Project: Implementation of Phase II of the Project “Integrated system of solid waste treatment facilities of Sofia Municipality– Design and Construction of a Mechanical-Biological-Treatment (MBT) Plant for processing waste and production of Refuse Derived Fuel” Employer: Municipality of Sofia, Bulgaria Contractor:  Consortium Aktor S.A. – Helector S.A. Type of contract: F.I.D.I.C (International Federation of Consulting Engineers) based contract of type Design-Build (Yellow Book). Type of project: Design, Build, Commissioning and Trial Operation. Capacity: 410.000tn/year of municipal solid waste (MSW) The Project includes design, construction, commissioning and trial run of “Plant for Mechanical Biological Treatment of Waste and Production of RDF-fuel” of capacity 410.000tonnes per year. More specifically, the following process are performed in the MBT Plant: Acceptance and pre-treatment of the incoming solid municipal waste. Mechanical separation and sorting of recyclables materials. Bio-drying of the waste. Mechanical treatment of the bio-dried material for the separation of the recyclable fractions and production of RDF. Biological composting of the organic fraction. Mechanical treatment of compost for the production of compost-like output (CLO). The infrastructural/auxiliary facilities of the Plant for MBT of waste include: Dust and odor removal system consisting of bag filters, biofilters, scrubbers and stacks. Wastewater water treatment plant. RDF storage building. CLO storage building. Storage building for the separated recyclable materials. Water supply and sewage networks. Reduction and distribution substation 110/20 KV and transformers. Water supply and sewage net works Process water tank Electronic weighbridge. The entire process in the MBT Plant is managed by an automated data control and acquisition system (SCADA system)

Project title: Tagarades Landfill gas Utilisation Awarding Authority: Regional Association of Solid Waste Management Agencies of Central Macedonia Project company: HELECTOR S.A Project products: Engineering, Construction & Operation of Landfill gas power plant Contract type: Concession Agreement with exclusive rights of landfill gas utilisation Project type: Renewable Energy Project (Landfill gas to energy) Capacity: 5,048 MW Project initiation: 2006 Project completion: 2033 Tagarades LFG Power Plant was constructed during 2005-2006 and is operated 24/7/365 by highly specialized scientific and technical personnel of HELECTOR SA. The plant is located near Tagarades Landfill, in the east side of Thessaloniki, while the landfill is going through its after-care. There are four CHP units type DEUTZ TBG 620 V16, with electrical output of 1,26 MW each and the corresponding permit is up to 5,048 MW power. The power plant is individually interconnected with HEDNO medium-voltage substation in Kato Scholari. The landfill gas produced in the landfill cells is collected and transferred to the power plant, renewable electrical energy is generated, so -with LFG combustion- greenhouse gases emissions are avoided (specifically, methane CH4), significantly improving the quality of air. The Operation and Maintenance personnel are skillful with expertise on gas engines, supporting the local community in many aspects.

Project: Mavrorachi Landfill gas Utilisation Awarding Authority: Regional Association of Solid Waste Management Agencies of Central Macedonia Project company: HELECTOR S.A Project products: Engineering, Construction & Operation of Landfill gas power plant Contract type: Concession Agreement with exclusive rights of landfill gas utilisation Project type: Renewable Energy Project (Landfill gas to energy) Capacity: 3,52 MW Project initiation: 2020 Project completion: 2041 Mavrorachi LFG Power Plant was constructed during 2017-2020 (including licensing and so on) and is operated 24/7/365 by highly specialized scientific and technical personnel of HELECTOR SA, since August 2020. The plant is located in Mavrorachi Landfill, in the greater area of Langadas Municipality of Thessaloniki. The landfill is operating since 2008 and municipal solid waste (MSW) from Thessaloniki is disposed daily. There are three CHP units type Jenbacher JGC 416, with electrical output of 1,173 MW each and the corresponding permit is up to 3,52 MW power. The power plant is individually interconnected with HEDNO medium-voltage substation near Liti village. The landfill gas produced in the landfill cells is collected and transferred to the power plant, renewable electrical energy is generated, so -with LFG combustion- greenhouse gases emissions are avoided (specifically, methane CH4), significantly improving the quality of air. The Operation and Maintenance personnel are skillful with expertise on gas engines, supporting the local community in many aspects.

