{"id":1608,"date":"2017-02-14T11:16:59","date_gmt":"2017-02-14T11:16:59","guid":{"rendered":"http:\/\/blogs.sussex.ac.uk\/sussexenergygroup\/?p=1608"},"modified":"2017-02-14T11:23:42","modified_gmt":"2017-02-14T11:23:42","slug":"tidal-lagoon-energy-wales","status":"publish","type":"post","link":"https:\/\/blogs.sussex.ac.uk\/sussexenergygroup\/2017\/02\/14\/tidal-lagoon-energy-wales\/","title":{"rendered":"Tidal lagoon energy in Wales"},"content":{"rendered":"

The report of an independent review of UK tidal lagoon energy was published on 12 January 2017 by a former UK energy Minister Charles Hendry. The report praises the proposed \u2018pathfinder\u2019 tidal lagoon in Swansea Bay as a \u2018no-regrets option\u2019, and sets out a supportive case for developing the sector.<\/strong><\/p>\n

The Hendry Review<\/a> was commissioned in February 2016 by UK Government<\/a> to assess the strategic case for tidal lagoon energy as a new industry in the UK. This followed a successful planning proposal by Tidal Lagoon Power (TLP) to develop the world\u2019s first tidal lagoon in Swansea Bay, as well as a subsequent programme for a \u2018fleet\u2019 of five larger projects, including three in Welsh waters (Cardiff, Newport and Colwyn Bay).<\/p>\n

Despite the Swansea Bay project appearing in the 2015 UK Conservative Party manifesto and receiving development consent<\/a> in June 2015, uncertainties around cost and subsidy subsequently prompted the UK Government to commission an independent review. Its aim was to examine the ability of tidal lagoon energy to cost-effectively contribute to the UK\u2019s energy mix, and the level of subsidy required to do so.<\/p>\n

Tidal lagoons generate electricity<\/a> by enclosing an area of sea adjacent to coastline with a sea wall, and capturing the energy from the rise and fall of tides using turbines. A number of lagoon projects in Wales have been proposed due to the significant tidal range along the Welsh coastline \u2013 particularly in the Severn Estuary, which has the second largest range in the world.<\/p>\n

The case for tidal lagoon energy in Wales<\/strong><\/p>\n

\"tidal<\/a><\/p>\n

The Hendry report (PDF, 2.72MB)<\/a> highlighted the predictability of electricity output and extremely low carbon emissions (less than 20 grams of CO2<\/sub> equivalent per kWh \u2013 on par with onshore wind and nuclear) as major advantages of tidal lagoons. Moreover, a lagoon\u2019s estimated operating lifetime of 120 years or more is unparalleled by any energy technology. In combination, the Review found that they could make a strong contribution to UK energy security and decarbonisation targets. TLP estimate<\/a> that their fleet of lagoons could supply 8% of future UK electricity demand.<\/p>\n

According to the report, the potential benefits to Welsh economy are significant, and there have been many expressions of support from Assembly Members on a cross-party basis. The Review found that the Swansea Bay project would bring \u2018very real and substantial economic and recreational benefits\u2019 to the area (p.37) \u2013 drawing upwards of an estimated 70,000 tourists per year (p.51) \u2013 as well as wider economic benefits across the country.<\/p>\n

Supply chain development and employment opportunities are thought to be considerable; TLP told the Review<\/a> that over 1000 UK businesses have registered an interest in supplying parts and skills to the Swansea Bay project, and the company is aiming to source 50% of the materials and components from Wales. Many companies \u2013 including from within the steel sector \u2013 described the potential TLP programme as a \u2018lifeline\u2019 for their operations (p.47).<\/p>\n

