Preliminary investigations regarding the Hesselø site (original and new site)

In relation to the tendering of Hesselø Offshore Wind Farm, a range of preliminary investigations and environmental assessments are being carried out.

Results in the form of reports and data from the completed investigations can be accessed directly here at this site (reports) and through access to a FTP site (data), which is maintained by Energinet. All results from the preliminary investigations etc. are targeted potential bidders for Hesselø OWF.

Access to Energinet's FTP site

Access to Energinet’s FTP site is obtained in the following way:

Step 1: Interested bidders can request access to the data by notifying the Danish Energy Agency. Send the request to Randi Lucie Aliaga (rla@ens.dk) or Anders Møller Jørgensen (anmj@ens.dk) and include the following information:

  1. Applicant name (company name or name of the consortium)
  2. Applicant’s contact person, (name)
  3. Applicant’s contact person, (email)
  4. Applicant’s contact person, (telephone number)

Step 2: Energinet will thus send instructions to the applicant on access to the FTP server with username and password.

The FTP website will be updated for the new site. Reports, which are related to the environment and other reports, which do not require FTP server, will be posted on this page.

New site

Data and results from preliminary investigations (new site)

Below you can find the list of preliminary investigations to be carried out. There is also an indication of when each report is expected to be published.

Link for list with brief explanatory notes: Preliminary investigation deliveries 

Metocean 

ID

Deliverable

Date

2100

Measurement Plan

2023-06-30* 

2102 Measurements (data)   2024-09-30* 
2103 Measurement Reports   2024-09-30* 
2104 Site Metocean Conditions Assessment Report  2024-08-14* 
2105 Site Wind Conditions Assessment Report  2024-08-14* 
2106 Site Ice Conditions Assessment Report  2024-08-31* 
2107 Statement of feasibility from Certification Body  2024-09-30* 
2108 Reverification note for Site Metocean Conditions Assessment Report  2025-11-30* 
2109 Reverification note for Site Wind Conditions Assessment Report  2025-11-30* 

 

*Dates are tentative and will be updated when confirmed.

 

Environmental assessments and permits 

ID Delivery Date
2201 Scoping of Strategic Environmental Assessment (SEA) for Hesselø OWF
(Afgrænsning af miljøvurderingen af planen for Hesselø Havvindmøllepark) 
Published 
2202 Scoping of Environmental Impact Assessment (EIA) of the land-based project for Hesselø OWF
(Udtalelse om afgrænsning af indholdet i miljøkonsekvensrapporten for landanlæg til Hesselø Havvindmøllepark) 
Published 
2203 Environmental report (SEA) for Hesselø OWF – public consultation
(Offentliggørelse af miljørapporten for Hesselø Havvindmøllepark) 
Feb 2024* 
2204 SEA summary statement 
(Sammenfattende redegørelse for miljøvurderingen af planen) 
expected feb 2024* 
2205 EIA report for the land-based project – public consultation  expected feb 2024* 
2206 EIA permit for land-based project obtained  
(VVM-tilladelse til landanlæg meddelt) 
expected medio 2024* 
2207 Planning documents for Hesselø OWF onshore elements 
Plangrundlag (landsplandirektiv)
expected medio 2024* 

 

*Dates are tentative and will be updated when confirmed.

 

Technical reports and reports on environment

ID Delivery Date
2208 Visibility analysis Feb 2024*
2209 Benthic fauna and flora 2024-12-01*
2210 Marine mammals (1 year) 2024-12-01*
2212 Birds (1 year) 2024-12-01*
2214 Bats 2024-12-01*
2215 Fish and fish populations 2024-12-01*
2216 Fisheries 2024-12-01*
2217 Underwater noise and vibrations 2024-12-01*
2218 Radar and radio interference 2024-12-01*
2219 Marine traffic and safety of navigation (HAZID) 2024-12-01*

 

*Dates are tentative and will be updated when confirmed.

 

Seabed investigations 

ID Delivery Date
2301 Geology and sea-level, desk study 2023-08-01
2302 Marine archaeology: Archaeological analysis, desk study 2023-08-01
2303 Geophysical site survey, report 2024-07-01
2304 Preliminary geotechnical investigations, report 2024-07-01
2305 Integrated 3D geological model 2024-09-01
2306 UXO threat and risk assessment, report 2023-12-01
2307 Marine archaeology: Geoarchaeological analysis, report 2024-09-01
2308 Export cables, cable route survey report 2024-09-01*
2309 Export cables, Cable Burial Assessment 2024-09-01*
2310 Export cables, Landfall Site investigations 2024-09-01*

 

*Dates are tentative and will be updated when confirmed.

