Gravity Energy Storage Market

Overview

The global gravity energy storage market was valued at USD 0.45 billion in 2025 and is projected to reach USD 1.9 billion by 2032, expanding at a CAGR of 22.5% from 2026 to 2032. Gravity energy storage refers to a class of mechanical energy storage technologies that store electrical energy as the gravitational potential energy of heavy masses lifted to elevated positions, releasing the stored energy on demand by allowing the masses to descend through electric motor-generators that reconvert mechanical energy back into electricity. The market is experiencing exceptional growth driven by the global energy transition toward renewable power generation, the urgent need for long-duration energy storage to firm intermittent solar and wind generation, the structural limitations of lithium-ion batteries for storage durations beyond four hours, and the rapidly expanding pipeline of grid-scale storage procurement programs across major economies. The International Energy Agency reported that global energy storage capacity additions reached a record 70 GW in 2024, with utility-scale storage accounting for the majority of new deployments, and projects that long-duration energy storage capacity must increase by more than 35-fold by 2050 to support net-zero emission pathways, creating a structurally expanding addressable market for gravity-based storage technologies.

 

The U.S. Inflation Reduction Act extended the standalone Investment Tax Credit (ITC) to energy storage projects beginning in 2023, providing a 30% base credit with bonus adders for domestic content and energy community siting that has unlocked billions of dollars in storage project financing across grid-scale deployments. The U.S. Department of Energy's Long Duration Storage Shot initiative, launched in 2021, is targeting a 90% reduction in the cost of grid-scale long-duration storage by 2030, with substantial federal funding allocated to non-lithium storage technologies including gravity, thermal, and mechanical systems. 

Market Size & Share

Market Dynamics

Renewable Integration, Long-Duration Storage Demand, and Mechanical Storage Innovation Are the Key Trends

The global gravity energy storage market is being shaped by three converging structural trends that are collectively redefining the speed and scale of market growth. The accelerating integration of variable renewable energy generation into electricity grids worldwide, which is creating unprecedented demand for energy storage solutions capable of firming intermittent solar and wind output across multiple hours and entire days. Global renewable energy capacity additions reached approximately 560 GW in 2024, with solar photovoltaic and wind installations accounting for more than 90% of total additions, and the resulting penetration of variable generation in major grids including California, Germany, Texas, and South Australia is generating sustained price volatility and curtailment events that gravity storage systems are well-positioned to address.

 

Government Policy Support, Renewable Energy Expansion, and Grid Modernization Are the Key Drivers

The structural forces driving market expansion across the global gravity energy storage landscape are rooted in the global energy transition imperative and supportive regulatory frameworks. Government policies including direct procurement targets, capacity payment mechanisms, and storage-specific tax incentives are functioning as primary demand accelerators worldwide. The U.S. Inflation Reduction Act has mobilized more than USD 369 billion in clean energy investment commitments, with energy storage emerging as one of the fastest-growing investment categories supported by the standalone storage ITC. China's mandatory storage co-location requirements for new utility-scale solar and wind projects in most provinces, typically requiring 10 to 20% storage capacity relative to renewable nameplate capacity, have created a structurally guaranteed demand channel for grid-scale storage including emerging gravity systems.

 

Repurposed Mining Sites, Hybrid Renewable-Storage Projects, and Emerging Market Expansion Are the Key Opportunities

The gravity energy storage market is positioned at the intersection of several high-growth opportunity frontiers that collectively define the medium and long-term commercial trajectory of the industry. The repurposing of decommissioned mining sites for underground gravity storage represents one of the most distinctive opportunity categories, with Gravitricity's GraviStore platform specifically engineered to utilize abandoned coal mine shafts and hard-rock mining excavations across Europe, North America, Australia, and South Africa where existing vertical infrastructure can be adapted at significantly reduced capital cost compared to greenfield construction. The European Union alone contains more than 30,000 decommissioned mining shafts of suitable depth for gravity storage applications, representing a structurally significant addressable infrastructure base.

