Browse the atlas
OverWatts AtlasCountriesOwnersInsightsWireChangesSources Live map
Asset classes
- Transmission Line80,968
- Power Plant32,429
- Substation / Converter7,614
- Oil & Gas Field7,055
- Coal / Uranium Mine5,382
- Pipeline4,951
- Cement Plant3,513
- Data Centre3,283
- Iron & Steel Plant1,293
- LNG Terminal1,198
- Grid Storage965
- Iron Ore Mine949
- Chemical Plant868
- Interconnector704
- Export Terminal519
- Refinery279
- Storage / Tank Farm38
- Oil / Commodity Contract19
- Hydrogen Project18
- Carbon Capture (CCS)16
Chokepoints
Grid Storage
Madden hydroelectric plant
959th-largest grid storage worldwide · top 100% worldwide (#959 of 965)
- Status
- operating
- Capacity
- 36 MW
- Technology
- pumped storage
- Commissioned
- 1935
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · worldwide · 965 ranked
- #1Yebatan Pumped Storage hydroelectric plant4.5 GW
- #957Telessio hydroelectric plant38 MW
- #958Feiticeiro hydroelectric plant38 MW
- #959Madden hydroelectric plant36 MW
- #960Letten hydroelectric plant36 MW
- #961Breña 2 hydroelectric plant34 MW
Co-located infrastructure · within 25 km
- Quebracha Cement Plant6.9 km · Cement Plant
- Calzada Larga Cement Plant10.0 km · Cement Plant
- Panama Canal16 km · Maritime Chokepoint
- Cable & Wireless24 km · Data Centre
On the interactive map
Watercourse: Rio Chagres
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)