340:. The National Grid expects to construct a 400 kV substation adjacent to the onshore Celtic Array wind farm substation, and to make the connection to the mainland electrical gridon the Wylfa Pentir overhead line. The wind farm at stage 2 was expected to consist of between 146 and 440 (15 MW to 4 MW) wind turbines, with up to 8 HVAC offshore substations plus potentially up to 4 HVDC offshore substations; the use of HVDC was not a preferred option. The wind farm would potentially have had up to 4 offshore accommodation platforms for servicing.
1064:
242:
roughly between the southwestern and southeastern development zones; additional
Liverpool to Dublin shipping skirted close to the southern edge of the zone, as well as crossing the southeastern zone. To reduce collision risk an additional shipping buffer zone was recommended at the southern and southwestern edges of the southeastern development zone (Rhiannon). Considerations of the main shipping routes were a major factor in forming shapes of the development zones.
1050:
1078:
335:
By the stage 2 consultation (March 2014) the wind farm power export cables, landfall and national grid connection had been narrowed from 16 export cables with potential landfall and grid connection sites along the west
English and north Welsh coasts, to 12 export cables making landfall at 4 sites in
241:
Significant shipping routes crossed the wind farm zone at several points, including: Liverpool to
Belfast shipping crosses the zone roughly between the south-eastern and north-eastern development areas; shipping mainly tankers to the Mersey ports via the pilot station at Point Lynas cross the zone
167:
to develop the zone; a "zone appraisal report" published in 2012 split the area into 3 development zones, with large scale gaps between, primarily to prevent disruption to shipping; the three development zones were estimated to have a total capacity of between 2.9 and 5.4 GW. In 2012 a planning
808:
260:
In July 2014 plans for the wind farm were terminated by
Centrica and Dong, due to the foundation requirements being beyond what was currently financially viable. One factor was the differing ground conditions (sand/rock) which would have required different foundation types, increasing costs.
222:
The site was split into three zones: a north-east zone of 359 km (139 sq mi) with 1 to 2 GW estimated capacity; a south-west zone of 255 km (98 sq mi) with 0.5 to 0.8 GW; and a south-eastern zone of 617 km (238 sq mi) with 1.4 to 2.6 GW.
817:
210:
was awarded the license to develop the Irish Sea round 3 zone; the zone had a total area of 2,200 km (850 sq mi) with an estimated potential of 4.2 GW through wind power generation. In March 2012 Centrica and
524:"Consideration of shipping traffic and adverse weather routes emerged as a key issue safe passage of navigation was one of the main reasons driving the shape and location of the Potential Development Areas"
750:
962:
792:
184:
203:
designated several areas of potential development, and began a competitive tender process to allocate the sites to developers. Zone development agreements were made in
December 2009.
984:
858:
253:. In late 2012 the wind farm plan application for the northeast block was delayed based on concerns on its impact on shipping to the Isle of Man (such as that affecting the
684:
382:
329:
The wind farm site had a maximum area of 497 km (192 sq mi) with water depths of 36 to 83 m (118 to 272 ft) with a tidal range of up to 8.5m.
902:
271:
759:
1106:
973:
880:
948:
924:
800:
356:
1121:
1116:
537:
1101:
995:
567:
246:
869:
668:
254:
391:
59:
721:
913:
323:
226:
The sea bed of the wind farm zone consisted of sand/gravel, or glacial material including sand/gravel and boulders in
891:
837:
238:. Bedrock was located at between sea bed level and 100m below sea bed, with deeper levels at the west of the zone.
954:
326:
connection at
Anglesey. The initial scoping report supposed wind turbines with between 5 MW and 15 MW capacity.
935:
1083:
187:
instigated studies to identify offshore wind sites for around 25 GW of generating capacity; the study, the
175:
In July 2014 the developers terminated plans for the wind farm due to unviable turbine foundation costs.
