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
Substation / Converter
Grassland Switchyard
- Operator
- Portland General Electric
- Status
- operating
- Voltage
- 500 kV
Grid connection · within 50 km
- Nearest substation
- Longhorn
- Its voltage
- 500 kV
- Distance
- 24 km
- Strongest line nearby
- 500 kV
- Substations in range
- 2
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
- Carty - Grassland509 m · Transmission Line
- Boardman - Grassland917 m · Transmission Line
- Carty generating station1.3 km · Power Plant · 500 MW · gas
- Boardman Plant1.8 km · Power Plant · 642 MW · coal
- Percheron DC1.9 km · Data Centre
- Percheron DC2.0 km · Data Centre
- Coyote Springs-Slatt No 112 km · Transmission Line
- Tower solar farm14 km · Power Plant · 120 MW · solar
- Amazon Web Services19 km · Data Centre
- Coyote Island Terminal21 km · Export Terminal
- Longhorn24 km · Substation / Converter
On the interactive map
SOURCE: OpenStreetMap (ODbL) © OpenStreetMap contributors