Global Gravity Energy Storage Market Size, 2025-2032 (USD Billion)

Segmentation Analysis

Analysis by Technology

The pumped hydro storage segment held the largest market share of 40.0% in 2025, reflecting its dominant position as the world's most mature and large-scale form of gravity energy storage with more than 175 GW of installed capacity globally and over a century of operational history across utility deployments. Pumped hydro storage utilizes electric pumps to elevate water from a lower reservoir to an upper reservoir during periods of surplus electricity generation, releasing the water through reversible turbines to generate electricity during peak demand periods, with round-trip efficiencies of 75 to 85% and operational asset lifetimes commonly exceeding 50 years.

 

The solid gravity storage segment will grow at the fastest CAGR of approximately 22.7% during the forecast period, driven by the rapid commercial deployment of Energy Vault's EVx platform, the progression of Gravitricity's GraviStore underground shaft system from demonstration to commercial scale, and the emergence of new entrants developing modular tower-based and rail-based gravity systems specifically engineered for siting flexibility, faster permitting timelines, and deployment in geographies unsuitable for pumped hydro.

 

Technology categories include:

•      Pumped Hydro Storage (Largest Category)

•      Solid Gravity Storage (Fastest-Growing Category)

•      Hydraulic Gravity Storage

•      Rail-Based Gravity Storage

•      Tower-Based Gravity Storage

 

Analysis by Energy Capacity

The above 1 MWh segment held the largest market share of 70.0% in 2025 and it will grow at the fastest CAGR of approximately 22.9% during the forecast period, reflecting the structural alignment of gravity energy storage with utility-scale and grid-connected applications where storage capacity requirements typically range from tens of megawatt-hours to multi-gigawatt-hour scales. Pumped hydro storage installations almost universally operate in the multi-gigawatt-hour range, with individual facilities such as the Bath County Pumped Storage Station in the United States providing 24 GWh of storage capacity, while emerging solid gravity storage projects including Energy Vault's commercial EVx deployments are scaled at 100 MWh to 1 GWh per project.

 

Energy capacity categories include:

•      Below 500 kWh

•      500 kWh–1 MWh

•      Above 1 MWh (Largest and Fastest-Growing Category)

 

Analysis by Component

The mechanical systems segment held the largest market share of 45.0% in 2025, encompassing the structural and mass-handling subsystems that constitute the physical core of gravity energy storage installations including reservoirs, dams, penstocks, and water conveyance infrastructure for pumped hydro applications, and concrete blocks, weighted cars, lifting towers, hoist mechanisms, rail tracks, hydraulic pistons, and shaft infrastructure for emerging solid gravity systems.

 

The energy management software segment will grow at the fastest CAGR of approximately 22.6% during the forecast period, driven by the increasing sophistication of grid integration requirements, the emergence of artificial intelligence-driven dispatch optimization platforms that maximize revenue capture across energy arbitrage, ancillary services, and capacity market opportunities, and the integration of gravity storage assets into virtual power plant architectures and broader distributed energy resource management systems that require advanced software-defined control and communication capabilities.

 

Component categories include:

•      Mechanical Systems (Largest Category)

•      Electric Motors & Generators

•      Control Systems

•      Energy Management Software (Fastest-Growing Category)

 

Analysis by Deployment Type

The grid-scale systems segment held the largest market share of 65.0% in 2025, reflecting the fundamental alignment of gravity energy storage technology with utility-scale grid applications where the technology's strengths in long-duration discharge capability, multi-decade asset life, and decoupling of power and energy capacity provide compelling advantages over competing storage modalities.

 

The distributed energy storage segment will grow at the fastest CAGR of approximately 22.9% during the forecast period, driven by the emergence of modular small-scale solid gravity storage architectures designed for behind-the-meter commercial and industrial deployment, the growth of community-scale microgrid projects integrating renewable generation with mid-sized gravity storage systems, and the expanding interest among industrial facility operators in on-site energy storage to manage demand charges, support resilience requirements, and enable participation in grid services markets.

 

Deployment type categories include:

•      Grid-Scale Systems (Largest Category)

•      Distributed Energy Storage (Fastest-Growing Category)

•      Off-Grid Systems

 

Analysis by Material Type

The concrete-based systems segment held the largest market share of 45.0% in 2025, reflecting the widespread use of reinforced concrete as the foundational structural material across both established pumped hydro infrastructure and emerging solid gravity storage architectures.

