5

Attractive

markets

Playing to

our strengths

Providing offshore wind to >1M homes

Offshore wind projects currently in progress delivering >1100 MW,

and potential for 5m homes

Sheringham

Shoal

Hywind

demo

2009- 2012- 2017 2017 2020-

DudgeonDogger

Bank

Hywind

Scotland

Hywind

large scale

North West

Europe

In operation In operation In operation In operation Consented

2.3 MW 317 MW 402 MW 30 MW 3 x 1.2 GW

* All capacity figures on 100% basis

2019

Arkona

385 MW

In development

2024-?

New York

United States

East Coast

In development

>1 GW

Japan

US West Coast

Current

leases

7

8

Empire WindSite Key Data

Area 79,350 acres (321 km2)

Water Depth 65 – 130 ft

Distance to shore 14 – 45 miles

Mean Wind (90 masl) 9 – 9.25 m/s*

Hs (Mean / Max) 1.1 m / 8.9m

Total Potential At least 1.5 GW**

* NREL Wind Prospector

** Subject to suitable subsurface conditions

Indicative development scenarios:

• Capacity Phased pending offtake

• Wind turbine size: 12+ MW

• First power: around 2024

• Operational lifetime: 25 years

• Number of interconnection points: 1 – 3 (subject to grid and offtake)

Overall Project Plan

SAP Permitting –12 month lookahead

Survey PlansSurvey

MeetingsSurveys

Site Assessment

Plan

Plan Approval

November

2017

January

2018

March

2018

June

2018

Mooring design

& integrity

Geophys

survey design

Archaeology &

cultural heritage

Benthic

sampling

Fisheries

liaison &

comms plan

October

2018

• Metocean buoys

• Floating LiDAR (FLiDAR) Buoys x 2

Design Envelopes & Phases

Phase 1

Phase 2

Phase 3

Birds & Bats

• NYSERDA 3 year

baseline assessment

using quarterly aerial

survey imagery across

Master Planning Area.

• Detailed quarterly

aerial survey was

conducted across

Lease Area for a

spring, summer, fall

and winter cycle.

• Other local and

regional surveys,

studies and data

• Same contractor as NYSERDA –

following identical methodology

• Survey plan has been presented to

BOEM, USFW, and NYSDEC for

technical review and comment.

• A minimum of 20% of the Lease Area

will be imaged, 10% total analysed

• 12 x monthly surveys, started

November 2017

• 1.5cm pixel resolution at sea surface

• Data publicly available online

Empire Wind Bird Surveys

Note: Images pre QC

Benthic Habitat Characterization

• New York Bight is predominantly

characterized as sand w/ isolated

patches of gravel-sand. Potential

patches of hard ground in the Lease.

• Reconnaissance assessment across

the lease area and detailed sampling

along cable routes will be conducted

in 2018.

− Grab samples and seabed

imagery

• Detailed assessment across the lease

area will be conducted in 2019 or as

appropriate.

Marine Navigation Tanker Traffic - 2013

• An assessment of visual navigation and collision avoidance;

• Impacts on communications systems, radar, and positioning systems;

• Waterway characteristics such as weather, tides, currents, and ice;

• Vessel traffic survey of 12 months of traffic;

• Risk of collision, allision, and grounding;

• Impacts on radar, both marine band and Doppler;

• Safe clearance of wind turbine rotors for identified vessel types;

• Assessment of safe navigation within the wind farm;

• Impact on USCG missions;

• Analysis of environmental response incidents in the Project Area;

• Analysis of dredging activities in the area that may be affected; and

• Risk mitigation strategies.

Tug & Barge Traffic - 2013

Marine Cultural Resources Characterization• Two categories of

resources:

− Pre-Contact (e.g.

submerged paleo-

landscapes with

preservation potential

of artifacts)

− Post-Contact (e.g.

shipwrecks)

• Assessment activity

requires detailed

mapping of the seafloor

and submarine geology

Map of the New York Bight showing approximate

location of coastline roughly 20,000 years ago

(Merwin 2010).

HRG Survey Equipment • Multibeam depth sounder

• Side scan sonar

• Magnetometer

• Shallow / Medium penetration sub-

bottom profilers

• Day grab sediment sampler

• Underwater digital video camera

Marine Mammal Mitigation Plan

• IHA submitted to NMFS for proposed survey

activity on November 10, 2017

• Proposing 24-hour survey operations

− Alternative Monitoring Plan:

• Passive Acoustic Monitoring

• Night Vision

• Infrared

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