Milestone-Proposal:Gotland HVDC Link

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Docket #:

This Proposal has been approved, and is now a Milestone

To the proposer’s knowledge, is this achievement subject to litigation?

Is the achievement you are proposing more than 25 years old? Yes

Is the achievement you are proposing within IEEE’s designated fields as defined by IEEE Bylaw I-104.11, namely: Engineering, Computer Sciences and Information Technology, Physical Sciences, Biological and Medical Sciences, Mathematics, Technical Communications, Education, Management, and Law and Policy. Yes

Did the achievement provide a meaningful benefit for humanity? Yes

Was it of at least regional importance? Yes

Has an IEEE Organizational Unit agreed to pay for the milestone plaque(s)? Yes

Has an IEEE Organizational Unit agreed to arrange the dedication ceremony? Yes

Has the IEEE Section in which the milestone is located agreed to take responsibility for the plaque after it is dedicated? Yes

Has the owner of the site agreed to have it designated as an IEEE Milestone? Yes

Year or range of years in which the achievement occurred:


Title of the proposed milestone:

First commercial HVDC link, 1954

Plaque citation summarizing the achievement and its significance:

Commissioned in 1954, the Gotland HVDC Link is the world’s first commercial High Voltage Direct Current (HVDC) transmission link. It connected mainland Sweden and the island Gotland in the Baltic Sea using the world’s first submarine HVDC cable - 96 km long with mass-impregnated technology. The HVDC link was delivered to Vattenfall by ASEA, where Dr. Uno Lamm was instrumental in developing the mercury-arc valves in the converters.

In what IEEE section(s) does it reside?

IEEE Sweden Section

IEEE Organizational Unit(s) which have agreed to sponsor the Milestone:

IEEE Organizational Unit(s) paying for milestone plaque(s):

Unit: IEEE Sweden PE/PEL Chapter
Senior Officer Name: Olof Samuelsson

Unit: IEEE Sweden PE/PEL Chapter
Senior Officer Name: Lina Bertling

IEEE Organizational Unit(s) arranging the dedication ceremony:

Unit: IEEE Sweden PE/PEL Chapter
Senior Officer Name: Olof Samuelsson

Unit: IEEE Sweden PE/PEL Chapter
Senior Officer Name: Lina Bertling

IEEE section(s) monitoring the plaque(s):

IEEE Section: IEEE Sweden Section
IEEE Section Chair name: Mats Edvinsson

Milestone proposer(s):

Proposer name: Olof Samuelsson
Proposer email: Proposer's email masked to public

Please note: your email address and contact information will be masked on the website for privacy reasons. Only IEEE History Center Staff will be able to view the email address.

Street address(es) and GPS coordinates of the intended milestone plaque site(s):

N 57.587716 E 18.194615

Describe briefly the intended site(s) of the milestone plaque(s). The intended site(s) must have a direct connection with the achievement (e.g. where developed, invented, tested, demonstrated, installed, or operated, etc.). A museum where a device or example of the technology is displayed, or the university where the inventor studied, are not, in themselves, sufficient connection for a milestone plaque.

Please give the address(es) of the plaque site(s) (GPS coordinates if you have them). Also please give the details of the mounting, i.e. on the outside of the building, in the ground floor entrance hall, on a plinth on the grounds, etc. If visitors to the plaque site will need to go through security, or make an appointment, please give the contact information visitors will need. The proposed site of the plaque is at the converter station at the Gotland end of the HVDC link.

Are the original buildings extant?

The HVDC link has been upgraded several times and the plaque will be mounted in connection with the existing converter station.

Details of the plaque mounting:

The plaque will be mounted on at the fence of the converter station.

How is the site protected/secured, and in what ways is it accessible to the public?

The plaque will be visible from the public street outside the converter station.

Who is the present owner of the site(s)?

Vattenfall Eldistribution AB, the local distribution network owner.

What is the historical significance of the work (its technological, scientific, or social importance)?

What obstacles (technical, political, geographic) needed to be overcome?

What features set this work apart from similar achievements?

Supporting texts and citations to establish the dates, location, and importance of the achievement: Minimum of five (5), but as many as needed to support the milestone, such as patents, contemporary newspaper articles, journal articles, or chapters in scholarly books. 'Scholarly' is defined as peer-reviewed, with references, and published. You must supply the texts or excerpts themselves, not just the references. At least one of the references must be from a scholarly book or journal article. All supporting materials must be in English, or accompanied by an English translation.

Supporting materials (supported formats: GIF, JPEG, PNG, PDF, DOC): All supporting materials must be in English, or if not in English, accompanied by an English translation. You must supply the texts or excerpts themselves, not just the references. For documents that are copyright-encumbered, or which you do not have rights to post, email the documents themselves to Please see the Milestone Program Guidelines for more information.

Please email a jpeg or PDF a letter in English, or with English translation, from the site owner(s) giving permission to place IEEE milestone plaque on the property, and a letter (or forwarded email) from the appropriate Section Chair supporting the Milestone application to with the subject line "Attention: Milestone Administrator." Note that there are multiple texts of the letter depending on whether an IEEE organizational unit other than the section will be paying for the plaque(s).