Rise and fall: project costs<\/strong><\/p>\n

With construction costs of \u00a31.3 billion, there were fears that the 320 megawatt (MW) Swansea Bay project would not be cost effective<\/a> for bill payers. Under the \u2018Contracts for Difference\u2019 (CfD) scheme, it was initially estimated that the \u2018strike price\u2019 \u2013 the guaranteed price needed for the sale of its electricity \u2013 would be more expensive than, for example, nuclear power from Hinkley Point C, and this would be met in part through increased consumers\u2019 bills.<\/p>\n

However, such costs were calculated on the basis of a 30-year model. As highlighted by the report, key economic characteristics of lagoons are low operation costs, and an ability to spread total costs across the very long operating life. When pricing over a longer 60- or 90-year CfD model, tidal lagoon energy becomes much more competitive. Swansea Bay, it concludes, would cost each Welsh household 30 pence per year, for 30 years, and could potentially be subsidy-free after 60 years (p.75). As a pathfinder lagoon, it is projected to bring about large cost reductions for any subsequent projects, making them very competitive with other low carbon technologies over project lifetimes.<\/p>\n

Looking ahead<\/strong><\/p>\n

The Review is clear in its support of developing a small-scale project in Swansea Bay \u2018as soon as reasonably practicable\u2019 (p.91), calling it a \u2018no-regrets\u2019 policy (p.89), and encourages the UK Government to build upon the progress it has made with TLP to move towards a final stage negotiation. TLP is also awaiting a marine licence from Natural Resources Wales.<\/p>\n

A key recommendation in the report was that the Swansea Bay lagoon should be operational for a reasonable period before construction commences on any large-scale projects, so that the full range of impacts can be monitored over time. This is in part a response to environmental concerns over potential lagoon impacts<\/a> on marine habitats and species, which carry considerable uncertainties that stem from the technology\u2019s infancy.<\/p>\n

To help maintain the supply chain during such a \u2018pause\u2019, the report calls for the development of a series of small-scale lagoons between larger projects. The Cabinet Secretary for Economy and Infrastructure said in Plenary<\/a> on 25 January 2017 that the Welsh Government is working with local government, skills providers and businesses to identify opportunities to maintain a constant pipeline of projects.<\/p>\n

There have been expressions of interest<\/a> by the Welsh Government in taking a stake in the Swansea Bay project, and Plaid Cymru have proposed a not-for-profit public energy company as a suitable organisation for doing so. A Welsh Government Debate will take place on 14 February 2017 to discuss these proposals, as well as the Review\u2019s findings, in detail.<\/p>\n

The UK Government will respond<\/a> to the Review\u2019s findings after it has assessed the report\u2019s recommendations.<\/p>\n

 <\/p>\n

This blog<\/a> was originally posted on 10\/02\/17 on the National Assembly for Wales Research Service’s blog, ‘In Brief<\/a>‘, where it is also available in Welsh<\/em>.<\/p>\n

 <\/p>\n

\"\"<\/a>Jack Miller began his PhD with SPRU<\/a> and CIED<\/a> in September 2014, conducting research into the role of energy efficiency in economic growth.\u00a0 His work centres upon the concepts of \u2018exergy\u2019 and \u2018useful work\u2019, or the portions of energy inputs into the economy which can prove useful to economic activity and societal needs.\u00a0 He completed an MSc in Energy Policy for Sustainability with SPRU in 2014, having undertaken a project looking at the prospects for future shale gas development in the US.\u00a0 He has a degree in Physics (MPhys hons, University of Sussex, 2013), and has previously taught maths and physics from KS3 to first-year undergraduate level.<\/p>\nFollow Sussex Energy Group \"Facebook\"<\/a>\"twitter\"<\/a>\"linkedin\"<\/a><\/span>","protected":false},"excerpt":{"rendered":"

The report of an independent review of UK tidal lagoon energy was published on 12 January 2017 by a former UK energy Minister Charles Hendry. The report praises the proposed \u2018pathfinder\u2019 tidal lagoon in Swansea Bay as a \u2018no-regrets option\u2019,…<\/span><\/p>\n

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