HVDC
From Energy-Experts
There are interesting arguments for a world-wide grid of HVDC transmission lines at:
http://www.carbonfree.co.uk/cf/news/wk10-07-0001.htm
There is more on the same theme at http://www.trec-uk.org.uk/transmission/hvdc_article1.htm . and at http://www.trec-uk.org.uk/transmission/HVDC_grids.htm .
Gerry Wolff
Long distance power cables in Scandinavia installed capacity and generation mix in Scandinavia:
From: Peter Namtvedt
Sent: 01 March 2006 17:11
To: David Andrews
Subject: long distance power cables
The cable originally planned by Statnett (Norwegian National Grid Operator) was proposed to be two parallel cables in total being able to transport 1200 MW. This would mean that the cable would be able to import/export 10% of the Norwegian electricity load in what is described as a typical “dry” Norwegian year. The cable called NSI (North Sea Inter-connector) would go from Suldal in Norway to Easington, close to Sunderland in the UK. The length would be 750 KM and the cost was approximately 700 million GBP. Had everything gone according to plan it would be put into operation end of 2007, beginning of 2008, however the plans were finally rejected by Norwegian authorities in September 2003.
When it comes to windmills we do not have any experience in evaluating asset investments. One would need to know the level of public financial support in the project and cost of capital. Sligthly outside our core business! Best regards,
Peter B. Namtvedt Area Manager UK
From: David Andrews
Sent: 23 February 2006 13:18
To: Peter Namtvedt
Subject: long distance power cables
Peter – do you know anything about a proposed UK - Norway power cable, or perhaps that should be Norway - UK, apparently proposed a few years ago?
Best Regards
Dave Andrews
Original Message From: Peter Namtvedt
Sent: 02 February 2006 13:40
To: David Andrews
Subject: long distance power cables
Viking Cable was supposed to be 578 KM. (359 miles) The total investment would be 3.8 Billion Norwegian Kroner which equals approx. 322 Million GBP. This was for a 600 MW cable. If they were to use a 1200 MW cable the investment would be 5.1 Billion Norwegian Kroner which equals approx 432 Million GBP.
Re. Wind: Absorption is not a problem, but it requires large quantities of thermal stand by generation when wind is running hence increasing the volatility in day ahead pricing. Best regards,
Peter B. Namtvedt Area Manager UK
From: David Andrews
Sent: 02 February 2006 13:04
To: Peter Namtvedt
Subject: long distance power cables
Thanks Peter – I meant from all the aspect you listed.
But is seems that from what I have read there are no real problems in absorbing that amount of power, allowing the reduction of thermal output.
Any idea of the costs of long distance submarine cables and the length anticipated for the Viking cable?
Many thanks
Dave Andrews
Original Message
From: Peter Namtvedt
Sent: 02 February 2006 12:55
To: David Andrews
Subject: RE: Bergen presentation notes (30 Jan 2006)
Hi Dave, Ref. Wind power experience, is that from a price, environmental or public perception viewpoint.
From a price perspective Wind power is today contributing between 0 and 2000MW daily load onto the Danish system. I just talked to one of the analysts and he said that the prognosis for today was an average delivery of just 43 MW. The result of Denmark’s wind power has been to increase the volatility of the day ahead market in the Scandinavian market. Wind is an unreliable source and will never be able to provide Baseload power without having thermal backup and is therefore almost an adhoc generation source.
The volatility in the day ahead market has been exacerbated by the fact that in very cold periods there is usually minimal to zero wind production.
Re. Hydro feed to Germany, I do not have an overview of when the cables were connected to Germany, but the first cable connecting Germanys neighbour Denmark to a hydro area (Norway) was in the 1970’s through a 540 MW cable. Today Germany have 1950MW of capacity to Denmark and 600MW of capacity to Sweden. There were plans of a direct interconnector between Norway and Germany called the Viking Cable, but these plans were terminated in 2001.
Best regards,
Peter B. Namtvedt Area Manager UK
From: David Andrews
Sent: 01 February 2006 17:55
To: Peter Namtvedt
Peter,
Thanks you very much for coming back so promptly. I am not sure if I asked, but do you have access to any reviews of the Danish wind power experience?
Also can you confirm whether or not a power line was run down to Germany in the 70s to feed hydro to Germany…..details appreciated,.
Many thanks
Dave Andrews
Original Message
From: Peter Namtvedt
Sent: 01 February 2006 17:48
To: Bob Carne
Subject: RE: Bergen presentation notes (30 Jan 2006)
Dave ref. your questions on installed capacity and generation mix in Scandinavia:
Installed capacity
Thermal
Wind Nuclear
Hydro
Country
Sweden 16.55 GW
11%
49%
40%
Denmark 4.00 GW
87% 13%
Finland
9.70 GW
61%
27%
12%
Norway 12.10 GW
1%
99%
Total 42.35 GW
11,34 GW 0.52 GW
10.80 GW 19.69 GW
Best regards,
Peter B. Namtvedt Area Manager UK
