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Chokepoints
Grid Storage
Cheylas hydroelectric plant
5th-largest grid storage in France of 9 · top 68% worldwide (#650 of 965)
- Owner
- EDF Energy Ltd
- Status
- operating
- Capacity
- 485 MW
- Technology
- pumped storage
- Commissioned
- 1979
- Also listed as
- A power plant — this site generates as well as stores
Comparable grid storages · France · 9 ranked
- #1Grand Maison hydroelectric plant1.7 GW
- #3Revin hydroelectric plant808 MW
- #4Super Bissorte hydroelectric plant742 MW
- #5Cheylas hydroelectric plant485 MW
- #6Pouget hydroelectric plant447 MW
- #7Coche hydroelectric plant384 MW
Grid connection · within 50 km
- Nearest substation
- Poste électrique du Cheylas
- Its voltage
- 400 kV
- Distance
- 201 m
- Strongest line nearby
- 400 kV
- Line operator
- RTE
- 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
- Cheylas hydroelectric plant0 m · Power Plant · 485 MW · hydro
- 400 kV line121 m · Transmission Line
- Poste électrique du Cheylas201 m · Substation / Converter
- Poste électrique de Grande-Île9.6 km · Substation / Converter
- Station de conversion Savoie piemont 320 kV9.6 km · Substation / Converter
- La Perelle Cement Plant20 km · Cement Plant
- Chambery Cement Plant22 km · Cement Plant
On the interactive map
Portfolio
SOURCE: Global Energy Monitor · Global Integrated Power, March 2026 (CC BY 4.0)