Marine energy

2007 ◽  
Vol 365 (1853) ◽  
pp. 971-992 ◽  
Author(s):  
David Kerr
Keyword(s):  
Significant Contribution ◽  
Current Status ◽  
Potential Contribution ◽  
Tidal Power ◽  
Realistic Potential ◽  
Marine Energy ◽  
Tidal Stream ◽  
Tidal Stream Energy ◽  
The Uk ◽  
Electrical Generation

Marine energy is renewable and carbon free and has the potential to make a significant contribution to energy supplies in the future. In the UK, tidal power barrages and wave energy could make the largest contribution, and tidal stream energy could make a smaller but still a useful contribution. This paper provides an overview of the current status and prospects for electrical generation from marine energy. It concludes that a realistic potential contribution to UK electricity supplies is approximately 80 TWh per year but that many years of development and investment will be required if this potential is to be realized.

scholarly journals A review of the UK and British Channel Islands practical tidal stream energy resource

2021 ◽  
Vol 477 (2255) ◽  
Author(s):  
Daniel Coles ◽  
Athanasios Angeloudis ◽  
Deborah Greaves ◽  
Gordon Hastie ◽  
Matthew Lewis ◽  
...  
Keyword(s):  
Gas Turbines ◽  
Ecological Impact ◽  
Field Measurements ◽  
Combined Cycle ◽  
Channel Islands ◽  
National Scale ◽  
Wide Range ◽  
Tidal Stream ◽  
Tidal Stream Energy ◽  
The Uk

This review provides a critical, multi-faceted assessment of the practical contribution tidal stream energy can make to the UK and British Channel Islands future energy mix. Evidence is presented that broadly supports the latest national-scale practical resource estimate, of 34 TWh/year, equivalent to 11% of the UK’s current annual electricity demand. The size of the practical resource depends in part on the economic competitiveness of projects. In the UK, 124 MW of prospective tidal stream capacity is currently eligible to bid for subsidy support (MeyGen 1C, 80 MW; PTEC, 30 MW; and Morlais, 14 MW). It is estimated that the installation of this 124 MW would serve to drive down the levelized cost of energy (LCoE), through learning, from its current level of around 240   £ / MWh to below 150   £ / MWh , based on a mid-range technology learning rate of 17%. Doing so would make tidal stream cost competitive with technologies such as combined cycle gas turbines, biomass and anaerobic digestion. Installing this 124 MW by 2031 would put tidal stream on a trajectory to install the estimated 11.5 GW needed to generate 34 TWh/year by 2050. The cyclic, predictable nature of tidal stream power shows potential to provide additional, whole-system cost benefits. These include reductions in balancing expenditure that are not considered in conventional LCoE estimates. The practical resource is also dependent on environmental constraints. To date, no collisions between animals and turbines have been detected, and only small changes in habitat have been measured. The impacts of large arrays on stratification and predator–prey interaction are projected to be an order of magnitude less than those from climate change, highlighting opportunities for risk retirement. Ongoing field measurements will be important as arrays scale up, given the uncertainty in some environmental and ecological impact models. Based on the findings presented in this review, we recommend that an updated national-scale practical resource study is undertaken that implements high-fidelity, site-specific modelling, with improved model validation from the wide range of field measurements that are now available from the major sites. Quantifying the sensitivity of the practical resource to constraints will be important to establish opportunities for constraint retirement. Quantification of whole-system benefits is necessary to fully understand the value of tidal stream in the energy system.

scholarly journals Scottish Islands Interconnections: Modelling the Impacts on the UK Electricity Network of Geographically Diverse Wind and Marine Energy

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3175
Author(s):  
Chris Matthew ◽  
Catalina Spataru
Keyword(s):  
Marine Energy ◽  
Geographic Diversity ◽  
Island Group ◽  
Tidal Stream ◽  
Spatial Diversification ◽  
Using Data ◽  
The Uk ◽  
The Impact ◽  
Forecasting Errors ◽  
To Receive

