Bristol Channel Energy

A Balanced Technology Approach

Severn Estuary Partnership 17 October

Johnny Gowdy

South West Marine Energy Park

A physical and geographic zone with priority focus for marine energy technology development, energy generation projects and industry growth

3

Beyond 2020UK needs large scale renewable energy projects

Image courtesy of Parsons Brinckerhoff

Severn Tidal Power Study 2010

Cardiff to Weston Barrage

Bridgwater Bay Lagoon

Shoots Barrage

8,640MW 3,600MW 1,050MW

14.4 to 16.7TWh/a

5.6 to 6.9 TWh/a

2.6 to 2.8 TWh/a

Ebb only Ebb & Flood Ebb only

£211 £248 £228

Levelised Cost Of Energy Cost (£/MWh @10%)

Recent Barrage Proposals

Challenges

• New Turbine Technology

• Timelines

• Planning and legal risk

• Capital cost and finance

• Environmental Impact – habitat loss &

fish migration

• Impact on upstream ports and economy

• “transformational level of information ”

• Credibility and loss of goodwill

ECC Select Committee Report - June 2013Government response – September 2013

Balanced Technology Approach

Energy, Economy & Environment

A holistic energy system

Mixed technologies

Impacts and interdependencies

Incremental approach

New and proven technology

Invest - stimulating Welsh and South West economies

Export - global energy market

Energy, Economy and jobs

Environment and society

Series of Lagoons

Tidal StreamRelatively shallow 20 - 35 m with velocities in the order of 2.0 – 2.5 m/s

Map layers courtesy of Junqiang Xia, Roger A. Falconer, Binliang Lin,UKApplied Energy, Volume 87, Issue 7, July 2010, Pages 2374–2391 and ABPmer Marine Energy Atlas

New Concepts – Tidal Fences

New tidal technologies

Plus Wind and Wave Power

Energy Potential

5-14 GW

Technology

2-5 GW

2-4 GW

0.5 – 1.5 GW

3 + GW

And floating wind

• Marine & sub-sea operations

• Marine engineering and fabrication

• Design engineering

• Advanced manufacturing

• Aerospace and composites

• Electrical, hydraulics and power

systems

• Environmental sciences

• Consultancy and support services

Economic Opportunity for Wales and SW

Key Challenges

Confusion and mistrust – stakeholders and investors

Lack of understanding regarding costs and technology

Political focus on grand schemes

Tidal range does not have a priority

Economic valuation and financial models

Costs are still too high to support large scale projects

New strategy for Sustainable Severn

England & Wales

£ $ € ¥

Investors

• Governance structure

• Holistic marine spatial plan

• Long term energy strategy

• Technology development

• Industrial strategy

• Co-investment model

• Economic and technical evaluation

Thank You

Johnny Gowdyjgowdy@regensw.co.uk