Demand for gas transmission capacity in Baden-Württemberg is steadily rising. And we are reacting to this trend by developing our gas transmission system in line with demand.
For Baden-Württemberg, the Gas Network Development Plan (German: NEP Gas) plans to connect the Ludwigsburg/Enzkreis region to the "Schwaben pipeline" gas transmission system.
Through the Neckarenztal pipeline, we can sustainably increase the security of supply in Baden-Württemberg and in particular in the Ludwigsburg/Enzkreis region for both gas and electricity – also at peak load times.
In addition to this, connection to the west European transmission system via Trans Europa Naturgas Pipeline (TENP) is secured and improved by connecting to the Nordschwarzwald pipeline. Construction of the Neckarenztal pipeline began near the community of Wiernsheim at the beginning of March 2022 and will be continued eastwards via Eberdingen, Vaihingen a. d. Enz, Oberriexingen, Sachsenheim and Bietigheim-Bissingen to south of Löchgau. The new pipeline should start operating in 2022.
terranets bw complies with all legal and official stipulations regarding environmental protection and avoiding or minimising the impact of construction on citizens as well as the farming industry.
Impairments related to pipeline construction cannot, however, be totally avoided, including temporary closure of paths and access roads. Closures are kept to as short as possible and normally last only a few hours.
Small-scale diversions or cycle path bridges are provided by terranets bw.
An overview of temporary closures that are necessary for pipeline construction can be viewed in the following overview:
Gas and its transmission network are future-proof partners for the successful implementation of the energy transition during the transition phase to renewable energy sources. According to sections 1 and 11 of the Energy Industry Act (EnWG), terranets bw is obliged to operate a secure, reliable and powerful gas transmission system and to develop its network in line with demand due to the continually increasing demand for gas shipping capacities in Baden-Württemberg. The nationwide coordination of development requirements takes place in the scope of the Network Development Plan Gas (NDP Gas). This plan sets out all measures for optimising, strengthening and developing the network in line with demand as well as for guaranteeing the security of supply needed in the next ten years to ensure safe and reliable network operation. The measures listed in the NDP Gas are reviewed and confirmed by the Federal Network Agency. The measures stated in the NDP Gas are binding and to be implemented in accordance with section 15a of the Energy Industry Act (EnWG).
In order to keep pace with increasing capacity demand in Baden-Württemberg, terranets bw is developing its gas transmission system. For Baden-Württemberg, the NDP plans to connect the Ludwigsburg/Enzkreis region to the "Schwaben pipeline" transmission system.
The Neckarenztal pipeline sustainably increases the security of supply in Baden-Württemberg, in particular in the Ludwigsburg region both for gas and electricity, also at peak load times. In addition to this, by connecting to the Nordschwarzwald pipeline commissioned in 2016, connection to the west European transmission system via the Trans Europa Naturgas Pipeline (TENP) was also secured and improved.
For Baden-Württemberg, the Gas NDP plans to connect the Ludwigburg/ Enzkreis region to the "Schwaben pipeline" gas transmission system. The new pipeline is to begin in the Wiernsheim region and run via Vaihingen, Bietigheim-Bissingen to south of Löchgau.
According to the Network Development Plan, terranets bw is obliged to connect the Ludwigsburg/ Enzkreis region to the Schwaben pipeline. In order to find the best route, terranets bw adheres to various routing principles. The routing criteria are coordinated with the approving authority (regional council) and are compared and weighed up against each other, if necessary, by these bodies.
In order to reach a broad consensus, a two-tier approval procedure is carried out (spatial planning procedure, planning approval procedure).
Since 2016, terranets bw has been informing affected communities and towns about route options and welcomes insights and ideas. terranets bw agrees on participation formats and participants within the scope of the early public participation with the communities and the responsible authority (regional council) (s. Guideline for a new planning culture of the State Administration of BW).
In order to reach a broad consensus with all stakeholders, a two-tier approval procedure is carried out.
In order to reach a broad consensus with all stakeholders, a two-tier approval procedure is carried out:
The competent approving authorites are the regional councils of Karlsruhe and Stuttgart.
