Pumped Hydro Storage
Pumped storage hydropower that stores grid electricity by pumping water to an upper reservoir and releases it through turbines when power is needed.
Core metadata
- ID: pumped_hydro_storage
- Era: Modern
- First known date: 1890 (decade)
- Region: Italy and Switzerland; United States adoption from Rocky River/New Milford, Connecticut by 1929-1930
- Review status: source_checked
- Maturity: established
Prerequisites
- Electrical Grid (Early Distribution) (electrical_grid_early_distribution)
- Hydroelectric Power Plants (hydroelectric_power_plants)
Dependents
Fields
Field lanes
- Energy Systems & Grid: Storage
Node sources
- Pumped Storage Hydropower (U.S. Department of Energy, 2026, official_agency) • Supports: node, maturity
- History of Hydropower (U.S. Department of Energy, 2026, official_agency) • Supports: node, maturity
- Energy Storage (U.S. Department of Energy, 2026, official_agency) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 2
- Average edge confidence: 76%
- Prerequisite sources: 2
- expert_inference: 2
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Hydroelectric Power Plants (hydroelectric_power_plants) | enabling | 68% | expert_inference | Hydroelectric Power Plants provides a capability that enables this technology without being the only possible path. |
|
| Electrical Grid (Early Distribution) (electrical_grid_early_distribution) | required | 84% | expert_inference | Pumped storage hydropower is scoped as electric-grid storage: it requires electricity to pump water uphill and releases stored power back when needed. |
|
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