Green Gravity repurposes disused mine shafts for utility-scale gravitational energy storage, utilizing a system that raises and lowers heavy weights to capture and release energy. This technology addresses the intermittent nature of renewable energy generation by providing a reliable storage solution that can deliver energy on demand without the degradation issues associated with traditional battery systems.
Funding
$10.2M raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Product
Problem
Renewable energy sources like wind and solar are intermittent, creating a need for reliable energy storage solutions to ensure consistent power delivery. Existing energy storage methods, such as batteries, can degrade over time and may have environmental concerns related to their chemical composition and disposal. Furthermore, many abandoned mine shafts remain unused, representing a potential resource for sustainable development.
Solution
Green Gravity offers a utility-scale gravitational energy storage system that repurposes disused mine shafts. The system works by raising and lowering heavy weights within the mine shaft to store and release energy on demand. This approach provides a long-duration, flexible, and environmentally friendly alternative to traditional battery storage. By utilizing existing infrastructure, Green Gravity's technology reduces costs, promotes circular economy principles, and supports local economies through job creation and the use of locally sourced materials. The system is designed for long life with minimal degradation, offering a sustainable solution for grid ancillary services and energy security.
Target Audience
Green Gravity targets energy providers, grid operators, and mining companies looking for sustainable and cost-effective energy storage solutions, as well as communities seeking to repurpose abandoned mine sites.
Features
- Repurposes existing mine shafts for gravitational energy storage
- Raises and lowers heavy weights to store and release energy
- Provides short to mid-duration energy storage
- Offers grid ancillary services for grid stabilization
- Uses locally sourced materials and workforce
- Designed for long life with minimal degradation
- Fully recyclable system with low noise and minimal land use
- No water or chemicals required