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The European Union (EU) has set ambitious targets for the decarbonization of its activities by 2050. The path for the decarbonization has specially focused on the emissions generated by energy intensive industries (EII).These are known to contribute to a third of the total greenhouse gas (GHG) emissions. In the current contribution three relevant industrial sectors are analyzed: ceramics, glass and steel. A common strategy has been followed for the assessment. Special attention has been focused on the energy requirements, GHG emissions, current overall production process employed, circular economy initiatives, brief description of successful cases of energetic biomass implementation, I+D alternatives for decarbonization and barriers to overcome., Proceedings of the 30th European Biomass Conference and Exhibition, 9-12 May 2022, Online, pp. 481-487

The aim of the present paper is to evaluate the most intensive demonstration of harvesting of olive tree prunings (OTP) ever occurred in Greece. In Agios Konstantinos, an integrated mulcher was used to harvest the local olive groves. The harvesting campaign was performed for two consecutive years. In total, for both years, the harvesting campaign lasted for 20 days where around 81 ha of olive groves were harvested, that amounted to 252 dry tons of harvested prunings. The aim of the paper is to evaluate an agricultural residue mobilization value chain in terms of performance, economics and fuel analyses of the harvested OTP. Via detailed monitoring, the present paper compares the harvesting demonstration results for both years. In brief, the average harvesting efficiency increased from 2.2 dry tons/hr (first year) to 2.4 dry tons/ hour (second year), whereas the corresponding harvesting and haulage costs of these harvesting campaigns were calculated at 61.8 €/ dry ton and 63.5 €/ dry ton, with an estimated commercial operation cost at 45.7 €/ dry ton. Finally, from 49 samples of OTP collected, the average moisture content was at 27.5% a.r., ash content at 4.5 % d.b. and the average HHV at 19.7 MJ/kg d.b.., Proceedings of the 29th European Biomass Conference and Exhibition, 26-29 April 2021, Online, pp. 69-76

The biomass use in the domestic heating sector in Greece has undergone an expansion since 2011, mostly due to two factors: the financial crisis and the increased taxation of heating oil on the one hand, and the lifting of the ban to biomass combustion in large urban areas. More than 80 % of the bioenergy consumption in Greece is coming from the residential sector and biomass is the RES with the highest contribution to the national primary energy consumption. However, the per capita consumption of solid biofuels is still one of the lowest in the EU-28. The current status of the solid biofuels market is not well documented, and its development has been quite disorganized; for example, quality assurance and certification schemes are still in their very early stages of development. The purpose of the present paper is to assess the market status of biomass streams produced from the agro-industrial sector, with emphasis on those generated from the olive oil and nut processing sectors, since both can produce solid biofuels (olive stones and nut shells respectively) which are within the scope of the BIOmasud® quality label scheme. Several data sources, including national, European and international statistics, and interviews with several market actors (e.g. fuel producers) are used to provide updates and insights regarding the potential quantities and prices of these fuels. A sampling campaign and subsequent fuel analysis of the aforementioned solid biofuels also provides some first insights regarding the possibilities of applying the BIOmasud® quality label for these agro-industrial residues in Greece.

Lignite constitutes a major energy source and has long been used for energy production despite its contribution in greenhouse gas (GHG) emissions, as a fossil fuel. For example, 27.4% of Germany’s electricity originates from lignite power plants, while in Greece more than 55% of its electric energy consumption is provided by lignite. 45% of the total global coal reserves consist of low-rank coals (LRCs) such as lignite. With this background, the utilization of lignite for energy production is expected to remain a common practice in the decades to come since the availability of lignite is considerable in many countries of Europe and the world (e.g. Germany, Poland, Greece, USA, and Australia). Therefore, problems regarding the combustion and use of lignite should be addressed in a more efficient and environmentally friendly way. One of the main existing problems is the high moisture contained in raw lignite as received from the mine. The high moisture content results in higher CO2 emissions per unit of energy produced and is responsible for high capital and transport costs as well as other technical problems such as reduction in coal friability and difficulties in its blending and pneumatic transportation. Therefore, processing of lignite through drying is considered of great interest in the implementation of energy production in lignite power plants. Taking into account the significance of the subject and the usefulness of such an attempt, an overview of the currently existing drying technologies, including both evaporative and non-evaporative drying methods is reported in the present paper.

