Sodium-ion grid storage factory plans in the United States took a major step forward on July 9, 2026. Peak Energy announced that it will build the nation’s first factory dedicated fully to Sodium-ion Battery systems for the power grid. The company chose Sacramento, California, after a nationwide site search. Moreover, the project aims to deliver 4 gigawatt-hours of annual battery production, which Peak Energy says can support electricity needs for nearly 4 million homes.
Sodium-ion grid storage factory will rise in Sacramento
Peak Energy selected Sacramento’s Metro Air Park for the new manufacturing site. The facility will span 183,000 square feet. In addition, it will focus on assembling sodium-ion energy storage systems for utility-scale use. This makes it the first U.S. production site devoted entirely to sodium-ion grid storage manufacturing.
The company said the plant will serve utilities that face fast-rising electricity demand. For example, power use continues to grow as data centers and artificial intelligence infrastructure expand. Therefore, utilities need more large-scale storage to balance supply and demand across the grid.
Sodium-ion grid storage factory targets 4 GWh output
Peak Energy designed the plant for high-volume output from the start. The factory will produce 4 gigawatt-hours of battery systems each year. According to the company, that annual capacity is enough to supply electricity to nearly 4 million households. As a result, the Sacramento site could become an important source of domestic grid storage equipment.
The company also shared a timeline for production. Peak Energy expects its passively cooled sodium-ion battery energy storage systems to enter production and begin shipments in the first quarter of 2027. Furthermore, the company said its systems can reduce energy storage costs by 20% and deliver 99% guaranteed uptime.
Why Peak Energy chose Sacramento
Peak Energy did not choose Sacramento by chance. Instead, the company ran a competitive nationwide site evaluation before making its final decision. It reviewed labor access, logistics, and policy support. After that process, Sacramento emerged as the preferred location.
The company highlighted several local advantages. First, the region offers access to industrial workers needed for assembly and technical operations. Second, Sacramento provides strong logistics links to western power markets. Third, California offered economic development support that improved the project’s outlook.
Peak Energy said its California expansion received a $10.5 million CalCompetes tax credit in May 2026. That support adds to the financial case for building the factory in the state.
Sodium-ion grid storage factory brings jobs and investment
The project carries an initial capital expenditure of $71 million. Over the next 18 months, Peak Energy expects construction and equipment installation to create 239 local jobs. These roles will support assembly, logistics, and technical operations. In addition, the project could boost nearby suppliers, freight companies, and service businesses.
Peak Energy CEO and co-founder Landon Mossburg said the plant shows that the United States can scale advanced energy technology at home. He added that the Sacramento facility will support American energy innovation, lower electric bills, and create high-quality jobs.
Sodium-ion grid storage factory supports utility demand
The market opportunity for the new plant looks strong. Peak Energy said it already has 6 gigawatt-hours of advance product orders under contract from industrial buyers. That early demand suggests strong interest in sodium-ion storage for grid applications. Also, it gives the company an initial customer base before the plant starts shipping products.
The systems use sodium-ion chemistry as an alternative to Lithium-ion installations in stationary storage. Peak Energy designed the hardware with a passive thermal approach. In other words, the systems do not rely on moving parts such as fans or liquid pumps for cooling. Consequently, the design can reduce maintenance needs and lower long-term operating costs.
From pilot project to mass production
The Sacramento factory marks a clear shift for Peak Energy. Previously, the company demonstrated its technology at lower volume. Now, it is moving into standardized and automated mass production. That transition matters because utilities need dependable and repeatable supply at scale.
In August 2025, Peak Energy completed its first operational test by connecting a sodium-ion platform directly to the U.S. power grid. The pilot used a sodium-iron phosphate pyrophosphate chemistry. At that time, the company said it was the largest operational deployment of that chemistry class.
Now, with a commercial factory planned and advance orders in hand, Peak Energy is positioning its sodium-ion systems as a scalable grid storage option. If construction stays on schedule, Sacramento will become a key hub for U.S. sodium-ion battery manufacturing in 2027.
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