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#OceanEnergy - Not only the subject of a new Irish-authored research paper, Ireland's ocean energy potential is the focus of an in-depth feature this week on Silicon Republic that highlights five research labs in Ireland's renewables sector.

Among them are the Lir National Ocean Test Facility at UCC's Beaufort Centre, with its state-of-the-art wave simulators, and the Centre for Ocean Energy Research based at Maynooth University, which has an on-campus wave tank for testing its mathematical simulations of ocean energy devices.

And there's also the Litmus Technology Trialling Centre, part of the Nimbus Centre at the Cork Institute of Technology devoted to connected technologies, which has developed a 'smart kite' now being used by the Naval Service to boost ships' speed and generate power while at sea.

Silicon Republic has much more on the story HERE.

Published in Power From the Sea
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#MarineScience - A unique opportunity to participate in the North South Atlantic Training Transect (NoSoAT) summer school and carry out ocean research in the North and South Atlantic Ocean is being offered to graduates of marine-related sciences from across the island of Ireland.

Applications are invited for up to 10 fully funded scholarships on-board the German research vessel RV Polarstern, which will leave Germany for this summer school in November and transit 14,000km to Cape Town, South Africa.

Along the transect, students will collect samples and data to help to increase our understanding of ocean processes and which will feed into a range of exciting research projects.

The joint mission between the Strategic Marine Alliance for Research & Training (SMART), the Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research (AWI) and the Partnership for Observation of the Global Oceans (POGO) will focus on training talented early-stage scientists in oceanographic research techniques and provide the skills and practical experience needed for a career in marine sciences.

Participants will get hands-on training in deployment and operation of scientific gear, acquisition and processing of the sample material and interpretation of the respective data. Work on board will also include lectures, data workshops, practical exercises and student presentations.

"Although over 70% of our planet is ocean there are lots of areas that are poorly observed and about which we have little knowledge," said Dr Pauhla McGrane, national coordinator of SMART Ireland.

"This collaborative effort with AWI and POGO will increase our understanding of the Atlantic Ocean as well as inspiring the marine scientists of tomorrow to sustainably mange our seas and oceans for future generations."

Prof Karen Wiltshire, vice-president of AWI and chair of POGO, added that "improving our knowledge of the ocean requires a new generation of well-trained researchers that are able to combine practical field work with modern methods like remote sensing or RNA sequencing.

"This pooled infrastructure and expertise provides an incredible chance for postgraduates to get the necessary practical experience and develop networking opportunities they need early in their careers.

"We are all delighted to be leading this strategic collaboration, which will promote mobility for a total number of 34 students from across Europe and Africa and increase multidisciplinary research capacity in Atlantic nations."

Graduates, postgraduates and post-doctoral students of marine-related sciences from across the island of Ireland are eligible to apply via SMART.

The closing date for applications is 7 June 2015. Applicants should make sure that they are available between 29 October and 2 December 2015 to account for pre- and post-cruise events and travel times. For further information on how to apply, visit the SMART website or contact [email protected].

Published in Marine Science

#MarineWildlife - A research paper produced in a joint project by the Irish Whale and Dolphin Group (IWDG) and the Galway-Mayo Institute of Technology (GMIT) was cited by an expert panel that has struck down Japan's plans to resume whaling in the Southern Ocean.

As the Guardian reports, the International Whaling Committee (IWC) panel said Japan's revised programme did to have enough detail to determine whether it needed to hunt whales in order to, as per its reasons, measure population sizes ahead of any return to commercial whaling, or gain "a better understanding of the Antarctic marine ecosystem".

"The current proposal does not demonstrate the need for lethal sampling to achieve those objectives," said the IWC experts' report.

The IWDG-GMIT paper lead authored by Dr Conor Ryan and published in Marine Ecology Progress Series in 2013, which details the collection of relevant data from live biopsy tissue samples, was cited by the experts as evidence contrary to Japan's assertions.

Japan was forced to revise its whaling programme in the face of controversy last year after the International Court of Justice ruled it was not whaling for scientific research purposes.

The IWDG says that the IWC's report "endorses the internationally significant work being carried out in Ireland and shows how this information can be used to inform important management decisions such as that offered by the IWC Expert Panel."