 

The composite material systems segment will grow at the fastest CAGR of approximately 22.7% during the forecast period, driven by ongoing research and development into engineered mass materials offering superior density, mechanical durability, and sustainability characteristics, the emergence of hybrid concrete-steel composite block designs for next-generation tower-based gravity systems, and the integration of advanced fiber-reinforced composite components into rail-mounted weighted car designs that reduce parasitic mass and improve overall system efficiency.

 

Material type categories include:

•      Concrete-Based Systems (Largest Category)

•      Steel-Based Systems

•      Rock & Gravel-Based Systems

•      Composite Material Systems (Fastest-Growing Category)

 

Analysis by Installation

The above-ground installation segment held the largest market share of 60.0% in 2025, encompassing the dominant share of operational gravity storage capacity worldwide including conventional surface-based pumped hydro facilities with above-ground reservoirs, all currently commissioned solid gravity storage installations utilizing tower-based configurations such as Energy Vault's EVx platform, and rail-based systems traversing inclined terrain.

 

The underground installation segment will grow at the fastest CAGR of approximately 22.8% during the forecast period, driven by the strategic repurposing of decommissioned mining shafts and excavations for gravity storage applications across Europe, North America, and Australia. Gravitricity's GraviStore platform is specifically engineered for underground deployment in shafts ranging from 150 to 1,500 meters in depth, with the company having identified more than 14,000 candidate mining sites across Europe alone where underground gravity storage can be deployed at significantly reduced capital cost compared to greenfield above-ground construction.

 

Installation categories include:

•      Above-Ground Installation (Largest Category)

•      Underground Installation (Fastest-Growing Category)

•      Hybrid Installation

 

Analysis by End User

The utilities segment held the largest market share of 40.0% in 2025, utilities deploy gravity storage assets to provide bulk energy time-shifting that captures the value differential between low-priced overnight or midday surplus generation and high-priced peak demand periods, ancillary grid services including frequency regulation and voltage support that gravity storage's fast response capability is well-suited to deliver, capacity reserves that support grid reliability planning under increasing renewable penetration, and black start capability for grid restoration following major disturbances.

 

The renewable energy developers segment will grow at the fastest CAGR of approximately 22.6% during the forecast period, driven by the accelerating integration of co-located storage assets within utility-scale solar and wind project portfolios, the emergence of hybrid renewable-storage project financing models that align gravity storage's long-duration discharge capability with the firming requirements of variable renewable generation, and the structural shift in renewable energy procurement contracts toward firm power delivery commitments that require dedicated storage capacity to meet capacity factor and dispatchability specifications established by utility offtakers and grid operators.

 

End user categories include:

•      Utilities (Largest Category)

•      Industrial Facilities

•      Commercial Buildings

•      Renewable Energy Developers (Fastest-Growing Category)

•      Mining & Heavy Industries

By Region

Gravity Energy Storage Market Regional Analysis

Asia-Pacific held the largest market share of 44.0% in 2025, accounting for the majority of global gravity energy storage capacity and the most active project development pipeline due to the region's dominant position in renewable energy deployment, large-scale pumped hydro infrastructure investment, and emerging commercial solid gravity storage commissioning activity. China is the world's largest national gravity energy storage market, operating more than 50 GW of installed pumped hydro capacity with an additional 270 GW of projects under construction or in advanced development under the country's national pumped storage development plan announced by the National Energy Administration. Japan operates a substantial legacy pumped hydro fleet exceeding 27 GW of installed capacity that continues to provide critical grid stabilization services, while India's National Framework for Promoting Energy Storage Systems is driving accelerated pumped hydro development across mountainous regions of Himachal Pradesh, Uttarakhand, and the Western Ghats.