Spatial planning procedure (ROV) according to sections 18, 19 LPlG
For spatially significant planning with regional importance, the spatial compatibility is assessed in the spatial/regional planning procedure (ROV). This means whether and under what circumstances the Neckarenztal pipeline is compatible with the aims and principles of regional and state planning. Therefore, terranets bw developed alternative routes, weighing up assets worthy of being protected against each other and submitted various routing options to the regional planning authority. Subsequently, the application documents were publicly displayed in the local communities for one month. The competent authority, the Stuttgart regional council, assessed the fundamental spatial compatibility of the project after listening to the affected communities and public interest groups. The resuls of the spatial planning procedure and the regional planning assessment are included in the planning approval procedure.
Planning approval procedure (German: PFV) according to sections 43 ff of the Energy Industry Act, sections 72ff VwVfG
Considering the results of the regional/spatial planning procedure (ROV), terranets bw refined the route planning, conducted an environmental impact assessment and applied for planning approval with the competent authority.
In the planning approval procedure, all planning documents are publicly displayed in the communities and online for one month. Public interest groups and associations whose statutory remit is influenced by the approval decision are consulted. The regional council then weighs up all the public and private concerns affected by the planning. The respective planning approval authority approves the route including specific plot-by-plot plans with its planning approval decision.
The competent approval authorities are the regional councils of Karlsruhe and Stuttgart.
To use land for building the route, pipeline rights in the form of permission contracts must be drawn up with all the affected land owners and managers. A limited personal easement to be granted by the land owner secures this permission in the land registry. The plot or land owner receives a one-off payment. This depends among other things on the size of the pipeline´s protective strip. Fixed compensation rates are used as a basis for calculations. terranets bw also pays for any loss of income normally generated by the land or for any damages that arise as a result of works related to laying the pipeline.
terranets bw as the owner guarantees safety. By commissioning independent technical experts (usually TÜV), the integrity and safety of the construction measures are checked. Before experts are commissioned, they undergo a strict prequalification process. Safety and hazard coordinators guarantee compliance with appropriate working conditions on the construction site in order to avoid accidents.
Operation and maintenance are handled by professionally qualified personnel of terranets bw. The 2,000 km long transmission system and the related systems of terranets bw are monitored and controlled by a 24/7 control centre. By means of remote-controlled valves, single sections can be shut off instantly. Alongside regular maintenance and prompt implementation of necessary maintenance and repair measures in accordance with technical specifications, the pipelines are regularly checked from the air, from the road and during on-site inspections.
It is planned that the construction phase of the Neckarenztal pipeline will be completed by the end of 2022. The construction and commissioning phases of the Neckarenztal pipeline are expected to last approx. 1.5 years. The single construction sections of the locally continuous construction site, in particular on private land, will take about three months. Restoration of the used areas is expected to be finished in the year 2023.
Throughout the whole construction process, terranets bw takes numerous precautions that support the best possible conservation of nature, thus minimising any impact. The process begins with an environmental impact assessment – in cooperation with authorities and associations the impact on protected assets such as plants, animals, ground, water, climate/air, landscape and people as well as on culture and other material assets are checked and evaluated on the basis of a detailed inventory and assessment of nature and landscape. Based on these audit results, steps are developed to avoid or reduce impairments and compensation measures are defined, which then form part of the planning approval decision as ancillary provisions. The environment will be restored (renaturation measures) subsequent to construction of the Heilbronn connection pipeline. Unavoidable and permanent impacts will be compensated by means of suitable measures (compensation measures). In the event that damages occur despite all the mentioned precautionary steps, compensation and replacement of damages will be provided.
Pipeline construction requires temporarily occupying agricultural land for the working strip. The areas on both sides of this working strip can continue to be used during the construction phase. As far as possible, terranets bw strives to minimise harvest downtimes and, when necessary, compensates such downtimes according to fixed compensation rates. When terranets bw has finished using the land, it is recultivated so that the agricultural use of this land is not significantly impaired.
