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Multi-use offshore farms Open innovation demonstration day by Marin

Map the way forward Overview of workshop results

Introduction Marin carries out an open innovation project for multi-use of offshore farms. Long term goal is to maximise the energy and food production in the North Sea in an ecological friendly manner. In an open innovation sprint in the beginning of September 2018 novel concepts were ideated and designed with a diverse group of professionals from different organisations. Hereafter Marin modelled and built the prototype solutions to be tested and demonstrated in the offshore basin.

During a demonstration day on October 29th Marin demonstrated the prototype solutions from the innovation sprint in the offshore basin. During a participatory work session in the afternoon 80 experts with diverse expertise provided feedback on the solution prototype and mapped the way forward to a future with multi-use offshore farms.

This preliminary report provides an overview of all the raw results from the participatory workshop:

1. Stakeholder map2. Solution feedback3. The way forward4. Fail forward & one small next step

Analysis of the results and main conclusions will be shared by Marin in a final report.

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1. Stakeholder map

Description

In this exercise the participants gave input on what role their organisations play in the realisation of multi-use farms. The goal was to create an overview on what organisations play what role in the realisation of multi-use farms and how organisations can work together towards that goal. The result was a stakeholder map that is filled with input from all participants in this workshop.

Results

Investment & Tendering mostly sparked interest from governmental organisations regarding policy and permits. Knowledge institutes and industries wrote their ambition to form consortia to collect knowledge and knowhow. Engineering & Development is the most filled stakeholder category in this workshop. Industries and knowledge institutes see many possibilities for engineering and development of different aspects. Realisation is mostly filled with industry stakeholders. Operation & Maintenance a noticeable difference between industry stakeholders which will perform the O&M and the knowledge institutes who want to improve the monitoring. Demolition & Re-use is mostly filled with ideas for re-use of the offshore structures.

Investment & Tendering

Our organisation can play a role in by so thatGovernment before investment regulating new developments can mature

ministry of agriculture nature and food qualitypolicy/strategy EU-policy making, NS strategy 2030 Multi-use will be realised as soon as possible

Rijkswaterstaat policy/strategy permit requirements – discuss possibilities there are no surprises afterwards

Rijkswaterstaat policy/strategy

specifying requirements + other criteria concerning safety at sea, ecological conditions, spatial planning Multi-use is not a goal but a means to an end

RHDHV tenderingbringing in knowledge on project design, spatial planning costs, ecology

efficient and complete call for tenders or tenders can be realised

TNO tenderingadding large multi-disciplinary teams/knowhow

WU-MAE design

adding sea-ranching perspectives (>200x more seafood/protein value) without habitat damage

RHDHV tendering doing environmental assessmentsMulti-usage of the North Sea will grow in a sustainable way

RVO community of practice multi-use of north sea agenda 2030development connecting people, knowledge, subsidies, teams, financing, facilities

the development of ideas result into products ready to market

ENBRIDGE investment/development considering other users of same space north sea is used efficiently

I public consultation giving positive feedback new developments get pursuits as rapid

Baskalis investment and tendency 1) R&D support 2) execution of pilot projects first selection of viable conc3pts is promoted

TU Delft T=0een consortium mede-opzetten waarin afstudeerders fundamenteel onderzoek doen

technische achtergrond is dichtgetimmerd voor real-life onderzoek mogelijkis

WU-MAE designoptimisation of spatial planning and habitat enhancement for ecological functions

crucial lost habitats for key north sea species can be re-introduced to kick-start the return of these species (they need to fulfil this life-cycle connectivity)

Ministry of interior the lot ‘decisions’ making multi-use obligatory north sea is used efficiently

Bureau veritas investmentscertifying the proposed methodology of development and tenders compliance financing could be made easier

WUR investment and tendering investigating sea weed production potential policy can be made with well-informed arguments

Oceans of Energy Policy and regulationsproviding input in P&R disc. From a floating solar development perspective

this point of view is included for future tendering in offshore projects

Government??? before tendering requiring multi-use on offshore wind bids other can get financial and technical help

WUR_WMR financcing and tendering new monitoring and effect tool development

non invasive and climate robust design adaptations can be implemented by learning policy development

WUR WER WAR investment and tendency development of new tendering proceduresnature sea culture co-design is included in spatial planning

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WUR WMRremote monitoring ecology-ecoservices-production

Non-invasive tools are used for optimisation of nature-wild(?)-aqua production

TU Delft TPM investment and tendencyinvestigating and modelling market scenarios and societal reactions

policy can me influenced/developed to advance multi-use

Vuyk engineering investment and tendency

looking at foundations for example and find ways of multi-use before the boundaries are set future remains as flexible as possible

TNO tenderingoffering multi-disciplinary knowhow and network making better project proposals

WUR investment and tendencyinvestigating ecological impacts of offshore wind parks negative effects on ecosystem can be minimised