Recent statistical surveys (2012) indicate that firewood corresponded to 23.8% of the total thermal energy consumption of households in Greece. This high percentage is a fairly recent development due to the increased taxation of heating oil and the lifting of a long-standing ban on biomass combustion in the urban centers. Good environmental performance of biomass heating systems require the use of a suitable fuel supply, however lack of experience means that customers are often unaware of the impact of fuel quality on the performance of their heating system.The purpose of this paper is to present efficiency and emission results of a 17 kW log wood boiler operated with three different varieties of wood coming from beech, olive and oak trees. The three fuel batches differ significantly in terms of main characteristics: beech: 9.5% / 0.7 %, olive tree: 13.9% / 0.6%, oak: 18.0% / 3.6% weight percentage for the as received moisture and ash on a dry basis respectively. The boiler is installed in a laboratory test stand and subjected to a common test procedure including the initial heating up phase, constant load operation and cool down phase. Emissions are continuously monitored and results indicate that during constant load operation CO, OGC, NOx and dust are generally at levels that respect the emission limits of EN 303-5 / Class 3 for all tested fuels, while NOx emissions are closely related to the fuel-N content. High CO emissions are observed for all tested fuels during the start-up phase and cool down phase, while high dust emissions during the heat-up phase are common. Overall results indicate that beech and olive tree yield quite similar environmental performance results, while oak has the higher unburnt emissions taking into account both the constant load operation and the calculated annual emissions., Proceedings of the 23rd European Biomass Conference and Exhibition, 1-4 June 2015, Vienna, Austria, pp. 712-715

The purpose of the current work is to present the experimental results from co-firing tests performed at a 20 kWth drop tube pulverized fuel furnace installed at the Institute of Combustion and Power plant Technology (IFK), University of Stuttgart. High ash and moisture low rank lignite utilized in the Megalopolis power plant in Greece was used as the main fuel. Olive kernel produced from a olive mill and drying plant, in the vicinity of the Megalopolis plant, and Refused Derived Fuel (RDF) produced in the Athens Mechanical and Biological Treatment Plant, were chosen as potential substitution fuels, due to their local availability and low cost. Each alternative fuel was tested at thermal shares of 15 and 30%; the experimental campaign included monitoring of gaseous emissions and sampling and analysis of unburnt particles, deposits and fly ash particles from the fabric filter. A comparison of results with the reference case of 100% lignite combustion indicates that co-firing lignite with the investigated fuels has the potential for decreasing some emission types and of improving combustion conditions in the furnace; in addition, despite the higher alkali and chlorine content of the fuels, the deposits formed during co-firing appear to be more easily removed via conventional boiler cleaning equipment, as they are less molten than the lignite deposits. Overall, co-firing with olive kernel or RDF appears to be an interesting candidate for implementation at the lignite­fired power plant using the investigated lignite type., Proceedings of the 21st European Biomass Conference and Exhibition, 3-7 June 2013, Copenhagen, Denmark, pp. 1180-1185

The object of this work is a study on the application of biomass co-firing in an existing Greek lignite power plant. The Meliti - Florina Power Plant in Western Macedonia has been used as a reference station for all the case study investigations. After a brief reference to the biomass potential of Western Macedonia, an analysis of the proposed technical solutions of biomass transportation and storage system and a technical solution for the actual scenario of co-firing biomass in the concerned station is given. For the different scenarios of feeding and combustion examined, computer simulations using computational fluid dynamics code have been performed The presentation of those technical solutions is followed by the techno-economic analysis and evaluation of the extension of the power station through implementing the biomass feeding and co-firing system. Thus, despite the difficulties encountered, mainly relating to a lack of necessary quantities of biomass and the need for greater organization in the field of biomass production, the prospect of implementing co-firing biomass in existing lignite-fired power stations is presented as a realistic and feasible scenario from a technical and economic point of view., Proceedings of the 20th European Biomass Conference and Exhibition, 18-22 June 2012, Milan, Italy, pp. 1877-1890

