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April 2006 Bulletin IEA Ocean Energy Systems


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									     NEWSLETTER                                              New Publication

                   April 2006                ISSUE 6

                                                             Research Priorities on Ocean Energy
Contents                                                    By Katrina Polaski

New Publication _1
New Projects_2
                                                             The IEA Renewable Energy Working
National Activities_3
                                                             Party held a one day seminar on
Agenda Events on Ocean Energy_4
                                                             Renewable Energy R,D&D Priorities
Implementing Agreement Information_4
                                                             last year at which each of the
                                                             technology          Implementing
                                                             Agreements in renewable energy
Editorial                                                    and the hydrogen Implementing

Welcome to the sixth issue of the IEA OES Newsletter.
                                                             Agreement gave presentations.

This issue publication follows the recent launch of a
significant IEA report, drafted by the IEA’s Renewable
                                                             Learnings from this seminar were

Energy Unit, on R&D Priorities for Renewable Energy.
                                                             incorporated in the latest IEA

The contribution of the IEA-OES to this work, through
                                                             publication on renewable energy

participation in the March 2005 seminar on R&D
                                                             "Renewable          Energy:   RD&D

priorities, is detailed in this newsletter. Other recent
                                                             Priorities" launched on February

activities in ocean energy in Ireland and in the newest

contracting party to the IEA OES, the United States,
also feature. It is worth noting that the two articles
                                                             The IEA OES Implementing Agreement participated with a presentation and

identify activities relevant to some of the areas in which
                                                             the submission of a brief paper on the R,D&D priorities for the five classes

the IEA OES is currently looking to initiate research.
                                                             of ocean energy; wave, tidal, marine current, ocean thermal and salinity

Highlighted in the article on activities in Ireland is the

recent launch of a quarter scale test site. The agencies
responsible for the site were both active participants
                                                             The IEA OES contribution recognized the role that ocean energy would and

in the March 29th IEA OES sponsored meeting to define
                                                             potentially could play in the near to long term as follows.

a work programme to further the Annex II research on
developing testing and evaluation procedures and
                                                             In the near term, ocean energy technologies will continue prototype deployment

standards for ocean energy devices.       The Roosevelt
                                                             and investigation of multi-device large scale deployments. In the medium

Island tidal project article indicates that the tidal
                                                             term, these technologies may become a significant contributor to those

turbines to be deployed in New York’s East River will
                                                             markets adjacent to the most accessible resource. In the longer term, when

be connected to electricity loads on the island. The
                                                             hydrocarbon scarcity becomes an increasing constraint and new forms of

IEA OES is holding its second expert group meeting to
                                                             energy transmission are justified, ocean energy could become a much more

discuss research needs in connecting ocean energy
                                                             important part of the world’s energy portfolio.

devices to electricity grids on April 28th in Vancouver,
Canada. Experience from projects such as the Roosevelt
                                                             A number of research priorities that are common across all of the ocean

Island project will be important in providing
                                                             energy classes were identified including:

information on the power output characteristics from
                                                             · maximise knowledge transfer opportunities from other offshore energy

ocean energy devices. It is hoped that the work of both
                                                             technologies and other renewable energies;

of these meetings will lead to further IEA OES Annex
                                                             · develop standards for testing and measurement performance of ocean

reports for publication in 2006.
                                                             energy systems;
                                                             · increase our understanding of the impacts of ocean energy systems on
By Katrina Polaski                                           the environment, and of the often harsh marine environment on ocean energy
Chair of the IEA-OES                                         systems;
                                                             · assess the resource with consistent methods to facilitate accurate market
                                                             size predictions;
                                                             · demonstrate the potential for economies of scale through deployment of
                                                             multiple ocean energy system devices in arrays;
                                                             · develop appropriate design codes and fatigue standards for ocean energy
                                                             · develop safety procedures for installation, maintenance and deployment;
                                                             · adapt control systems to the marine environment.

