The Project

The project description for North Falls will be developed as work progresses, taking into account inputs from the scoping opinion, preliminary environmental information report (PEIR) and ongoing engineering and survey work and feedback from our consultations.

At this stage we can give a high level summary of its key components; offshore array, proposed offshore cable route and landfall, and an onshore area of search. As the onshore grid connection - where the project will connect into the national grid - is still to be determined by National Grid, we do not yet know the location of the project's onshore infrastructure. This means the route of the onshore cables and site of the onshore substation are not yet known, although North Essex is the most likely location.

Key Components

North Falls will comprise a number of wind turbines on foundations, with array cables connecting them to up to two offshore substations. Marine export cables will bring the power to shore, while onshore cables will carry the power to an onshore substation. From here the power will be transmitted to the national grid.

To view what the wind farm could look like we have prepared this 3D interactive model with viewpoints from onshore locations. The model features the potentially smallest and largest turbines in our scoping report, so you can compare the difference in potential visual impact by switching between the screens. Please read the instructions to ensure you get the most out of the model.

Turbines

As turbine technology is likely to evolve between now and the possible start of construction for North Falls, we are looking at a range in terms of size and number installed. The project has the potential for up to 71 turbines, each comprising tapered tubular towers and three blades attached to a nacelle housing mechanical and electrical generating equipment.

Up to 71

Number of wind turbine generators

150km2

Array areas coverage

337m

Maximum rotor diameter

397m

Maximum rotor tip height

22.5km

Distance to shore (closest)

Foundations

Each turbine and the offshore substation(s) will sit on top of a foundation. The type and design of foundations will be informed by site investigations and a procurement process, after the project has been consented. They may be: monopiles; jackets on pin piles or on suction caissons, or gravity base structures.

Offshore Electrical Infrastructure

This will comprise the array cables between the turbines, offshore substation(s) and the export cable bringing the power to shore.

The maximum length of array cabling for North Falls is estimated to be 228km with the design across both the north and south sections. The overall turbine and array layout will be finalised post-consent. Likewise the location and design of the offshore substations will also be finalised during the design phase of the project.

55km

Provisional offshore cable route length

Up to 4

Maximum number of offshore export circuits

0.5 - 3m

Target minimum cable burial depth where buried

2

Maximum number of offshore substation platforms

228km

Maximum estimated length of array cables

Onshore Electrical Infrastructure

The onshore elements of North Falls will comprise buried cables carrying the power from the landfall point to a new onshore substation, which then transforms the electricity so it can enter the national grid via another substation to be constructed by National Grid. From here it will be delivered to the end users: homes, businesses and industry.

Horizontal directional drilling

Proposed landfall installation method

High voltage alternating current

Electrical connection type

1

Number of onshore substations

Up to 70m

Maximum onshore cable route width during construction

200m x 250m

Maximum onshore substation footprint

18m

Maximum onshore substation height

Review feedback