Deme investment and tendencysharing our experiments to track record into floating islands

development farming @ sea. We can help out finalising a tendering phase

WU-MAE pilots

studying added value, e.g. fish in-between floating structures and sea weed /mussels under floating panels added value can be validated and enhanced

Blue21 investment and tendency

providing knowledge and experience in developing technical guidelines from both urban and offshore perspectives for policy makers to refer to

floating development can be evaluated if they meet standards or codes of practice in order to operate safely offshore (for both human and environment)

TU Delft TPM investment and tendency

develop recommendations for tendency procedures to balance economic and ecological benefits

not only the economical picture decides if it is viable at the end or not

TNO structural reliability and structural dynamicsinitiation and tendering

conducting full fledged safety assessment in close corporation with others (e.g. wur marin …)

investors, society and authorities (incl class authorities) are convinced about safety of the concepts

Engineering developmentorganisation can play a role by so that

TU Delft 3mE (P&E)/TNW engineering and developmentdeveloping energy transformation from electricity to molecules

energy demand and supply get uncoupled and energy transport is possible by pipes or ships instead of cables

TNO engineering and development developing floating PV systems

Oceans of Energy engineering and developmentengineering of development of floating solar at sea

floating solar becomes a realistic and feasible option for renewable energy

Ghent University design, built, executioncalculating forces, predicting growth of aquaculture mooring gets safer and cheaper

Gusto MSC engineeringnaval architecture/offshore structure design/integration

fully integrated system able to survive in offshore environment

MacArtney.com engineeringsupport in cable/connectors to connect cameras/sensors in copper and fiber you know what's going on during operation

TNO developmentdeveloping storage and refining concepts of seaweed

large seaweed cultivation fields can be harvested/stored/refined

Sunway Flex (Solar@Sea) PV installation

WUR engineering and developmentinvestigating the ecological impact of offshore wind parks both short and long term

the negative impact will be minimised and mitigation can be used

WUR-WMR engineering and developmentmitigation of ecological risks strategies and tools future and current eco risks are mitigated

Bureau Veritas engineering and developmentdeveloping new rules/documentary notes certifying against these standards

acceptance by national or international authorities and insurances and others could be provided

Tennet engineering and developmentdiscussing functional requirements and boundaries from TSO perspective

future multi-use can be incorporated/taken into account early enough

Schuttevaer development and constructioninforming the maritime sector and shipping industry acceptance and understanding growth

TKI wind op zee engineering and developmentfacilitating and subsiding cooperation between public and private organisations innovation occurs at higher speed

TU Delft engineering and development experiments/numerical simulationsknow more about FSI, hydro elastic knowledge and other hydromechanics

waterstudio.nl development proposing concepts of possible living offshore full integration of work and living = efficiency

RHDHV engineering and developmentbringing knowledge on technical ecological aspects, marine spatial planning

the ideas that there are now can be developed to practical plans

MARIN engineering and development model testing and field measurements concept is proven and tools are validated

WUR, plant production systems engineering and developmentapplying concepts and knowledge gained on ...ble systems on seagriculture

we can develop efficient and smart seaweed production systems

TU Delft 3mE/MSE engineering and developmentdevelop sustainable materials for construction of floating solar parks commercially viable structures can be built

ENBRIDGE development allowing multi-use in OWF new projects show improvement of energy harvest

TU Delft students T=1further understanding the idea of multiuse amongst students

more knowledge can be created/generated for younger generations

TU Delft students T=1 organising a design challenge for students new creative ideas might be generated

ECN engineering and developmentexamining the requirements for PV in the open sea environment PV will survive and produce energy for many years

DOT engineering and developmentproviding a layout and infrastructure for a new wind farm it can be optimised for multiuse

U ghent engineering and development developing systems for seaweed growth

Damen Shipyards engineering and developmentdeveloping integrated concepts for offshore structures and ships overall lifecycle costs are minimised

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Government development

pointing out the need for an integrated approach: actual system + influence on environment/desired location determine costs and benefits pilots can be upscaled

WUR plant prod systems engineering and developmentresearching and developing cultivation systems and growing guides

seaweed can become a proper domesticated crop for production

WUR WMR WER WEMR engineering and developmentcodesign nature inclusive wind farms and spatial planning

the right ecosystem functions and uses are codeveloped at a north sea system basis

RVO implementationconnecting people and preserving government goals (nature, food and energy)

the implementation will be in balance with the environment, ecology and

TNO structural dynamics engineering and developmentmaterial characterisation (strength stiffness damming etc.) structural integrity is ensured

TU Delft EWI engineering and developmentdevelopment of solar panel modules for optimised efficiency at se commercial viability becomes a close reality

TU Delft 3mE/MRM engineering and developmentfundamental research on FSI and relevant physics

engineering model can be developed based on these phenomena

Vuyk engineering engineering and development providing engineering services most efficient methods can be developed

Boskalis engfineering and developmentcontracting work and make engineering knowledge available engineered concept can be mature

DEME engineering and developmentlooking into the possible methods for transport installations optimised the T&I costs

