Gravity Energy Storage
The physics of gravity storage are simple - lift something heavy, drop it when you need power. Doing it at grid scale reliably and cost-effectively is where it gets complicated. This report covers market sizing, Europe and North America leading early projects, and the competitive landscape among developers trying to prove the model at multi-hundred-MWh scale.
Strategic Analysis
- Industry Snapshot & Market Sizing - Market size, growth rate, and who's really buying, scored for durability.
- Tailwinds & Headwinds - The forces driving growth, and the one risk that could cap it.
- Market segmentation & opportunity sizing - Which segments to bet on, ranked by growth and ease of entry
- Value chain analysis - Where the money and power actually sit, stage by stage
- Competitive landscape & clustering - Who's winning, who's falling behind, and why, ranked by strength
- Customer segmentation - Who's buying, what they need, and where the real demand sits
- Key trends with time horizon - What's changing next, rated by impact, and whether to act now or wait
- Analyst view & strategic implications - The bottom-line call on where this market is headed
Overview
The gravity energy storage (GES) market is projected to grow from $1.0 billion in 2025 to $45.9 billion by 2040, at a CAGR of 27.18%, driven by demand for long-duration renewable firming and supportive policy mandates such as California's 2 GW non-lithium-ion storage target and New York's 4+ GW of 8-hour storage by 2035. Tower-based gravity storage dominates with 72% market share in 2026, though mechanical and hydraulic variants are expected to diversify the landscape by 2040. The primary adoption barriers are high capital expenditure, with levelized costs estimated at 1.5-2x those of comparable lithium-ion projects, combined with long permitting timelines and a limited commercial track record at scale. Project development and permitting represent the most concentrated and highest-disruption-risk stage of the value chain, making bankable project structures and utility partnerships the critical determinants of commercial success.
Key points
- The gravity energy storage market is forecast to reach $45.9 billion by 2040, growing at a CAGR of 27.18% from 2026, up from a $1.0 billion base in 2025.
- Gravity storage systems are estimated to achieve 65-90% round-trip efficiency and tens of thousands of cycles over multi-decade lifetimes, compared with lithium-ion batteries that typically degrade after 4,000-8,000 deep cycles.
- Gravity storage levelized costs are currently estimated at 1.5-2x those of comparable lithium-ion projects due to civil works and custom engineering requirements.
- Tower-based gravity storage held 72% of the GES market in 2026 but is projected to decline to 48% by 2040 as mechanical and hydraulic technologies gain share.
- Energy Vault's 10-year exclusive licensing agreement with GESSOL covers deployment rights across 16 countries and includes royalty-based project revenues, representing a capital-light geographic expansion model for gravity storage developers.
- Mine-shaft repurposing is rated the highest-impact GES trend (5 out of 5) because converting decommissioned coal and mine shafts into gravity storage sites avoids major greenfield civil works, making shaft access rather than technology the key strategic asset.
Source(s): Link1, Link2, Link3, Link4, Link5, Link6, Link7, Link8
FAQ's
Tower-based gravity storage dominates with 72% market share in 2026, declining to 48% by 2040 as mechanical and hydraulic gravity storage technologies gain ground. Pumped hydro holds 22% in 2026, falling to 17% by 2040, while mechanical and hydraulic segments grow from 3% and 3% to larger shares.
Source(s): Link1
