Energy Systems and Technologies for the Coming Century ...

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3.5 Geological potential in EuropeFig. 5 gives an overview of the – very irregular – distribution of salt formations inEurope. The symbols for existing and planned salt cavern projects indicate where formationsare present with potential suitability for the construction of future energy storages.Fig. 5: Salt formation and cavern projects in EuropeThe map is dominated by the large Zechstein deposits (blue colour) which extend fromthe east coast of England, across the Netherlands, Germany and Denmark, all the way toPoland. This shows that in these countries, and in Central Europe in particular, veryfavourable conditions exist for the construction of additional storage caverns. Thepotential in England, however, is restricted to natural gas and hydrogen caverns becausethe deposits are too deep for the construction of CAES caverns.The other salt deposits younger than the Zechstein have less favourable properties: theyare frequently thinner often allowing only smaller cavern volumes, and often have highproportions of insoluble minerals, which means that there are also additional losses in netstorage volume. The deposits on the west coast of England are almost completely exploitedby natural gas storage caverns – the additional potential is largely only availableoffshore in the Irish Sea. In France, the salt deposits in question lie at the eastern and thesouthern edge of the country and are mostly very deep, which will limit construction ofCAES caverns. Spain has no gas storage caverns to date even though there is an enormousdemand for capacity. This clearly indicates the limited suitability of the salt depositsin this country. Portugal has potential – albeit limited – and one large natural gas storagefacility is currently being constructed. According to the information available today,Italy basically has no suitable deposits.In conclusion, the potential for the construction of energy storages in salt formations isvery unevenly distributed and limited. There is a great need to look at the potential ingreater detail because otherwise this may give rise to restrictions in the expansion ofregenerative energies in Europe; this topic has not attracted a great deal of attention todate.Risø International Energy Conference 2011 Proceedings Page 414
4 SummaryThe transition from fossil and nuclear fuels to regenerative energy sources goes hand-inhandwith a decrease in the importance of the previously dominant role played byconventional energy storage in the form of for example natural gas and crude oil caverns,characterized by the very high volumetric energy storage density. This transition iscoupled to an increase in the demand for large-scale energy storages, particularly forfluctuating wind power as well as PV energy.During the transition period, energy storage will primarily be required to make balanceenergy available to compensate for divergences in wind power forecasts. Possibleoptions here are pumped hydro storage and CAES power plants, although they aredependent on local topography or geology, and public acceptance.If the proportion of renewable energies then dominates the energy mix, large volumes ofexcess wind energy will be generated over longer periods of time which can no longer bestored in pumped hydro and CAES plants for technical and economic reasons. Thisscenario is behind the current considerations in Germany of converting the excess energyinto hydrogen and using this hydrogen mainly for the chemical industry, for poweringfuture fuel cell vehicles, and for replacement of natural gas by green hydrogen.An energy economy based purely on regenerative energy sources will have a very highdemand for energy storages, mainly to compensate for the seasonal fluctuations in powergeneration. Even a rough estimate of the storage capacities involved show that thisscenario could only be realised by constructing a enormous number of hydrogen storagesin underground geological formations, which then leads to the next question of whetherthere is adequate geological potential to satisfy this demand. A solution might be tomaintain a certain natural gas reserve – even in an - almost complete renewable energybased world.Risø International Energy Conference 2011 Proceedings Page 415
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Energy Systems and Technologies for
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ContentsSessions overview 1Programm
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sessions overview08:00-09:00Coffee
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11:00 - 12:30 session 6A - Bioenerg
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ContactSustainable Energy, Technica
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Penetration of new energy technolog
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how decisions are made and by whom
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(9) is the logaritimic expansion of
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(16)we may finally write Eq(14) in
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Table 1: Fast track cases for new r
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Peterka V. Macrodynamics of technol
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Growth in clean and reliable energy
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Conclusion - an ambitious vision an
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"Spurring investments in renewable
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Integrating climate change adaptati
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transport, and finance. Energy prov
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northern South America, the Caribbe
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Table 1: Energy system adaptation s
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More generally, a number of no- or
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6 ReferencesADB, 2005. Climate proo
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Sailor, D.J., Smith, M., Hart, M.,
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Factors affecting stakeholder perce
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Another study conducted in Japan wa
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4 The effect of information on stak
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Furthermore, communication to stake
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Shackley S, McLachlan C, Gough C (2
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Figure 1: Potential CO 2 storage si
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The Upper Jurassic - Lower Cretaceo
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The majority of the individual stru
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Development. Project no. ENK6-CT-19
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Section 5 summarises the key issue
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Table 1. Efficiencies for new large
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In addition, district heating syste
