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
Minhéu hydroelectric plant
Largest grid storage in Portugal of 14 · top 22% worldwide (#210 of 965)
- Owner
- Iberdrola SA
- Status
- construction
- Capacity
- 1,320 MW
- Technology
- pumped storage
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · Portugal · 14 ranked
- #1Minhéu hydroelectric plant1.3 GW
- #2Gouvães hydroelectric plant880 MW
- #3Venda Nova III hydroelectric plant780 MW
Grid connection · within 50 km
- Nearest substation
- Posto de Corte do Alto Tâmega
- Its voltage
- 400 kV
- Distance
- 4.0 km
- Strongest line nearby
- 400 kV
- Line operator
- REN
- Substations in range
- 10
Mapped grid infrastructure from OpenStreetMap, whose coverage is excellent in some regions and sparse in others. Nothing shown here means nothing is mappednearby — not that the site is unconnected. Lines are matched on a segment’s midpoint, so a corridor passing directly overhead can be missed; this under-reports rather than invents.
Co-located infrastructure · within 25 km
- Minhéu hydroelectric plant0 m · Power Plant · 1.3 GW · hydro
- Alto Tâmega - Gouvães 1&23.9 km · Transmission Line
- Alto Tâmega - Gouvães 14.0 km · Transmission Line
- Alto Tâmega - Gouvães 24.0 km · Transmission Line
- Posto de Corte do Alto Tâmega4.0 km · Substation / Converter
- Alto Tâmega hydroelectric plant4.4 km · Power Plant · 160 MW · hydro
- Subestação da Central Hidroelétrica do Alto Tâmega4.4 km · Substation / Converter
- Subestação de Gouvães6.5 km · Substation / Converter
- Gouvães hydroelectric plant7.0 km · Power Plant · 880 MW · hydro
- Gouvães hydroelectric plant7.0 km · Grid Storage · 880 MW
- Alto Rabagão hydroelectric plant25 km · Grid Storage · 68 MW
On the interactive map
Portfolio
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)