Isenthal Bolzbach
Isenthal Bolzbach pumped hydro overview.
Isenthal Bolzbach is a hydroelectric installation on Lake Uri in the Swiss canton of Uri. First commissioned in 1955, it was extended with pumped-storage capability in 2025. Two pumps lift lake water to the Isenthal balancing reservoir, allowing the existing waterway to support both generation and storage.In OperationSwitzerland
At a Glance
Capacity
12 MWEnergy storage
Data coming soonOperator
Data coming soonCountry
SwitzerlandLocation
46.899°, 8.593°Website
Official project pageOwnership
1 record| Share | Organisation | Role | Details | Period |
|---|---|---|---|---|
| Unknown |  | Owner Operator | energieUri owns and operates the Isenthal hydroelectric and pumped-storage installation. | Current / not dated |
Organisations
1 recordOrganisations recorded as working on this asset or its project, and their role.
| Organisation | Role | Details |
|---|---|---|
| Hydroelectric and pumped-storage operatorOwner Operator | energieUri operates the Isenthal installation and commissioned its pumped-storage conversion in 2025. |
Supplier registration
Contact page onlyHow suppliers get onto this project's radar: its standing register, supplier portal or contact route.
Business enquiries can be submitted through energieUri’s general contact form. The form provides a company-wide route for enquiries about its energy activities.
Company-wide general enquiry form for energieUri’s energy and power-station activities.
SourceChecked 29 Oct 2026