Preliminary Investigation of Sites

Offshore wind farm

The Federal Maritime and Hydrographic Agency (BSH) investigates the areas designated in the Site Development Plan for tendering procedure by the Federal Network Agency (BNetzA) and wind farm construction. The marine environment, subsoil, wind and oceanographic conditions as well as the traffic suitability of the area are investigated and compiled in reports. Based on the results of the investigation, the BSH examines the suitability of the area. If the BSH comes to the conclusion that the site is suitable, it declares its suitability by statutory order and the results of the investigation are transmitted to the BNetzA for the tendering procedure. Furthermore, the results are made available via the Data Hub of the Preliminary Investigation of Sites.

Most of the investigations are not carried out by the BSH itself, but are commissioned within the framework of public tenders. The results of the investigations and reports are published by the BNetzA for the tendering of areas designated for the construction and operation of offshore wind turbines. On this basis, interested companies can submit bids for the amount of compensation they need.

The investigation results also serve the company that was awarded the contract in the tender procedure as a basis for the subsequent planning approval procedure to be carried out at the BSH. On this basis, the applicant will prepare an environmental impact study for the construction project.

Latest news

20.05.2022: Process to examine the suitability for sites N-6.6 und N-6.7

On 20 May 2022, the BSH notified that the draft of the suitability examination, the draft of the determination of suitability and the drafts of the environmental reports for the sites N-6.6 and N-6.7, which will be put out to tender in calender year 2028, will be publically displayed in Hamburg and Rostock in the period from 27 May 2022 to 27 June 2022.

Reference is made to the public notification.

The draft documents as well as the decision-relevant reports are published here on 27 May 2022 in German language.

25.02.2022: Public display of the documents on the determination of suitability for sites N-3.5, N-3.6 and N-7.2

On 18 January 2022, the Federal Maritime and Hydrographic Agency (BSH) determined the suitability of sites N-3.5, N-3.6 and N-7.2 for tendering by the Federal Network Agency pursuant to Part 3 Section 2 of the WindSee Act by means of a statutory order. The Second Ordinance on the Implementation of the Wind Energy at Sea Act (2.WindSeeV) was published in the Federal Law Gazette (BGBl I 2022, page 58) on 27 January 2022.

In accordance with section 12 paragraph 5 sentence 8 of the WindSeeG in conjunction with section 44 paragraph 2 of the UVPG, the BSH shall make the following documents available for inspection in its libraries:

  • Second Ordinance on the Implementation of the Wind Energy at Sea Act of 18 January 2022
  • Suitability assessment
  • Environmental Report N-3.5
  • Environmental Report N-3.6
  • Environmental Report N-7.2
  • Summary declaration (German)

Reference is made to the public announcement.

Below you will find the documents on display as well as supplementary information:

SiteDocumentDate*
N-3.5, N-3.6, N-7.2Suitability assessment25.02.2022
Suitability determination (2nd WindSeeV)27.01.2022
Supplementary summary environmental statement25.02.2022
N-3.5Environmental report25.02.2022
N-3.6Environmental report25.02.2022
N-7.2Environmental report25.02.2022

* of publication on the BSH website.

25.02.2022: Results of the preliminary investigation of sites N-3.5, N-3.6 and N-7.2 published

The BSH has conducted preliminary investigations of the sites N-3.5, N-3.6 and N-7.2 (bitte Flächenseiten verlinken) in accordance with Sec. 12 para 1 sentence 1 in conjunction with Sec. 10 para 1 of the WindSeeG. The results of the investigations are publicly available via the Data Hub of the Preliminary Investigation of Sites under the link below as of 25.02.2022.

For purely informational purposes, the results of the preliminary investigations of site N-7.2, which is scheduled for tender in 2022, has been summarized in a brochure (only available in German). This can be obtained in printed form from the BSH and downloaded under the link below.

FlächeDokument / Link zum DatenportalDatum*
N-3.5, N-3.6 und N-7.2Access to the Data Hub for Preliminary Investigations of Sites N-3.5, N-3.6 and N-7.225.02.2022
N-7.2Brochure on the results of the Preliminary Investigation of Site N-7.2 (German)25.02.2022

* of publication on the BSH website.

07.10.2021: Feedback request regarding the Data Hub Preliminary Investigation of Sites until October 31th, 2021

The BSH investigates the areas in the German EEZ designated in the Site Development plan for tendering procedure by the BNetzA and wind farm construction.

On February 26th, 2021, with the publication of the results for download for the areas N-3.7, N-3.8 and O-1.3, the data, evaluations and reports of the preliminary investigation were made available for the first time via the BSH's Data Hub Preliminary Investigation of Sites. With the announcement of the results of the first auctions for the pre-investigated areas N-3.7, N-3.8 and O-1.3 using the central model by the BNetzA on September 9th 2021, an important milestone was reached.

In order to further enhance the user-friendliness of the Data Hub Preliminary Investigation of Sites for the upcoming tendering procedures, the BSH is interested in your experiences and kindly requests your feedback by October 31th, 2021 using this questionnaire.

The questionnaire, which is available in German and English, is designed in topic blocks and covers the use of the data hub in general, the provided data from the subsoil with geophysics, hydrography, geotechnic and geodata, the marine environment data as well as oceanography and wind, suitability and environmental assessment. Since it is possible to skip individual topic blocks, it is not necessary to answer all questions. You will need 15 to 20 minutes to answer. The BSH is grateful for your support!

16.04.2021: Procedural instructions for the reimbursement of necessary costs pursuant to § 10a WindSeeG

The BSH provides procedural instructions and forms for the reimbursement of necessary costs for investigations pursuant to § 10a of the WindSeeG.

Erstattung von notwendigen Kosten für Untersuchungen gemäß § 10a Windenergie-auf-See-Gesetz (only available in German)

The following forms have been published (only available in German):

FormDate
Formular für die Einräumungserklärung gemäß § 10a Absatz 5 WindSeeG16.04.2021
Formular Liste der nach § 10a Absatz 2 Satz 2 WindSeeG übermittelten Untersuchungsergebnisse und Unterlagen16.04.2021

16.04.2021: Publication of reports for sites of tender years 2022/23

The BSH published reports relevant to the decision-making process in the context of the procedures for the suitability assessment of areas N-7.2, N-3.5 and N-3.6. The publication was announced on 16.04.2021 in the Notices to Mariners (NfS) and on the BSH website.

Reference is made to the public announcement of 16.04.2021.

Furthermore, reference is made to the public announcement of 12.03.2021 concerning the publication of the draft suitability assessments, suitability determination, and environmental reports for the named sites.

The following documents were published (only available in german):

SiteDocumentDate
N-7.2Endbericht Benthos, Biotoptypen und Fische16.04.2021
N-3.5Endbericht Benthos, Biotoptypen und Fische16.04.2021
N-3.6Endbericht Benthos, Biotoptypen und Fische16.04.2021