Lignite-fired power plants in Northern Greece produce about 50% of the electricity and account for nearly 60% of the allocated CO2 emissions. The implementation of biomass co-firing is considered a cost effective and efficient method for minimizing GHG emissions. However, despite a favorable legislative framework, co-firing in Greece has not progressed since low lignite costs and distance of power plants from harbor facilities limit access to internationally traded solid biomass. The improvement and optimization of local biomass supply chains is thus a strategic priority in the national context. The purpose of the present work is to present preliminary investigations of a wheat straw supply chain for a Greek lignite-fired power plant to be converted into biomass co-firing operation. On¬field demonstration data are analyzed in order to estimate costs for supply chains involving either pelletized straw or straw bales. Information of energy consumption is also presented for different cases and GHG emissions calculated according to the methodology of (COM 2010)11. Results indicate that the cost of straw delivered at the power plant varies depending on whether pelletization is included as a supply chain step. Overall, over short distances, transfer of baled biomass is more economic and results in lower GHG emissions, however the increase in the cost of the supply chain suggest that a pelletization step should be considered for longer distances. The transport cost of the supply chain also depends on whether the vehicles are assumed to return empty at their starting point or loaded. Also, compared to imported or domestic wood pellets, straw pellets have lower prices and could be more attractive to plant operators. Long-term fuel contracts are essential in order to ensure the financial viability of co-firing, especially if a reduction in the feed-in tariff is expected., Proceedings of the 20th European Biomass Conference and Exhibition, 18-22 June 2012, Milan, Italy, pp. 136-142

The BISYPLAN project aims to produce a handbook which can be used as a reference and resource by those seeking to develop bioenergy projects in their regions. The handbook aims to provide guidance for anyone who need not understand all the fundamental aspects of biomass¬ based energy systems but who needs a conceptual and overall understanding. Target groups are those who are involved in planning, who take strategic decisions and who are involved in the procurement process, but who feels inferior to the consultants and suppliers during the process. The handbook aims to explain the underlying logics and properties that make biomass ¬based energy systems different from fossil¬ fuel based energy systems. The handbook aims to remove some of the most common misunderstandings still prevalent among many people who have no extensive experience of biomass¬ for¬ energy and hence to promote the installation of new biomass ¬based energy installations worldwide. The purpose of this presentation is to present the contents of the handbook and disseminate its existence. The handbook, which is available in four languages (English, Italian, Estonian and Greek) is based on a tabular structure, with facilitate its reading along horizontal sections divided by biomass type (lingo¬cellulosic, herbaceous, putrescible, other) and vertical sections dealing with fundamental aspects of bioenergy systems (resources, logistics, conversion, economics). The BISYPLAN handbook is available on¬line for free and is expected to increase the number of bioenergy projects that produce truly positive and sustainable results for local communities., Proceedings of the 20th European Biomass Conference and Exhibition, 18-22 June 2012, Milan, Italy, pp. 2462-2464

Co-firing biomass with coal is widely considered as one of the most cost-effective and efficient methods of minimizing the GHG emissions of the electricity sector. Up to now, co-firing has been demonstrated at a number of power plants in Europe and abroad and significant operational experience and technical expertise has been accumulated. However, apart from technical issues, the adoption of co-firing for an existing power plant is a decision that relies heavily on the legislative and financial market framework. The purpose of the present work is to compare the status of co-firing activities in five European countries (Belgium, Greece, Hungary, Italy, Poland) in terms of the national support scheme for bioenergy, the presence of sustainability criteria for biomass and the structure of biomass markets. The differences in legislation and the overall market conditions produce large variations in each country, ranging from the trend to convert power plants to 100% biomass firing in Belgium, to the quick adoption of co-firing by older power stations in Hungary and Poland and to emerging initiatives, with various degrees of difficulties, in Greece and Italy. Based on these evaluations, the future perspectives of co-firing and the evolution of the respective biomass markets in each country, as well as wider EU trends, are assessed., Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 2517-2522

In the framework of the AGROinLOG H2020 Project, the Research Centre for Engineering and Agro-Food processing of CREA was in charge of supporting the birth of a new olive tree prunings-based energy chain in the Greek Region of Fthiotida (Central Greece), with particular regard to the pruning harvesting phase. Despite the huge areas of olive grow plantations, such bioenergy chains have never taken off anywhere in the Country. On the contrary in Italy the are several practical examples of pruning utilization for energy purposes. Among these, the 1 MWe plant active in Calimera (Lecce), named Fiusis, is the first biomass power plant in the world to use exclusively olive tree prunings as a fuel source. Fiusis has been identified as a reference model to be followed in the organization of the production chain to set up in Greece. This paper reports the key elements that allowed Fiusis to achieve the success highlighting its environmental, economic and social integration with the local territory. The main technical elements of the biomass plant, the supply chain management and the operational parameters of the harvesting machineries are described. Moreover, the first achievements obtained in Greece in transferring the ���Fiusis model��� are reported.