To meet climate change goals, the decarbonisation of the UK electricity supply is crucial. Increased geographic diversity and resource use could help provide grid and market stability and reduce CO2 intensive balancing actions. The main purpose of this research is to investigate the impact of geographic diversity and Scottish island renewable energy on the UK network. This has been done by using the energy market modelling software PLEXOS with results validated using data for 2017/18. The model considers spatial diversification and forecasting errors by modelling day-ahead and intra-day markets with nodes for each distribution network operator region and island group. It was concluded that Scottish island renewable capacity could have a stabilising effect on the variability of renewables in terms of electricity generated, prices and forecasting errors, from the timescale of the entire year down to hours. The ability of geographically diverse generators to receive a higher price for electricity generated was shown to decrease with increased island capacity. Instances of negative prices were reduced with supply diversity (wind and marine) but not geographic diversity. Day ahead errors showed most clearly the impact of diversity of supply, particularly given the predictability of tidal stream generation.

scholarly journals Prospects for Tidal Stream Energy in the UK and South America: A Review of Challenges and Opportunities

Polytechnica ◽  
2019 ◽  
Vol 2 (1-2) ◽  
pp. 97-109
Author(s):  
C. R. Vogel ◽  
D. T. Taira ◽  
B. S. Carmo ◽  
G. R. S. Assi ◽  
R H. J. Willden ◽  
...  
Keyword(s):  
South America ◽  
Challenges And Opportunities ◽  
Tidal Stream ◽  
Tidal Stream Energy ◽  
The Uk

scholarly journals A Numerical Methodology for Simple Optimization of Marine Hydrokinetic Turbine Array

2020 ◽  
Author(s):  
Soheil Radfar ◽  
Roozbeh Panahi
Keyword(s):  
Tidal Power ◽  
Hydrokinetic Turbines ◽  
Hydrokinetic Turbine ◽  
Wide Range ◽  
Tidal Stream ◽  
Tidal Stream Energy ◽  
Marine Hydrokinetic ◽  
High Level ◽  
The Cost ◽  
Promising Type

Tidal stream energy, due to its high level of consistency and predictability, is one of the feasible and promising type of renewable energy for future development and investment. Applicability of Blade Element Momentum (BEM) method for modeling the interaction of turbines in tidal arrays has been proven in many studies. Apart from its well-known capabilities, yet there is scarcity of research using BEM for the modeling of tidal stream energy farms considering full scale rotors. In this paper, a real geographical site for developing a tidal farm in the southern coasts of Iran is selected. Then, a numerical methodology is validated and calibrated for the selected farm by analyzing array of turbines. A linear equation is proposed to calculate tidal power of marine hydrokinetic turbines. This methodology narrows down the wide range of turbine array configurations, reduces the cost of optimization and focuses on estimating best turbine arrangements in a limited number of positions.

scholarly journals Opportunities for intervention and innovation in school food within UK schools

2020 ◽  
pp. 1-5
Author(s):  
JV Woodside ◽  
A Adamson ◽  
S Spence ◽  
T Baker ◽  
MC McKinley
Keyword(s):  
Disease Risk ◽  
Communicable Disease ◽  
Current Status ◽  
School Food ◽  
Food Research ◽  
Food Network ◽  
Research Themes ◽  
Food And Nutrition ◽  
Health Promoting ◽  
The Uk

Abstract We have recently been funded by the UK Prevention Research Partnership (UKPRP) to develop a UK school food network. The overarching aim is to build a community working towards a more health-promoting food and nutrition system in UK schools (primary and secondary). Here we describe the current status of school food research, including a review of the literature supporting the health-promoting schools approach and outline the opportunities for intervention and innovation establishment of the network present. Key potential school food research themes are described, and their prioritisation within the network, as well as network activities that have been planned, with the ultimate ambition of reducing socio-economic diet-related inequalities, and, consequently, non-communicable disease risk.

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