The bioenergy village: Power and heat from renewables - Viessmann

Contents

2l3ContentsAccepting challenges:Saving fossil fuels and protecting the climateThe installation of advanced, highly efficient systems contributesto ensuring a futureproof energy supply. Such systems can saveup to one third of the energy used in the heating market.Page 5Power and heat supply in the bioenergy villageSelf-organised cooperative models secure finance, acceptanceand local value creation to renovate a community's energysupply.Page 7Renewable local heating:Many benefits for residents and local authoritiesPermanently lower heating costs help ease the budgets ofhouseholds, businesses and local authorities. This creates scopefor other investments.Page 9 Viessmann – a partner to be relied upon at every stageFor project coordination, system technology and systemconstruction, Viessmann is the professional partner with allof the necessary expertise.Page 11Breuna-Wettesingen:Power and heat for 200 households100 % of Wettesingen's heat supply comes from renewables,the only bioenergy village in Germany where this is so. All thetechnology used comes from Viessmann's comprehensiveproduct range.Page 12Individual solutions using renewable energy systemsTo create a bioenergy village or even a partial solution,Viessmann has the ideal futureproof and economical renewableenergy system to meet every requirement.Page 15

Challenges

4l5Accepting challenges:Saving fossil fuels and protecting the climateEnsuring a futureproof energy supply andprotecting the climate are the greatestchallenges currently facing mankind. Energyconsumption worldwide has doubled since1970 and will triple by 2030. Energy pricesare becoming ever more crucial cost factors.Climate change is no less critical an issuethan future security of energy supply. CO 2emissions exert a critical influence on the risingtemperature of the Earth's atmosphere.Setting sustainable standards withbioenergy villagesThe heating market accounts for morethan 40 % of energy usage and the largestproportion of energy consumption; ittherefore can play a significant role in theachievement of agreed political climate goals.The installation of advanced, highly efficientsystems would save the heating market upto one third of its energy.Political goals with regard to energyand climateTo this date, there are no global bindingagreements on climate protection. By contrast,the German Federal Government has alreadyestablished concrete political goals regardingenergy and climate which should be achievedby the year 2050: 50 % energy savingscompared to 2008 60 % renewables 80 % reduction in CO 2emissionscompared to 1990A twin strategy has been developed forrealising these objectives, i.e. fossil fuels mustbe used more efficiently, while renewablesmust be used more intensively. In this context,numerous acts of parliament have beenrevised or newly drafted in Germany. The mostimportant are the Renewable Energy SourcesAct (EEG), the Renewable Energies Heat Act(EEWärmeG), the CHP Act (KWK-Gesetz) andthe current Energy Saving Ordinance (EnEV).Bioenergy villages can contribute to thissaving. All households are supplied froma local heating network whose energy isgenerated from renewable fuels on theoutskirts of the village. These fuels come fromagricultural resources which are processedin a biogas plant, or from local forests. Everybioenergy village is therefore a strategicsustainability project which protects theclimate and environment, and in an idealscenario, does not consume fossil fuels suchas oil or gas.Low initial costsIt usually costs around €4500 for onehousehold to connect to the heating networkof a bioenergy village. This includes acontribution to the operator association,which is usually a cooperative.In comparison to a conventional oil heatingsystem, the price for heating is reduced byaround 30 %. In fact, savings during operationrise continually over several years. The CO 2savings achieved are above 50 %.

Environmental protectionBioenergy villageNeighbourlinessPartnershipSustainableenergy generationA bioenergy village is primarily a community in which reliable partnerships and neighbourliness amongst the residents are contributing factors for success.Low energy costs make the bioenergy village attractiveto families and commercial enterprisesProtection of the climate and environmentStructure for future energy supplyLocal value creationSuitable for any villageIndependence from energy supply utilities

6l7Renewable power and heat supplyin the bioenergy villageCrude oil can only continue to be extractedat current rates for a few more decades.Consumers must therefore change to otherfuel types and find sustainable solutionsto bring about the urgently needed energytransition. Bioenergy villages that userenewables to supply their own heat andpower can assist with this.The need for a strong communityHowever, a new strategy for energy supplyand energy efficiency will only be successfulif residents join together to form a strongcommunity and develop their own initiative.Through self-organised cooperative models,finance, acceptance and local value creationcan be secured to renovate a community'senergy supply.There are approximately7500 biogas plants in Germany.From the beginning of the project onwards,residents, local businesses, contractorsand, last but not least, local authorities areinvolved. Everyone has the same goal ofgreater independence from national energysupply utilities and no longer being at themercy of rising fossil fuel prices.What makes a bioenergy village special?Around 100 parishes and villages in Germanycan already call themselves bioenergyvillages. They meet the following frameworkconditions: 100 % of the village's supply comes frompower generated with renewables At least 5 % of the heat provision is basedon biomass More than 50 % of the bioenergy plantis owned by the "heat customers" andfarmers who provide the biomass The population of the village is generallybetween 500 and 1500 residentsPartial solutions withbioenergy systems are possibleAlongside "full" bioenergy villages, numerousconcepts have been developed in whichonly part of a town or village is supplied bybioenergy systems. Such places may not fulfilall the criteria for stand-alone provision ofrenewable fuels, yet they still allow significantsavings to be made.With our comprehensive product range,Viessmann offers efficient and economicalcomponents that allow the best possiblesolution based on energy efficient andrenewable heating systems to be found underthe given conditions.

