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CHAMELEON FACADE – THE FIGHT AGAINST CLIMATE CHANGE

Photo-illustration: Freepik (vecstock)
Photo-illustration: Freepik (wirestock)

Global warming has prompted researchers around the world to find innovative solutions to make buildings conserve energy as efficiently as possible. One of the solutions is the brightest white paint, which reflects the Sun’s rays more successfully than any other colour. This technique is also used in modes of transport, such as aeroplanes. While the idea is great for the increasingly hot summer days, it is not so great for colder days. One thing is certain – whitewashing the buildings seasonally, i.e. painting them white in summer and black in winter, would certainly not contribute to the fight against climate change.

As nature offers us solutions for almost all the problems we face, this is no exception. Scientists from the University of Chicago found inspiration for their invention in a very interesting animal – the chameleon.

They invented a material that changes its infrared colour depending on the air temperature, which regulates the heat it absorbs or emits back into the atmosphere. Namely, during hot days, this material can emit up to 92 per cent of the infrared heat it contains. On the other hand, in the colder period of the year, it can emit only 7 per cent of this heat, to retain the rest and help the building maintain heat.

Scientists explain how the material works. The layer has two conformations. The first is solid copper and the second would be best understood if it were described as an aqueous solution. With the use of a very small amount of electricity, these two conformations interchange from one to the other. In the case of solid copper, heat is retained, while this aqueous solution emits heat back into the atmosphere.

The scientists presented the effectiveness of their solution through a concrete example of an ordinary building in America. It takes less than 0.2 per cent of the building’s total electricity consumption would be needed to change between the two conformations. It is important to note that when such a change occurs, no electricity is needed to maintain the current state for a further period. The advantage that this material brings is a possible saving of over 8 per cent of annual energy consumption for the building’s so-called HVAC system, that is, heating, ventilation and air conditioning.

In terms of the colour of the building front, scientists say that almost any colour could be used, because in the aqueous state – which is transparent – any colour behind it can be applied without interference.

Although more time is needed for the idea to be fully developed and to ensure its wide application, the University researchers are very hopeful. Until its application takes root in our region, using all the possibilities available to us to make our homes or offices more energy efficient will be a step forward towards a safer future.

Katarina Vuinac

Rise in used heavy-duty vehicles a major contributor to pollution, prompting calls for more stringent regulations

Photo-illustration: Unsplash (Vlad Vasnetsov)
Photo-illustration: Unsplash (Rodrigo Abreu)

While heavy-duty vehicle (HDV) exports represent a modest 3.6 per cent of the global automotive trade’s total value, their associated CO2 emissions have surged by over 30 per cent since 2000, with trucks contributing 80 per cent to this increase. Moreover, HDVs participate substantially to environmental pollution, accounting for over 40 per cent of on-road nitrogen oxides (NOx) emissions, over 60 per cent of on-road particulate matter (PM 2.5), and more than 20 per cent of black carbon emissions, as revealed in the latest report by the UN Environment Programme (UNEP).

The report Used Heavy Duty Vehicles and the Environment – A Global Overview of Used Heavy-Duty Vehicles: Flow, Scale and Regulation report, jointly launched by the UNEP and the Climate and Clean Air Coalition (CCAC), provides a first global overview by the UN of the scale and regulation of used HDVs and their contribution to global air pollution, road accidents, fuel consumption and climate emissions. The report recommends ways to reduce the harmful aspects of used HDVs on people’s health and the climate.

According to the study, HDVs are projected to considerably continue to grow with increasing economic activities and the need to move people and goods. This is based on past trends where global sales of trucks and buses doubled in 15 years (2000-2015).

Many developing countries rely on used heavy duty vehicles (HDVs) imports to grow their fleet. While this promotes more affordable means to increasing mobility needs in these countries, the report finds that regulation and enforcement on the quality of used HDVs imported are either low or non-existent. Further amplifying their impacts, especially in the case of old, polluting, and unsafe used HDVs.

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To date no country has minimum requirements for exporting used HDVs. The report finds regulations in over half of used HDV importing countries to be ‘weak’ or ‘very weak’ and enforcement to be inadequate. For example, while 25 African countries have adopted standards on used HDVs towards air pollution control, climate mitigation and improved road safety, only four have fully implemented these. Worldwide, only two countries have included used vehicles in their national climate action plans (NDCs).