Early, voluntary puplic participation as part of five dialogue markets in March 2019: roughly 2/3 of the comments noted could be taken into consideration during the planning of the pipeline route.
The route is carefully planned and with respect for the environment and local residents, including wildlife conservation mapping and topographic surveying.
Numerous preparatory measures begin more than two years prior to the actual pipeline construction. This includes archeological surveys carried out in cooperation with the State Office for the Preservation of Monuments with the aim of documenting findings and maintaining their value as cultural assets. Here: excavations at Großsachsenheim in October 2021.
A view behind line pipe production – the roughly 16-metre-long and approx. 2.5 tonne pipes undergo a range of safety tests and leave the factory in Hamm/Westfalen only after they are certified by TÜV.
A total of five storage places for the line pipes are erected in the regions along the pipeline route. Delivery of the pipes began in November 2021.
At the beginning of March 2022, construction of the "NET" began officially with the so-called "digger bite" near the community of Wiernsheim.
On 16 March 2022, terranets bw celebrates commencement of NET´s construction with a symbolic groundbreaking ceremony at the newly errected gas pressure control and metering system near Wiernsheim. Christoph Kröhnert, NET project manager, Karlheinz Oehler, mayor of the Wiernsheim community at that time, Andreas Dötsch, senior construction manager of ARGE NET, and Thomas Beyer, CEO of Anton Meyer GmbH & Co. KG performed the groundbreaking ceremony together.
The NET construction is implemented as a line construction site. This means single work processes are efficiently performed following the pipeline route. Depending on local circumstances, between 200 and 400 metres of line pipe are laid in one working day.
On 9 July 2022, a "Construction Site Open Day" in Sachsenheim gave numerous interested people the opportunity to visit the NET construction site and inform themselves about the infrastructure project. Experts were present to answer questions and talk about the project; visitors were also able to take a look into the pipeline ditch and over the shoulders of the archeologists.
We are happy to inform you about the current project progress in our German online newsletter "News from the NET pipeline" (German: "Neues von der NET"). In the various sections, you also meet the project team and the pipeline planners.
"Neues von der NET" - Ausgabe 19/ September 2022
Content: Extraordinary Construction
"Neues von der NET" - Ausgabe 16 / April 2022
Content: Construction start, symbolic groundbreaking ceremony, work processes on a line construction site
"Neues von der NET" - Ausgabe 15 / Dezember 2021
Content: Preparing for construction, view behind the scenes of pipe production
"Neues von der NET" - Ausgabe 14 / Juli 2021
Content: Application for planning approval granted; construction of a gas pressure control and metering system
"Neues von der NET" - Ausgabe 13 / Juli 2020
Content: Preparing for construction
"Neues von der NET" - Ausgabe 12 / April 2020
Content: wildlife conservation
"Neues von der NET" - Ausgabe 11 / November 2019
Content: Start of planning approval procedure
"Neues von der NET" - Ausgabe 10 / Juli 2019
Content: Current planning status, preparing planning approval application
"Neues von der NET" - Ausgabe 09 / April 2019
Content: Current planning status, insights gained in the dialogue markets
"Neues von der NET" - Ausgabe 08 / Jan 2019
Content: Conclusion of spatial planning, start of detailed planning
"Neues von der NET" - Ausgabe 07 / Sep 2018
Content: Construction of a pipeline and nature conservation
"Neues von der NET" - Ausgabe 06 / Juni 2018
Content: Spatial planning and interview with C. Götzel-Kiefer (Stuttgart Regional Council)
"Neues von der NET" - Ausgabe 05 / März 2018
Content: Spatial planning and cold wave February 2018
"Neues von der NET" - Ausgabe 04 / Dez 2017
Inhalte: Spatial planning and interview witht MD Helmfried Meinel
"Neues von der NET" - Ausgabe 03 / Sep 2017
"Neues von der NET" - Ausgabe 02 / Mai 2017
Content: Approval procedure and citizen dialogue
"Neues von der NET" - Ausgabe 01 / Feb 2017
Content: Route planning, project time planning and NDP Gas