Bioenergy village162345 7 5 4 89101 Agricultural biomass (energy4 Combined heat and power unit7 Biomass boiler9 Local heating networkcrops, slurry, manure)2 Biogas plant(CHP)5 DHW cylinder8 Oil/gas boiler for peakloads10 Exporting power to the public grid3 Biogas pipe6 Forest-based biomassGreenhouse gas emissions from heat produced from fossil fuels and renewable sourcesGrams of CO 2 equivalent per [kWh]Night storage(power)OilcondensingNatural gascondensingDistrict heatingHeat pumpLocal heatingfrom biomassSolar thermalsystemWood heatingsystemFossil fuelsRenewablesAverage CO 2 emissions per kWhof heat from fossil fuels andrenewable heating technologies.* German power mixSource: German Renewable Energies Agency, 2010

8l9Renewable local heating:Many benefits for residents and local authoritiesThe criteria for a bioenergy village arequite straightforward. The community isusually rural and has between 500 and1500 residents.Secure and economical supplyThe energy centre should be designed andconstructed outside the village to avoidcongestion for the residents from deliveriesof the necessary biomass. The energy centreis designed to permit an extremely reliablesupply of heating water and domestic hotwater at any time. Seen over several decades,every household invests just once to becomeconnected and then has no further costs.Permanently lower heating costs help easethe budgets of households, and create scopefor other investments. These might includeinsulation, for example, to further reduce heatconsumption.Strengthening the regional economy andeasing the budgetThe biomass required for heat generationusually comes from nearby sources. Thisstrengthens regional economies, as well aslocal agriculture and forestry. It also involvesvalue creation, investment and job security.Replacing conventional heatingIn smaller communities that mainly consistof detached houses, the typical fuel untilrecently has been oil. With renewable localheating networks, the individual heat sourcein the house makes way for a heat transferstation the size of a wall mounted gas boiler,which measures actual consumption via aheat meter. This also means the oil tank issuperfluous, so it can be removed, makingdirt and the smell of oil a thing of the past.The space this creates could be used for ahobby room, for example.Locational advantage thanks to lowenergy costsThe status of a bioenergy village makes it amore attractive place for developing industrialreal estate. Existing and new businesseshave a locational advantage as they can profitfrom the considerably lower energy costscompared to oil and gas.Furthermore, savings from a cheaper heatsupply for public buildings help to relieve thebudget of the local authority.

Bioenergy villageThe Schmack biogas plantgenerates biogas using the wetfermentation process.Pellet and woodchip boiler withflat moving grate combustion up to1700 kW

10l11Becoming a bioenergy village:Viessmann – a partner to be relied upon at every stageAs a complete supplier of energy systems,Viessmann offers all the necessarycomponents from a single source. Inconjunction with our Group companies, wesupply not only the right heating systems forrenewables, we also design and constructthe biogas plant. This includes raw materialsmanagement and operational control foroperating the CHP units with the biogasobtained. In addition, Viessmann supplies astandardised control unit to operate all theheat sources and the heating network.There are invaluable benefits to this for thelocal authority or cooperative as operators ofthe local heating network. There is just onecontact person for questions on technology,maintenance and repairs.design engineers are involved. Cooperationbetween Viessmann, regional serviceproviders and local construction companies isvery important with regard to value creationand securing jobs.All Viessmann services availableon requestFrom the initial concept, right through tocommissioning, costs arise which have to bemet. Comparatively small amounts for thefirst steps are usually covered by the localauthority's budget. However, high costs willeventually be incurred – at least when thebusiness plan is formulated and engineeringservices are engaged. Viessmann will financeand cover these costs with securities as partof its involvement in the project.Project partner from the word goRight from the start, Viessmann sees itselfas part of the project team. It accompaniesthe village community as it takes its firststeps towards becoming a bioenergy village.This includes studies that check, at variouslevels of detail, the feasibility of the conceptsand their economic viability. In this area,Viessmann's project development departmentcan provide valuable support. Moreover, localAs a professional partner, Viessmannhas all the knowledge needed for projectcoordination, system technology and systemconstruction.The direct online contactAnyone interested can go towww.viessmann.de/bioenergiedorf for furtherinformation or to find the relevant contactperson.Procedure for designing and constructing a bioenergy village4. ServicesMaintenanceand service3. Project implementationDetailed engineeringDesign and commissioningAt all stages of a bioenergy village'sTime1. Studies*Preliminarystudy2. Project development*Technical and economical conceptPresentation of possible subsidiesObtaining permitsdevelopment, Viessmann is theprofessional partner for everything,from consultation through tocontracting, delivering all servicesand components from a singlesource.Procedure*In conjunction with local designengineers

