United States Supercapacitor Market by Product Type (Double-Layer Capacitor, Pseudo capacitors, Hybrid Capacitors), Module Type (Less Than 10 Volts Modules, 10 Volts to 25 Volts Modules, 25 Volts to 50 Volts Modules, 50 Volts to 100 Volts Modules, and Above 100 Volts Modules), Material (Activated carbon, Carbide Derived Carbon, Carbon Aerogel, and Others), and Application (Automotive, Industrial, Energy, Consumer Electronics, and Aerospace & Defense)), By Region, Competition, Forecast and Opportunities, 2021-2031F

Forecast Period	2027-2031
Market Size (2025)	USD 387.89 Million
CAGR (2026-2031)	16.51%
Fastest Growing Segment	Double-Layer Capacito
Largest Market	South
Market Size (2031)	USD 970.26 Million

Market Overview

The United States Supercapacitor Market will grow from USD 387.89 Million in 2025 to USD 970.26 Million by 2031 at a 16.51% CAGR. Supercapacitors, defined as high-power energy storage devices capable of rapid charge and discharge cycles, serve as a critical bridge between conventional capacitors and batteries by offering superior power density. The United States market is sustained by structural drivers such as the electrification of heavy-duty transport and the necessity for grid frequency regulation to manage renewable energy intermittency, which differ significantly from transient consumption trends. According to the American Clean Power Association, in 2025, the domestic energy storage sector was projected to install 15 gigawatts of new capacity, reflecting the escalating demand for responsive power technologies where supercapacitors play an essential role.

Nevertheless, market proliferation encounters a substantial challenge regarding energy density, which remains significantly lower in supercapacitors than in commercial lithium-ion counterparts. This physical limitation restricts their application in scenarios requiring long-duration energy discharge, effectively confining them to short-term power management roles and impeding their ability to compete as standalone primary energy sources.

Key Market Drivers

Accelerating Adoption of Electric and Hybrid Vehicle Regenerative Braking Systems is a primary force propelling the United States Supercapacitor Market. Unlike conventional lithium-ion batteries, which degrade under the high-current spikes generated during frequent braking and acceleration, supercapacitors offer the exceptional power density required to capture and redeploy this kinetic energy efficiently. This capability is increasingly critical as automakers seek to extend range and improve the energy efficiency of electrified fleets without oversizing expensive battery packs. The momentum in this sector is evident in recent sales figures which underscore the growing installed base for these components. According to the Alliance for Automotive Innovation, June 2025, in the 'Get Connected Electric Vehicle Report Q1 2025', automakers sold 374,841 electric vehicles in the United States during the first quarter of 2025 alone, creating a substantial and expanding platform for regenerative braking technologies.

Expanding Integration of Supercapacitors in Renewable Energy Grid Stabilization further solidifies market demand, addressing the intermittency challenges posed by modern power generation. As the grid becomes heavily reliant on variable sources like solar and wind, supercapacitors are deployed to provide millisecond-response frequency regulation and voltage support that batteries cannot sustain over millions of cycles. This structural shift towards renewables is creating an urgent need for such rapid-response storage assets. According to the U.S. Energy Information Administration, February 2025, in the 'Preliminary Monthly Electric Generator Inventory', solar and battery storage projects were projected to account for 81% of all new utility-scale generating capacity additions in 2025, significantly increasing the volatility that supercapacitors are designed to manage. Reflecting the sector's maturation to meet these diverse needs, prominent market consolidation has occurred; according to Batteries International, in 2025, the major energy storage firm Clarios acquired the supercapacitor manufacturer Maxwell Technologies to strengthen its high-power solutions portfolio.

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Key Market Challenges

The low energy density inherent in supercapacitors constitutes a severe technical bottleneck that impedes their adoption as a primary energy storage source in the United States. Unlike lithium-ion batteries, which can sustain energy discharge for multiple hours, supercapacitors are physically restricted to delivering power for only seconds or minutes. This limitation forces the technology into a narrow market segment focused on short-duration power quality and rapid frequency response, effectively locking it out of the lucrative long-duration energy storage sector that currently drives the majority of industry investment.

Consequently, the market preference has decisively shifted toward technologies that offer higher energy density to manage renewable intermittency over longer timeframes. This trend is substantiated by recent deployment figures which favor prolonged discharge capabilities. According to the American Clean Power Association, in the third quarter of 2025, the utility-scale storage segment installed 4.6 gigawatts of new capacity. The overwhelming majority of this capacity utilizes high-density battery chemistries, demonstrating that while the demand for storage is surging, the specific requirement for extended duration limits the competitive scope of supercapacitors to niche auxiliary functions.

