# The Hornsea Three Offshore Wind Farm Order 2020, Paragraph 3

Extent: E+W

Such activities are authorised in relation to the construction, maintenance and operation of—
Work No.2—
(a) up to 12 offshore type 1 substations each fixed to the seabed by either monopile foundation, mono suction bucket foundation, jacket foundation, gravity base foundation or box-type gravity base foundations and which may be connected to each other or one of the offshore accommodation platforms within Work No.1(b) by an unsupported bridge;
(b) up to four offshore type 2 substations each fixed to the seabed by either monopile foundations, mono suction bucket foundations, jacket foundations, gravity base foundations, jacket foundations, box-type gravity base foundations, pontoon gravity base 1 foundations, or pontoon gravity base 2 foundations and which may be connected to each other or one of the offshore accommodation platforms within Work No.1(b) by an unsupported bridge;
(c) a network of cables;
(d) up to six cable circuits between Work No. 2 and Work No. 3, and between Work No. 3 and Work No.5 consisting of offshore export cables along routes within the Order limits seaward of MHWS including one or more cable crossings; and
(e) up to eight temporary horizontal directional drilling exit pits.
Work No.3—
(a) in the event that the mode of transmission is HVAC, up to four HVAC booster stations fixed to the seabed within the area shown on the works plan by either monopile foundation, mono suction bucket foundation, jacket foundation, gravity base foundation, or box-type gravity base foundations;
(b) in the event that the mode of transmission is HVAC, up to six offshore subsea HVAC booster stations fixed to the seabed by either monopile foundation, mono suction bucket foundation, jacket foundation, gravity base foundation, or box-type gravity base foundations;
(c) in the event that the mode of transmission is HVAC, a network of cables between HVAC booster stations or offshore subsea HVAC booster stations; and
(d) up to six cable circuits between Work No. 2 and Work No. 3, and between Work No. 3 and Work No.5 consisting of offshore export cables along routes within the Order limits seaward of MHWS including one or more cable crossings.
Work No. 4— a temporary work area associated with Work No.2 and Work No.3 for vessels to carry out intrusive activities alongside Work No.2 or Work No.3.
Work No. 5— landfall connection works comprising up to six cable circuits and ducts and onshore construction works within the Order limits seaward of MHWS and landward of MLWS.
In connection with such Works Nos. 2, 3, 4 and 5 and to the extent that they do not otherwise form part of any such work, further associated development within the meaning of section 115(2) of the 2008 Act comprising such other works as may be necessary or expedient for the purposes of or in connection with the relevant part of the authorised scheme and which fall within the scope of the work assessed by the environmental statement and the provisions of this license, including—
(a) scour protection around the foundations of the offshore electrical installations;
(b) cable protection measures such as the placement of rock and/or concrete mattresses, with or without frond devices;
(c) the removal of material from the seabed required for the construction of Work Nos. 2, 3, 4 and 5 and the disposal of up to 2,218,816 cubic metres of inert material of natural origin within Order limits produced during construction drilling and seabed preparation for foundation works and cable sandwave preparation works; and
(d) temporary landing places, moorings or other means of accommodating vessels in the construction and/or maintenance of the authorised development.

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Source: https://www.legislation.gov.uk/uksi/2020/1656/schedule/12/part/1/paragraph/3 (the official version)
Page: https://openlegislation.uk/hornsea-three-offshore-wind-farm-order-2020/schedule-12/part-1/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.