MacArtney.com engineering and developmentusing what sort of cable is best, copper or fibber

the best commercial or robust cable connects type is chosen

Blue21 engineering and development

introducing sustainable development and system integration for floating city offshore (water, food energy and settlement)

new space that is liveable, efficient, environmentally friendly can be created offshore properly with smart designs

WUR developmentmonitoring seaweed growth on various constructions selection of the best one for cultivation

TU Delft MTT students engineering and development

developing computational methods for prediction of structural/hydrodynamic (stochastic) behaviour in harsh conditions

engineers can use them for making safe, reliable, …, designs

TU Delft students writing down comments safe the planet

Exploratief design

but… I would like to point out that for offshore PV one needs to haver a sustainable solution on electrical cables to take idea further

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Realisation

Our organisation Can play a role in by so that

RHDHV realisationcoordinating environmental procedures setting up mentioning and evolution program

We can learn form and help translate permit the project requirements in practical measures

U gent realisation effectively providing preliminary???

MacArtruey.om realisationmaking sensors and measuring equipment offshore prove

you can measure the behaviour of the platform during time

Bureau veritas realisationinspecting fabrication against approved drawings and documents

acceptance by national and international authorities and others coub e provided

oceans of energy realisation providing and floating solar design floating solar project at sea can be realised

Vuyk engineering relaistionproviding smart solutions for vessels and systems and sea fastening realisation can be efficient and safe

Cominications gemeente den haag any fasestakeholder identification plus management surrounding and interaction the whole process runs smoother

Boskalis relaistion contracting work, execution work gets executed efficiently

enbridge realisation/buil allowing start ups to test new developments full-scale test conditions

MacArtruey.om realisation delivery subsea connectors and cablesall data/power is robust and simple, goes from a to b

DOT realisationincorporating multiuse in our layout and construction

multiuse is incorporated in the windfarm rather than being added

ECN part of tno/solar energy Realisationmonitoring energy production + developing and extending yield models

we can design systems and know how much energy we will harvest

??? Surnny Flex making pv swimming modules with thin film energy can be produced

WU MAE relaisationstudying changes in various monecluar techniques presence of marine organisms predicted effects can be validated

TU Delft students realisation

investigation of series production of concepts as well as making calculations on installations offshore

optimal production and safe installation both efficiently

TNO Realisation measuring monitoringactual specs are met in close assistance to class and authorities

Damen shipyards realisation delivering ships for installation installation can be exci…

WUR realstudying cumulative effects multy use and wind sector next stage planning can learn form earlier choices

??? Surnny Flex 30 year niet echt leesbaar

Marin realisationconcept test for installation monitoring of installation so the realisation without failure

Students realisation typing out of minutes so that an excellent report can be made

Operations & maintenance


WU MAE operationstudying presence of mobile and sessile organisms you know the ecological effects

exploratief operations to maintaincemaking use of best practices from the oil and gas industry

offshore wind energy ? Be a a safe as possible operations ???

RWS realisation or development prevent special conflictslocation cotaction location! Clos to shore little space

Marin operationimprovement maintenance trips and monitoring operation

efficient maintenance is achieved for operation is efficient

Deme operations and maintenance

using our equipment of installation we have alto a track record on maintenance that we can use if maintance???

Damen shipyards operations and maintencance delivering costume shipsO&M can be executed at high efficiency and lowest cost possible

Vuyk engineering operating and maintenanceproviding smart solutions for vessels and systems operating and maintenance can be cost efficient

WU MAE operation developing/testing: antifouling and ???fouling can be reduced eg flut abster or wanted organism can be attracted

WUR maintenance monitoring seaweed growth you get an optimal production

oceans of energy operations and managementproviding real time data offshore floating solar

a better understanding of offshore influences is obtained

automotive tno structural dynamics operationmonitoring through instrumentation and data interpretation observation of actual performance

Wageninge UR plantprocution systems operations and maintencancehelping adapt seaweed cultivation plants as knowledge on the system increases

seaweed proception can be increased through the years

DOT O&Mcombination our maintenance activities with harvesting and exchange operation costs can be limited

Bureau veritas operation and maintenace certifying and class maintenanceinsurance could be maintained national and international compliance could be maintained

TU Delft students maintenancepredicting damage due to either fatigue or limiting load cases

maintenance can be planned in advance and we know how damage structures behave

Embrige operations and maint using own equipment for other users equipment has high utilisation

enbridge demolition/decom selling vundations to next user longer life time of assets/more economical

mac actury com operation supplying subsea cable and connectionswhen the fars will be moved simple disconnection is possible

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Demolition and reuse


Vuyk engineering demolition providing engineering/procedures the demolition can fee safe and efficient

wur-winr ??? reuseearly stage habitat development and special planning I&T can consider future ecosystem needs

RHDHV demolition and reuse

by doing a cost benefit analysis and also taking in account the ecological cost and benefits The impact on the emission are as low as possible

Vuyk engineering reuse providing creative solutionsthe environment developed during operations can remain intact and provide further enhancements