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10k WD N 2 57 k W2 5WD N 12 5D N 6 51100810 4D N 5 010 1 0 8820k WD N 6 51110141D N 2 525 k WD N 2 5D N 2 518 k WD N 2 5D N 2 520 k WD N 2 5120300 57 k W1110 03611100221110 1 1 111101141110 1 3 7120300 418k WD N 2 531 k W27k W15 k W1110080080DN 125D N 2 51108001 - 124 k W1110060066D N 2 515 k WD N 2 5D N 2 519 k WD N 2 518k W111007 220 k W22 k W18 k W111013 0D N 4 01110101051110 1 2 1111000515k WD N 2 5DN 125D N 6 5D N 5 0D N 5 0nur A nscschluss1202003DN 100E inbindungS pitzenlastDN 125D N 6 5D N 6 520k W25k W15k W1110041D N 2 5D N 5 020 k W111006 7D N 2 520 k W20k W15k W 1108001 - 2Nur A nschlussD N 2 5D N 2 5M ikrogasleitung1110117D N 2 51110010 921 k W12 k W20k W111000D N 2 515k W111013D N 2 5D N 2 5100900 4D N 2 5DN 125111011018k W1203009E inbindnungW ä r m e a u s B G A1009019010111013318 k WD N 6 5D N 3 21110050D N 2 518 k WD N 2 510k W111010 3DN 100100900220 k W18 k W17 k WD N 2 515k WD N 2 5111002430k W17 k WD N 2 5D N 2 5D N 3 2D N 6 51110 1 2 615 k W120200111100311110125D N 2 5D N 2 518k W18k WD N 2 5D N 2 511101341111 0 1 3 9DN 1 0 0D N 2 5D N 2 5D N 8 032 k W111009515k WH agedomD N 8 0DN 1 0 01009012 - 1D N 2 5DN 10015k WDN1 0 01009007D N 3 2DN 1 0 0D N 2 5jeweil s1 D ück er15k W1009009D N 2 5DN 12512l13Holzpellet-KaskadeHeating centre withthree biomass boilers01D2ND N 1Anschluss mussim Detail nochgeklärt werdenHighly effectiveinsulation for pipeworkin the local heatingnetworkD N 2 5 15CHP units for supplyingpower and heatBiogas for operating theCHP unitBiogasanlageLow temperature boilerwith biogas burner forsecure supply if a CHPunit fails30 % lower heating costsThe price for heating in the Wettesingenbioenergy village is based on all investmentand running costs. Compared to the costs forindividual heating systems that use fuel oil,the community's heat supply is now around30 % cheaper. Since the prices of oil and gascan be expected to continue to rise, the pricebenefit will become even greater in future.The most important facts at a glance: Germany's first bioenergy village with100 % of its heat supply from renewables Substituting 600,000 litres of fuel oil per year Saving 1300 tonnes of CO 2per year All system technology from a single source– with many benefits where operation,maintenance and repairs are concerned

Comprehensive range for bioenergy villagesCombined heat and power stationwith two biomass boilers.All components for the bioenergy village from a single sourceBiogas systemCombinedheat and powerunitBiomassboilerPelletboilerHeat pumpLowtemperatureboilerTransferstationPhotovoltaicmoduleSolarcollector

14l15Individual solutions using renewableenergy systemsThe comprehensive range of products andservices from Viessmann offers individualsolutions with efficient systems for allapplication areas and energy sources. Asenvironmental pioneers, the company has, fordecades, been supplying particularly efficientand clean heating systems for oil and gas, aswell as solar thermal and PV systems, heatgenerators for sustainable fuels, and heatpumps.Wood combustion system withan output of 1700 kWFutureproof and economicalTo create a bioenergy village or even a partialsolution, Viessmann has the ideal futureproofand economical renewable energy systemto meet every requirement. Low loss, highlyinsulated pipework is required to build thelocal heating network. For apartments,detached or two-family houses, commerceand industry, heat transfer stations areavailable that are equally suitable for both newbuild and modernisation projects.Biogas CHP unit,outputs:366 kW el437 kW thThe product range for all fuel types andoutput ranges: Boilers for oil or gasup to 116 MW heat or 120 t/h steam Solar thermal systems Photovoltaic systems Heat pumps up to 2 MW Wood combustion technologyup to 50 MW Combined heat and power generationup to 50 MW el Biogas production plants from18 kW elto 20 MW gas Biogas upgrading plants up to 3000 m 3 /h System accessoriesLow temperature boilerwith biogas burnerOutput: up to 1300 kWBiogas plant for wet fermentationof biomass