Climate News: Four Bright Spots in 2025
- energy storage industry has dramatically exceeded expectations, achieving a 35-gigawatt (GW) capacity target initially set for 2035 a full decade ahead of schedule.
- in 2015, the entire United States had installed less then a gigawatt of battery storage capacity.
- A key driver of this growth is the consistent decline in battery prices.
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Energy Storage Surpasses 2035 Goals, Driven by Falling Costs and Investor Interest
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The U.S. energy storage industry has dramatically exceeded expectations, achieving a 35-gigawatt (GW) capacity target initially set for 2035 a full decade ahead of schedule. This surge is fueled by declining battery prices and increasing investment in technologies beyond conventional lithium-ion, including flow batteries and other long-duration storage solutions.
Rapid Growth in Energy Storage Capacity
in 2015, the entire United States had installed less then a gigawatt of battery storage capacity. Industry stakeholders then set a goal of reaching 35 GW by 2035, a target considered aspiring at the time. However,the sector surpassed this milestone in 2023, and quickly reached 40 GW just a few months later, demonstrating the accelerating pace of deployment.
| Year | Installed Capacity (GW) |
|---|---|
| 2015 | < 1 |
| 2020 | 2.5 |
| 2023 | >40 |
Falling Battery Costs Drive Deployment
A key driver of this growth is the consistent decline in battery prices. According to BloombergNEF data,battery pack prices for both electric vehicles (EVs) and stationary storage reached record lows in 2023. Notably,battery packs specifically designed for grid storage experienced even faster price reductions than those used in EVs.
This cost reduction makes energy storage increasingly competitive with traditional power generation methods, enhancing its appeal to utilities, businesses, and homeowners. Lower costs also facilitate wider adoption of renewable energy sources like solar and wind, which often require storage solutions to address intermittency issues.
Beyond Lithium-Ion: Exploring New Technologies
While lithium-ion batteries currently dominate the energy storage market,significant research and growth efforts are focused on alternative technologies. These include flow batteries, solid-state batteries, and other long-duration storage solutions. These technologies are especially promising for providing constant power, a capability where wind and solar energy currently fall short.
Flow batteries, for example, offer advantages in terms of scalability and lifespan, making them well-suited for grid-scale applications.Solid-state batteries promise higher energy density and improved safety compared to traditional lithium-ion batteries. Investment in these emerging technologies is crucial for diversifying the energy storage landscape and addressing specific grid needs.