1055:
365:
310:
An initial scoping report was submitted in 2012; the proposed wind farm was on a site ~19 km from
245:
The south-east zone was the first to be taken forward, with a planning scoping report submitted to the
1031:
1021:
1011:
1063:
199:" phase of UK offshore development was announced, subsequently the OESEA plan was adopted, and the
192:
596:
408:
191:(OESEA1, 2009) identified up to 33 GW of potential offshore wind power within English and Welsh
702:
549:
426:
Centrica and DONG Energy establish joint venture to co-develop Round 3 Irish Sea wind farm zone
1111:
685:"Stage 1 consultation for Rhiannon Wind Farm, an offshore wind farm proposal in the Irish Sea"
424:
196:
145:
575:
384:
Round 3 Offshore Wind Site
Selection at National and Project Levels - Non-Technical Summary
332:
Public consultation began in late 2012, the second consultation phase began in March 2014.
1069:
1095:
810:
Rhiannon Wind Farm
Limited - Environmental Impact Assessment Offshore Scoping Report
656:
Rhiannon Wind Farm
Limited - Environmental Impact Assessment Offshore Scoping Report
644:
Rhiannon Wind Farm
Limited - Environmental Impact Assessment Offshore Scoping Report
632:
Rhiannon Wind Farm Limited - Environmental Impact Assessment Offshore Scoping Report
231:
200:
1077:
315:
212:
164:
153:
106:
614:
1045:
287:
273:
74:
61:
227:
219:, the Irish Sea wind farm development subsidiary, at a cost of £40 million.
149:
118:
47:
195:
at sea bed depth of less than 60 m (200 ft); In June 2008 the "
163:
for development in 2012, and in 2012 Centrica formed a joint venture with
130:
722:"Plans for Europe's largest off-shore wind farm due to be unveiled today"
337:
311:
207:
160:
102:
843:
319:
215:
formed a joint venture to develop the wind farm zone, acquiring 50% of
336:
North Anglesey connected by an underground cable to a substation at
473:
Environmental Impact Assessment Offshore Scoping Report (July 2012)
235:
358:
Supporting Information Relating to the Announcement of Round 3
322:, with a capacity of up to 2.2 GW; initial planning assumed a
168:
application for the southeastern zone was submitted, as the
410:
Centrica awarded Round Three offshore wind development zone
778:
5.3 (Box 5.1); 5.14-5.15 (Table 5.1); 5.47-5.50; 5.62-5.63
615:"Irish Sea windfarm proposals lodged with planning agency"
839:
Irish Sea Zone: Zonal Appraisal and Planning (ZAP) Report
185:
Department for Business, Enterprise and Regulatory Reform
752:
Rhiannon Wind Farm Connection - Strategic Options Report
550:"Celtic Array delay Irish Sea wind farm extension plans"
963:"3. Site Selection & Consideration of Alternatives"
597:"Celtic Array Rhiannon wind farm off Anglesey scrapped"
758:, 18 March 2014, 3. pp.10-13; 9. p.50, archived from
738:
3. Site Selection & Consideration of Alternatives
230:(mud/sand); below the sea bed surface strata include
953:, Centrica / DONG Energy, March 2014, archived from
703:"Isle of Man residents consulted on wind farm plans"
390:, The Crown Estate, pp. 1–2, 11, archived from
816:, Centrica / DONG Energy, July 2012, archived from
634:(July 2012) pp.1, 3, 5; fig.1.1, p.7; fig.3.3, p.17
117:
112:
98:
90:
53:
43:
29:
20:
1033:Celtic Array North East Potential Development Area
1023:Celtic Array South West Potential Development Area
189:Offshore Energy Strategic Environmental Assessment
535:5. Identification of Potential Development Areas
992:Stage 2 Preliminary Environmental Information
970:Stage 2 Preliminary Environmental Information
950:Stage 2 Preliminary Environmental Information
793:"Rhiannon Wind Farm (Round 3 Irish Sea Zone)"
8:
469:Rhiannon Wind Farm (Round 3 Irish Sea Zone)
217:Centrica Energy Renewable Investments Ltd.
17:
859:"6. ZAP Engineering Studies and Envelope"
673:, North Wales Daily Post, 29 October 2012
413:(Press release), Centrica, 8 January 2010
429:(Press release), Centrica, 21 March 2012
172:, with an estimated capacity of 2.2 GW.