? decom-reuseassessment of local and system effects on ecosystem services

new deconditioning and reuse options are considered

TU Delft MT sutdentreuse taking into account reuse in a preliminary design phase reuse is possible

WU MAE reuse Eco based habitat optimisation of structuresbiodiversity and seafood praocution profit and removal costs are saved

WU MAE demolition assessing the lost value of removing habitat so that no biodiversity/seafood or € on wasted by removing valuable reefs

blue21 demolition and reuseproviding creative and sustainable solutions to utilise existing infrastructure

it can give a second life and without disturbing the existing ecology underneath

Boskalis decomistion and reuse contracting work redevelopment can be efficient: cost/time/safety

Bureau versitas demoition/reuse certifyingaccepted by national or international authorities and others

TU Delft students research recycling old wind farm supports overall cost can probably be reduced

marin workshop demolition using the term redevelopment we focus on sustainable use of sea areas

2. Solution feedback

DescriptionIn this exercise the participants provided feedback on the prototype solution. The goal was to get as many viable feedback in short time as possible to learn from the available expertise what works, what should be changed and what we need to know more about. The intended results were feedback on the solution from three different perspectives:• Structural design• Efficiency of layout• Ecological impact

ResultsA lot of ideas are posted, mostly in the ‘change’ and ‘need more knowhow of’ category, but alsosome ‘keep’. The most important will be defined and described in the next chapter. What follows here is an overview of all results related to feedback on structural design, efficiency of layout and ecological impact.

STRUCTURAL DESIGN

I WOULD ACTION PART SO THAT RESULT

I would change add floating wind turbines, mussel growth so that more multi-use

I would change structure of monopiles so thatyou add hard substrate to the environment to grow marine life

I would change WTF structure to integrate mooring points above water so that.-maintenance/ inspection is easy, -xtra moorings are avoided

I would change use solar power to generate light to power fish farms so that combine solar and fish farming

I would change aquaculture modules as individual (floating) units so that exchange/harvesting can or is fascilitated in-shore

I would changemooring allows the solar platform to rotate considerably in quartering seas so that risk is platforms colliding

I would change partially submerged edges on the floating panel so that the wind does not capture structure and flip

I would change add wave energy converters between the arrays so thatadditional energy from damping the wavefield is obtained

I would change submerged option so that effect wave action is reduced

I would changethe surface to include electrical induced fabric to produce energy from wave energy so that wave energy is transferred to electricity

I would changemooring system of the unit to an autonomous grid of anchor lines so that mooring can be quicker and more reliable

I would changeconstructions foundations windturbines for 100 year lifetime. So only turbines need to be updated or renewed every 25 years so that

I would change submerse bouys underwater to reduce forces so that forces are reduced

I would change

the desing of wind mills (total inovation needed (google delopments) with kites suported by baloons and no reduction gears (3000 RPM propellor) so that the costs are widely reduced

I would change the development organisation (group with multiple disciplines) so that all design issues are adressed securely

I would change the design PV|PV|seaweed so thatsolar panels are vertical to prevent eco impact and allow use of underwater seaweed

I would changethe organization risk based development are neccesseray. BVNI525 so that to avoid wrong solutions

I would keep the platform concept seems alright so that low forces int-ext.

I would keep holes in the structure so that the surface tension is not to high

I would keepthe concept of light weight simple structure to support light weigh payload so that something become cost efficient

I would keep continious structure rather than afticulated struced so that coupling forces are avoided

I would need more know-how on shape PV platform round/square so that

I would need more know-how on most efficient height to grow seaweed so that can be harvested in shortest time

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EFFICIENCY OF LAYOUT

I would need more know-how oneffect on water on top of construction + how to prevent to much water on top so that stay efficient

I would need more know-how on thickness floating structure so that maybe can be designed like a leaf with nerves

I would need more know-how on mooring on the monopiles so that do not need extra anchors

I would need more know-how on plastic soup around solar/seaweed farms so that this issue can be dealt with

I would need more know-how on internal forces (coupling?) so that full scale structure requirements can be derived

I would need more know-how onopportunities for tourism/diving/recreation activities @multi-use farm so that more attention and multi-use

I would need more know-how on the platform & ice in cold winters so that what happens?

