Name |
Converter Station 1 |
Converter Station 2 |
Length of Cable |
Length of overhead line |
Voltage |
Transmission power |
Inauguration |
Remarks |
Elbe-Project |
Dessau, Germany |
Berlin-Marienfelde, Germany |
100 km |
- |
+-200kV |
60 MW |
1945 |
never placed in service, dismantled |
Moscow-Kashira |
Moscow, Russia |
Kashira, Russia |
100 km |
- |
200 kV |
30 MW |
1951 |
built of parts of HVDC Elbe-Project, shut down (when?) |
Gotland 1 |
Västervik, Sweden |
Ygne, Sweden |
98 km |
- |
200 kV |
20 MW |
1954 |
shut down in February 1986 |
HVDC Cross-Channel |
Echingen, France |
Lydd, UK |
64 km |
- |
+-100kV |
160 MW |
1961 |
shut down in 1984 |
Konti-Skan 1 |
Vester Hassing, Denmark |
Stenkullen, Sweden |
87 km |
89 km |
250 kV |
250 MW |
1964 |
replaced in August 2006 by modern converters using thyristors |
HVDC Volgograd-Donbass |
Volzhskaya, Russia |
Mikhailovskaya, Russia |
- |
475 km |
+-400kV |
750 MW |
1964 |
|
HVDC Inter-Island |
Benmore Dam, New Zealand |
Haywards, New Zealand |
40 km |
570 km |
+270kV -350kV |
1200 MW |
1965 |
upgraded in 1991. Pole 1 of this system still uses mercury arc rectifiers, one of the last such systems in the world to continue with this technology. Pole 2 is thyristor bridge. |
HVDC back-to-back station Sakuma |
Sakuma, Japan |
Sakuma, Japan |
- |
- |
+-125kV |
300 MW |
1965 |
replaced in 1993 by new converter using light-triggered thyristors |
SACOI 1 |
Suvereto, Italia |
Lucciana, Corse; Codrongianos, Sardinia |
304 km |
118 km |
200 kV |
200 MW |
1965 |
replaced in 1986 by thyristors, multiterminal scheme |
HVDC Vancouver Island 1 |
Delta, British Columbia |
North Cowichan, British Columbia |
42 km |
33 km |
260 kV |
312 MW |
1968 |
|
Pacific DC Intertie |
Celilo, Oregon |
Sylmar, California |
- |
1,362 km |
+-500kV |
3100 MW |
1970 |
transmission voltage until 1984 +-400kV, maximum transmission power until 1982 1440 MW, from 1982 to 1984 1600 MW, from 1984 to 1989 2000 MW, mercury arc rectifiers replaced in 2004 by photothyristors |
Nelson River Bipole 1 |
Gillam, Canada |
Rosser, Manitoba |
- |
895 km |
+-450kV |
1620 MW |
1971 |
Used the largest mercury arc rectifiers ever built. Poles converted to thyristors in 1993, 2004. |
HVDC Kingsnorth |
Kingsnorth, UK |
London-Beddington, UK; London-Willesden, UK |
85 km |
- |
+-266kV |
640 MW |
1975 |
shut down in the 1980s |
Name |
Converter Station 1 |
Converter Station 2 |
Length of Cable |
Length of overhead line |
Voltage |
Transmission power |
Inauguration |
Remarks |
HVDC back-to-back station Eel River |
New Brunswick, Canada |
New Brunswick, Canada |
- |
- |
80 kV |
320 MW |
1972 |
|
Cross-Skagerak 1 + 2 |
Tjele, Denmark |
Kristiansand, Norway |
130 km |
100 km |
+-250kV |
500 MW |
1977 |
|
HVDC Vancouver Island 2 |
Delta, British Columbia |
North Cowichan, British Columbia |
33 km |
42 km |
280 kV |
370 MW |
1977 |
|
Square Butte |
Center, North Dakota |
Arrowhead, Minnesota |
- |
749 km |
+-250kV |
500 MW |
1977 |
|
HVDC back-to-back station Shin Shinano |
Shin Shinano, Japan |
Shin Shinano, Japan |
- |
- |
+-125kV |
600 MW |
1977 |
|
CU |
Coal Creek, North Dakota |
Dickinson, Minnesota |
- |
710 km |
+-400 kV |
1000 MW |
1979 |
|
HVDC Hokkaido-Honshu |
