Installation of the 700-kilometer-long submarine fiber cable started at Green Mountain’s data center on Jun 6th. This new cable route connects the west coast of Norway with Newcastle and will significantly increase data capacity between Norway, the UK, and the rest of the world. The operation is now started and will be completed by the end of summer. The cable will be in operation in Q4 2021.

Behind the NO-UK project are the companies Green Mountain, Lyse, Haugaland Kraft, BKK, Hatteland Group and Ryfylke IKS. Together with the county mayor, these companies were present at Rennesøy to mark the event when the vessel Normand Clipper started the installation work. The work will continue throughout the summer and the cable will be operational this year.

NO-UK is part of a wider network of existing submarine and terrestrial (in-land) cables operated by Altibox Carrier.

- It is a great achievement to have reached this key milestone, which is the result of a significant effort by all parties engaged in this critical project. With the rapidly increasing demand for data worldwide, never has it been more pressing to develop our links with other countries. NO-UK will complement Altibox’s existing architecture and strengthen Norway’s connections globally. said Geir Ims, Chairman of NO-UK AS

- This cable project further strengthens Green Mountain’s position as the connectivity hub in the Southwestern part of Norway. We are now able to reach 54% of all businesses in Europe with sub 20 ms latency. Several international connectivity providers have already signed agreements and will be utilizing this new submarine cable as a new connectivity highway between Norway and the UK. With improved resilience and reduced latency, the Stavanger region now offers a realistic alternative to the data center cluster in London, said CEO of Green Mountain, Tor Kristian Gyland.

With the NO-UK cable soon to be realized, Norway’s value proposition of renewable energy, low electricity prices and stable framework conditions is further strengthened on the connectivity side as well.


The investment in the 700-kilometer-long submarine fiber cable is carried out by a consortium consisting of companies Lyse, Green Mountain, Haugaland Kraft, BKK, Ryfylke IKS, and Hatteland Group. With a transport capacity of up to 216 terabits per second, the subsea fiber cable will significantly increase the data capacity between Norway and abroad. The NO-UK cable is an open cable system providing a total of eight dark fibre pairs from Stavanger to Newcastle. Through Altibox Carrier the consortium can offer dark fibre or capacity backhaul routes to any major PoP in the Nordics or UK.

Green Mountain designs, builds and operates highly secure, innovative, and sustainable colocation data centers in Norway. The data centers operate on low cost 100% renewable power and the use of free cooling creates high power efficiency.

  • The data center near Stavanger (DC1-Stavanger) is built deep inside a mountain in a former high security NATO ammunition storage.
  • The data center in Telemark (DC2-Telemark) is in the ‘cradle of hydro power’ in Norway with close proximity to multiple local hydro power plants.
  • The data center at Enebakk (DC3-Oslo) is situated just outside Oslo, the capital of Norway.

Green Mountain is one of the largest data center operators in the Nordics and we experience strong growth. Among our clients are large international companies within Cloud, Banking/Finance, HPC, Automotive and more.

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