---
title: Gravity Battery
type: technology
url: "https://www.envisioning.com/research/atmos/gravity-battery"
hub: atmos
summary: Stores energy by lifting mass and releasing it to generate power on demand
---

# Gravity Battery

Stores energy by lifting mass and releasing it to generate power on demand
- Technology Readiness Level: 6/9
- Impact: 4/5
- Investment: 4/5
Gravity batteries store energy by lifting a mass (concrete blocks, water, or weights) against gravity and releasing it to drive generators when power is needed. Pumped hydro is the dominant form; emerging designs use stacked blocks in towers or underground shafts (e.g., Energy Vault, Gravitricity). Small-scale examples exist; larger deployments are in development. Applications include grid balancing, renewable integration, and long-duration storage.

Energy storage faces cost and duration trade-offs. Gravity storage offers long-duration capability with minimal degradation over cycles. Challenges include capital intensity, site requirements (topography for pumped hydro; structures for block-based), and round-trip efficiency. Research continues into lower-cost designs and underground configurations. Gravity batteries represent an emerging option for long-duration storage.

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Source: Envisioning — Technology Research Institute (https://www.envisioning.com/research/atmos/gravity-battery)