Photo-illustration: Unsplash (Sajjad Ahmadi)

Rob de Jong, head of UNEP’s Sustainable Mobility Unit, said: “Trucks and buses contribute to economic growth just about anywhere in the world, but ambitious regulations are needed to curb their emissions causing major environment and health impacts. Introduction of cleaner bus technologies can be a major driver for the global revolution to low and, ultimately, zero emissions transport.”

The report emphasizes that it is a shared responsibility of importing and exporting countries to ensure cleaner and safer used vehicles are on the roads of developing countries. It shows the need for regional cooperation for introducing and enforcing minimum standards, such as emission standards and age limits, raising public awareness, and more research, for both environment and road safety benefits. For example, by adopting Euro VI equivalent vehicle emission standards and cleaner fuels, as much as 700 thousand premature deaths can be avoided by 2030.

Currently 97 per cent of all newly registered trucks and 73 per cent of buses in the EU run on diesel. Better regulations on used HDVs can also lead to a leapfrog and greater uptake of advanced technologies in developing countries, including electric buses and trucks.

The report represents a first effort of quantifying and qualifying used heavy-duty vehicle flows, based on export data from Japan, the European Union, and Republic of Korea – altogether representing about 60 per cent of the total new and used HDV export market – to 146 predominantly low- and middle- income countries. The report has limitations, most notably discrepancies in statistics, as well as lacking publicly available data from the USA, which does not separate exports of new and used vehicles, and China, an emerging exporter.

Source: UNEP

NEW EU INVESTMENTS IN HYDROGEN INFRASTRUCTURE DEVELOPMENT

Foto-ilustracija: Pixabay
Photo-illustration: Freepik (freepik)

The European Commission has approved a joint project of seven member states called IPCEI Hi2Infra, a third important project of common European interest aimed at supporting hydrogen infrastructure. France, Germany, Italy, the Netherlands, Poland, Portugal and Slovakia participated in drafting the project, whose goal is to reduce dependence on natural gas. Furthermore, the project should help achieve the goals of the European Green Deal and the REPowerEU plan.

More specifically, the Member States will provide a total of 6.9 billion euros of public funding, which is expected to subsequently open up 5.4 billion euros of private investments. Under the project’s auspices, 32 companies, which are operational in one or more member states, including small and medium-sized enterprises, will participate in 33 projects.

IPCEI Hi2Infra will include a wide part of the hydrogen value chain by supporting:

  • the use of 3.2GW large-scale electrolysers for the production of renewable hydrogen
  • installation of new and repurposed hydrogen transmission and distribution pipelines, approximately 2,700 kilometres long
  • development of large hydrogen storage facilities with a capacity of at least 370GWh
  • construction of a transfer terminal and associated port infrastructure for liquid organic hydrogen carriers (LOHC) to handle 6,000 tonnes of hydrogen per year

As stated on the European Commission’s website, the implementation of several projects is expected to take place in the coming years. Some large electrolyzers will be operational between 2026 and 2028 and pipelines between 2027 and 2029, depending on the geographic area.

The plan is to complete the project by 2029.

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These projects are very ambitious because they aim to develop an infrastructure that surpasses what the market offers at the moment. They will be the first blocks in an integrated and open hydrogen network, which will be available, as stated, under non-discriminatory conditions. The project will facilitate the bigger use of hydrogen supply from renewable sources in Europe, as well as the decarbonization of economic sectors that depend on hydrogen in order to reduce their carbon emissions.

Energy portal

MT-KOMEX IS BUILDING IN THE EUROPEAN UNION FOR THE FIRST TIME

Photo-illustration: Pixabay (Michael_Pointner)
Photo-illustration: Unsplash (Michael Fortsch)

In early February, the MT-KOMEX Company started the construction of a photovoltaic power plant in Sisak-Moslavina County in Croatia. For the first time, the company is engaged in EU territory, thus continuing to expand its operations and gain more experience beyond Serbia’s borders.

The project is implemented in the city of Novska. MT-KOMEX is building a rooftop solar power plant with a total power of 280 kW AC and 340,625 kWp, for Thermo Stone d.o.o. Novska.