                                                             Priorities specific to each of the classes where research and development
                                                             are continuing were also identified. This excluded tidal barrage technology
                                                             as this is considered mature and of low interest due to severe environmental
                                                             impacts and high cost.
New Projects                                                                                                                             Kinetic Hydro
                                                                                                                                    Power System (KHPS)

R o o s e v e l t I s l a n d Ti d a l E n e r g y P r o j e c t
Environmental Study and Operational Performance
By Trey Taylor, Verdant Power, USA

As a first step toward developing and submitting a license application
to the U.S. Federal Energy Regulatory Commission (FERC), Verdant
Power will conduct an 18-month study to identify and document the
                                                                         A protected area around the array will be established using a pair of
environmental impacts and operational performance of six Kinetic
                                                                         buoys and a floating security boom installed around the field’s periphery
Hydro Power Systems (KHPS) in the East Channel of the East River
                                                                         in accordance with United States Coast Guard requirements, to warn
– Phase 2 of the New York´s Roosevelt Island Tidal Energy (RITE)
                                                                         and restrict navigation in this area. The entire protected area will
Project. Since these systems have never been deployed at an
                                                                         extend 165 ft (50m) into the channel from the Roosevelt Island eastern
operational site, Verdant Power and the federal and state resource
                                                                         bulkhead, and enclose a total area of approximately 1.41 acres
agencies need empirical evidence of environmental impacts and                      2
                                                                         (5700m ).
operational performance. These systems are designed to have
minimal or no impacts, but the design must be demonstrated and
                                                                         Verdant Power’s approach to this study is one of risk mitigation. The
documented for all resource agencies. The purpose of this 18-
                                                                         company is committed to conducting the study in a way that any
month study is to provide that documentation at this site to support
                                                                         potential for significant environmental risk is absolutely minimized. To
the FERC license application.
                                                                         ensure that the turbines are not affecting the local fish populations in

The five environmental study areas that will be performed are:           any significant way, Verdant Power will initially deploy two turbines

1) Fish Movement and Protection, 2) Navigation and Security, 3)          and very carefully monitor fish behavior and impact in the vicinity of

Recreational Resources, 4) Historical Resources, and 5) Water            the two turbines.

Quality. These studies will be performed using stakeholder task
teams, including fisherman representatives. The most extensive           Following six to eight weeks of monitoring and no demonstrable impact,

study will be fish movement and protection.                              Verdant Power will deploy units three through six. At any time, if any
                                                                         significant impact is identified or observed the turbines will be stopped
The operational study will evaluate total system efficiency from the     and remedial actions will be developed and implemented with resource
turbines and generators to two partner facilities on Roosevelt Island    agency staff. Ultimately, if the impacts cannot be managed, the turbines
– Gristede’s Supermarket and the Roosevelt Island Operating              will be removed and redesigned.
Corporation Parking Garage. Electricity during the study will be
delivered to these partners at no charge to evaluate system              The fish movement and protection study was designed by some of the
operational performance.                                                 country’s leading hydropower fisheries biologists and fish management
                                                                         experts, including specifically the Environmental Sciences staff from
Some of the key characteristics of the six temporary KHPS to be
                                                                         the Department of Energy’s Oak Ridge National Laboratories, and fish
deployed are:
                                                                         biologists from Devine Tarbell and Associates, a leading hydropower
· Very Low rpm – The revolutions per minute of these five-meter          licensing consulting firm. Designed in collaboration with resource
diameter turbines is 32 rpm. Conventional hydro turbines that entrain    agency fisheries staff the fish movement and protection study includes
fish turn at 600-700 rpm and have no space for fish to move as           the following aspects.
they approach a turbine. At the very tip of the five-meter turbine
                                                                         · Six months of preliminary fish monitoring in the East Channel prior
blunt rotor, the speed is approximately 25 ft. /sec. (7,6 m/s) which
                                                                         to deployment of the initial two turbines.
is at or below turbine speeds shown to impact fish. Away from the
                                                                         Using fixed and mobile hydroacoustic transducers and netting, Verdant
rotor tip, speed is significantly below that and should have no impact
                                                                         Power will baseline fish movements through the East Channel by
at all in event of a strike.
                                                                         volume and types of fish for six months prior to the initial deployment.
· Open and Wide Spacing – The turbines are deployed 40-100ft.
                                                                         · Fixed hydroacoustic monitoring of fish movement and behavior
(12-30m) apart in the free flow of the river allowing much open
                                                                         t h r o u g h o u t t h e s i x t u r b i n e a r r a y, 2 4 / 7 f o r t h e 1 8 m o n t h s .
space for fish to avoid the turbines.
                                                                         Hydroacoustic transducers will be designed, fabricated and deployed
· Very Small Footprint in the East Channel – This project is located     which will monitor fish behavior and impact throughout the study. For
in the East Channel of the East River just north of the Roosevelt        the six turbines, 18 transducers will be fabricated and deployed to
Island Bridge adjacent to Roosevelt Island. The turbine array itself     monitor fish in both their movements toward and away from the turbines
will occupy an area approximately 77 ft (23m) wide (east to west)        as well as in the immediate vicinity of the turbines.
and and 217 ft (66m) long (north to south) or approximately
                                                                         · Supporting mobile surveys and netting throughout the study timeframe.
0.38 acres (1518 m ). The turbines will be spaced approximately
                                                                         Monthly for the first 12 months of the study and then quarterly, Verdant
40 ft (12m) apart (east to west) and deployed in three rows of two
                                                                         Power will perform supporting mobile surveys and netting to ground
with each row 100 ft (30m) apart (north to south) in water depths of
                                                                         truth fish movements through the area.
approximately 30 ft (9m).
National Activities

