Based on the provided reference, the exact invention date of the sand battery concept is not stated. However, the reference does provide a significant date related to the deployment of this technology: the installation of a major sand battery system.
A Key Milestone: Installation in Finland
According to the reference, a notable sand battery system was installed in Finland's Kankaanpää town in June 2022. This marks a significant point in the practical application and scaling of the technology.
The reference describes this specific installation:
- Type: A massive steel silo
- Dimensions: 7 meters tall and 4 meters wide
- Material: Contains 100 tonnes of sand
- Location: Kankaanpää town, Finland
- Installation Date: June 2022
- Purpose: Connected to the town's centralised heating network, used to keep buildings and public water systems warm.
This installation, reported on in February 2023, represents a real-world example of a sand battery being implemented for practical energy storage and distribution, showcasing the technology's viability at a community level. While it doesn't tell us when the fundamental idea of using sand for thermal energy storage was first conceived or patented, it highlights a crucial step in its journey from invention to large-scale deployment.
Sand Battery Technology