Other recent research work conducted by the IWDG includes a visual and acoustic survey of cetaceans during the annual Marine Institute bus whiting survey, and a review of the National Parks and Wildlife Service's National Cetacean Protection Strategy.

Published in Marine Wildlife

#MarineScience - The Marine Institute has secured €800,000 research funding from the Department of Agriculture, Food and the Marine to carry out three significant research projects that address the needs of the aquaculture and seafood industry in the areas of shellfish health and seafood safety.

The funding was announced yesterday (Thursday 1 December) by Marine Minister Simon Coveney as part of the FIRM (Food Institutional Research Measure) competitive research funding programme, and follows the news earlier this month that Ireland's marine researchers won €5.5 million in the latest EU Horizon 2020 funding round in the areas of 'blue growth' and sustainability.

The collaborative projects, which have a total value of €1.2 million, include research partners at NUI Galway, University College Cork and University College Dublin.

The projects will address current challenges in aquaculture and aim to further enhance the health status and food safety standards of farmed Irish shellfish; and ensure compliance with food/feedstuff standards for seaweed.

Dr Peter Heffernan, chief executive of the Marine Institute, welcomed the announcement, saying these projects "will build on the work we are doing in the areas of fish health and seafood safety, together with our research partners.

"We have a strong seafood safety regime in Ireland and these research awards will help to increase our knowledge and further enhance the quality and safety of Irish seafood products."

Dr Heffernan also acknowledged two further research award recipients in NUI Galway and Dublin City University who will focus their research on sustainable aquaculture production systems and mining marine material for novel functional ingredients.

Early in the new year the Marine Institute will seek to fill the three research posts arising from these projects.

Published in Marine Science

#Angling - Inland Fisheries Ireland (IFI) has just published three research reports on pike in Irish waters.

The Diet of Pike in Irish Watercourses aims to elucidate the variation in the diet of Irish pike between river, lake and canal habitats, and to quantify niche size and dietary specialisation and attempt to identify the timing of the switch to a piscivorous diet.

Ecomorphology of Pike in Irish Freshwaters deals with the morphology and condition of pike in Ireland.

Genetic Structure of Pike and their History in Ireland (which is available to download from the IFI website HERE) investigates the genetic variation of Irish pike populations and their relationship with European groups, in an attempt to identify where they came from, as it is largely assumed to have been introduced by humans over the past few hundred years.

The research was carried out as part of a wider PhD research project conceived by IFI and University College Dublin, with the overall aim of updating and informing managers as to the biology and ecology of pike (Esox lucius L.) in Ireland, a historically understudied species in the Irish context.

The field work and sampling for this project was carried out opportunistically in collaboration with IFI, and through attendance at many pike angling competitions.

The authors of these papers also thank the many pike anglers that contributed to the study and allowed D Pedreschi to sample their catch.

This study has been generously funded by IFI with contributions from the Irish Federation of Pike Angling Clubs.

Published in Angling
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#MarineScience - Two marine scientists associated with the Marine Institute through research carried out under the Sea Change Strategy have gone on to win support for specific small projects through the newly established International Council of the Exploration of the Sea (ICES) Science Fund.

Earlier this month ICES announced eight projects to be supported through the new Science Fund and focused on those that will add value to the ICES Science Plan of achieving integrated marine ecosystem understanding.

Dr Peter Heffernan of the Marine Institute congratulated Dr Sarah Kraak and Dr Kathryn Hughes on their projects being selected, saying: “It is a great achievement for the two researchers associated with the Marine Institute to be awarded the ICES funding.

"By encouraging researchers to engage with both academic and government institutions, this allows us to provide the best available science and knowledge and to make informed decisions of our ocean wealth at a national and international level.”

Dr Sarah Kraak from University College Cork is currently a postdoctoral fellow working on research to develop and test through simulation a suite of measures that will contribute to rebuilding depleted fish stocks in waters around Ireland carried out under the Sea Change Strategy and funded by the Marine Institute.

As lead scientist, Dr Kraak’s ICES project is called 'Insights from Behavioural Economics to improve Fisheries Management', and is co-lead by Ciaran Kelly from the Fisheries Ecosystem Advisory Services at the Marine Institute.

“Conventionally, fisheries management aims to modify the behaviour of fishers with laws and regulations," said Dr Kraak. "This method of a top-down control may not always fully achieve its objectives, owing to the interests of the individual fishermen.