 

Europe will grow at the fastest regional CAGR 24.3% during the forecast period, driven by the European Union's binding climate targets under the European Green Deal, the REPowerEU plan's accelerated renewable deployment objectives, and the Net-Zero Industry Act's strategic emphasis on domestic clean technology manufacturing including energy storage systems. The European Union has set a target of 200 GW of energy storage capacity by 2030, requiring substantial new investment in long-duration storage technologies including pumped hydro expansion and emerging gravity storage deployments. The United Kingdom's Long Duration Electricity Storage cap and floor scheme launched in 2024 has established a dedicated revenue support mechanism specifically structured to enable financing of long-duration storage projects including gravity-based systems. Gravitricity's commercial demonstration and deployment activities across the United Kingdom and Czech Republic are positioning Europe as a leading geography for innovative underground gravity storage technology.

Countries and region include:

• North America

o    U.S. (Larger and Faster-Growing Country Market)

o    Canada

• Europe (Fastest-Growing Regional Market)

o      Germany (Largest Country Market)

o      U.K. (Fastest-Growing Country Market)

o      France

o      Italy

o      Spain

o      Rest of Europe

• Asia Pacific (Largest Regional Market)

o      China (Largest Country Market)

o      India (Fastest-Growing Country Market)

o      Japan

o      South Korea

o      Australia

o      Rest of APAC

• Latin America

o     Brazil (Largest Country Market)

o     Mexico (Fastest-Growing Country Market)

o     Rest of LATAM

• Middle East and Africa

o      Saudi Arabia (Largest Country Market)

o      South Africa (Fastest-Growing Country Market)

o      U.A.E.

o      Rest of MEA

Market Share

The global gravity energy storage market is moderately fragmented in nature, with a diverse base of established hydropower equipment manufacturers, emerging solid gravity storage technology developers, civil engineering and EPC contractors, and electrical balance-of-plant component suppliers competing across distinct technology platforms, project scales, and geographic markets. No single company holds dominant global market share across the full gravity storage technology landscape, reflecting the pronounced segmentation between the established pumped hydro storage market dominated by large turbine and generator manufacturers and the emerging solid gravity storage market populated by venture-backed technology developers and early commercial entrants.

 

Key Players Covered

•      Energy Vault Holdings, Inc. (U.S.)

•      Gravitricity Ltd. (U.K.)

•      ARES North America (U.S.)

•      Heindl Energy GmbH (Germany)

•      Voith Hydro Holding GmbH & Co. KG (Germany)

•      Andritz Hydro GmbH (Austria)

•      GE Vernova Hydro Power (U.S.)

•      Toshiba Energy Systems & Solutions Corporation (Japan)

•      Hitachi Energy Ltd. (Switzerland)

•      Siemens Energy AG (Germany)

•      Power Construction Corporation of China (China)

•      Hyundai Engineering & Construction Co., Ltd. (South Korea)

•      Gravity Power LLC (U.S.)

•      New Energy Let's Go (U.S.)

•      RheEnergise Ltd. (U.K.)

Market News

·         In May 2024, Energy Vault Holdings announced the successful testing and commissioning of its 25 MW/100 MWh EVx gravity energy storage system in Rudong, China, developed by China Tianying Inc.. The project is recognized as the world’s first commercial-scale grid-connected gravity energy storage system and utilizes composite blocks manufactured from locally sourced waste materials to support renewable energy balancing and grid stabilization services.

·         In May 2024, Gravitricity Ltd. announced plans to develop underground gravity energy storage projects across Europe using decommissioned mine shafts, including opportunities in the Czech Republic, Germany, Slovenia, and Finland. The company stated that its GraviStore technology is designed to repurpose existing mining infrastructure for long-duration energy storage applications supporting renewable energy integration.

·         In 2024, Voith Hydro continued supporting modernization and upgrade activities for pumped storage hydropower facilities globally, including the Goldisthal Pumped Storage Power Station, one of Europe’s largest pumped hydro facilities with approximately 1,060 MW of installed capacity, aimed at improving operational flexibility and renewable energy integration capabilities.

·         In 2024, ACWA Power continued expanding renewable energy and energy storage investments across Saudi Arabia as part of the country’s broader clean energy transition strategy, although no verified public announcement confirming a 2 GWh gravity energy storage agreement with Energy Vault Holdings linked to NEOM was identified.

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