The Morlais Demonstration Zone Order 2021

PART 1Authorised Works

Work No. 1

An offshore tidal generating station with a gross electrical output capacity of up to 240 megawatts within the array area comprising;

(1) up to 620 tidal devices at any one time comprising

(a)seabed mounted sub-surface tidal devices and being fixed to the seabed by:

(i)gravity base; or

(ii)monopile type foundations; or

(iii)multi-pile type foundations;

(b)mid-water column tidal devices and being secured to the seabed by either:

(i)gravity base;

(ii)monopile type foundation;

(iii)multi-pile type foundation; or

(iv)anchors to a gravity base, monopile type foundation or multi-pile type foundation;

(c)floating or surface emergent tidal devices and being secured to the seabed by either:

(i)gravity base;

(ii)monopile type foundation;

(iii)multi-pile type foundation; or

(iv)anchors to a gravity base, monopile type foundation or multi-pile type foundation;

(2) a network of cables for the transmission of electricity and electronic communications laid on or beneath the seabed including cable crossings between—

(a)any of the tidal devices comprising Work No. 1(1);

(b)any of the tidal devices comprising Work No. 1(1) and operational hubs comprising Work No. 1(3) and any of the works comprising Work No. 2; or

(c)any hub comprising Work No. 1(3) to a cable comprising Work No. 2;

(3) up to 120 offshore operational hubs comprising;

(a)up to 120 seabed mounted, fully submerged, hubs being fixed to the seabed by gravity base, monopile or multi-pile type foundation; or

(b)up to 93 floating surface emergent hubs being anchored to the seabed by gravity base, monopile type foundation or multi-pile type foundation; or

(c)up to 8 seabed mounted surface emergent offshore operational hubs being fixed to the seabed by gravity base, monopile type foundation or multi-pile type foundation;

(4) up to 60 navigational and marker buoys;

(5) up to 40 acoustic doppler current profilers;

(6) up to 8 seabed mounted environmental monitoring units;

(7) up to 5 sea level environmental monitoring buoys; and

(8) cable crossings and connectors to connect Work No. 1(2) with Work No. 2.

Work No. 2

Up to 9 export cables each comprising cables for the transmission of electricity and communication laid within the export cable corridor on or beneath the seabed between Work No. 1 and Work No. 3 including cable protection, cable crossings and connectors.

Work No. 3

Up to 9 export cables each comprising cables for the transmission of electricity and communication within the intertidal area either laid underground, over the surface of foreshore or within up to 9 open cut trenches with cable protection and connecting Work No. 2 and Work No. 4.

Work No. 4

Up to 9 export cables each comprising cable for the transmission of electricity and communication laid either underground, over the surface of foreshore cliff face and cliff top or within up to 9 open cut trenches with cable protection between Work No. 3 and the transition joint bays forming Work No. 5.

Work No. 5

Works comprising up to 9 transition joint bays connecting Work No. 4 with Work No. 6.

Work No. 6

Up to 9 export cables each comprising one or more conducting media for the transmission of electricity and communication laid underground connecting Work No. 5 to the electrical substation referred to in Chapter 2 of Part 2 of this Schedule 1.

Work No. 7

Up to 6 export cables for the transmission of electricity and up to 2 communication cables laid underground and transition joint bays and connecting the electrical substation to the switchgear infrastructure each referred to in Chapter 2 of Part 2 of this Schedule 1.

Work No. 8

Up to 6 export cables for the transmission of electricity each comprising one or more conducting media and up to 2 communication cables laid underground including transition joint bays from the switchgear infrastructure referred to in Chapter 2 of Part 2 of this Schedule 1 to Work No. 9.

Work No. 9

Up to 6 export cables for the transmission of electricity each comprising one or more conducting media and up to 2 communication cables installed by way of horizontal directional drills under both the A55 and the North Wales Coast Line railway line connecting Work No. 8 to the grid connection works referred to in Chapter 2 of Part 2 of this Schedule 1.