Mobile Battery Energy Storage Systems Market

The global mobile battery energy storage system market size was USD 1.45 Billion in 2025 and is expected to register a revenue CAGR of 21.1% during the forecast period. Market revenue growth is supported by demonstrated demand for diesel generator replacement across construction, events, and disaster response applications, with Moxion Power having delivered more than 400 mobile battery energy storage units to customers, including a multi-year partnership with equipment rental company Sunbelt Rentals, before the company's August 2024 Chapter 7 bankruptcy filing. Viridi acquired Moxion's 40,000-square-foot Richmond, California production facility in a bankruptcy auction for approximately USD 7 million and subsequently secured a USD 9.3 million grant from the California Energy Commission in April 2025 to expand operations at the site. Expion360, a publicly traded lithium-ion battery storage manufacturer, reported preliminary 2025 revenue of approximately USD 9.6 million, up from USD 5.6 million in 2024, and announced expansion into industrial and construction sector applications for its mobile and off-grid battery portfolio. These are some of the key factors driving revenue growth of the market.

Towable and trailer-mounted systems, skid-mounted and containerized systems, and portable rack or pallet systems are the principal commercial categories constituting the mobile battery energy storage system market, with construction, disaster response, and electric vehicle fleet charging support representing the leading near-term application channels. For instance, in January 2025, Sunbelt Rentals deployed hybrid battery and diesel generator systems built on Viridi's acquired Moxion-heritage hardware during the Los Angeles wildfires, powering command centers, canteens, and bathroom facilities at locations where several units were already staged in the area when emergency calls for temporary power came in.

However, Moxion Power's collapse illustrates the acute capital intensity and execution risk inherent to this business model: the company burned through more than USD 110 million in roughly 22 months despite marquee investors including Amazon's Climate Pledge Fund and Microsoft's Climate Innovation Fund, entering bankruptcy with only USD 201,980 remaining in its checking account and leaving unsecured creditors facing losses of 80 to 95 percent on their claims. Kore Power, the parent of mobile battery storage unit Nomad Transportable Power Systems, cancelled its planned 12 GWh KOREPlex cell gigafactory in Arizona in 2025 and was subsequently acquired by T1 Energy for approximately USD 32 million, after which Kore sold the Nomad subsidiary to Lixte Biotechnology in June 2026, illustrating how even the mobile storage units within larger battery manufacturers have changed ownership as parent companies restructure. These factors substantially limit mobile battery energy storage system market growth over the forecast period.

Based on deployment type, the global mobile battery energy storage system market is segmented into towable/trailer-mounted systems, skid-mounted/containerized systems, portable rack/pallet systems, and EV charging-integrated mobile units. The towable/trailer-mounted segment commands the largest revenue share because this format, exemplified by Moxion's plug-and-play MP-75 unit and Nomad's utility-scale power trailers, requires no specialized handling equipment beyond a standard truck hitch, allowing equipment rental companies and utilities to redeploy units across sites without the crane or forklift infrastructure that skid-mounted and containerized alternatives typically require.

Disaster response and emergency power segment is expected to register a rapid revenue growth rate in the global mobile battery energy storage system market over the forecast period. Sunbelt Rentals' deployment of Viridi's mobile battery systems during the January 2025 Los Angeles wildfires, including at locations where units were already staged in the area before emergency calls came in, demonstrates how utilities and rental companies are increasingly pre-positioning mobile battery inventory in wildfire and extreme-weather-prone regions rather than mobilizing units only after a disaster event begins.

• 01What is the global mobile battery energy storage system market size in 2025 and what CAGR is expected during 2026-2035?
• 02Why did Moxion Power file for Chapter 7 bankruptcy in August 2024 despite raising a USD 100 million Series D round?
• 03What assets did Viridi acquire from Moxion Power's bankruptcy auction, and for how much?
• 04What grant did Viridi secure from the California Energy Commission in April 2025?
• 05How were Viridi's mobile battery systems deployed during the January 2025 Los Angeles wildfires?
• 06What happened to Kore Power's Nomad Transportable Power Systems subsidiary in 2026?
• 07What preliminary 2025 revenue did Expion360 report, and what new applications is the company pursuing?
• 08What UL certification standard does Nomad's utility-scale mobile battery platform meet?
• 09Why does Viridi's asset-acquisition approach represent a structurally different business model than Moxion's original vertical integration strategy?
• 10Why might equipment rental companies with existing logistics networks prove a more durable distribution channel for mobile battery storage than dedicated manufacturers selling directly to end customers?

This report covers the global mobile battery energy storage system market across all major segments and geographic regions. Primary research combines panel conversations with industry experts and is cross-referenced against company annual reports and government agency data. All market size figures use 2025 as the base year with a 2026-2035 forecast period.