I would need more know-how on fatigue properties of the flexible mat so that sufficient lifetime is achieved

I would need more know-how on scaling a flexible struture so that we know what materials we need to use

I would need more know-how on seabed vs strucure anchorage so that installation anhors reduce; fatigue life of HP lines

I would need more know-how onte matirials of the PV modules and floating matts to understand how much tension/buoyancy is needed for different configs. so that it stays afloat and in place

I would need more know-how on life-cycle of solar panels so that maintance effects can be better estimated

I would need more know-how on reducing peak loads due to snap loading of the mooring system so that mooring can be optimised

I would need more know-how on fatigue of the PV so that we know more about the fatigue life time in general

I would need more know-how on Solar panels robustness mechanical/electrical so that

I would need more know-how on the dmaping effect of seaweeed on the waves so that the solar panel design can be fitted accordingly

I would need more know-how onon the behoviour of the seaweed below the water surface (do the lines get tangled?) so that

seaweed installation can function properly + the seaweed can be harverstable

I would need more know-how on the structural risk of accidents affecting the windmills so that we make sure it's worth it

I would need more know-how on interactions of the different floating structrers so that the don't colide

I would need more know-how on effets of using nature inspired design so thatwe can probably learn from natures developments => water lilly

I would need more know-how on

Material selection based on axial and bending stiffness. Consequently the fatigue lifetime and the most important failure modes. so that damage prevention, costs, weight, wrinkling behaviour.

I would need more know-how on mooring point: point load needs to transfer global traction so thatwe know where stress hotspots are localized in order design local structural details

I would need more know-how on scale effects of the materials on the current state so that scale up will lead to the expected result

I would need more know-how on FSI on floating solar panels so that this knowledge can be used in the design

I would need more know-how on sea weeds optimization height in water etc. so that mooi.


I would change layout so that solar fields are downstream of offshore wind fields

I would changeintergrate structure -design and foundation -maintanance and conditions monitoring so that

I would changethe lines on which the seaweed grows into single lines instead of net structure so that easier to harvest

I would changemulti-use wind parks in circles around former production platfroms so that

existing structures can be used for energy storage and transport

I would change develop cleaning proceudre for solar panels so that

I would changecurrent layout where solar panels completely block sea surface so that

less risk of eco-impact & more possibility for real multi-use

I would change the oriatation of solar panels with respect to sea so that efficiency is improved

I would changeinstead of between 4 poles, build around pole and use pole for mooring (make ship lane for turbine) so that it improves mooring

I would changesimple mats to more elaborate setup with ballast water at least around the circumference so that lifting up by wind is prevented

I would change in the long run aim to moor the system to the monopiles so that there are less anchor points needed on the seabed

I would changethe development organization with several houurs/days work shops to optimize the layout. Cannot be assessed so quickly so that

optimized solutions are obtained and reviewed (including risk management techniques see BV NI 525)

I would changeto more organic spatial layouts, because the upcoming windfarm lots are polygonic so that we can adapt to this new reality

I would changealso to reverse osmosis, also add tidal? Why not? Why limit to seaweed and solar? so that

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I would changeposition of units to the units to the outer perimiter of wind farm so that the units are better accessible for harvesting

I would change the exact unit sizes of the solar panels/seaweed so that the layout is more flexible and better transportable

I would change floating seaweed systems vs submerged systems so that forces on the system might be reduced

I would change how about vertical solar panels and seaweed right below so that

I would change look at different ways to interact with the ecological system so thatnature provides us with what we need at much lower costs

I would keep looking at seaweed and solar panels so thatproblems with one of them can be solved with the other one

I would keep flexible PV modules so that flexible floating is possible

I would keep different types and set-ups of solar panels so that determine optimum solar panel structure

I would keep module setup so thatflexible installation as well as OHM (seccond letter unreadable)

I would keep soft mooring so that forces stay low

I would keep lanes for trafic/maintenance so that accessability

I would keep access for OWF & multi-use so that maintance is efficient

I would keep simplicity of the design so that

I would need more know-how on shape of the floating solar panels so thatthey can be better placed in waves from different directions

I would need more know-how onhow to moor floating structures close to submerged power lines from wind turbines so that OWF owners are happy with added risk

I would need more know-how onmooring in deep sea systems to keep the structure stay at the right positions rather than go with waves or currents so that dynamic position system??

I would need more know-how onpentagone? Hexagone? What organisao with the wind turbines & other elements? And acces so that better efficiency

I would need more know-how on sea salt contimination of solar panels so that E-production is not affected too much

I would need more know-how onwhat happens w seaweed & platform in case of oil spills or collision with floating objects so that damage?

I would need more know-how onboundary conditions of each function: 1. distance, 2. products so that layout can be designed accordingly

I would need more know-how on green water on top of solar panels so thatlittle water would help to clean the water but too much might generate marine growth on top of panel

I would need more know-how on how to use the monopiles for mooring system so that you do not need additive anchors

I would need more know-how on how to efficiently harvest sea-weed? so that

I would need more know-how onhow each maintenance crew (wind/solar/seaweed) will move around in the area as a first stap so that the layout can be practical

I would need more know-how on effects of turbine-shadows on productivity so that know how much energy can be produced

I would need more know-how on viability of seaweed growing and harvesting so that one can access functional viability

I would need more know-how on how to install this floating solar farm so that

I would need more know-how on dynamic power cable durability @ shallow water so that impart part has high availability

I would need more know-how on space required to harvest seaweed so that total area seaweed field >> effective field

I would need more know-how on the specific location so that can have best location for sunlight, waves, tide etc.


how to position the solar panels to get enough energy at the right time; how to deal with peaks from solar energy? Can panels be connected to grid of windfarm? so that