"Therefore, using the discipline of Behavioural Economics, the project aims to research what drives human behaviour in fisheries. This approach may prove to be more useful in fisheries management and achieving sustainable resource exploitation."

In addition to the ICES funding, this project has already attracted a small grant from the Fisheries Society of the British Isles (FSBI).

The other project is a postdoctorate project led by Dr Kathryn Hughes from Bangor Universtiy in the UK. Dr Hughes recently completed her PhD on the impact of climate change on the distribution, biology and productivity of fish stocks in waters around Ireland, which was funded by the Marine Institute under Sea Change and co-supervised by Leonie Dransfeld from the Marine Institute.

Following completion of her PhD, Dr Hughes is now working on an international project called 'Developing Methods for Determining a Global Footprint of Mobile Bottom Fishing Using VMS Data', which aims to highlight the effects of trawling from countries that do not have the required resources to process and analyse raw fishing effort data.

ICES co-ordinates and promotes marine research in the North Atlantic Ocean, the North Sea, and the Baltic Sea, and advises international commissions and governments on marine policy and management issues related to the impacts of human activities on marine ecosystems and the management of the exploitation of living marine resources. ICES is working towards integrated ecosystem assessments and integrated advice, delivered at the regional seas level.

ICES is a network of more than 4,000 scientists from almost 300 institutes, with 1,600 scientists participating in activities annually from 20 member countries. To view the full list of projects and to follow their development, visit the ICES website HERE.

Published in Marine Science

#MarineScience - The Marine Institute has announced an additional call for funded ship time on the RV Celtic Explorer and the RV Celtic Voyager.

Applications are invited from research performing organisations including higher education institutions, public research bodies and industry to carry out ship-based research activity.

The areas of research may relate to: ecosystems approach to marine resource management; seabed processes and resources; climate/environmental change; renewable ocean energy; biodiscovery/biodiversity; novel marine technologies; and marine policy/legislati

Applications from early stage researchers, including PhD students or early post-doctoral researchers, are particularly encouraged to apply, to allow emerging marine scientists the opportunity to gain hands-on experience in undertaking ship-based research.

Applications will only be accepted for a limited number of days - one week in September 2014 on the RV Celtic Explorer, and up to three weeks with available dates in July, September, October and December 2014 on the RV Celtic Voyager.

The closing date for receipt of applications is 3pm on Thursday 17 April 2014. Applications must be submitted using the Research Vessel Operations' online Survey Planning System (SPS) and Research Information Management System (RIMS), which are available on www.marine.ie. (Please contact the Research Vessel Operations team at [email protected] to obtain a password for SPS.)

The Vessel Charter Guidelines 2014-1015 (Word doc 253KB) should be read carefully before submitting the Ship-Time Application Form.

Applicants may seek grant-aid to cover all or part of the vessel charter costs for research surveys. For information on eligibility for grant-aid and how to apply, read National Research Vessels 2014 Ship-Time Programme Grant Aid Guidelines (PDF 577KB).

Published in Marine Science

#MarineScience - The EU FP7 SEAS-ERA Marine Research Plan for the European Atlantic Sea Basin - Towards a Strategic Research Agenda/Marine Research Plan for the European Atlantic Sea Basin - is now available to view and download online.

The report proposes a vision for each of eight priority research areas and three critical supports/infrastructures to progress the Blue Growth Strategy in the European Atlantic Sea Basin.

For each sector (such as marine renewable energy, fisheries/aquaculture, maritime transport, etc) key research prioritisation exercises are referenced and an indicative list of research priorities identified.

Geoffrey O’Sullivan of the Marine Institute, representing the SEAS-ERA Atlantic partnership, presented the SEAS-ERA Atlantic report at the Lisbon Atlantic Conference from 4-5 December organised by the Portuguese Government to report progress on the implementation of 2011's EU Strategy for the Atlantic and this year's Atlantic Action Plan.

In his presentation, O’Sullivan argued that the SEAS-ERA Atlantic Report represented a source of information on the sectoral research priorities to be addressed in an Atlantic Sea Basin context to support the Blue Growth Strategy.

He welcomed the opportunity afforded to the SEAS-ERA Atlantic partnership to contribute to the development of the Atlantic Action Plan (2014-2020) and acknowledged the support of the European Commission in including the SEAS-ERA Atlantic Discussion Document (2011) on the Atlantic Forum website as background information.

