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