O c e a n E n e r g y D e v e l o p m e n ts i n I r e l a n d
By Graham Brennan, SEI
Renewable Energy RD&D Programme Manager

Sustainable Energy Ireland (SEI) and the Marine Institute          A number of wave energy developers are currently being supported by
are the primary agencies responsible for supporting the            national agencies. In order to assess and categorise developers, SEI
development of ocean energy in Ireland. Ireland has a              and the Marine Institute employ a Prototype Development Protocol
significant wave energy resource on its doorstep with              developed by the Hydraulics & Martime Research Center based at
average theoretical wave energy intensity levels reaching          University College Cork. This allows the level of risk associated with each
80kW/m wave length off the west coast.                A detailed   project to be consistently assessed before committing national funds to
assessment of Ireland’s practical wave energy resource             the development process thereby maximising the effectiveness of funds.
was recently completed. This study focused on the wave

energy resource within a 100km distance from the Irish             A quarter scale test site was recently opened by SEI and the Marine
coastline as this was considered to be a reasonable                Institute. The test site is approximately 600m x 500m in size with a water
estimate of economic range for deploying wave energy               depth of 20m. It is located in Galway Bay near the coastal town of Spiddal.
generators. In the assessment, an estimate of energy               The site is marked by four cardinal buoys with a waverider buoy providing
capture and spacing for a wave energy generator was                wave energy information at the site. Site access requirements which
assumed in order to derive the resource value. The practical       cover safety and design criteria have been developed. It is intended to
wave energy resource for Ireland was therefore estimated           use the site for a range of quarter scale prototype tests over the coming
to be 24TWh per annum. This is sufficient electricity to           years. The first device to enter the test site was the Wavebob project
supply 94% of the Republic of Ireland’s 2004 total electrical      which was successfully installed in March this year.

A parallel study investigating the potential for marine current

tidal power has also been completed. In this case, the

practical tidal energy resource available to Ireland is 2.6TWh

per annum which is sufficient to supply 10% of Ireland’s

2004 total electrical requirement.

                                                                                  Installation of Wavebob in Galway Bay test site

                                                                   SEI and the Marine Institute are assisting the Irish Government with the

                                                                   preparation of an Ocean Energy Strategy which will outline a development

                                                                   path for ocean energy technology in Ireland. This strategy is expected
                 Ocean Energy Buoy scale model
                                                                   to be launched in 2006.
Agenda Events on Ocean Energy                                       Implementing Agreement Information

