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Power From The Sea - Offshore Renewable Energy
Vanessa O’Connell as its new Development Project Director for the Dublin Array offshore wind farm
RWE Renewables Ireland has appointed Vanessa O’Connell as its new Development Project Director for the Dublin Array offshore wind farm. Dublin Array is a proposed 824MW offshore wind farm, which will be located about 10 kilometres from the coast of…
Simply Blue Group’s chief impact officer Dr Val Cummins
Ireland is “ about five years behind other countries” on floating offshore wind, Simply Blue Group’s chief impact officer Dr Val Cummins has said. Dr Cummins was responding to a reported call by Minister for Energy Eamon Ryan on fellow…
The new Ossian wind farm project in Scotland takes its name from a third-century Scottish leader, following his adventures across rolling seas
The “virtual” consultation on the Ossian wind farm project off the Scottish coast has included four live question and answer sessions, along with availability of documentation on the project’s website. The Ossian project is a joint venture between SSE Renewables…
The Government has updated Ireland’s national energy and climate draft plan for Europe, which has been opened for public consultation this week
Ireland’s strategy for offshore renewable energy are among topics incorporated in an updated draft of Ireland’s national energy and climate plan for Europe, which has been opened for public consultation this week. Minister for the Environment, Climate and Communications Eamon…
Angie Nagle, BladeBridge, and Donal Phelan, ESB, at the 2050 Sustainability Accelerator Showcase Event, September 2023
Repurposing decommissioned wind turbine blades into pedestrian bridges and e-bike charging stations is the focus of a new collaboration between the ESB and a Cork-based company. BladeBridge, a start-up specialising in wind turbine blade repurposing, is working with the ESB…
Midlands-North-West MEP Colm Markey
A Fine Gael MEP has called for EU investment in Irish ports to support development of renewable energy. Midlands-North-West MEP Colm Markey warned that Ireland cannot achieve energy security, and consumers will continue to face unpredictable energy costs unless there’s…
Next Generation Marine Turbine (from left to right) Dr William Finnegan, Assistant Professor and Principal Investigator on the CRIMSON project; James McHale, Research Associate; Ciarán Kennedy, Research Fellow; Tenis Ranjan, postgraduate; all with Construct Innovate and Ryan Institute at University of Galway with the 5m carbon fibre reinforced polymer foil which forms part of the 80kW RivGen marine hydrokinetic energy turbine
The University of Galway has confirmed the successful testing of a next-generation marine hydrokinetic turbine foil for renewable energy. The technology was designed by US-headquartered global leader in marine energy ORPC Ireland and fabricated by ÉireComposites, based Indreabhán, Co Galway.…
The framework sets out the pathway Ireland will take to deliver 20GW of offshore wind by 2040 and at least 37GW in total by 205, according to 
Minister for Environment and Climate Eamon Ryan
A consultation on Ireland’s long term plan for offshore renewable energy (ORE) has been welcomed by Minister for Environment and Climate Eamon Ryan. The consultation is on the “Future Framework” policy statement, described as a long-term model and vision for…
An update from Department of Agriculture, Food and Marine officials on aquaculture policy and licensing is also on the agenda at February's IFA Aquaculture Conference
Offshore renewable energy and its impact on Irish aquaculture and the implications of the Nature Restoration Law are among themes for this year’s annual Irish Farmers’ Association (IFA) aquaculture conference next month. An update from Department of Agriculture, Food and…
The Marine Institute has released a new high-resolution geomorphology map for most of the Irish continental shelf to support ocean science, environment and biodiversity management and offshore renewable energy development
The Marine Institute has released a new high-resolution geomorphology map on Ireland’s Marine Atlas for most of the Irish continental shelf to support ocean science, environment and biodiversity management and offshore renewable energy development. Geomorphology is the scientific study of…
Renewable energy visionary the late Eddie O’Connor
Minister for the Environment Eamon Ryan has paid tribute to businessman and renewable energy developer Eddie O’Connor, who has died at age 76 after an illness. The former Bord na Móna chief executive, who had trained as a chemical engineer…
An example of an offshore wind farm at Teeside on England’s North Sea coast
Ireland is well placed to seize the opportunities presented by a boon in offshore projects, according to the head of the National Maritime College of Ireland (NMCI). Speaking to The Journal ahead of the NMCI’s third annual Seafarers’ Conference next…
Fine Gael MEP Seán Kelly
Ireland should actively seek EU funding to integrate more offshore energy supplies, according to Fine Gael MEP Seán Kelly. Kelly, who represents the Ireland South constituency, was referring to the European Commission's plan to significantly scale-up investment in Europe's power…
Minister for Environment and Climate Eamon Ryan - the charter “reflects the ongoing coordinated effort and common vision across European countries to ensure the transition to clean energy
Ireland has signed up to a European wind charter to develop offshore and onshore wind. Part of the charter involves signing a voluntary “wind pledge” committing to deliver targets for 2024 to 2026, and pledging indicative targets for 2030 and…
The newly built survey support vessel, the Mainport Edge, for c.€16m
Irish Mainport Holdings Limited (“IMH”) today announced that it has agreed a multi-million euro equity investment from MML Growth Capital Partners Ireland Limited (“MML”) into Mainport Shipping Limited. Mainport Shipping is an integrated marine services business that charters survey support…
Increasing the resources of environmental NGOs will make an important contribution towards achieving effective future maritime spatial planning
An environmental network has been given additional funding of €1.1 million by Minister for Environment and Climate Eamon Ryan to “build capacity” in relation to planning for offshore wind. The extra funding of €1.1 million has been approved by the…

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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