I would need more know-how on transport of energy so that this beatifull concept is efficient from source to sink

I would need more know-how on how does solar farm effect sea life so that less damage is done

I would need more know-how on handeling of seaweed nets so that optimize size and number of handlings

I would need more know-how on harvesting/maintenance so that we must think about this

I would need more know-how onmaintenance needs so that maintenance routes be assessed. How to repair a mooring how repair a solar panel? Etc so that in service lif is useful

I would need more know-how on maintenance can be preformed on structure so that cost can be optimized

I would need more know-how on power connection of solar panels so that optimize size

I would need more know-how on mooring forces and their impact on the monopiles so thatwindpark owners can be convinced that no damage to monopiles is possible

I would need more know-how onenergy needed for production and maintance per energy harvested (efficiency) so that there is an average gain

I would need more know-how onshape of system nature has not rectangularity its always curved (near boundaries) so that we don't miss the obivious

I would need more know-how on fouling and matierials so thatoptimal ecological maximalization is achieved - minimal effect on system

I would need more know-how on connection of the PV to grid so that influence of powercable is not overlooked

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ECOLOGICAL IMPACT


I would need more know-how on crab/shellfish world so that another possible viable use of space is considered

I would change Early stage design for recycling so that in twenty years they don't have troubles in decomission

I would change leave enough room between the panes so that birds can forage

I would change model of "seaweed farm" so that hydrodynamic behaviour is scaled & represented properly

I would change how much knowledge does public need to have? so that how does it affect design project

I would change include the public in re-evaluation of the project so that


impact of solar panels on fish/sea environment; same with seaweeds; same with impacts of mooringlines, windmill foundations; so called impact study so that risks are minimized on the sea environment

I would need more know-how onwhat impact do fish + shells have on productive growth of seaweed so that we can calculate this

I would need more know-how onthe material of the mooring lines, these could possible lead to entanglement of marine animals so that entanglement is prevented

I would need more know-how onBathymetrical changes due to damping of surface waves and current and waves so that

we know how sediments change and hence how the animals can settle down there

I would keepthe maintenance + crew transfers needed inside the OWF and transfer of crew transfer vessels into account so that optimize the best location for installation

I would keep shipping lanes so thatease of acces = guaranteed; maintenance time (emissions) are minimized

I would change to incorporate fish farms/shelters in layout so that area is increased in biodiversity

I would changefeed the seaweed farm with un-/partialy treated sewage from land so that sufficient food is available for the weeds

I would need more know-how on effect of high concentration of seaweed in small area so thatone can assess the risk of (increased) marine growth on PV structure

I would need more know-how on effects of light blockage on PV installation so that one can assess effect on sea life underneath

I would need more know-how on local ecological data so thatsolutions for ecological restoration or regeneration could fit-purpose

I would need more know-how onhaving the solor panels submerged and getting lower temperature, is still efficient to generate energy from them? so that

I would need more know-how onwhat effect (positive) exists when alternating sea-weed and fishery farms so that more? Nutritiënts are available for both

I would need more know-how on diffusion of nutriant etc pollutant in wind form so that anticipate problem polution of sea etc.

I would need more know-how onhow the solar panel platform located on the water surface affect the ecosystem navigation line? so that find a good way to apply it in deep ocean

I would need more know-how on what energy "food" will seaweed pull form the sea so that you will damage general sea life??

I would need more know-how on how less light will be blocked so thatprimary production among other things won't be impacted to much (See through panels)

I would need more know-how on the great-scale effects of windmills and solar panels so that the ecology won't be jeopordized

I would need more know-how on how much food do we need out of the sea (NOT FISH) so that we don't claim to much space for ocean farm land

I would need more know-how on influcnce of cooler sea water on current under pv panels so that direction of bigger streams does/doesn't change


how have indigenous communities (in e.g. south east asia) optimized sea weed production? How do they keep it sustainable? so that use local/existing knowledge for new concepts

I would need more know-how on different kinds of sea weed so that find out which is most efficient

I would need more know-how on the nutrient uptake of a seaweedfarm so thatwe are sure that not too much nutrients will be taken out of the sea

I would need more know-how onthe impact or interaction each module (wind, solar, seaweed) has on each other so that the most optimal combination can be discovered

I would keep sea weed & mussel aquaculture (can interact?) so that addition seafood is produced

I would keep the desing of seaweed on flexible lines so that plantlings can be planted directly on ropes

I would keep modular approach, combined business cases so that flexibility in design and max. economic yields obtained

I would keep interchangeble untis with solar panels or seaweed so that production can be optimized per ( feasch? ONLEESBAAR)

I would KEEP large openings so fish do not get entangled so that fish do not get entangled

I would change acces for fishery boats into OWF so that fishery is still possible in the future

I would change fresshwater into saltwater so that small seaweed plants can be grown

I would change the garlands as seaweed for something more rubbery/organic so that the density/weight and shape are more line seaweed