AGROinLOG project has tested the integrated biomass logistics centres (IBLC) concept in three real agro-industries in Europe. The relevance of the IBLC strategy relies on the fact that it allows agro-industries to create a new activity with lower investment, increasing incomes, stabilizing their annual activity (avoiding idle periods) and maintaining or creating new jobs. The demos’ studies were performed in Spain at a fodder industry, in Greece at an olive oil industry, and in Sweden inside a cereal processing industry. AGROinLOG validated these demos´ business models from a holistic perspective, also studying the replicability of the IBLC business model in other agro-industries from different sectors (vegetable oil extraction, olive oil chain, feed & fodder, wine, grain chain and sugar industry). Sectorial analysis was carried out as well, allowing the identification of opportunities among the targeted sector to replicate the IBLC concept, drawing barriers to overcome in each case. Thus, technical, economic and environmental feasibility of integrated biomass logistics centers (IBLCs) for food and non-food products have been assessed in detail.

The objective of this work is to make a quality assessment of important Mediterranean biofuels as pre-normative research with the aim of revising and, eventually, adapting the currently applicable standards and/or developing new ones. For this purpose, an extensive analytical work over a total of 347 samples of biofuels and biomasses previously identified as of high potential to be widely used as fuels for heating purposes (olive tree and vineyard prunings, olives stones and different types of fruit shells) collected across 7 Mediterranean countries has been performed. The integrated statistical treatment and analysis of the results have allowed to determine relevant characteristic values of each biofuel and to compare them by country and with the quality limits in the existing related quality standards ISO 17225-2:2014 and ISO 17225-4:2014, developed to grade wood pellets and wood chips, respectively, and the Spanish standards UNE 16003:2014 and UNE 16004:2014 developed to grade olive stones and fruit shells for residential use, respectively. It can be concluded that olive tree and vineyard prunings are not generally expected to meet the quality requirements concerning ash and copper contents that are currently in place in the cited ISO standards. The UNE standards for olive stones and fruit shells could be applicable in at least all European Mediterranean countries considered in this study. The work performed may significantly contribute to the sustainable market development of the studied biofuels., Proceedings of the 26th European Biomass Conference and Exhibition, 14-17 May 2018, Copenhagen, Denmark, pp. 900-905

Aim of the current paper is the monitoring of feedstock losses during the six months storage of harvested olive tree prunings (OTP), by comparing two storage solutions: i) uncovered, open-air storage and ii) covered storage. For this task, two identical conical piles of harvested prunings were built and monitored for calculating the changes in dry matter and energy content of the stored material over time. One pile was built as-is and the other was covered with a fleece. For each pile, sample bags were used in order to monitor the alterations in dry matter and energy content of the stored OTP. In overall, the covered pile showed greater storage performance than the uncovered pile, where the latter depended mostly on weather conditions. The covered pile presented lower dry matter losses after 6 months of storage (average value of 1.1 % compared to 4.6 % of the uncovered pile), stable moisture content throughout the storage period (around 10 % compared to fluctuating moisture content of uncovered pile from 11 % to 21 %), that also resulted in energy content gain (average pile value of energy content gain of 12.1 % compared to energy content loss of 5.1 % of the uncovered pile)., Proceedings of the 28th European Biomass Conference and Exhibition, 6-9 July 2020, Virtual, pp. 137-143

In the framework of the AGROinLOG H2020 Project, the Research Centre for Engineering and Agro-Food processing of CREA was in charge of supporting the birth of a new olive tree prunings-based energy chain in the Greek Region of Fthiotida (Central Greece), with particular regard to the pruning harvesting phase. Despite the huge areas of olive grow plantations, such bioenergy chains have never taken off anywhere in the Country. On the contrary in Italy the are several practical examples of pruning utilization for energy purposes. Among these, the 1 MWe plant active in Calimera (Lecce), named Fiusis, is the first biomass power plant in the world to use exclusively olive tree prunings as a fuel source. Fiusis has been identified as a reference model to be followed in the organization of the production chain to set up in Greece. This paper reports the key elements that allowed Fiusis to achieve the success highlighting its environmental, economic and social integration with the local territory. The main technical elements of the biomass plant, the supply chain management and the operational parameters of the harvesting machineries are described. Moreover, the first achievements obtained in Greece in transferring the “Fiusis model” are reported.