“The real success of the SEAS-ERA Atlantic partnership [was] the input and influence the project had on development of the Atlantic Action Plan, published by the commission in May 2013,” he said.

The EU FP7 SEAS-ERA partnership will host its third SEAS-ERA Strategic Forum in Brussels on 25 February 2014.

The project is a network of European marine research funding organisations (RFOs) consisting of 21 partners and two third-parties from 18 member and associated member states located along the European seaboard in the Atlantic, Mediterranean and Black Sea.

The Marine Institute is a partner and joint lead with the European Marine Board (Ostend, Belgium) of Work Package 6.1: A draft Marine Research Plan for the European Atlantic Sea Basin.

The principle aims of the SEAS-ERA network are to improve co-operation between national competitive marine research funding programmes; to facilitate better co-operation in addressing shared opportunities and challenges; to ensure better use of existing resources and capacities; to bridge identified gaps; to avoid duplication; to jointly fund strategic projects of mutual interest and, in doing so, contribute to the sustainable development of the marine resource and progress the establishment of the marine component of the European Research Area (ERA).

The plan comes online with news that some €200 million has been earmarked for marine research and innovation for the first two years of the EU's Horizon 2020 programme that commences in the New Year.

Published in Marine Science

#MarineScience - Research projects in the marine sector will share in a €26 million grant fund announced by Minister Simon Coveney today (Thursday 28 November).

The projects supported cover a broad range of activities across the agri-food and marine sectors, with research in the latter concerned with applying novel processing technologies to fish.

Several of the projects deal with the health aspect of food, including research on marine peptides for glycemic management.

The minister said: “The agri-food and marine sectors have proven in recent years that they have the capacity to drive our economy through increased employment, value added and export growth and this announcement today of major funding for 51 projects will further build and maintain research capacity and capability in the industry.

"These awards will also provide training for over 80 post-graduate students and contract employment for almost 90 highly trained scientists all of which will be at the disposal of academia, regulators and the food industry going forward.”

The news comes a week after it was announced that marine research would get a special focus under the Horizon 2020 Programme, to be launched in Dublin on 10 December.

Full details of these awards are set out in the appendix attached below.

Published in Marine Science
Tagged under

#NativeSpecies - Inland Fisheries Ireland says it welcomes the publication of an important scientific paper relating to one of Ireland’s key angling species – pike.

Long thought to have been introduced to Ireland in the last few hundred years, the new research shows that the colonisation history of pike (Esox lucius) is more complex, with an indication that they may have colonised naturally some thousands of years ago.

Computer modelling of genetic data has indicated that the species probably colonised Ireland in two waves. The first occurred approximately 8,000 years ago, close to the end of the Ice Age, and the second occurred approximately 1,000 years ago, with the Normans.

This provides for the first time evidence for natural colonisation of a freshwater fish to the island of Ireland.

Minister of State Fergus O’Dowd said he welcomed the findings, and commended "the excellent collaboration between UCD and Inland Fisheries Ireland, who have recently signed a MOU to support this type of ground-breaking research”.

Dr Cathal Gallagher, head of research and development at IFI, said: “These important results will influence IFI’s ongoing management strategy for this species.

"Further investigations, using new and developing genomic techniques, will be used to endorse these findings.”

Lead author Debbi Pedreschi added that “what was really intriguing was how the examination of genetic material allowed us to build a hypothesis, which was then found to fit extremely well into the historical and archaeological background.”

Dr Mary Kelly-Quinn, who was co-supervisor of the project, said: “Debbi’s results will challenge us to consider the future management of this species and marks a significant contribution of a young researcher in this area.”

Prof Stefano Mariani, now at the University of Salford, believes that this investigation embodies the nature of conservation biology.

“We should always question long-held assumptions, and examine the best available evidence," he said. "At this point, it would be irresponsible to ignore these strong patterns of pike diversity, but we are also keen to investigate this further and provide a more exhaustive picture."

The study was conducted in partnership with UCD's School of Biology & Environment Science, and with support from the Irish Federation of Pike Angling Club and the University of Salford, under the co-supervision of Prof Mariani. The paper will be available online on Friday 18 October.