The plan is for the construction to be completed by the end of the current month or by the beginning of March at the latest.

In terms of equipment, the roof panels will be positioned in the southwest and northeast direction, with a slope that closely follows the roof’s slope. The company opted for Luxor Solar 545 Wp as the panel manufacturer and is using inverters from Fronius and a TR sheet structure for pitched roofs made by K2 Systems.

The electricity produced by this solar power plant will be used exclusively for local needs and will not be forwarded to the national power grid.

Considering that this is the first time that MT-KOMEX is working in the EU, it is interesting to note what differences and challenges they faced, although they are not drastically different to the usual working conditions that the company is accustomed to.

The works are carried out based on the Electric Power Installations Main Project, as well as the obtained Electric Power Permit (EPP), provided by the Croatian Electric Power Company (HEP). The company has to strictly adhere to the requirements and conditions stated in the EPP. The project also implies conducting certain studies, one of which is the Power Grid Impact Study.

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The procedure for building a power plant is very similar to that in Serbia. To begin with, HEP very much resembles the Serbian power provider, EPS, and it has similar design and connection requirements (the so-called UPP), with a slight difference in the aforementioned studies that need to be drafted.

Essentially, both documents – EPP and UPP – are necessary when it comes to planning, designing and implementing infrastructure projects, as well as for issuing certain permits such as connecting the facility to the power grid. The goals of the two documents’ goals coincide, while the biggest difference actually lies in the terminology.

When simpler projects are implemented without a building permit, the project participants need to adhere to the relevant Rulebook, based on which supervision is not required, nor is reporting the execution work or keeping a construction site diary, which is very similar to the relevant rules in Serbia. As for the project which MT-KOMEX is currently implementing, the engineers in charge of this task have registered the works and keep a construction site diary according to their standards, given that in Croatia, the diary is kept exclusively through the eGrađanin website, which requires inputting a building permit number, which is another difference. One of the key challenges is actually exporting the required equipment, for which export customs clearance from Serbia and import customs clearance for Croatia must be carried out.

All in all, MT-KOMEX has added another town, this time in Croatia, to its reference list, in which it will produce green kilowatts and which will enhance the work experience of the company’s engineers.

Energy portal

Air quality: Council and Parliament strike deal to strengthen standards in the EU

Photo-illustration: Freepik (rawpixel.com)
Photo-illustration: Freepik (frimufilms)

The Council presidency and the European Parliament’s representatives reached a provisional political agreement on a proposal to set EU air quality standards to be attained with the aim of achieving a zero-pollution objective, thus contributing to a toxic-free environment in the EU by 2050.

It also seeks to bring EU air quality standards in line with the World Health Organization (WHO) recommendations.

Strengthening air quality standards

With the new rules, the co-legislators agreed to set out enhanced EU air quality standards for 2030 in the form of limit and target values that are closer to the WHO guidelines and that will be regularly reviewed. The revised directive covers a host of air-polluting substances, including fine particles and particulate matter (PM2.5 and PM10), nitrogen dioxide (NO2), sulphur dioxide (SO2), benzo(a)pyrene, arsenic, lead and nickel, among others, and establishes specific standards for each one of them. For instance, the annual limit values for the pollutants with the highest documented impact on human health, PM2.5 and NO2, would be reduced from 25 µg/m³ to 10 µg/m³ and from 40 µg/m³ to 20 µg/m³ respectively.

The provisional agreement provides member states with the possibility to request, by 31 January 2029 and for specific reasons and under strict conditions, a postponement of the deadline for attaining the air quality limit values:

  • until no later than 1 January 2040 for areas where compliance with the directive by the deadline would prove unachievable due to specific climatic and orographic conditions or where the necessary reductions can only be achieved with significant impact on existing domestic heating systems
  • until no later than 1 January 2035 (with possibility to extend it by two more years) if projections show that the limit values cannot be achieved by the attainment deadline.

To request these postponements, member states will have to include air quality projections in their air quality roadmaps (to be established by 2028) demonstrating that the exceedance will be kept as short as possible and that the limit value will be met by the end of the postponement period at the latest. During the period of postponement, member states will also have to regularly update their roadmaps and report on their implementation.

