For the 4 new caverns for hydrogen storage as described in the document "Market consultation wellhead and x-mas tree" Gasunie foresees the need for wellheads and x-mas trees. There is also a possibility that Gasunie will need wellheads and x-mas trees suitable for other media such as nitrogen, CO2 and natural gas. To get a clear insight into the possibilities in the market, it was decided to carry out a market consultation wellhead and x-mas tree. Gasunie invites suppliers to respond and greatly appreciates their contribution. Gasunie hopes to gain more clarity on the following points: • Are Gasunie's requirements relevant, realistic and achievable. In other words, can the market deliver wellheads and x-mas trees according to the scope Gasunie can currently provide. • Gather information from the market about wellheads and x-mas trees suitable for hydrogen, natural gas, CO2 and nitrogen applications as described in paragraph “1.5 Scope of the contract” in the document "Market consultation wellhead and x-mas tree"; • What solutions the market offers in relation to the questions and requirements of Gasunie; • Obtaining a cost indication to be able to set the target value of a tender as accurately as possible; • What does the market look like and what differentiates parties; • The expected trends and developments in the market of wellheads and x-mas trees. Gasunie wants to use the information obtained from the market to prepare a European tender for wellheads and x-mas trees. For the 4 new caverns for hydrogen storage as described in the document "Market consultation wellhead and x-mas tree" Gasunie foresees the need for wellheads and x-mas trees. There is also a possibility that Gasunie will need wellheads and x-mas trees suitable for other media such as nitrogen, CO2 and natural gas.

Information via Tenderned and e-mail The market consultation document has been made available free of charge and digitally via Tenderned, www.tenderned.nl. How do you participate in this market consultation? • Please submit the answers to the questions in “Annex 1 Form to respond to questions for the market consultation” • Send your answers no later than the date and time mentioned in paragraph 2.1 of the document "Market consultation wellhead and x-mas tree". • The attachment with the answers can be submitted via email to Mrs Antje van der Harst, [email protected]. • For questions about the market consultation, please contact Mrs Antje van der Harst by email. In case you are interested in the scope of the contract but are unable to send a response, Gasunie would like to hear from you. You can send an e-mail message to the above-mentioned contact person.