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6.4 Model results from EFDA-TIMESIn
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Maisonnier, D., et al. (2007), Powe
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1Efficiency and effectiveness of pr
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3Stromerzeugung [TWh/a]250200150100
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54 Country-specific Lessons learned
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7100%90%80%quota fullfilment (%)70%
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[5] Haas R., et al: Efficiency and
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The development and diffusion of re
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a. Offshore wind in DenmarkDenmark
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applicants are invited to submit a
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nies that provide upstream and down
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for both technology users and produ
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Trade Disputes over Renewable Energ
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treatment to imported renewable ene
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In Canada, the federal government i
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grid access, subsidies and land off
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In 2010, China’s total wind insta
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Source: Renewables 2010 Global Stat
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Source: REN 21, Renewables 2010 Glo
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Source: adapted from REN21, 2010It
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their precise scope and nature diff
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60 daysBy 2 nd DSBmeetingConsultati
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discriminatory manner on domestic a
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the European Union, the North Ameri
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ended. China lost this case because
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As most countries in the world are
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Session 3A - Energy SystemsRisø In
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1 IntroductionWith the introduction
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occur. This is an undesirably burea
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This curve could be used as a new t
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ut for the total consumption, and i
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This gives the LBR an opportunity t
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concludes that the subsurface conta
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to constrain the evaluation. In add
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Fig. 2 SW-NE trending seismic profi
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Fig. 5. Petrophysical evaluation of
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ConclusionsThe Danish subsurface co
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Performance of Space Heating in aMo
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[5],[10],[11],[16],[18],[20],[26].
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2/3 Sun1 Coal1/3 ElPower plantHP1 H
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25002000Surplus(min(wind,prod-cons)
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160CO 2 emission per unit heat prod
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The calculations have been based on
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Session 3B - smart gridsRisø Inter
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2 Myopic Investments2.1 The Balmore
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Moreover, this model is formulated
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Reducing Electricity Demand Peaks b
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3 Event Driven Scheduling Algorithm
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5 Mapping Teletraffic Theory to Ene
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6.2 Results and Performance Metrics
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Energy Efficient Refrigeration and
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Virtual Power PlantAggregatorSuperm
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C p,rC p,fT rT fW cφ sT a(UA) raHe
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Total PowerP.G. #1P.G. #2C.R. #1201
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the availability payment.Simulation
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The constraint in Eq. (16) has the
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The FlexControl concept - a vision,
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can react on requests for power reg
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3 ControlThe concept is based solel
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one hour to the next - correspondin
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4 ProtectionThe protection of the p
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Session 4 - Efficiency Improvements
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the product portfolio point of view
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Figure 4: Principle flow sheet of t
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process information needed are seld
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AIRFINE®(Reference)MEROS®Ca(OH)2M
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4 Conclusion & DiscussionThe Eco-Ca
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1 Energy policy and EU directivesTh
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iomass CHP, heat pumps, electric bo
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Fig. 1: How to supply a growing hea
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Session 5A - Wind Energy IRisø Int
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The average cumulative growth rate
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turbines is expected to create a st
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O&MGridWindturbineSubstructureFigur
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Another idea is to harvest energy f
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9. Shimon Awerbuch, Determining the
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engaged in wind energy assessment,
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treated in such a way to make them
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Figure 5: Map showing the estimated
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Figure 9: The annual mean power den
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mix is required. For example diurna
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Session 5B - Wind Energy IIRisø In