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I would changethe organization to a multi-discipline group (including ecological specialists) so that risks are minimized to the environment

I would need more know-how on the influence of motions on the amount of energy produced so that we know wheter it's worthwile anyway

I would need more know-how on compare ocean use with land use by LCA so that best cradle to grave option can be developed

I would need more know-how on the influence of chosen set-up on the seaweed production so that production can be maximized

I would need more know-how on the influence of extra shadow invoked by the PV so that possible positive/negative benefits can be discovered

I would need more know-how onthe nutrient input needed, as well as potential pollution from seaweed cultivation so that sufficient quantities of seaweed can be produced

I would need more know-how on biodiversity development under PV structures so that understand impact and forces (biomass weight)

I would need more know-how onsound/vibration on mammals - effects attraction -fish/mammals so that

I would need more know-how on the mooring so that bottom damage can be minimized

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3. The way forward

DescriptionIn this exercise the participants mapped the way forward to multi-use off farms, building on top of the results from the previous exercise. The goal was to get the most important and urgent steps visible. The final result was a solution maturity vs impact quadrant

Result

The most important themes identified are the following:- Include more species in the growing concept- More knowledge on the ecological impact- Shading of the turbines on the solar panels- Shading of the solar panels on the sea life- Influence of water and fouling on the solar panels- Options for automatic monitoring- Motivations for operators to implement multi-use- Involve tourism, public and fisheries- Keep the flexible structures- Knowhow on the influence of the structure on the environment and vice versa- Improve seaweed modelling- Nutrients sources required for seaweed growth

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I II

III IV

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Team BlueQuadrant area Category I WOULD ACTION PART SO THAT RESULT

1 Structural design I would

Need more knowhow on

The behaviour of the solar panels underwater & electric connections so that It works despite being submerged in the water

1 Structural design I would change

The way buoys are modelled (preferably submerged) so that Drag due to current is simulated in a better way

1 Structural design I would Change

The way seaweed is modelled (in practice it’s longer, denser) (seaweed floats!) so that

drag due to current (more surface area) is simulated in a better way

1 Environmental impact I would Change

Include also other species suitable for aquaculture (mussels, etc.) so that Different setups can be tested

1Environmental impact I would


How does marine life react? Seals on top, seagulls sit on it, do whales cross the area, algae on solar panel reduce efficiency, geese find a place for rest? so that


Need more knowhow on How seals & birds are kept of the PV panels so that Efficiency does not go down by animals present


Need more knowhow on Wave structure interaction so that Wave energy extraction can be assessed (wave carpet)



Wave-solar platform interaction flow details around the structure and the structure react when meets different types of sea waves so that

Put possibilities in offshore floating structure applications (especially in deep seas)

2 Environmental impact I would

Need more knowhow on the impact of a seaweed farm as a monoculture so that No problems will occur after scaling up

2 Efficiency of layout I would


From which latitudes is solar energy more efficient then wind turbines and v.v. on the North Sea so that

Plans for multi-use food and energy parks can be adapted to that. Same goes for seaweed.

3 Environmental impact I would

Need more knowhow on Environmental impact assessment req’s so that All queries/open items are covered.

Team GreenQuadrant area Category I WOULD ACTION PART SO THAT RESULT

1 Efficiency of layout I wouldNeed more knowhow on

The shading of the PV modules by the wind turbines so that The energy yield can be optimised



Automated monitoring production seaweed quality/ biomass / biodiversity so that Optimal production conditions

1 I wouldNeed more knowhow on

How owner/operatorcan be convinced to cooperate on multi-use so that Multi-use will be feasible

1 I would changeEconomic incentive for windpark owner: “rent”/percentage of profit goes to owner so that Multi-use becomes attractive

1 Efficiency of layout I would change Tourism so that A place to sail to angling swimming diving


Need more knowhow on Which creatures in the water eat seaweed so that Enough will be left over :)

1 Efficiency of layout I would changePattern in the OWP: make cross lanes for fishery& sailing boats so that

Fishery stays & sailing boats can pass OWP in various directions

2 I would change

Ask the opinion of the public/including them in large projects at sea / especially childresn/young people so that

2 I would change Think of a role for fishing industry so that



how the currently existing ecosystem is affected by the “platforms” so that

Negative environmental impact can be avoided, potential positive impact can be enhanced



which species to combine, or combinations of fish and seaweed cultivation so that The design is efficient


Need more knowhow on The nutrient depletion of the seaweed so that The north Sea will remain rich in nutrients


Need more knowhow on Nutrient streams at sea so that

Good multi tropic setups of seaweeds / mussels / eventually fish can be established


Need more knowhow on Are there ample nutrients? so that

2 Structural design I would Flexibility structural so that

2 Structural design I would change flexibility of solar panels so that Optimum stiffness/flexibility ratio is known

2 Structural design I would Consider concept of survival mode so that In heavy seas

2 Structural design I would Keep the flexible setup of the floating solar panels so that More forces are reduced

2 Structural design I would keepthe structures as flexible & lightweight & simple as possible so that Forces and costs are kept minimal

