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- Report:
Marine Energy Wales
The global resource potential for marine renewable energy is vast, and as yet, largely untapped. Theoretical estimates indicate that harnessing the incredible power of the sea could provide a clean, low carbon, sustainable electricity source to meet the demands of the entire planet.
With some of the best marine resources in the world, Wales is playing a vital role in this emerging…
- Report:
Mason and Driver
The wave and tidal sector is moving from single device demonstration sites to multi-device arrays. One of the challenges the industry faces is the design of a cost effective and efficient electrical network to collect and transmit power from these devices to the shore. For some projects, such as MeyGen in the Pentland Firth, the solution is to connect each turbine to the shore individually.…
- Report:
Driver
The marine energy industry has reached the stage where a number of devices have completed pre-commercial, full-scale demonstration. Over the next few years, array-level projects will start to be constructed. One of the challenges facing the marine energy industry is the need to reduce the Levelised Cost of Energy (LCOE) of these projects. The lack of a standard marine electrical architecture…
- Report:
Mason
This document is the first of three reports that consider the future options for an industry preferred marine energy electrical architecture. The work was commissioned by the Offshore Renewable Energy (ORE) Catapult under the umbrella of the Marine Farm Accelerator and carried out by TNEI Services.
Over the next few years, marine energy converters will develop from single device…
- Report:
ORE Catapult
The diverse range of technology concepts in tidal energy converters characterises this early stage of the tidal sector. However, in the last few years some technologies have been progressing faster towards the very first multiple deployments and commercialisation. The Horizontal Axis Tidal Turbine (HATT) is one of the more dominant configurations being developed. However, even within this “…
- Thesis:
Elhanafi
This research was performed with a focus on two key aspects of energy cost–reduction for offshore OWC devices; improving the power extraction efficiency and reducing the excess margin in structural safety factors by a better understanding of wave–induced loads on these devices. This study utilised information from three different resources. First, 2D and 3D numerical results from fully…
- Report:
Black & Veatch
MeyGen Phase 1A is a 6MW demonstration tidal stream energy array comprised of four 1.5MW tidal turbines in the Inner Sound of Scotland’s Pentland Firth. The project formerly entered its 25-year operations phase in April 2018. As the first multi-MW tidal array, MeyGen Phase 1A is a trail blazer for the industry. The lessons learnt throughout the design, construction and initial operations…
- Thesis:
Muralidharan
Ocean thermal energy conversion (OTEC) is a promising renewable energy technology to generate electricity and has other applications such as production of freshwater, seawater air-conditioning, marine culture and chilled-soil agriculture. Previous studies on the technology have focused on promoting it to generate electricity and produce energy-intensive products such as ammonia and hydrogen.…
- Conference Paper:
Borghi et al.
Ocean currents offer a green, renewable, and sustainable energy resource which can provide grid-scale power and acceptable capacity factors. Technology to harness these currents is still immature and not well understood. Of major concern are the construction, reliability, and performance of rotors fitted to turbines. The efforts of the collaborative partnership described in this paper are…
- Report:
Hodges et al.
Nations across the world recognise the potential benefits of ocean renewable energy, pursuing the development of new technologies and projects to take advantage of their natural resources. Wave and tidal stream projects, and the associated technology, have generated interest from governments, investors and developers, all keen to help build the sector. The successful transition from nascent…
- Journal Article:
Bucher and Bryden
Tidal current and wave power have made substantial progress towards commercialisation. Based on the successful testing of full-scale prototypes, pioneering tidal arrays are currently implemented by means of direct agreements between developers/investors and device manufacturers. The top-ranked risks for commercial projects (identified as achieving funding and uncertainty in device performance…
- Journal Article:
Cai et al.
Ocean energy is an underutilized renewable energy source compared with hydropower and wind power. Therefore, the development of economical and efficient wave energy converters (WECs) is important and crucial for offshore power generation. The mooring tensioner is a critical device that can be used in point-absorber-type WECs, semisubmersible floats for oil and gas drilling, and floating wind…
- Presentation:
Marone et al.
Cross-flow turbines (CFTs) are an attractive option for marine energy due to their ability to rotate in the same direction independent of the incident velocity. However, one of their main barriers to market entry is their levelized cost of energy (LCOE). Selecting non-traditional manufacturing processes for components of the turbine can play a role in making them a more competitive technology…
- Journal Article:
Finnegan et al.
Renewable energy is now accepted as the preferred alternative for electricity generation and as the replacement for fossil fuels. In recent years, tidal energy has shown promise as it is a more reliable source of renewable energy, compared to wind and solar, and 12 GWh of electricity from tidal energy was generated in 2020. As tidal technologies move closer to commercial…
- Book:
Graham-Jones and Summerscales
The marine environment presents significant challenges for materials due to the potential for corrosion by salt water, extreme pressures when deeply submerged and high stresses arising from variable weather. Well-designed fibre-reinforced composites can perform effectively in the marine environment and are lightweight alternatives to metal components and more durable than wood. Marine…
- Journal Article:
Chou et al.
Pressure retarded osmosis (PRO) is a promising membrane process to harvest the vast amount of free energy from the mixing of fresh and salty waters without adverse environmental impacts. A competent membrane for PRO should possess the features of high water permeability to allow water permeation, excellent salt rejection to maintain the osmotic driving force, low structure parameter to…
- Report:
Hodges et al.
This document is an output of IEA-OES Task 12, an activity of the International Energy Agency (IEA) Ocean Energy Systems (OES) Technology Collaboration Programme (TCP).
The task is led by the European Commission and delivered by Wave Energy Scotland (WES), the United States Department of Energy (DOE), Tecnalia (Spain) and other representatives of the IEA-OES Executive Committee.
…
- Journal Article:
Babarit et al.
In this study, systems engineering techniques are applied to wave energy to identify and specify stakeholders’ requirements for a commercially successful wave energy farm. The focus is on the continental scale utility market. Lifecycle stages and stakeholders are identified. Stakeholders’ needs across the whole lifecycle of the wave energy farm are analyzed. A list of 33 stakeholder…
- Conference Paper:
Hultman et al.
The wave power technology in this article has been developed at Uppsala University (UU), Sweden. The wave energy converter (WEC), consisting of a direct driven linear generator installed at the seabed, connected by a line to a point absorbing buoy, is illustrated in Figure 1. The direct driven magnetic part of the generator, the translator, follows the motion of the heaving ocean waves.…
- Conference Paper:
Garcia-Teruel et al.
Wave Energy Converter structures are associated with the highest percentage share of LCOE costs, however, existing geometry optimization studies just consider maximization of power production and, in some cases, mass as a proxy for structural costs. How to include cost factors related to geometry in the optimization process with a particular focus on design for manufacturing is discussed here…
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