Key Market Trends

The Emergence of Hybrid Supercapacitor Systems, particularly lithium-ion capacitors, represents a pivotal shift addressing the critical energy density gap in the United States market. By combining the intercalation mechanism of lithium-ion batteries with the electrostatic adsorption of supercapacitors, these hybrid architectures deliver the longevity required for high-cycle environments while significantly improving energy storage capacity. This technological evolution is increasingly driven by the booming artificial intelligence sector, where facilities require robust solutions to manage extreme power transients that traditional batteries cannot sustain. According to EE Power, January 2025, the manufacturing partner Flex is slated to begin production of its hybrid supercapacitor-based energy storage system in the first half of 2025, specifically engineered to mitigate power spikes in AI data centers.

The Integration of Graphene and Carbon Nanotubes for Enhanced Energy Density is simultaneously redefining electrode performance limitations by maximizing surface area and electrical conductivity. Unlike activated carbon, these advanced nanomaterials enable the production of cells that offer higher power throughput and operate without reliance on scarce raw materials like cobalt, aligning with domestic supply chain resilience goals. This material innovation is rapidly transitioning from research to commercial scale, supporting applications ranging from heavy transportation to hyperscale computing infrastructure. According to Batteries International, December 2025, Skeleton Technologies opened a new manufacturing facility designed for an annual output of up to 12 million graphene-based cells, a portion of which is allocated to supply major United States hyperscalers for AI infrastructure.

Segmental Insights

The double-layer capacitor segment represents the fastest-growing category within the United States supercapacitor market due to rising demand for efficient energy storage in the automotive sector. This growth is accelerated by the widespread adoption of electric vehicles, where these components are essential for regenerative braking systems. Additionally, grid modernization projects supported by the United States Department of Energy favor double-layer capacitors for their ability to stabilize power flow through rapid charging cycles. Their high power density and durability make them highly suitable for industrial applications requiring reliable bursts of energy.

Regional Insights

The South US holds a dominant position in the United States supercapacitor market, driven by a convergence of expanding industrial and energy sectors. This region benefits from a dense concentration of aerospace and defense manufacturers, coupled with a surging electric vehicle production corridor. States such as Texas and Florida are pivotal, leveraging supercapacitors for essential grid stabilization and the integration of renewable resources like solar and wind power. Additionally, infrastructure modernization projects supported by the U.S. Department of Energy reinforce the area's reliance on durable energy storage, solidifying the South as the primary hub for market expansion.

Recent Developments

• In February 2025, Capacitech Energy entered into a strategic partnership with the Orlando Utilities Commission to deploy its innovative cable-based supercapacitor technology in a microgrid project. This collaboration involved the installation of the company's flexible PowerLink energy storage system, which was designed to be integrated into existing infrastructure such as power lines to save space and improve grid resiliency. The project aimed to demonstrate the scalability and efficiency of distributed energy storage solutions in stabilizing renewable energy integrations. This initiative marked a significant step in adopting novel supercapacitor form factors for utility-scale applications in the US energy market.
• In December 2024, Nanoramic Laboratories announced that it had secured $44 million in a financing round co-led by GM Ventures and Catalus Capital to advance its energy storage technologies. The company planned to use this investment to accelerate the commercialization of its proprietary Neocarbonix electrode technology, which eliminates the need for toxic solvents and fluorinated binders in battery and supercapacitor manufacturing. This strategic collaboration with major automotive and investment partners aimed to scale the production of cost-effective, high-performance energy storage solutions, thereby strengthening the supply chain for electric vehicles and industrial applications within the United States.
• In November 2024, Kyocera AVX expanded its presence in the United States supercapacitor market by launching the SCC Series of cylindrical electrochemical double-layer capacitors. These new energy storage devices were designed to deliver high pulse power performance and low equivalent series resistance, making them suitable for a wide range of industrial and consumer electronics applications. The company emphasized that the series offered capacitance values ranging from 1F to 3000F, providing engineers with reliable backup power and extended battery life solutions. This product release highlighted the company's commitment to advancing supercapacitor technology for diverse market needs.
• In March 2024, Knowles Precision Devices, through its Cornell Dubilier brand, launched a new line of supercapacitor modules designed to enhance energy storage capabilities for industrial and electronic applications in the United States. The newly introduced DGH and DSF Series three-cell supercapacitors were engineered to operate at higher voltages up to 9.0 WVDC, offering a significant improvement over traditional single or dual-cell configurations. These modules were developed to support critical functions such as energy harvesting, pulse power delivery, and battery backup systems, addressing the growing demand for efficient power solutions in the US market.

Key Market Players

• Maxwell Technologies
• Ioxus Inc.
• Cornell Dubilier Electronic
• Eaton Corporation plc
• AVX Corporation
• Loxus Inc.
• ADA Technologies
• Panasonic Corporation of North America
• TOKIN Corporation
• Tesla Inc.

By Region

Northeast Midwest South West

Report Scope:

In this report, the United States Supercapacitor Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

• United States Supercapacitor Market, By Region:

• Northeast
• Midwest
• South
• West