Hakodate, Japan |
Kamikita, Japan |
44 km |
149 km |
250 kV |
300 MW |
1979 |
|
Cahora Bassa (HVDC) |
Songo, Mozambique |
Apollo, South Africa |
- |
1420 km |
+-533kV |
1920 MW |
1979 |
|
Inga-Shaba |
Kolwezi, Zaire |
Inga, Zaire |
- |
1700 km |
+-500kV |
560 MW |
1982 |
|
HVDC back-to-back station Acaray |
Acaray, Paraguay |
Acaray, Paraguay |
- |
- |
25,6 kV |
50 MW |
1981 |
|
HVDC back-to-back station Vyborg |
Vyborg, Russia |
Vyborg, Russia |
- |
- |
+-85 kV |
1065 MW |
1982 |
|
HVDC back-to-back station Dürnrohr |
Dürnrohr, Austria |
Dürnrohr, Austria |
- |
- |
145 kV |
550 MW |
1983 |
shut down in October 1996 |
HVDC Gotland 2 |
Västervik, Sweden |
Yigne, Sweden |
92.9 km |
6.6 km |
150 kV |
130 MW |
1983 |
|
HVDC back-to-back station Artesia, New Mexico |
Artesia, New Mexico |
Artesia, New Mexico |
- |
- |
82 kV |
200 MW |
1983 |
|
HVDC back-to-back station Chateauguay |
Châteauguay — Saint-Constant |
Châteauguay — Saint-Constant |
- |
- |
140 kV |
1000 MW |
1984 |
|
HVDC Itaipu 1 |
Foz do Iguaçu, Paraná |
São Roque, São Paulo |
- |
785 km |
+-600 kV |
3150 MW |
1984 |
|
HVDC Itaipu 2 |
Foz do Iguaçu, Paraná |
São Roque, São Paulo |
- |
805 km |
+-600 kV |
3150 MW |
1984 |
|
HVDC back-to-back station Oklaunion |
Oklaunion |
Oklaunion |
- |
- |
82 kV |
200 MW |
1984 |
|
HVDC back-to-back station Blackwater, New Mexico |
Blackwater, New Mexico |
Blackwater, New Mexico |
- |
- |
57 kV |
200 MW |
1984 |
|
HVDC back-to-back station Highgate, Vermont |
Highgate, Vermont |
Highgate, Vermont |
- |
- |
56 kV |
200 MW |
1985 |
|
HVDC back-to-back station Madawaska, Quebec |
Degelis |
Degelis |
- |
- |
140 kV |
350 MW |
1985 |
|
HVDC back-to-back station Miles City |
Miles City |
Miles City |
- |
- |
+-82 kV |
200 MW |
1985 |
|
Nelson River Bipole 2 |
Sundance, Canada |
Rosser, Canada |
- |
937 km |
+-500 kV |
1800 MW |
1985 |
|
HVDC Cross-Channel (new) |
Les Mandarins, France |
Sellindge, UK |
72 km |
- |
+-270 kV |
2000 MW |
1986 |
2 bipolar systems |
HVDC back-to-back station Broken Hill |
Broken Hill |
Broken Hill |
- |
- |
+-8.33 kV |
40 MW |
1986 |
|
Intermountain |
Intermountain, Utah |
Adelanto, California |
- |
785 km |
+-500 kV |
1920 MW |
1986 |
|
HVDC back-to-back station Uruguaiana |
Uruguaiana, Brazil |
Uruguaiana, Brazil |
- |
- |
+-17.9 kV |
53.9 MW |
1986 |
|
HVDC Gotland 3 |
Västervik, Sweden |
Yigne, Sweden |
98 km |
- |
150 kV |
130 MW |
1987 |
|
HVDC back-to-back station Virginia Smith |
Sidney, Nebraska |
Sidney, Nebraska |
- |
- |
55.5 kV |
200 MW |
1988 |
|
Konti-Skan 2 |
Vester Hassing, Denmark |
Stenkullen, Sweden |
87 km |
60 km |
285 kV |
300 MW |
1988 |
|
HVDC back-to-back station Mc Neill |
Mc Neill, Canada |
Mc Neill, Canada |
- |
- |
42 kV |
150 MW |
1989 |
|
HVDC back-to-back station Vindhyachal |
Vindhyachal, India |
Vindhyachal, India |
- |
- |
176 kV |
500 MW |
1989 |
|
HVDC Sileru-Barsoor |
Sileru, India |
Barsoor, India |
- |
196 km |
+-200 kV |
400 MW |
1989 |
|
Fenno-Skan |
Dannebo, Sweden |
Rauma, Finland |
200 km |
33 km |
400 kV |
500 MW |
1989 |
|
HVDC Gezhouba - Shanghai |
Gezhouba, China |
Nan Qiao, China |
- |
1046 km |
+-500 kV |
1200 MW |
1989 |
|
Quebec - New England Transmission |
Radisson, Quebec |
