Ewe Gasspeicher

What Ewe Gasspeicher does

EWE GASSPEICHER GmbH is a German underground gas storage operator and wholly owned subsidiary of EWE AG, headquartered in Oldenburg. The company operates approximately 37 salt caverns across four sites (Huntorf, Nüttermoor, Jemgum, and Rüdersdorf) in northwestern and eastern Germany, providing approximately 2 billion cubic meters of working gas capacity, making it one of the largest storage operators in the German and European natural gas market. The company has operated for more than 50 years since the mid-1970s, serving gas traders, energy companies, and transmission system operators seeking storage capacity for portfolio optimization, market area arbitrage, balancing energy, and supply security. Its strategic location near the German-Dutch border provides unique connectivity to both the German THE and Dutch TTF market areas via multiple transmission system operators (Gasunie, GASCADE, Thyssengas, GTG Nord), with REGENT provisions enabling discounted cross-border transmission fees.

Revenue is generated primarily through annual storage capacity fees for working gas volume, injection capacity, and withdrawal capacity, marketed via the EWE eCap digital auction platform and direct account management. Storage fees are published per facility and vary by gas type (H-gas and L-gas) and market area connection. The company also provides a secondary marketing service allowing existing customers to remarket contracted capacities. EWE GASSPEICHER is undergoing a strategic transformation from pure natural gas storage to a hybrid gas-and-hydrogen operator. Three hydrogen storage projects at Huntorf, Jemgum, and Rüdersdorf were granted Project of Common Interest (PCI) status by the European Commission in December 2025, enabling accelerated permitting and CEF funding eligibility. The Huntorf hydrogen storage facility is expected to be operational from late 2027, with a tender procedure launching July 2026 for 15-year storage contracts starting January 2030, offering two capacity bundles (Alpha: 11.2 million Nm³ working gas; Beta: 4.8 million Nm³ working gas). Hydrogen storage development leverages the company's proprietary HyCAVmobil technology, validated through research with the German Aerospace Center (DLR), and integrates into the European Hydrogen Backbone and HI West hydrogen corridor.

Name

Ewe Gasspeicher

Legal name

EWE GASSPEICHER GmbH

Website

https://ewe-gasspeicher.de

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

11–50 employees

Short description

EWE GASSPEICHER GmbH is a German underground salt cavern gas storage operator (subsidiary of EWE AG) with 37 caverns and ~2 billion cubic meters of working gas capacity, serving gas traders and TSOs across German and Dutch market areas while transitioning into hydrogen storage.

Ownership category

akta.pro rank

Product category

Underground Gas Storage Services

NAICS

Pipeline Transportation of Natural Gas (486210)

SIC

Wholesale-Petroleum Bulk Stations & Terminals (5171)

akta.pro primary industry

Tank Leasing & Third-Party Storage Operators (EUALAEAF)

Keywords

• Underground gas storage
• Natural gas storage
• Hydrogen storage
• Salt cavern storage
• Gas capacity marketing

Headquarters

HQ city

Oldenburg

HQ country

Germany

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Operations, Personnel, Technology or R&D

Revenue model

1. Natural Gas Storage Capacity Fees: EWE GASSPEICHER generates revenue through storage fees charged for booking capacities in their natural gas cavern storage facilities. Storage capacities are booked for working gas volume, injection, and withdrawal capacities. Fees vary by storage facility (H-Gas, L-Gas) and market area connection.
2. Hydrogen Storage Capacity (Future Revenue): Hydrogen storage services to be offered from Huntorf facility starting late 2027, with tender procedure beginning July 2026 for capacities from January 2030 onward. Two bundles offered: Alpha (11.2 million Nm³ working gas, 24,500 Nm³/h injection/withdrawal) and Beta (4.8 million Nm³ working gas, 10,500 Nm³/h injection/withdrawal).
3. Secondary Marketing Services: Free service allowing existing storage customers to remarket their contracted storage capacities (or parts of it) on a secondary basis. Customers can offer capacities through company platform.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

EWE GASSPEICHER GmbH operates underground salt cavern storage facilities for natural gas (H-gas and L-gas) and is developing hydrogen storage infrastructure in Germany. With approximately 2 billion cubic meters of working gas capacity across 37 caverns at sites in Huntorf, Nüttermoor, Jemgum, and Rüdersdorf, the company markets storage capacity to gas traders, energy companies, and transmission system operators through the EWE eCap digital auction platform and direct account management.

Product overview

EWE Gasspeicher operates as a natural gas and hydrogen storage operator with approximately 2 billion cubic meters of working gas capacity across multiple underground salt cavern locations in northwestern and eastern Germany. The company offers a portfolio of storage products including H-gas and L-gas cavern storage facilities at Nüttermoor, Jemgum, Huntorf, and Rüdersdorf. The EWE eCap digital platform enables transparent auction-based capacity marketing. The company is transitioning its operations toward hydrogen storage, with multiple PCI-designated hydrogen storage projects in development at Huntorf, Jemgum, and Rüdersdorf. Storage contracts are available for multiple facilities, and secondary marketing services allow customers to remarket contracted capacities.

