2.3.2 Two Phased 19.
The key elements of the Two Phased approach are as follows:
Two phases of construction, of up to 600MW each (essentially two smaller projects);
The start of Phase 1 would be separated from the start of Phase 2 by no more than 18 months (from commencement of Phase 1 onshore works to the commencement of Phase 2 onshore works);
It is expected the construction period would commence at some point between 2020 and 2025;
The total construction period for Phase 1 and Phase 2 would span approximately 45 months,
o Offshore construction including offshore cable laying for approximately 45 months;
o Onshore construction for two periods of approximately 13 months each (55 weeks for the substation and 29 weeks for cable installation).
20.
The Single Phase and Two Phased approaches to construction have implications in terms of the infrastructure used (see Table 2.2). For example, the maximum number of offshore electrical platforms and maximum number of pits excavated to house jointing bays would vary between the two approaches.
2.4 Other Project Description Updates 21.
2.4.1 Red Line Boundary and Access
2.4.1.1 Offshore 22.
In order to keep the footprint of the projects to the minimum required, EATL has refined the maximum Offshore Cable Corridor extent. The East Anglia THREE Offshore Cable Corridor would still follow a similar Offshore Cable Corridor to that proposed within the East Anglia ONE DCO, but the area required for East Anglia THREE has been reduced fromaround 838km2 to around 454km2 with an Interconnector Cable Corridor providing a link to the East Anglia ONE project, with an area of 238km2 (shown on Figure 2.1). As the footprint of the cables and their
The key updates to the project description are outlined below and the key parameters are highlighted in Table 2.2.
Phase III Report June 2015
East Anglia THREE Offshore Windfarm Page 7
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