Utilities report batteries are most commonly used for arbitrage and grid stability
The earlier EIA pipeline expected more than 300 U.S. utility-scale battery projects to come online by 2025, with about 50% of planned capacity in Texas. Utilities also reported plans for 35,953 MW of battery capacity through 2028; these are pipeline forecasts, not commissioned capacity. EIA, Utilities report batteries are most commonly used for arbitrage and grid stability
Grid Battery Applications, Duration and Performance
Grid batteries can provide power capacity without storing the same amount of energy for every duration. EIA cited the Moss Landing facility in California as the largest operating U.S. battery facility in its report context, with 750 MW of power capacity; its MW figure does not specify stored energy in MWh. EIA, Utilities report batteries are most commonly used for arbitrage and grid stability
NREL’s 2024 Annual Technology Baseline models utility-scale batteries at 2-, 4-, 6-, 8- and 10-hour durations, with four hours as the default modeled duration. These are model cases, not a census of installed projects. NREL, Utility-Scale Battery Storage | Electricity | 2024 ATB
| NREL 2024 ATB model case | Assumption |
|---|---|
| Default utility-scale duration | 4 hours |
| 4-hour battery, one cycle per day | 16.7% expected capacity factor |
| 2-hour battery, one cycle per day | 8.3% expected capacity factor |
| Round-trip efficiency | 85% |
| Rated lifetime | 15 years |
The 16.7% and 8.3% capacity-factor values assume approximately one cycle per day and ignore deviations in actual dispatch. NREL’s 85% round-trip efficiency means useful output divided by useful input, while actual projects vary.
The 15-year rated lifetime includes augmentation to maintain rated capacity in the model. NREL, Utility-Scale Battery Storage | Electricity | 2024 ATB
Berkeley Lab counted 52 U.S. PV-plus-battery hybrid plants reaching commercial operation in 2023. Those plants represented 5.3 GWAC of PV capacity, 3.0 GW of battery power capacity and 10.5 GWh of battery energy capacity; the figures include greenfield projects and retrofits and do not represent the entire U.S. battery market. Berkeley Lab, Utility-Scale Solar 2024 Edition: Executive Summary
Grid Battery Storage Costs, Efficiency and Lifetime
Average battery costs fell 90% between 2010 and 2023, according to the IEA. The comparison spans battery applications and is not a measure of installed utility-scale project costs. IEA, Batteries and Secure Energy Transitions: Status of battery demand and supply
NREL models fixed operation and maintenance at 2.5% of capital cost per kW for utility-scale battery storage, with variable O&M modeled as zero. Its representative 60-MW, four-hour system uses 240 MWh of usable storage, a model configuration rather than a market-wide statistic. NREL, Utility-Scale Battery Storage | Electricity | 2024 ATB
| NREL CAPEX scenario for a 60-MW, 4-hour BESS | 2022–2035 reduction | 2035–2050 reduction |
|---|---|---|
| Conservative | 18% | 4% |
| Moderate | 37% | 22% |
| Advanced | 52% | 31% |
For the 2022–2035 period, NREL’s conservative, moderate and advanced scenarios imply average annual CAPEX reductions of 1.4%, 2.9% and 4.0%, respectively. These are scenario averages derived from reviewed cost projections, not observed annual price changes or quoted project prices. NREL, Utility-Scale Battery Storage | Electricity | 2024 ATB
Battery Storage Investment and the 2030 Outlook
Global investment in battery storage was forecast to exceed $50 billion in 2024, with the IEA’s more specific estimate at $54 billion. This is a forecast estimate rather than audited final expenditure. IEA, World Energy Investment 2024: Overview and key findings
In 2023, for every dollar invested in battery storage in advanced economies and China, only one cent was invested in other emerging and developing economies. The regional grouping follows IEA definitions and compares investment flows, not installed capacity. IEA, World Energy Investment 2024: Overview and key findings
Global energy investment was expected to exceed $3 trillion in 2024, including about $2 trillion for clean-energy technologies and infrastructure. Those context totals cover technologies beyond battery storage. IEA, World Energy Investment 2024: Overview and key findings
The IEA transition outlook says global energy-storage capacity must increase sixfold to 1,500 GW by 2030. The requirement includes battery and non-battery storage, while the IEA Net Zero scenario assigns batteries 90% of the increase and reaches 1,200 GW by 2030, described as a 14-fold increase from the scenario’s contemporary level. IEA, Batteries and Secure Energy Transitions: Status of battery demand and supply
An earlier IEA outlook expected power-sector battery-storage investment to approach $40 billion in 2023. That figure is a prior-year outlook estimate, not a final audited total. IEA, World Energy Investment 2024: Overview and key findings