In the framework of the AGROinLOG H2020 Project, the Research Centre for Engineering and Agro-Food processing of CREA was in charge of supporting the birth of a new olive tree prunings-based energy chain in the Greek Region of Fthiotida (Central Greece), with particular regard to the pruning harvesting phase. Despite the huge areas of olive grow plantations, such bioenergy chains have never taken off anywhere in the Country. On the contrary in Italy the are several practical examples of pruning utilization for energy purposes. Among these, the 1 MWe plant active in Calimera (Lecce), named Fiusis, is the first biomass power plant in the world to use exclusively olive tree prunings as a fuel source. Fiusis has been identified as a reference model to be followed in the organization of the production chain to set up in Greece. This paper reports the key elements that allowed Fiusis to achieve the success highlighting its environmental, economic and social integration with the local territory. The main technical elements of the biomass plant, the supply chain management and the operational parameters of the harvesting machineries are described. Moreover, the first achievements obtained in Greece in transferring the “Fiusis model” are reported., Proceedings of the 28th European Biomass Conference and Exhibition, 6-9 July 2020, Virtual, pp. 977-981

An IBLC (Integrated Biomass Logistic Centre) is defined as a business strategy for agro-industries to take advantage of unexploited synergies in terms of facilities, equipment and staff capacities, to diversify regular activity both on the input (biomass feedstock) and output side (biocommodities & intermediate biobased feedstocks) thereby enhancing the strength of agro-industries and increasing the added value delivered by those companies. For the olive oil sector, pomace mills are the main agro-industries that can be targeted for the implementation of an IBLC concept, since they are of sufficient large size and sophistication, they have equipment (e.g. dryers) capable of handling biomass streams, they have large idle time of inactivity and, finally, they are located in areas with large untapped biomass potential from the agricultural sector, e.g. olive tree prunings. The aim of the present paper is to assess the biomass resources that can be mobilized by an IBLC operating in the olive oil sector in Central Greece. Two main input streams are considered: wet olive pomace, which is the standard incoming stream in a pomace mill, and olive tree prunings, which are the untapped local biomass potential. The outcome of the present paper is an increased understanding of the biomass resources that an olive oil sector IBLC can mobilize. This knowledge can be used to produce updated mass balances of an operating IBLC and to estimate the new revenue streams and economic opportunities that can be emerged by an olive oil IBLC. Moreover, the methodology developed in the paper to assess the biomass resources can be employed by other agro-industries, operating in the olive oil sector, in order to assess their possibilities for implementing the IBLC strategy., Proceedings of the 26th European Biomass Conference and Exhibition, 14-17 May 2018, Copenhagen, Denmark, pp. 309-313

The aim of the present paper is to compare the combustion behaviour of solid biofuels suitable for industrial applications: olive tree pruning (OTP) pellets and exhausted olive cake. The combustion is performed in operating conditions at one industrial fixed bed biomass boiler (0.5 MWth capacity) used to cover the heating demands of an olive mill. Combustion tests are performed at the industrial boiler for three consecutive days. During the first day the reference fuel (exhausted olive cake), that is normally used in the olive mill, is monitored whereas in the second and third day, the OTP pellets and a mixture of pellets and pulverized OTP respectively are combusted and monitored for emissions. Monitoring of emissions in terms of dust, CO, CO2, NOx, SO2, HCl and OGC emissions was performed and compared for each different fuel used. Furthermore, the boiler efficiency for each biofuel was calculated for evaluating the combustion performance of them. The combustion of the OTP fuels led to lower HCl emissions but increased CO and OGC emissions, while the ash formation exhibited signs of reduced slagging. For all fuels the high dust emissions highlighted the need for particle emission abatement equipment installation, while the behaviour of the boiler efficiency was directly linked to the air excess ratio, indicating that improved automated boiler controls are needed.