464:
462:
460:
452:6. ZAP Engineering studies and envelope
348:
670:Rhiannon Wind Farm consultation starts
471:(Infrastructure Planning Commission).
7:
1107:Offshore wind farms in the Irish Sea
797:infrastructure.planningportal.gov.uk
568:"Centrica, Dong ditch R3 Irish Sea"
658:(July 2012) 4.4, p.18; 4.14, p.21;
364:, The Crown Estate, archived from
247:Infrastructure Planning Commission
159:The wind farm zone was awarded to
14:
1076:
1062:
1048:
925:"21. Conclusions and Next Steps"
842:, Centrica, 2012, archived from
720:Devine, Darren (31 March 2014),
255:Isle of Man Steam Packet Company
655:
643:
631:
472:
1122:Wind farms in Northern Ireland
574:, 31 July 2014, archived from
507:
498:14.4.4-14.4.7 Figs.14.9-14.29
495:
440:21. Conclusions and Next Steps
439:
1:
994:, vol. 1, archived from
972:, vol. 1, archived from
903:"14. Shipping and Navigation"
146:UK round 3 offshore wind farm
775:
534:
519:
483:
451:
1117:Ørsted (company) wind farms
1102:Round 3 offshore wind farms
737:
508:14. Shipping and Navigation
496:14. Shipping and Navigation
299:Rhiannon offshore wind farm
1138:
538:5.3.3-5.4.3; Figs.5.8-5.12
486:7.4.1-7.4.2; Figs.7.1, 7.2
468:
881:"7. Geology and Sediment"
689:www.nwcoastalforum.org.uk
127:
25:
985:"5. Project Description"
932:Rhiannon ZAP report 2012
910:Rhiannon ZAP report 2012
888:Rhiannon ZAP report 2012
866:Rhiannon ZAP report 2012
1084:Renewable energy portal
484:7. Geology and Sediment
314:, ~34 km from the
179:History and development
776:5. Project Description
1056:United Kingdom portal
726:www.walesonline.co.uk
646:(July 2012) 4.9, p.20
318:and ~60 km from
707:BBC News Isle of Man
183:In late 2007 the UK
510:14.15.1 Figs.14.52
283: /
71: /
1013:Rhiannon Wind Farm
941:on 20 January 2013
897:on 20 January 2013
875:on 20 January 2013
556:, 19 December 2012
265:Rhiannon wind farm
251:Rhiannon Wind Farm
193:territorial waters
170:Rhiannon Wind Farm
152:south east of the
765:on 3 January 2015
691:, 6 November 2012
520:Executive Summary
138:
137:
1129:
1086:
1081:
1080:
1072:
1067:
1066:
1058:
1053:
1052:
1051:
1037:
1027:
1017:
1002:
1001:on 29 April 2014
1000:
989:
980:
979:on 29 April 2014
978:
967:
958:
957:on 29 April 2014
942:
940:
934:, archived from
929:
920:
919:on 29 April 2014
918:
912:, archived from
907:
898:
896:
890:, archived from
885:
876:
874:
868:, archived from
863:
854:
853:
851:
846:on 29 April 2014
831:
830:
828:
823:on 29 April 2014
822:
815:
804:
803:on 29 April 2014
799:, archived from
779:
773:
767:
766:
764:
757:
747:
741:
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729:
728:
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629:
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611:
605:
604:
593:
587:
586:
585:
583:
578:on 3 August 2014
564:
558:
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540:
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522:p.vii, Figs.6,7
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397:on 29 April 2014
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371:on 29 April 2014
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289:
288:53.675°N 4.238°W
284:
281:
280:
279:
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206:In January 2010
131:edit on Wikidata
86:
85:
83:
82:
81:
76:
75:53.771°N 4.411°W
72:
69:
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67:
64:
18:
1137:
1136:
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1130:
1128:
1127:
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1042:
1030:
1020:
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998:
987:
983:
976:
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961:
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923:
916:
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894:
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719:
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709:, 26 March 2014
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298:
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277:
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272:
270:
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267:
249:in 2012 as the
181:
144:was a proposed