2 Structural design I wouldNeed more knowhow on Behavior of floating flexible solar panels so that They will last at sea

3 Efficiency of layout I would changeLayout of floating solar panels to avoid sea animals and birds climbing on them (seagulls) so that They remain clear

3Environmental impact I would Surface treatment top/bottom so that Fouling / birddtoppings



Salt deposition on the solar panels with little over toppings so that

Quadrant area

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Need more knowhow on The impact of salt water on the solar panels so that

The design could be optimised taking into account efficiency solar panel



Influence of migrating birds (and their feces) on solar panel coverage and how well can get rid of the birds so that

4 Efficiency of layout I wouldNeed more knowhow on

Impact of shading of large artificial islands / what about seabed shading? so that



how effective the solar panels are if water is on the surface of the mats so that

the structure functions properly for what it is designed to do


the design of solar panels needs to be regularly washed with fresh water to maintain their efficiency so that Their design should be proven

4 Structural design I wouldNeed more knowhow on

Electrical cable strength over time (for the PV) panels so that

It can be ruled out that cable fatigue in real life is not an issue



The effect of the solar panels on the heat absorption of the sea so that

We know till what extent the water will heat/ cool


need more knowhow on

The consequences of large black surfaces in the rise of temperature in general so that

We don’t become contra productive regarding global warming

Category I WOULD ACTION PART SO THAT RESULTQuadrant area

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4. Fail forward & one small next step

DescriptionIn this exercise we concluded with participants indicating what the thing is we need to do first before anything else to achieve multi-use offshore farms. Additionally, participants described one small step toward a multi-use offshore farm future.

Results

Many participants showed their interest in continuing research in pilots and consortia so we will be working on next steps.

the one thing that we need to do before doing anything else

after this workshop I

herewith commit to advance the realisation of multiuse offshore farms by

and Im looking for collaboration on feel free to contact me at

collaborate more, map who is active in this fieldlooking into the poduction process of seaweeds cultivation process [email protected]

keep working together audreysharing my knowledge on ecological impacts doing a full scale pilot on the nos [email protected]

know more on the ecological impact of large scale seaweed farming

saskia mulder

bringing in knowledge on ecological impact spacial planning [email protected]

Start Pilot Jack Sp??? pitchin for boskalis fleet support excecuting a pilot [email protected]

establish concept of multi-use structures according to real condition zhan min

numerical simulations and experiments floating structures [email protected]

set up a group of interested parties with specialities to support this idea

rober van de wiel developing floating offshore solar biofuleing and maring growth

[email protected] 31657674210

incorporate all stakeholders jack spez freeing r&D developmentdesinging and installation techniques [email protected]

combining forces and set up an active consortium

Hilde Vaessen

Woring on increasing seaeed procutivitiy seaweed procution and ecology [email protected]

Build proves of concept to receive funding to realise the ideas Maarten Working at oceans of energy selling floating solar

[email protected]

Make sure that the individual parts soud & viable themselves Mark Things about technical concepts [email protected]

tenjoy this nice day at marin, thank you ErwinShare idea's about underwater calbes and conectors eclector conections under water

erwinvanderschee [email protected]

keep improving the modelling of multiuse wind parks Lisanne

investigation the potential of farming/aquqculture ecology [email protected]

Get the wind park operators involved keep in toch with the partites field test [email protected]

source funding for such R&DConsidering other uses oWF [email protected]

Get wind park owners on board Anna Carr discussing possiblities internally pv aspects [email protected]

involve fisheries industry fishermen lex varieous items [email protected]

get financing doby studying motinos an loads on structures this [email protected]

marnix marnix discussing and combining research multiuse [email protected]

Keep up to date with all relevant, broad research Hugo developing isogeometric FSI modelsloading and response but also everything else [email protected]

build a consortium, possibly a non-profit organisation where individuals and government organisations and contractors could participate at same level to distribute knowledge world wide and avoid freezing by patents J P Sauvage replying to BV management certification/consultancy

[email protected]

research a way to effectively predict dynamic behaviour of flexible structures Luc being an active part in the discussion [email protected]

get all stakeholders using the sea involved and take that we can care of our precious resources Annemarie getting my company involve

any engineering subject that comes up [email protected]

create awareness how little space is left on the north sea bert de groot spreading the word of its necessity future innovations [email protected]

keep an open mind on possible synergies Simon doing research on agreed topic a thesis [email protected]

consider the impact and optimise designs of multi-use wind farms gabrielle facilitating public-private partnerships offshore wind innovation [email protected]

create mutual benefits for all stakeholders Niekventilating my ideas and incorporating them design and realisation [email protected]

publish and inform general public to ensure future public support Jack Span adding to publications [email protected] the interaction between environment and structures as well as structures amongst each other S. Schreier

investigating FSI of flexible lightweight structures floating solar projects [email protected]

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mailto:[email protected]



























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