The utilization of agro-residues as a source of biomass is an opportunity for supporting the expansion of the bioeconomy in Europe. Among the multiple agro-residues, those produced from vineyards, olive groves and fruit plantation represent a relevant potential for many EU countries. Specifically, the woody biomass residues from Agricultural Pruning and Plantation Removal (APPR in short) is a paradigm of agro-residues being produced year after year, and in most of the cases, not utilized as a resource for added value activities like the production of energy, biochemical or other biocommodities. In this paper, the uP_running project provides a vision to understand the current status of APPR biomass utilization in Europe and gives some recommendations for establishing new value chains based on this fuel. In addition, the document describes how to make the APPR biomass value chains a reality: how the different stages of the value chain and logistics can be carried out, which are the main keys to make the value chain operative, how to ensure that the final user finds an added value in the APPR biomass they receive, and how to preserve the quality and market value., Proceedings of the 26th European Biomass Conference and Exhibition, 14-17 May 2018, Copenhagen, Denmark, pp. 1569-1582

The aim of the present paper is to compare the combustion behaviour of solid biofuels suitable for industrial applications: olive tree pruning (OTP) pellets and exhausted olive cake. The combustion is performed in operating conditions at one industrial fixed bed biomass boiler (0.5 MWth capacity) used to cover the heating demands of an olive mill. Combustion tests are performed at the industrial boiler for three consecutive days. During the first day the reference fuel (exhausted olive cake), that is normally used in the olive mill, is monitored whereas in the second and third day, the OTP pellets and a mixture of pellets and pulverized OTP respectively are combusted and monitored for emissions. Monitoring of emissions in terms of dust, CO, CO2, NOx, SO2, HCl and OGC emissions was performed and compared for each different fuel used. Furthermore, the boiler efficiency for each biofuel was calculated for evaluating the combustion performance of them. The combustion of the OTP fuels led to lower HCl emissions but increased CO and OGC emissions, while the ash formation exhibited signs of reduced slagging. For all fuels the high dust emissions highlighted the need for particle emission abatement equipment installation, while the behaviour of the boiler efficiency was directly linked to the air excess ratio, indicating that improved automated boiler controls are needed., Proceedings of the 28th European Biomass Conference and Exhibition, 6-9 July 2020, Virtual, pp. 275-279

Different types of agrobiomass (agricultural residues, agroindustrial byproducts, fast growing energy crops and short rotation coppice) is an abundant, indigenous energy resource that can be effectively used for meeting the European decarbonisation targets. There are many potential models and technical pathways for utilizing agrobiomass in this sense; one of the most promising is its use as a heating fuel in European rural areas and in applications such as households and farms, municipal and commercial buildings, and agro-industries and greenhouses. Despite the existence of some agrobiomass heating markets in Europe, mostly based on agroindustrial biomass byproducts or straw, the full market potential of agrobiomass heating is not realized due several limiting factors. The present paper introduces AgroBioHeat (www.agrobioheat.eu), a project funded by the European Union’s Horizon 2020 research and innovation programme, that aims to develop into a comprehensive platform for the market uptake of agrobiomass heating solutions through the implementation of a variety of activities design to develop trust in the capacity of this technology to decarbonize the rural heating market, develop vision for its deployment and provide support to a number of initiatives that will be implemented by the project. The paper serves as an introduction to the current framework conditions for agrobiomass heating and to the overall strategy and approach followed by the AgroBioHeat project., Proceedings of the 27th European Biomass Conference and Exhibition, 27-30 May 2019, Lisbon, Portugal, pp. 1873-1877

The biomass use in the domestic heating sector in Greece has undergone an expansion since 2011, mostly due to two factors: the financial crisis and the increased taxation of heating oil on the one hand, and the lifting of the ban to biomass combustion in large urban areas. More than 80 % of the bioenergy consumption in Greece is coming from the residential sector and biomass is the RES with the highest contribution to the national primary energy consumption. However, the per capita consumption of solid biofuels is still one of the lowest in the EU-28. The current status of the solid biofuels market is not well documented, and its development has been quite disorganized; for example, quality assurance and certification schemes are still in their very early stages of development. The purpose of the present paper is to assess the market status of biomass streams produced from the agro-industrial sector, with emphasis on those generated from the olive oil and nut processing sectors, since both can produce solid biofuels (olive stones and nut shells respectively) which are within the scope of the BIOmasud® quality label scheme. Several data sources, including national, European and international statistics, and interviews with several market actors (e.g. fuel producers) are used to provide updates and insights regarding the potential quantities and prices of these fuels. A sampling campaign and subsequent fuel analysis of the aforementioned solid biofuels also provides some first insights regarding the possibilities of applying the BIOmasud® quality label for these agro-industrial residues in Greece., Proceedings of the 26th European Biomass Conference and Exhibition, 14-17 May 2018, Copenhagen, Denmark, pp. 1621-1627