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Air quality roadmaps, plans and short-term action plans

In cases where a limit or target value is exceeded or there is a concrete risk of exceeding the alert or information thresholds for certain pollutants, the text requires member states to establish:

  • an air quality roadmap ahead of the deadline if between 2026 and 2029 the level of pollutants exceeds the limit or target value to be attained by 2030
  • air quality plans for areas where the levels of pollutants exceed the limit and target values set out in the directive after the deadline
  • short-term action plans setting out emergency measures (e.g. restricting the circulation of vehicles, suspending construction works, etc.) to reduce the immediate risk to human health in areas where the alert thresholds will be exceeded
Photo-illustration: Pixabay (Maruf_Rahman)

The co-legislators agreed to include softer requirements for establishing air quality and short-term action plans in cases where the potential to reduce certain pollutant concentrations is severely limited due to local geographical and meteorological conditions. When it comes to ozone, in cases where there is no significant potential to reduce ozone concentrations at local or regional level, the co-legislators agreed to exempt member states from establishing air quality plans, on the condition that they provide the Commission and the public with a detailed justification for such exemption.

Review clause

The provisionally agreed text calls on the European Commission to review the air quality standards by 2030 and every five years thereafter, in order to assess options for alignment with the recent WHO guidelines and the latest scientific evidence. In its review, the Commission should also assess other provisions of the directive, including those on postponement of the attainment deadlines and on transboundary pollution.

Based on its review, the Commission should then put forward proposals to revise air quality standards, include other pollutants and/or propose further action to be taken at EU level.

Access to justice and right to compensation

Photo-illustration: Unsplash (Daniel Moqvist)

The proposed directive sets out provisions to ensure access to justice for those who have a sufficient interest and want to challenge its implementation, including public health and environmental NGOs. Any administrative or judicial review procedure should be fair, timely and not prohibitively expensive, and practical information on this procedure should be made publicly available.

Under the new rules, member states would have to ensure that citizens are entitled to claim and obtain compensation where damage to their health has occurred as a result of an intentional or negligent violation of the national rules transposing certain provisions of the directive.

The text as amended by the co-legislators also clarifies and expands the requirements for member states to establish effective, proportionate and dissuasive penalties for those who infringe the measures adopted to implement the directive. As applicable, they will have to take into account the severity and duration of the infringement, whether it is recurrent, and the individuals and environment affected by it, as well as the real or estimated economic benefits derived from the infringement.

Source: European Council

HOUSES MADE FROM SHIPPING CONTAINERS

Photo: courtesy of Goran Ergić
Photo: Courtesy of Goran Ergić

Warm, functional, and well-designed homes, usually of small square footage and made of environmentally friendly materials, are becoming a must for people who strive for a sustainable lifestyle. Mobile homes, which provide a special sense of freedom and a certain degree of flexibility, are increasingly being made from shipping containers. Thanks to the idea and skilled hands of Goran Ergić, containers that are no longer in use become ideal places for workspace, rest or home and can also be excellent data centers, control units, data storage units, and rooms for aggregates.

Interest in different types of architecture and construction using the existing potential that incorporates environmental protection has always appealed to Goran. He got the idea to breathe new life into containers that had already served their lifespan during an annual vacation a few years ago. That’s when he bought the first container and started the restoration, which lasted a little longer than he imagined. During that time, the idea to create Container Home Solutions and work under the Avala Home brand was born. Initially, he carried out all the work in the family house’s yard, while today, he has a small production hall.

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Mobility and long life

Photo: Courtesy of Goran Ergić

Shipping containers are made of COR-TEN steel, one of the best steel alloys. It practically means that, with minimal maintenance, container houses can last up to 70 years. Furthermore, they are mobile and completely different from standard prefabricated houses. During the renovation, closed-cell polyurethane insulation is used for insulation, three times better than standard stone wool insulation and is one of the best in the market.

Goran pays special attention to energy efficiency, which he achieves by using three-layer glass with seven-chamber profiles that enable additional thermal protection. Also, all windows and doors are sliding, while utmost attention is paid to making maximum use of the space. Goran underlines that he always uses materials that are of top quality to make the building durable. All materials used for the renovation of containers must have an eco-label. The adaptation of shipping containers is an entirely modular construction system. From day one, the buyer can participate in drafting relevant plans and choosing the facility’s appearance. Goran points out that the design is very precise and that the main goal is to make maximum use of the space. A significant advantage of these containers is the possibility of combining several units and a wide choice of materials. In the end, the customers get a unique, functional, turnkey solution made according to their wishes.