                                                                    Mission of the IEA-OES Programme
    FORTHCOMING CONFERENCES                                         _ The Implementing Agreement on Ocean Energy Systems commenced in
                                                                    October 2001.
CANADA AND THE WORLD OF OCEAN RENEWABLE                             _ The Agreement's mission is to enhance international collaboration to make ocean
ENERGY                                                              energy technologies a significant energy option in the mid-term future.
Victoria, British Columbia                                          _ Through the promotion of research, development, demonstration and information
4-5 May 2006                                                        exchange and dissemination, the Agreement's objective is to lead to the deployment
http://www.iea-oceans.org/events/                                   and commercialization of Ocean Energy Technologies.
                                                                    _Current priorities are ocean waves and marine current systems.
ISOPE 2006
The Annual International Offshore and Polar Engineering
                                                                                    and Executive Committee Members
                                                                    Member CountriesMember
                                                                     Country                                Alternate
San Francisco, California, USA                                       CANADA
May 28 - June 2 2006                                                                     Gouri Bhuyan
http://www.isope.org/                                                                    Email: gouri.bhuyan@powertechlabs.com
OMAE 2006                                                                                Jan Bünger                          Kim Nielsen
The 25th International Conference on Offshore Mechanics and                              Email: jbu@ens.dk                   Email: kin@ramboll.dk
Artic Engineering                                                    IRELAND
Hamburg, Germany                                                                         Katrina Polaski                     Tony Lewis
4 - 9 June 2006                                                                          Email: katrina.polaski@sei.ie       Email: tlewis@indigo.ie
http://www.ooae.org/omae/omae2006/omae2006.htm                       JAPAN
                                                                                         Yasuyuki Ikegami                Hirofumi Arima
2006 EUROPEAN RENEWABLE ENERGY POLICY                                                    Email:ikegami@ioes.saga-u.ac.jp Email:arima@ioes.saga-u.ac.jp
CONFERENCE                                                           PORTUGAL
Brussels, Belgium                                                                        Teresa Pontes                       António Falcão
12 - 14 September 2006                                                                   Email: teresa.pontes@ineti.pt       Email: falcao@hidro1.ist.utl.pt
                                                                     UNITED STATES OF AMERICA
                                                                                         Jim Ahlgrimm                  Michael Robinson
WORLD RENEWABLE ENERGY CONGRESS IX                                                       Email:jim.ahlgrimm@ee.doe.gov Email: mike_robinson@nrel.gov
Florence, Italy
                                                                     UNITED KINGDOM
19 - 25 August 2006
                                                                                         Gary Shanahan
ENER 06                                                              EUROPEAN COMMISSION
Renewable Energies, Security and Integrity of the Electrical Grid                        Komninos Diamantaras
Figueira da Foz, Portugal                                                                Email:komninos.diamantaras@cec.eu.int
27 - 30 September 2006

RENEWABLE ENERGY 2006                                                  Executive Secretary                               Operating Agents
International Conference and Exhibition
Makuhari Messe, Chiba, Japan                                           Ana Brito e Melo                                  ANNEX I – Review, exchange and
9 - 13 October 2006                                                    iea.oes@wave-energy-centre.org                    dissemination of information on OES
http://www2.convention.co.jp/re2006/#                                                                                    João Henriques
                                                                                                                         Email: joao.campos@ineti.pt
Deutschen Schifffahrtsmuseum, Bremerhaven, Germany, 23-24                                                                ANNEX II – Development of
October 2006                                                                                                             recommended practices for testing and
http://www.otti.de/guenther/                                                                                             evaluating OES
                                                                                                                         Kim Nielsen
                                                                                                                         Email: kin@ramboll.dk
                                                                    How to participate in the IEA-OES
International Energy Agency
                                                                    If your country has not signed the Implementing Agreement, contact the Executive
Information on the currently active IEA Implementing Agreements
http://www.iea.org/Textbase/techno/index.asp                        Committee Chairperson who will provide you with information on how to proceed.If
                                                                    your country has signed the Implementing Agreement contact the Executive
CADDET (Centre for the Analysis and Dissemination of                Committee member from your country or the Operating Agent of the Task(s) you
Demonstrated Energy Technologies)
Current source of information on the technologies, markets,         are interested in.
econo-mics, barriers and other factors that affect the global
supply and use of energy in a climate-friendly way                  The IEA-OES Website
                                                                    For further information about the Implementing Agreement on Ocean Energy
European Wave Energy Thematic Network                               Systems please consult the webpage. Our Internet address is:
Dissemination of activities of the Wave Energy research and         http://www.iea-oceans.org
development community under the auspices of the European
Commission's Energy, Environment and Sustainable Development
http://www.wave-energy.net                                                                             Publication _ IEA-OES Executive Committee
                                                                                                       Acting Editor _ IEA-OES
ATLAS web site
Comprehensive review of technologies relevant to the whole                                             Design _ INETI - DER
non-nuclear energy field undertaken by the European Network                                            Circulation _ 500 exemplars
of Energy Agencies on behalf of Directorate General XVII of the
European Commission                                                                                    Printing _ CLIO - Artes Gráficas
http://europa.eu.int/comm/energy_transport/atlas/homeu.html                                            ISBN _ 1645-7811

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