Network access

Gasunie offers every gas supplier non-discriminatory access to our transmission network. This way, we set to create the basis for a thriving gas network in Germany and thereby fulfilling the conditions for an united European internal market for energy supply.

Gasunie offers a set of transparent and non-discriminatory transport services. This benefits a competitive market which is positive for the industry, business and private consumers.  They will have the opportunity to choose the right provider for them. Consequently, competition does lead to a decline of the energy prices.

With the second amendment of the German Energy Industry Act (EnWG) implemented, the model for regulated network access in Germany was established. This amendment was carried out in 2005 and is regulated by the Cooperation Agreements (KoV) that concludes the gas network operators. The set of rules set out here written down in the General Terms and Conditions of Gasunie.

In addition to the EnWG, the legal framework for gas transport is determined by the Gas Network Access Ordinance (GasNZV) and the Gas Network Fee Ordinance (GasNEV).


Additional information


Transport takes place in a so-called entry-exit system by using entry and exit contracts between Gasunie and the shippers. TSO's in Germany have formed market area's and each market area has a manager assigned who performs tasks provided by GasNZV. Moreover, a market area manager is also responsible for acting as a contractual partner in handling the cooperation agreement. Germany has two market areas: Gaspool and Net Connect Germany (NCG). No later then 2022, these market area's will merge, creating one area for entire Germany. Currently, each market area has it's own virtual trading point, where gas can be traded and transfer of gas quantities between balancing groups is made possible.

Booking entry and/or exit capacity by the shipper is carried out by the corresponding entry or exit network operator of a certain area, this also holds true for Gasunie.

Booked entry and/or exit points must be included in balancing groups before the capacities are used. Gaspool Balancing Services GmbH offers this service for the market area where Gasunie operates. When it comes to balancing group contracts, the balancing group manager must ensure on a hourly basis that the sum of balancing group feed-ins are equal to the sum of balancing group feed-outs.

Market area GASPOOL

Market area Gaspool is being operated by Gasunie and the following other transmission system operators:

  1. GASCADE Gastransport GmbH
  2. Gastransport Nord GmbH
  3. Nowega GmbH and
  4. Ontras GmbH 
  5. jordgas (also involved in the market area cooperation,due to integration of the H-gas market)

The headquaters is based in Berlin. Together Gaspool determines the operation of the quality overlapping market area Gaspool. On average this consists of 350 distribution system operators.

When you would like to know more about GASPOOL, please have a look at their site.

Wat is a Market area?

The cooperation agreement contracted parties have defined market areas for cross network transport. A market area is a combination of (sub) networks interconnected via interconnection points. Shippers can use this transport network in a flexible manner to use booked capacity at entry and exit points. A market area starts at an entry point of a (partial) network belonging to a TSO and extends to an exit point. This exit point can refer to a storage, a interconnection point between final consumers or market areas, a hub or a export point. Every exit point to final customers is also assigned to a specific market area.

Transportation within a market area is established by entry and exit contracts. Before commencing and handling of the transport can take place, entry and exit points that are booked have to be allocated to a specific balancing group. Gaspool Balancing Services GmbH acts on behalf of the TSO that are active within marketing area Gaspool to manage this process.



Market area GASPOOL has a Virtual Trading Point (VTP) where gas volumes can be traded after feed-in and before the feed-out within the market area. The GASPOOL hub enables virtual purchase and/or sales of gas quantities without booking capacity. Besides, gas quantities can also be transferred between balancing groups. the gas quantities are not assigned to a specific physical entry or exit point. Trading partners only need a balancing group for the GASPOOL market area. Access to the GASPOOL Hub is furthermore automatically granted by entering into a balancing group contract.

When the trading process starts, then a specific gas quantity for a certain time period is nominated by the seller from his own balancing group. The nomination also contains the balancing group number of the buyer. In response, the buyer also nominates a quantity for the corresponding time period into his own balancing group mentioning the vendors balancing group number. Ideally both of the gas quantities are the same. GASPOOL is assigned with the task to check the quantities during the matching process. If a mismatch occurs, the lower quantity of the two is allocated.

GASPOOL publishes essential information such as the monthly trading volumes, cumulative annual volumes and churn rates on the GASPOOL Hub.

VTP & changing your supplier

The Virtual Trading Point also provides the possibility to change a supplier without additional capacity checks. All the exit points of a market area can be accessed from the VTP. The transition of capacities when changing a supplier covers all the capacities from the end customer to the VTP of that market area.