Differentiator

Problem solved

Functional benefit

Brands

• EWE eCap: Digital storage capacity platform for auction participation and capacity marketing
• Clean Hydrogen Coastline
• HyCAVmobil
• CHC Huntorf Storage

Products and services

• Natural Gas Storage (H-Gas) Underground salt cavern storage for high-calorific natural gas (H-gas), sold as working gas volume, injection capacity, and withdrawal capacity to enterprise gas traders and TSOs across sites including Huntorf, Nüttermoor, Jemgum, and Rüdersdorf.
• Natural Gas Storage (L-Gas) Underground salt cavern storage for low-calorific natural gas (L-gas) at the Storage Zone L-Gas facility, being progressively converted to H-gas. Sold to enterprise gas traders.
• EWE eCap Digital Auction Platform Digital storage capacity marketing portal enabling prospective buyers to register with EIC code, submit offers for storage capacities and gas volumes, participate in auctions, and manage contracts transparently and without discrimination across EWE storage facilities.
• Secondary Marketing Service Free service allowing existing storage customers to remarket their contracted storage capacities (or parts thereof) to third parties on a secondary basis, enabling secondary market liquidity.
• Storage Capacity Transparency Daily-updated public information on maximum, booked, and free storage capacities for each cavern site or cavern pool, alongside storage fill levels, load flows, and reference calorific values.
• Storage Contracts Standardized storage contracts covering working gas volume, injection capacity, and withdrawal capacity at EWE H-Gas Zone, Storage Zone L-Gas, Jemgum, and Nüttermoor H4 facilities.

Quantifiable outcome

• Storage capacity of approximately 2 billion cubic metres of working gas
• +3 more outcomes

Named customers2 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eight partnerships are on record, tiered core.

• German Aerospace Center (DLR)coreStrategic or Co-development Partner · 1 December 2024EWE and DLR jointly conducted the HyCAVmobil research project, successfully demonstrating safe storage of green hydrogen in underground salt caverns. At Rüdersdorf site near Berlin, a 500-cubic-meter test cavern was used to trial injection and withdrawal under real-world conditions. This partnership established proof-of-concept for EWE's hydrogen storage technology.
• Gasunie Transport Services (GTS)coreTechnology or IntegrationNüttermoor H4 storage facility connected to GTS network for TTF market area access. GTS enables 75% discount on transmission fees for storage customers under Dutch Tariff Code provisions. EWE provides storage contract related data to GTS for cross-border storage settlement.
• Gasunie DeutschlandcoreTechnology or IntegrationNüttermoor H5 and H2 connected to Gasunie Deutschland network for THE market area access. Network codes include H200/H199 for Jemgum and H651/H650 for Nüttermoor H5.
• GASCADEcoreTechnology or IntegrationNüttermoor H3 connected to GASCADE network for THE market area access. Enables German market area connectivity for storage customers.
• ThyssengascoreTechnology or IntegrationNüttermoor H2/H3 and Jemgum connected to Thyssengas network. Network codes include Leer-Mooräcker connections for both storage facilities.
• Gastransport Nord (GTG)coreTechnology or IntegrationStorage zone L-Gas and Huntorf H-Gas Zone connected to GTG Nord network for THE market area. Huntorf hydrogen storage facility connected to GTG's hydrogen core network delivery point.
• Gastransport Nord (GTG) - Hydrogen Core NetworkcoreTechnology or IntegrationHuntorf hydrogen storage facility is connected to the hydrogen core network (Wasserstoff-Kernnetz) of GTG Nord, integrating with the European Hydrogen Backbone infrastructure.
• European Hydrogen BackbonecoreStrategic or Co-development PartnerEWE hydrogen storage projects integrated into the European Hydrogen Backbone network, supporting the development of integrated European hydrogen infrastructure.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Storengy Deutschland GmbH: Subsidiary of ENGIE's Storengy, operating underground gas storage sites in Germany including Etzel-area facilities. Direct peer in cavern storage operations, marketing, and hydrogen storage pilots in Germany.
• astora GmbH: One of the largest underground gas storage operators in Germany, operating salt cavern facilities (including Etzel) with H-gas and L-gas capacity. Direct competitor to EWE GASSPEICHER in German cavern-based gas storage and a benchmark for cavern-to-hydrogen repurposing.
• VNG Gasspeicher GmbH: German gas storage operator with multiple cavern and pore storage facilities in central and eastern Germany. Competes with EWE GASSPEICHER for the same German utility, trader, and TSO storage customers.
• Friedeburger Speicherbetriebsgesellschaft mbH (Etzel Storage): Operator of the Etzel cavern storage facility cluster in northwestern Germany, one of the largest H-gas storage sites in Europe. Direct competitor to EWE GASSPEICHER for the same German/TTF gas storage customers.

Broad incumbents

• Uniper Energy Storage GmbH: Energy major with a large German gas storage portfolio across multiple sites. Competes with EWE GASSPEICHER in cavern storage capacity sales while also being a broader gas and power market participant.
• RWE Gas Storage West / RWE Hydrogen: RWE operates gas storage assets in Germany and is one of the most active corporate developers of large-scale hydrogen storage and infrastructure. Comparable to EWE in gas storage and a likely co-developer/competitor in hydrogen caverns.
• EnBW Energie Baden-Württemberg AG (Storage): German integrated utility that has historically operated underground gas storage assets. Comparable as a German utility-scale storage operator and emerging hydrogen infrastructure developer.

Emerging players

• DEEP Underground Engineering GmbH: Specialist in underground gas storage engineering, cavern design, and hydrogen storage feasibility. Comparable as a technical counterpart and potential EPC/services partner for EWE's hydrogen cavern conversion program.
• Hanseatic Energy Hub (HEH): Planned large-scale hydrogen and CO2 storage / import hub consortium in northern Germany. Comparable as a greenfield, large-scale hydrogen storage infrastructure developer in the same German market and regulatory framework as EWE.

Regional players

• Gasunie / EnergyStock: Dutch gas TSO that operates underground gas storage in the Netherlands and is a core partner for EWE's TTF market area access and hydrogen backbone development. Directly comparable as a North-West European storage and TSO counterpart.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ewe-gasspeicher-gmbh

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ewe Gasspeicher