Tidal Lagoon Swansea Bay – Project Delivery Update By Ioan Jenkins, Development Director

Low carbon electricity: 8% of UK electricity, secured within a decade

Energy security: Reliable, home-grown and near continuous power supply from proven technology, lasting 120 years

Affordable energy: Lowest generation cost of all electricity for 85 years following investment period. Lower support cost than most low carbon electricity; larger lagoons generate cheaper power

A national fleet of 6 tidal lagoons to deliver …

A new UK industry

UK investment and growth: £40bn+ investment programme

50%+ Welsh content

65%+ UK content

UK jobs: Long-term, diversely skilled, industrial employment

Social and economic regeneration: Iconic energy infrastructure at the heart of the community

An industry based in the Swansea Bay City Region

is created to deliver…

IT ALL STARTS IN SWANSEA BAY

5

Swansea Bay Tidal Lagoon - Overview

Wall length: 9.5km Area: 11.5km2 Rated capacity: 300MW Installed capacity: 320MW Daily generating time: 14 hours Annual output (net): c.500GWh Annual CO2 savings: 236,000 t Design life: 120yrs Height of wall: 5-20m Wall above low water: 12m Wall above high water: 3.5m Tidal range Neaps: 4.1m Tidal range Springs: 8.5m 155,000 homes powered: c.90% of Swansea Bay’s domestic use/

c.11% of Wales’ domestic use 24

TLSB – Where are we now?

Planning Development Consent Order - Achieved Marine licence – ambition for decision during Summer 2016

Construction preparation Awarding preferred bidder on the main contract packages (Tier 1

contractors):

1. Power generation (Turbine supply ) - GE & Andritz Hydro 2. Power generation - Operation & Maintenance - GE & Andritz

Hydro 3. Turbine /sluice structure – Laing O’Rourke 4. Marine works - CHEC 5. Ancillary civils – Alun Griffiths Ltd. 6. Buildings

Construction Programme

Construction sequence – Phase 1

Activities: Site establishment,

fencing roads, lighting, security etc.

Site office set up Car parks

established HGV yards set up

Construction sequence – Phase 2

Activities: Batching plant

operational Contractor yard set

up Western break

water constructed Temporary bund

constructed and dewatered

Services installed on western breakwater

Construction sequence – Phase 3

Activities: 257kV Supply cable

installed Turbine house

construction completed

Eastern breakwater construction commences

Extend DCWW outfall by 1500m

Neath channel re-alignment

Construction sequence – Phase 4

Activities: Eastern breakwater

completed Temporary bund

removed

Construction sequence – Phase 5

Activities: Wet commissioning

of turbine structure Landscaping of

breakwater Power generation

commences

Construction Methodology

Water is impounded by a wall or “breakwater” to create a lagoon Breakwater comprises bunds of quarry run with sand fill in

between Armour rock is placed on top

Breakwater design – quarry run option

Marine wall construction phases

Turbine and Sluice-gate housing structure.

Temporary Structure & Turbine Housing/Sluice Gates (South Korea)

• This coffer dam (temporary bund) uses steel sheet piles to form a cellular coffer dam

• The Swansea Bay tidal lagoon temporary bund will be constructed using the same methodology as the sea wall.

Turbine house configuration

Sihwa 3 blade 7.5m runner a close comparison to the 7.2m TLSB turbine runner

Turbine and gate housing

Siwha tidal power station (South Korea)

UK Content

A UK supply chain

Realising a 50% Welsh, 65% UK content aim

Over 1,000 companies have registered an interest in supplying services to TLSB/TLP

Sustaining and creating jobs

The industrial opportunity: turbines

Draft Tube 40 tonnes

Turbine Housing 90 tonnes

Bulb Nose 20 tonnes

Hatch Cover 30 tonnes

Shaft 40 tonnes

Runner

Runner blade 18 tonne Runner hub

45 tonnes

Distributor 90 tonnes Discharge ring

Generator

CACW heat exchangers

Stator end plate

Stator frame

Stator copper

Stator laminations Rotor laminations

Rotor bars

Terminal box

Rotor spider Rotor end

rings Rotor pressure plates Stator

compression plates

The industrial opportunity: generators

Converter

Economic Impact

Employment and economic stimulus in Swansea Bay

Construction: 1850 full time equivalent jobs (5,540 new job years) directly created during three-year construction

Operations & maintenance: est. 60 long-term, permanent jobs running the lagoon

Leisure: est. up to 90 additional leisure industry jobs

Gross Value Added: £173m during construction, £264m lifetime operations, £252m lifetime leisure impacts

Independent data from Cardiff Business School. Turning the Tide: the economic significance of the Tidal Lagoon Swansea Bay, Pro M Munday, Pro C Jones, Welsh Economy Research Unit, Cardiff University

‘The Economic Case for a UK Tidal Lagoon Industry’, Centre for Economics and Business Research, July 2014 Key findings:

• A national fleet of 6 lagoons would contribute £27bn to UK GDP during 12 years of construction

Creating or sustaining 35,800 jobs on average and 70,900 jobs at its

peak In operation, the fleet would contribute £3.1bn per annum to UK GDP Creating or sustaining as many as 6,400 jobs Potential to increase net exports by £3.7bn per year – equivalent to

13% of the current trade deficit

Future lagoons

Low carbon electricity: 8% of UK electricity, secured within a decade

Energy security: Reliable, home-grown and near continuous power supply from proven technology, lasting 120 years

Affordable energy: Lowest generation cost of all electricity for 85 years following investment period. Lower support cost than most low carbon electricity; larger lagoons generate cheaper power

A national fleet of 6 tidal lagoons to deliver …

Indicative design: Breakwater: 22km Area: 70km2 Turbines: 60-90 Average tidal range: 9.21m Installed capacity: 1,800MW-2,800MW Annual output: 4TWh-6Twh p/a Design life: 120 years Generating power: 14 hours each day

Comfortably enough low carbon electricity to power every homes in Wales *

*Average annual electricity consumption per Welsh household = 3,928 kWh. 1.319m Welsh households. Figures are based on DECC 2005 – 2013 electricity consumption statistics and average of 5TWh p/a.

NOTE: Figures are based on a single indicative design iteration and are not necessary representative of any scheme that may be developed

Tidal Lagoon Cardiff

Scaling up in a single step

and global potential

Q & A