Nicolet, Quebec; Des Cantons, Quebec; Comerford, New Hampshire; James Bay, Massachusetts |
- |
1100 km |
+-450 kV |
2000 MW |
1991 |
multiterminal scheme |
HVDC Rihand-Delhi |
Rihand, India |
Dadri, India |
- |
814 km |
+-500 kV |
1500 MW |
1992 |
|
SACOI 2 |
Suvereto, Italia |
Lucciana, France; Codrongianos, Italy |
118 km |
304 km |
200 kV |
300 MW |
1992 |
multiterminal scheme |
HVDC Inter-Island 2 |
Benmore Dam, New Zealand |
Haywards, New Zealand |
40 km |
570 km |
350 kV |
640 MW |
1992 |
|
Cross-Skagerak 3 |
Tjele, Denmark |
Kristiansand, Norway |
130 km |
100 km |
350 kV |
500 MW |
1993 |
|
Baltic-Cable |
Lübeck-Herrenwyk, Germany |
Kruseberg, Sweden |
250 km |
12 km |
450 kV |
600 MW |
1993 |
|
HVDC back-to-back station Etzenricht |
Etzenricht, Germany |
Etzenricht, Germany |
- |
- |
160 kV |
600 MW |
1993 |
shut down in October 1995 |
HVDC back-to-back station Vienna-Southeast |
Vienna, Austria |
Vienna, Austria |
- |
- |
142 kV |
600 MW |
1993 |
shut down in October 1996 |
HVDC Haenam-Cheju |
Haenam, South Korea |
Jeju, South Korea |
101 km |
- |
180 kV |
300 MW |
1996 |
|
Kontek |
Bentwisch, Germany |
Bjaeverskov, Denmark |
170 km |
- |
400 kV |
600 MW |
1996 |
|
HVDC back-to-back station Welch-Monticello |
Welch-Monticello, Texas |
Welch-Monticello, Texas |
- |
- |
162 kV |
600 MW |
1998 |
|
HVDC Leyte - Luzon |
Ormoc, Leyte |
Naga, Camarines Sur |
21 km |
430 km |
350 kV |
440 MW |
1998 |
|
HVDC Visby-Nas |
Nas, Sweden |
Visby, Sweden |
70 km |
- |
80 kV |
50 MW |
1999 |
|
SwePol |
Stärnö, Sweden |
Slupsk, Poland |
245 km |
- |
450 kV |
600 MW |
2000 |
|
HVDC Italy-Greece |
Galatina, Italy |
Arachthos, Greece |
200 km |
110 km |
400 kV |
500 MW |
2001 |
|
Kii Channel HVDC system |
Anan, Japan |
Kihoku, Japan |
50 km |
50 km |
+-500 kV |
1400 MW |
2000 |
|
HVDC Moyle |
Auchencrosh, UK |
Ballycronan More, UK |
63.5 km |
- |
250 kV |
250 MW |
2001 |
|
HVDC Thailand-Malaysia |
Khlong Ngae, Thailand |
Gurun, Malaysia |
- |
110 km |
300 kV |
300 MW |
2002 |
|
HVDC back-to-back station Minami-Fukumitsu |
Minami-Fukumitsu, Japan |
Minami-Fukumitsu, Japan |
- |
- |
125 kV |
300 MW |
1999 |
|
HVDC Three Gorges-Changzhou |
Longquan, China |
Zhengping, China |
- |
890 km |
+-500 kV |
3000 MW |
2003 |
|
HVDC Three Gorges-Guangdong |
Jingzhou, China |
Huizhou, China |
- |
940 km |
+-500 kV |
3000 MW |
2003 |
|
Basslink |
Loy Yang, Australia |
George Town, Australia |
298.3 km |
71.8 km |
400 kV |
600 MW |
2005 |
|
Vizag II |
Gazuwaka, India |
Gazuwaka, India |
0 km |
0 km |
176 kV |
500 MW |
2005 |
|
HVDC back-to-back station Sharyland |
Sharyland, Texas, USA |
Sharyland, Texas, USA |
0 km |
0 km |
+-21 kV |
150 MW |
2007 |
|
Imera Power HVDC Wales-Ireland, East West Interconnector |
Leinster, Ireland |
Anglesea, Wales |
130 km |
- |
+-400 kV |
500 MW |
2008 |
|
SAPEI |
Latina, Italy |
Fiume Santo, Sardinia |
435 km |
- |
+-500 kV |
1000 MW |
2008/9 |
|
NorNed |
Feda, Norway |
Eemshaven, Netherlands |
580 km |
- |
+-450 kV |
700 MW |
2008 |
|
HVDC back-to-back station at Visakhapatnam |
Visakhapatnam, India |
Visakhapatnam, India |
- |
- |
|
|
|
|
East South-II |
Talcher, Orissa, India |
Kolar, Karnataka, India |
- |
1450 km |
+-500 kV |
2000MW |
2002 |
|