The Waste Transfer Station in Elaionas Athens will serve the Municipality of Athens and neighboring municipalities. It consists of 3 parallel lines for the transfer of mixed waste with a capacity of 70 tn/h, one line for the shredding and transfer of bulky waste with a capacity of 20 tn/h and one line for the shredding and transfer of green waste with a capacity of 5 tn/h. To minimize environmental impacts, the above operations are carried out in a closed building which is served by three de-dusting and de-odorization networks of total capacity 155,000 m³/h. The transfer of mixed waste is done in closed containers and each mixed waste transfer line has a container exchange system of 4 containers’ capacity. The building infrastructure is complemented by the Maintenance Workshop with 4 maintenance positions and 1 washing position, an Administration Building, an Electrical Substation and an Entrance Guardhouse. The Project also has a fuel supply station, 2 weighing bridges for garbage trucks, 1 weighing bridge for trucks carrying containers, a radiation detection system, tanks for collecting rainwater and liquid waste. In addition to the necessary electromechanical infrastructure, the Project has an extensive automation-SCADA system that will control its operations and waste transport vehicles. The implementation of the project will contribute decisively to the reduction of operating costs, accelerate collection rates from the center and neighborhoods of Athens, improve the efficiency of the garbage truck fleet, reduce traffic load on roads and limit environmental impact.

Mechanical Biological Treatment Unit for Mixed Municipal Waste, Larnaca, Cyprus Project title Design, Construction and Operation of the Integrated Waste Management Facility of the Larnaka – Famagusta Prefecture Awarding Authority Municipal Body for Waste Management of Larnaka – Famagusta Prefectures Project company JV HELECTOR S.A – ELLAKTOR S.A. – Cybarco Ltd Project products Mechanical separation for the recovery of recyclable products Aerobic treatment of the organic fractio for the production of CLO Contract type Design, Construction and Operation Capacity 190.000 tons of mixed solid waste (treatment) 8.000 tons bulky waste 16.000 tons green municipal waste The Integrated Solid Waste Management Facility of Larnaca and Fammagusta in Cyprus was the first modern solid waste management Project in Cyprus. It was designed and constructed to meet the relevant regulations and guidance of EU. At the beginning, the facility covered the waste production of the Larnaca and Fammagusta districts while from 2018 and on receives the waste of the Nicosia District as well thus covering half of the waste production of the Republic of Cyprus. The facility commenced operation in April 2010 with the reception of Municipal Solid Waste, Municipal Bulky Waste as well as Green Waste. Helector SA exclusively designed the facility while the Joint Venture Ellaktor-Helector-Cybarco constructed and operates the Project. The treatment facility consists of the departments of Reception, Mechanical Separation, Fast Aerobic Composting/Curing/Refinery with the target to recover recyclable material (mixed paper, cardboard, film PE, PET bottles, HDPE/PP-Fe-Al packaging) with the extensive use of automatic units with optical sorting and the aerobic biodegradation of the organic fraction in closed, fully controlled, bioreactors. The facility consists of all the necessary dedusting and deodorizing units as well as a wastewater treatment plant including reverse osmosis for the minimization of the environmental impacts from its operation. The facility includes a Residue Sanitary Landfill for the residues that closes the loop of the waste management.

ASA Recycle, a subsidiary of HELECTOR, is mainly engaged in the sorting of recyclable solid waste into single recyclable materials for trading in licensed recyclers. More specifically, ASA Recycle is mainly active in the collection of solid recyclable waste, and the transport, sorting into individual recyclable materials, packing and promotion of these to its customers. At the same time, the company implements clean up works in organizations, companies, buildings, etc. from useless or recyclable solid materials, which are processed in its privately owned facilities. Then, the company promotes the recyclable materials to its partners and the rest of the materials to legitimate recipients. In addition, the company undertakes the destruction of files and documents to end up in an irrecoverable form. The separation (sorting) of recyclable materials, which come from the blue bin and Industrial & Commercial Packaging Waste (VEAS), at ΚΔΑΥ (Recycling Materials Sorting Plant) is carried out by machines and with the help of sieves or screens, magnets and optical separators, as well as manually by qualified personnel. A thorough quality control is carried out at all stages of the production process to ensure the homogeneity and quality of the final product. Some of the materials that are separated are: Paper – Cardboard (various qualities) Plastic (PET, HDPE, PS / PP, polystyrene, PE etc.) Metal Scrap (iron, copper, brass, aluminum) Glass Tetrapak Since 2015, ASA Recycle operates the first privately owned glass-processing factory in Aspropyrgos, Attica, which receives materials from the regions of Central and Southern Greece, as well as the islands of Greece and since 2017 operates in Thessaloniki the second privately owned glass processing unit, which serves all of northern Greece. The glass processing plant receives empty glass packaging, which is crushed using a Roller crusher and then separated by machines (using sieves or screens), magnets and optical separators) into a transparent flint and colored cullet. The company’s fleet consists of commercial trucks of various types and open top connex or press connex of various capacities, in order to be able to meet the requirements and needs of its customers. The company’s activity in the field of commercial industrial and domestic recyclable solid waste and the extensive experience in material recycling works made the company a valuable partner of particularly important private companies, as well as Public Organizations and Bodies. In addition, the company is audited by an international rating agency for the certification of the offered high services to its customers, always having the safety of its employees and the protection of the environment as a top priority. ASA Recycle Certifications: Certification ISO 9001 Certification ISO 14001 ΕΛΟΤ 1801:2008 / OHSAS 18001:2007