Old site (Cancelled)

Data and results from preliminary investigations

Below you can find the list of all investigations to be carried out, including notes describing the reports. There is also an indication of when each report is expected to be published. Read the notes

ID

Deliverable

Date

Note

 

 

 

 

100

MetOcean

 

 

101

Lidar Final Report

Published

Note 7

102

Site Wind Conditions Assessment

Published

Note 8

103

Reports on Ocean data  (Hindcast)

Metocean Conditions Assessment
Hesselø - Ice Assessment
Certification Report - Metocean and Ice Conditions
Statement of Feasibility

 

Published

Note 9

 

 

 

 

200

Environmental assessments and permits

 

 

201

Scoping of strategic environmental assessment (SEA) for Hesselø OWF

(Afgrænsningsudtalelse for strategisk miljøvurdering (SMV) af Hesselø Havvindmøllepark)

Published

Note 10

202

Scoping of environmental impact assessment (EIA) of the land-based project for Hesselø OWF (Afgrænsningsudtalelse for miljøvurdering (VVM) af landanlægget til Hesselø Havvindmøllepark)

Published

Note 11

203

Planning consent for extension of Hovegård substation and new Pårup substation approved and made public

(Landsplandirektiv for udvidelse af Hovegård højspændingsstation og ny kompenseringsstation ved Pårup vedtaget og publiceret)

2022

Note 12

204

Environmental Statement/SEA report for plan Hesselø OWF made public

(Offentliggørelse af miljørapport (SMV) for planen for Hesselø Havvindmøllepark)

April 2022

Note 13

205

EIA report for the land-based project submitted and made public

(Miljøkonsekvensrapport for landanlæg til Hesselø Havvindmøllepark i høring)

April 2022

Note 14

206

EIA permit for land-based project obtained (VVM-tilladelse til landanlæg meddelt)

Mid-2022

Note 15

207

SEA summary statement

(Sammenfattende redegørelse for strategisk miljøvurdering (SMV))

Mid-2022

Note 23

 

 

 

 

 

Technical reports and reports on environment

 

 

208

Birds

Ornithological assessment in relation to plans for offshore wind farm development in the Hesselø area, Kattegat

Published

Published

Note 1

209

Marine mammals - technical report

Published

Note 16

210

Benthic flora and fauna: Hard bottom - Technical report
Benthic flora and fauna: Soft bottom - Technical report
Benthic Soft bottom - Appendix 2 (Sediment sample analysis)

Published

Note 17

211

Visualiseringsrapport – Hesselø Havvindmøllepark – eksempelvisualiseringer
Synlighedsanalyse - Teknisk rapport

Published

Note 18

212

Navigational risk assessment of Hesselø offshore wind farm - Risk Assessment Report

Published

Note 19

213

Radar and radio interference - Technical report

Published

Note 20

214

Fish – technical report
Fisheries – technical report

Published

Note 21

215

Underwater noise – technical report

Published

Note 22

 

 

 

 

300

Seabed investigations

 

 

 

Geophysical survey

 

 

301

Geophysical survey report, wind farm site

3D Seismic Survey Report

Published

 

Note 1

302

Export cables routes survey report

Published

Note 1

303

Hydrographical Report, wind farm site

Published

Note 2

304

Hydrographical report, export cable routes

Published

Note 3

305

Marine Archaeology

Geoarkæologisk Analyse – Offshore Wind Farm

Geoarkæologisk Analyse OWF

Geoarkæologisk Analyse OWF - Bilag

Geoarkæologisk Analyse – Export Cable Corridor

Geoarkæologisk Analyse ECR

Published

Note 4

306

UXO risk assessment report

Desk study for potential UXO contamination – Hesselø windfarm site

Desk study for potential UXO contamination – Hesselø export cable route

Published

Note 1

 

Geotechnical investigations

 

 

307

Geological desk study

Published

Note 1

308

Final Factual Geotechnical Report

Published 

Note 5

309

3D geological model reports

Integrated Geomodel
Integrated Geomodel - Enclosure 1

Published

Note 6

310

Desk study: Metocean weather windows

Published

Note 1

311

Landfall HDD - Geotechnical investigations – Gilbjerg Hoved

Published

 

 

Download GIS files

 

GIS files for the site of Hesselø OWF (zip) and the export cables towards the landfall at Gilbjerg Hoved (zip)

Randi Lucie Aliaga
Special Advisor (+45) 3392 7835
Anders Møller Jørgensen
Advisor (+45) 3395 5113