134:
113:Wind farm
79:
77:
73:
70:
65:
62:
60:
58:
57:
39:
12:
11:
5:
1135:
1133:
1125:
1124:
1119:
1114:
1109:
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1073:
1070:Weather portal
1059:
1044:
1043:
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1040:
1039:
1038:
1028:
1018:
1005:
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1003:
981:
945:
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943:
921:
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877:
834:
833:
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788:
786:
783:
781:
780:
768:
742:
730:
712:
694:
676:
660:
648:
636:
624:
621:, 14 July 2012
619:BBC News Wales
606:
603:, 31 July 2014
588:
559:
541:
527:
512:
500:
488:
476:
456:
454:6.3; Table 6.1
444:
432:
416:
400:
374:
347:
345:
342:
293:53.675; -4.238
266:
263:
180:
177:
136:
135:
128:
125:
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121:
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109:
100:
96:
95:
92:
88:
87:
80:53.771; -4.411
55:
51:
50:
45:
41:
40:
38:
37:
36:United Kingdom
33:
31:
27:
26:
23:
22:
13:
10:
9:
6:
4:
3:
2:
1134:
1123:
1120:
1118:
1115:
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1103:
1100:
1099:
1097:
1085:
1079:
1074:
1071:
1065:
1060:
1057:
1046:
1036:, 4C Offshore
1035:
1034:
1029:
1026:, 4C Offshore
1025:
1024:
1019:
1016:, 4C Offshore
1015:
1014:
1009:
1008:
1006:
997:
993:
986:
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975:
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964:
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841:
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835:
819:
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772:
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727:
723:
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664:
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637:
633:
628:
625:
620:
616:
610:
607:
602:
601:www.bbc.co.uk
598:
592:
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569:
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324:National grid
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317:
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305:
264:
262:
258:
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232:boulder clays
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24:
19:
16:
1032:
1022:
1012:
1007:4C Offshore
996:the original
991:
974:the original
969:
955:the original
949:
936:the original
931:
914:the original
909:
892:the original
887:
870:the original
865:
848:, retrieved
844:the original
838:
825:, retrieved
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809:
801:the original
796:
771:
760:the original
751:
745:
733:
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715:
706:
697:
688:
679:
669:
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618:
609:
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591:
580:, retrieved
576:the original
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503:
491:
479:
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201:Crown Estate
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158:
142:Celtic Array
141:
139:
21:Celtic Array
15:
316:Isle of Man
291: /
213:DONG Energy
165:DONG Energy
154:Isle of Man
107:DONG Energy
78: /
54:Coordinates
1096:Categories
572:renews.biz
344:References
297: (
275:53°40′30″N
63:53°46′16″N
740:3.42-3.63
278:4°14′17″W
228:Diamicton
150:Irish Sea
94:Cancelled
66:4°24′40″W
48:Irish Sea
1112:Centrica
850:28 April
827:28 April
554:BBC News
338:Rhosgoch
312:Anglesey
208:Centrica
161:Centrica
123:Offshore
103:Centrica
99:Owner(s)
44:Location
785:Sources
582:31 July
320:Cumbria
197:Round 3
148:in the
30:Country
91:Status
999:(PDF)
988:(PDF)
977:(PDF)
966:(PDF)
939:(PDF)
928:(PDF)
917:(PDF)
906:(PDF)
895:(PDF)
884:(PDF)
873:(PDF)
862:(PDF)
821:(PDF)
814:(PDF)
763:(PDF)
756:(PDF)
395:(PDF)
388:(PDF)
369:(PDF)
362:(PDF)
236:tills
129:[
852:2014
829:2014
584:2014
442:21.2
234:and
140:The
119:Type
257:).
1098::
990:,
968:,
930:,
908:,
886:,
864:,
795:,
724:,
705:,
687:,
617:,
599:,
570:,
552:,
459:^
156:.
105:,
301:)
133:]
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