Published in Marine Wildlife
Tagged under
Page 7 of 11

Ireland's Offshore Renewable Energy

Because of Ireland's location at the Atlantic edge of the EU, it has more offshore energy potential than most other countries in Europe. The conditions are suitable for the development of the full range of current offshore renewable energy technologies.

Offshore Renewable Energy FAQs

Offshore renewable energy draws on the natural energy provided by wind, wave and tide to convert it into electricity for industry and domestic consumption.

Offshore wind is the most advanced technology, using fixed wind turbines in coastal areas, while floating wind is a developing technology more suited to deeper water. In 2018, offshore wind provided a tiny fraction of global electricity supply, but it is set to expand strongly in the coming decades into a USD 1 trillion business, according to the International Energy Agency (IEA). It says that turbines are growing in size and in power capacity, which in turn is "delivering major performance and cost improvements for offshore wind farms".

The global offshore wind market grew nearly 30% per year between 2010 and 2018, according to the IEA, due to rapid technology improvements, It calculated that about 150 new offshore wind projects are in active development around the world. Europe in particular has fostered the technology's development, led by Britain, Germany and Denmark, but China added more capacity than any other country in 2018.

A report for the Irish Wind Energy Assocation (IWEA) by the Carbon Trust – a British government-backed limited company established to accelerate Britain's move to a low carbon economy - says there are currently 14 fixed-bottom wind energy projects, four floating wind projects and one project that has yet to choose a technology at some stage of development in Irish waters. Some of these projects are aiming to build before 2030 to contribute to the 5GW target set by the Irish government, and others are expected to build after 2030. These projects have to secure planning permission, obtain a grid connection and also be successful in a competitive auction in the Renewable Electricity Support Scheme (RESS).

The electricity generated by each turbine is collected by an offshore electricity substation located within the wind farm. Seabed cables connect the offshore substation to an onshore substation on the coast. These cables transport the electricity to land from where it will be used to power homes, farms and businesses around Ireland. The offshore developer works with EirGrid, which operates the national grid, to identify how best to do this and where exactly on the grid the project should connect.

The new Marine Planning and Development Management Bill will create a new streamlined system for planning permission for activity or infrastructure in Irish waters or on the seabed, including offshore wind farms. It is due to be published before the end of 2020 and enacted in 2021.

There are a number of companies aiming to develop offshore wind energy off the Irish coast and some of the larger ones would be ESB, SSE Renewables, Energia, Statkraft and RWE.

There are a number of companies aiming to develop offshore wind energy off the Irish coast and some of the larger ones would be ESB, SSE Renewables, Energia, Statkraft and RWE. Is there scope for community involvement in offshore wind? The IWEA says that from the early stages of a project, the wind farm developer "should be engaging with the local community to inform them about the project, answer their questions and listen to their concerns". It says this provides the community with "the opportunity to work with the developer to help shape the final layout and design of the project". Listening to fishing industry concerns, and how fishermen may be affected by survey works, construction and eventual operation of a project is "of particular concern to developers", the IWEA says. It says there will also be a community benefit fund put in place for each project. It says the final details of this will be addressed in the design of the RESS (see below) for offshore wind but it has the potential to be "tens of millions of euro over the 15 years of the RESS contract". The Government is also considering the possibility that communities will be enabled to invest in offshore wind farms though there is "no clarity yet on how this would work", the IWEA says.

Based on current plans, it would amount to around 12 GW of offshore wind energy. However, the IWEA points out that is unlikely that all of the projects planned will be completed. The industry says there is even more significant potential for floating offshore wind off Ireland's west coast and the Programme for Government contains a commitment to develop a long-term plan for at least 30 GW of floating offshore wind in our deeper waters.

There are many different models of turbines. The larger a turbine, the more efficient it is in producing electricity at a good price. In choosing a turbine model the developer will be conscious of this ,but also has to be aware the impact of the turbine on the environment, marine life, biodiversity and visual impact. As a broad rule an offshore wind turbine will have a tip-height of between 165m and 215m tall. However, turbine technology is evolving at a rapid rate with larger more efficient turbines anticipated on the market in the coming years.

 

The Renewable Electricity Support Scheme is designed to support the development of renewable energy projects in Ireland. Under the scheme wind farms and solar farms compete against each other in an auction with the projects which offer power at the lowest price awarded contracts. These contracts provide them with a guaranteed price for their power for 15 years. If they obtain a better price for their electricity on the wholesale market they must return the difference to the consumer.