APOSTEIROSI S.A. has constructed and operates the Medical and Other Waste Treatment Center with Sterilization, located in the 2nd Industrial Area of Volos, providing a comprehensive and environmentally sound solution for managing of Medical Waste for the entire country. In addition, as a specially licensed company for the transportation of Hazardous Waste, it has organized a fully functional network for the collection and transportation of waste, covering a large part of mainland Greece. The mechanical equipment used for the sterilization of waste originates from the French construction company ECODAS and is one of the most modern and recognized worldwide, properly certified according to the applicable legislation. At the same time, the company’s personnel consist of the most specialized executives in the field of waste management and in combination with the excellent fleet of transportation, our company takes care of the fast and safe management of Medical Waste for the country’s medical units. Now in the middle of its second decade of operation and already established as one of the most reliable forces in the field, as well as an integral part of the country’s healthcare system, “APOSTEIROSI S.A.” continues to invest in the latest technologies and equipment, while constantly improving its services, in order to meet the continually increasing demands of its customers.  

HELECTOR is the leader in the field of Hazardous Medical Waste Management (HMWM), as it has constructed and operates since 2002, the only Medical Waste Incineration Plant (MWIP) in Greece, located in the Sanitary Landfill area in Ano Liossia. The owner of the project is the Special Inter-Collective Association of the Prefecture of Attica (EDSNA). The plant at Ano Liossia is the first and the only licensed incineration facility for hospital waste currently in operation in Greece. Applying the latest technology and the best available techniques, the plant successfully receives and manages 4,000 tons of waste per year, from 1,800 medical unit points around Greece (hospitals, clinics, clinical laboratories, doctors’ private practice, dental clinics, veterinary clinics and pharmaceutical warehouses). The highly trained personnel are ready to respond to the most demanding projects, such as the management of highly infectious waste, as well as all types of toxic waste. The facility has a daily capacity of 30 tons, 2 independent incineration lines, temporary storage cooling chambers, internal wastewater management, a radiation control gate and a continuous monitoring system of exhaust gases. The 24-hour operation of the incineration plant ensures the lawful destruction of all collected waste within a short period and the provision of the necessary documents, such as full destruction certificates from the disposal facility within a few days. Incineration is a treatment process that achieves: Complete Destruction of waste at temperatures above 1100 ºC. Complete destruction of infectious and toxic nature of the waste. Complete destruction of the commercial value of drug waste. Radioactivity control. Integrated waste management. 70% volume reduction. Principle of proximity. It should be stressed that the main objective of the employees and management of the plant is to protect public health and the environment by promoting transparency and sustainability. It is noted that, since August 2022, the concession contract of EDSNA’s Medical Waste Incineration Plant was signed and its operation for the next 23 years has been undertaken by EPALTHEA SA in which HELECTOR participates with 60%.

Project title: Ano Liosia Landfill gas Utilisation Awarding Authority Waste Management Association of Attica Project company BEAL S.A (HELECTOR – EDL) Project products Engineering, Construction & Operation of Landfill gas power plant Contract type Concession Agreement with exclusive rights of landfill gas utilisation Project type Renewable Energy Project (Landfill gas to energy) Capacity 24,22 MW Project initiation 2001 Project completion 2038 The company BEAL SA is a joint venture of HELECTOR SA. with the Australian company Energy Developments Ltd with each participating in the share capital by 50%. The power plant was implemented in two phases. The first phase (Station I) was implemented in 2001 and consists of 11 DEUTZ TBG620 V16 landfill gas engines with electrical power 1.26 MW each, while the second phase (Station II) started its operation in 2006 consisting of 4 landfill gas engines INNIO Jenbacher JGC620, 2.7 MW each. The total licensed production capacity amounts to 24.22 MW. The plant utilizes up to 15,000 m3/h of landfill gas produced by the landfill cells of OEDA West Attica in which the company has deployed a vertical suction as well as a horizontal transferal network to the Station. The annual electricity production amounts up to 180,000 MWh depending on landfill gas availability. In this way, the emission up to 800,000 tons of CO2 annually is avoided, making a significant contribution to the environmental footprint of the national target. At the same time, 4.5 MWth of the rejected Station’s II thermal energy are used to fuel the evaporators of the adjacent Leachate Treatment Plant further preventing the consumption of significant amounts of fossil fuels, while part of the of Station’s I thermal energy is used for district heating of the internal building needs. The operation of the Station as well as the construction and tuning of relevant landfill networks is done exclusively by HELECTOR’s SA personnel.