Limmern

Limmern pumped hydro overview.

Limmern is an underground pumped-storage plant in the Glarus Alps, operated by Kraftwerke Linth-Limmern. Its four reversible 250 MW units move water between Limmernsee and the higher Muttsee reservoir, balancing electricity supply and demand. Commissioned in stages during 2016–2017, it forms a distinct part of the wider Linth-Limmern hydropower scheme.In OperationSwitzerland

At a Glance

Capacity

1,000 MW

Energy storage

Data coming soon

Operator

Data coming soon

Country

Switzerland

Location

46.847°, 9.011°

Website

Official project page

Ownership

1 record

Share	Organisation	Role	Details	Period
Unknown		Owner Operator	Owner and operator of the Limmern pumped-storage installation.	Current / not dated

Organisations

29 records

Organisations recorded as working on this asset or its project, and their role.

Organisation	Role	Details
	Original electrical equipmentSubstation Electrical	Supplier of electrical equipment and machine transformers.
	Historical planning partnerEngineering And Design	Member of the IG Alpenstrom planning consortium.
	Original electromechanical supplierEquipment Supply	Alstom supplied the original electromechanical equipment and assembled the generator rotors in the cavern.
Axpo Power AG	Operator	Not set
	Project-company partner and developerDevelopment And Asset Management	Axpo Power is a partner in Kraftwerke Linth-Limmern and participated in development of the pumped-storage installation.
	Pressure-shaft steelworkEquipment Supply	Supplier of the original pressure-shaft linings.
	Historical planning partnerEngineering And Design	Member of the IG ELS planning consortium.
	Historical planning partnerEngineering And Design	Member of the IG EB-KLL planning consortium.
	Water-control equipmentEquipment Supply	Supplier of the original shut-off equipment.
	Cableways and funicularTransport Installation	Supplier of construction cableways and the access funicular.
	Hydropower technology and handoverEquipment Supply	GE’s hydropower case study describes four 250 MW variable-speed units and handover to KLL in December 2017.
	Historical planning partnerEngineering And Design	Member of the IG EB-KLL planning consortium.
	Historical planning partnerEngineering And Design	Member of the IG ELS planning consortium.
	Historical planning partnerEngineering And Design	Member of the IG Alpenstrom planning consortium.
	Historical planning partnerEngineering And Design	Member of the IG Alpenstrom planning consortium.
	Historical planning partnerEngineering And Design	Member of the IG Alpenstrom planning consortium.
	Cantonal project-company shareholderOwnership History	The Canton of Glarus holds 15% of the shares in Kraftwerke Linth-Limmern; this is a company shareholding.
	Historical planning partnerEngineering And Design	Member of the IG Alpenstrom planning consortium.
	Station owner and operatorOwner Operator	Kraftwerke Linth-Limmern owns and operates the Limmern pumped-storage plant.
	Historical access-tunnel partnerEpc Balance Of Plant	Member of the AZL construction consortium.
	Historical planning partnerEngineering And Design	Member of the IG ELS planning consortium.
	Historical construction partnerEpc Balance Of Plant	Member of ARGE Kraftwerk Limmern.
	Historical construction partnerEpc Balance Of Plant	Member of ARGE Kraftwerk Limmern.
	Historical construction partnerEpc Balance Of Plant	Member of ARGE Kraftwerk Limmern.
	Historical access-tunnel partnerEpc Balance Of Plant	Member of the AZL construction consortium.
	Historical access-tunnel partnerEpc Balance Of Plant	Member of the AZL construction consortium.
	Historical planning partnerEngineering And Design	Member of the IG EB-KLL planning consortium.
	Historical construction partnerEpc Balance Of Plant	Member of ARGE Kraftwerk Limmern.
	Historical access-tunnel partnerEpc Balance Of Plant	Member of the AZL construction consortium.

Supplier registration

Contact page only

How suppliers get onto this project's radar: its standing register, supplier portal or contact route.

Prospective suppliers can introduce products and services through the corporate procurement contact form. Further engagement follows the company’s supplier qualification process.

Corporate supplier-introduction form covering Axpo businesses; no Limmern-specific supplier register.

Supply chain pageContact page

SourceChecked 29 Oct 2026

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