Yes. The first auction for offshore renewable energy projects is expected to take place in late 2021.

Cost is one difference, and technology is another. Floating wind farm technology is relatively new, but allows use of deeper water. Ireland's 50-metre contour line is the limit for traditional bottom-fixed wind farms, and it is also very close to population centres, which makes visibility of large turbines an issue - hence the attraction of floating structures Do offshore wind farms pose a navigational hazard to shipping? Inshore fishermen do have valid concerns. One of the first steps in identifying a site as a potential location for an offshore wind farm is to identify and assess the level of existing marine activity in the area and this particularly includes shipping. The National Marine Planning Framework aims to create, for the first time, a plan to balance the various kinds of offshore activity with the protection of the Irish marine environment. This is expected to be published before the end of 2020, and will set out clearly where is suitable for offshore renewable energy development and where it is not - due, for example, to shipping movements and safe navigation.

YEnvironmental organisations are concerned about the impact of turbines on bird populations, particularly migrating birds. A Danish scientific study published in 2019 found evidence that larger birds were tending to avoid turbine blades, but said it didn't have sufficient evidence for smaller birds – and cautioned that the cumulative effect of farms could still have an impact on bird movements. A full environmental impact assessment has to be carried out before a developer can apply for planning permission to develop an offshore wind farm. This would include desk-based studies as well as extensive surveys of the population and movements of birds and marine mammals, as well as fish and seabed habitats. If a potential environmental impact is identified the developer must, as part of the planning application, show how the project will be designed in such a way as to avoid the impact or to mitigate against it.

A typical 500 MW offshore wind farm would require an operations and maintenance base which would be on the nearby coast. Such a project would generally create between 80-100 fulltime jobs, according to the IWEA. There would also be a substantial increase to in-direct employment and associated socio-economic benefit to the surrounding area where the operation and maintenance hub is located.

The recent Carbon Trust report for the IWEA, entitled Harnessing our potential, identified significant skills shortages for offshore wind in Ireland across the areas of engineering financial services and logistics. The IWEA says that as Ireland is a relatively new entrant to the offshore wind market, there are "opportunities to develop and implement strategies to address the skills shortages for delivering offshore wind and for Ireland to be a net exporter of human capital and skills to the highly competitive global offshore wind supply chain". Offshore wind requires a diverse workforce with jobs in both transferable (for example from the oil and gas sector) and specialist disciplines across apprenticeships and higher education. IWEA have a training network called the Green Tech Skillnet that facilitates training and networking opportunities in the renewable energy sector.

It is expected that developing the 3.5 GW of offshore wind energy identified in the Government's Climate Action Plan would create around 2,500 jobs in construction and development and around 700 permanent operations and maintenance jobs. The Programme for Government published in 2020 has an enhanced target of 5 GW of offshore wind which would create even more employment. The industry says that in the initial stages, the development of offshore wind energy would create employment in conducting environmental surveys, community engagement and development applications for planning. As a site moves to construction, people with backgrounds in various types of engineering, marine construction and marine transport would be recruited. Once the site is up and running , a project requires a team of turbine technicians, engineers and administrators to ensure the wind farm is fully and properly maintained, as well as crew for the crew transfer vessels transporting workers from shore to the turbines.

The IEA says that today's offshore wind market "doesn't even come close to tapping the full potential – with high-quality resources available in most major markets". It estimates that offshore wind has the potential to generate more than 420 000 Terawatt hours per year (TWh/yr) worldwide – as in more than 18 times the current global electricity demand. One Terawatt is 114 megawatts, and to put it in context, Scotland it has a population a little over 5 million and requires 25 TWh/yr of electrical energy.

Not as advanced as wind, with anchoring a big challenge – given that the most effective wave energy has to be in the most energetic locations, such as the Irish west coast. Britain, Ireland and Portugal are regarded as most advanced in developing wave energy technology. The prize is significant, the industry says, as there are forecasts that varying between 4000TWh/yr to 29500TWh/yr. Europe consumes around 3000TWh/year.

The industry has two main umbrella organisations – the Irish Wind Energy Association, which represents both onshore and offshore wind, and the Marine Renewables Industry Association, which focuses on all types of renewable in the marine environment.

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