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TABLE ISOME OF THE WIND TURBINE MAN
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China, has prompted all parties, in
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to the high shaft speed. Furthermor
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Superconductors must be kept cold b
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an annual increase in demand of 6%,
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Improved High Temperature Supercond
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our study to a single set of deposi
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3.2 Yttrium-enriched YBCO thin film
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Fig. 5. AC-susceptibility dependenc
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The j C (B) dependence at 50 K for
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Session 6A - Bioenergy IRisø Inter
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The European politicians are faced
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The fast growing demand for biomass
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Figure 2: Avedøre Power Plant in C
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Figure 5: Concept for a sustainable
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The role of biomass and CCS in Chin
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2.2.1 CCS Potential for ChinaCCS is
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80%70%60%China's share ofglobal CO
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In general, if the CCS technology d
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with high implementation of CCS Chi
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The European Biofuels Policy: from
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aimed to promote agriculture-based
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(EC, 2009b), and internationally vi
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Session 6B - Bio Energy IIRisø Int
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The commercial scale production of
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the production process parameters,
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NutrientWaterAlgal cultureproductio
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Schenk, P.M., Thomas-Hall, S.R., St
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Liquid biofuels from blue biomassZs
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Even though final ethanol yields we
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Integrated Gasification SOFC Plant
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2.1 Modelling of SOFCThe SOFC model
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where g 0 , R an T are the specific
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hand side y-axis corresponds to eff
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The moister content for these three
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Use of Methanation for Optimization
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power production from utilizing the
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2.1 Model DescriptionThe developed
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Figure 3: Flow sheet of methanation
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efficiency and turbine inlet temper
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[14] DNA - A Thermal Energy System
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On the effectiveness of standards v
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educing new car emissions to 120 g
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In addition energy consumption E an
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coefficient γ for the impact of fu
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400200Change in energy (PJ)01980 19
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Figure 9 depict scenarios for the f
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What are customers willing to pay f
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Randomly, continuous up to ±50%Acc
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The likelihood for the model is giv
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eally means that this factor and no
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Table 5-1 Parameter estimates from
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Table 6-2 Willingness to pay for 10
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Session 12 - Energy for Developing
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Risø International Energy Conferen
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existing renewable energy technolog
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useful energyend energysecondary en
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parts or the means of enforcing war
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The development of micro-hydro proj
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Table 1. Electric power generation
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5 ReferencesBajgain, S., Shakya, I.
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IntroductionElectricity has become
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of 2008, 43.6% of the total populat
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Hilmand provinces have comparativel
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Page 378 and 379: Figure 4. Variation in LCOE with si
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Page 398 and 399: increases, individuals acquire more
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Page 406 and 407: 7 ReferenceAlperovich, G., Deutsch,
Page 408 and 409: Table 1: Definitions of Variables a
Page 410 and 411: Session 13 - Energy StorageRisø In
Page 412 and 413: 2 Storage demand and resulting stor
Page 414 and 415: compressed air storages, demand sit
Page 416 and 417: Fig. 3: Options for underground sto
Page 420 and 421: Sensitivity on Battery Prices and C
Page 422 and 423: 3.1 Base caseA northern European en
Page 424 and 425: 4 ResultsThe model is run on a comp
Page 426 and 427: Furthermore, a slight decrease in t
Page 428 and 429: Night time charging increases with
Page 430 and 431: Lithuanian Energy Institute, PSE In
Page 432 and 433: atteries, Compressed Air Energy Sto
Page 434 and 435: negative net load, can be expected
Page 436 and 437: 25%Pct. of the year20%15%10%5%0.5-0
Page 438 and 439: 800006000040000MWh200000Netload-200
Page 440 and 441: [4] B. V. Mathiesen and H. Lund, "C
Page 442 and 443: Compressed Air Energy Storage in Of
Page 444 and 445: compressed air caverns, corrosion-r
Page 446 and 447: Figure 3: Distribution of salt depo
Page 448 and 449: Figure 6: EWEA's 20 year Offshore N
Page 450 and 451: spinning reserves can be provided b
Page 452 and 453: 7 Discussion and conclusionsThis pa
Page 454: Risø DTU is the National Laborator
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