Prepared by: Milica Radičević

Read the story in the new issue of the Energy portal Magazine CIRCULAR ECONOMY

Commission approves up to 6.9 billion euros for the third Important Project of Common European Interest in the hydrogen value chain

Photo-illustration: Freepik (bugphai)
Photo-illustration: Freepik (freepik)

The Commission has approved, under EU State aid rules, a third Important Project of Common European Interest (‘IPCEI’) to support hydrogen infrastructure. This IPCEI is expected to boost the supply of renewable hydrogen, thereby reducing dependency on natural gas and helping to achieve the objectives of the European Green Deal and the REPowerEU Plan.

The project, called “IPCEI Hy2Infra”, was jointly prepared and notified by seven Member States: France, Germany, Italy, the Netherlands, Poland, Portugal, and Slovakia.

The Member States will provide up to 6.9 billion euros in public funding, which is expected to unlock 5.4 billion euros in private investments. As part of this IPCEI, 32 companies with activities in one or more Member States, including small and medium-sized enterprises (‘SMEs’), will participate in 33 projects.

IPCEI Hy2Infra will cover a wide part of the hydrogen value chain by supporting:

  • the deployment of 3.2 GW of large-scale electrolysers to produce renewable hydrogen;
  • the deployment of new and repurposed hydrogen transmission and distribution pipelines of approximately 2,700 km;
  • the development of large-scale hydrogen storage facilities with capacity of at least 370 GWh; and
  • the construction of handling terminals and related port infrastructure for liquid organic hydrogen carriers (‘LOHC’) to handle 6,000 tonnes of hydrogen a year.

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Participants will also collaborate on interoperability and common standards to prevent barriers and facilitate future market integration. The IPCEI will support the gradual emergence of an EU-wide hydrogen infrastructure starting from different regional clusters.

Several projects are expected to be implemented in the near future, with various large-scale electrolysers expected to be operational between 2026 and 2028, and pipelines between 2027 and 2029 depending on the geographic area. The overall completion of projects is planned for 2029, with timelines varying depending on projects and companies.

IPCEI Hy2Infra complements the first and second IPCEIs on the hydrogen value chain. The Commission approved IPCEI “Hy2Tech” on 15 July 2022, which focuses on the development of hydrogen technologies for end users. IPCEI “Hy2Use” was approved on 21 September 2022 and focuses on hydrogen applications in the industrial sector. Hy2Infra concerns infrastructure investments, which are not covered by the first two IPCEIs.

DEFORESTATION CONTRIBUTES TO INCREASED MERCURY POLLUTION – AFFORESTATION REDUCES IT

Photo-illustration: Unsplash (Lightscape)
temperatura
Photo-illustration: Pixabay (Gadini)

The danger of possible contact with mercury is something we have been familiar with since childhood when using old-fashioned thermometers. However, mercury is much more present in our living environment and its toxic effects go beyond the danger of being in direct contact with it. Moreover, mercury is widely distributed in the environment, but the problem arises the moment it is released and this is something that human activities contribute to significantly. Mercury becomes particularly toxic when it reaches the aquatic environment, but its release into the atmosphere in excessive amounts is also considered to be of grave concern for the health of people and other living creatures. Consequently, the World Health Organization (WHO) classified it as one of the 10 chemicals that pose the biggest threat to health.

A new study conducted by the Massachusetts Institute of Technology (MIT) indicates that about 200 tonnes of mercury emissions each year are the result of global deforestation. If the current deforestation trend continues, researchers estimate that net mercury emissions will continue to rise.

Research has also shown that the Amazon rainforest has a significant role as a repository of mercury, with a 30 per cent share. By reducing deforestation, this type of pollution could be significantly reduced. Also, the research highlighted the possibility of reducing mercury in the environment if reforestation efforts are increased. Namely, forests can absorb mercury and increased afforestation would reduce its presence in the atmosphere. However, this method must not remain the only solution to mercury pollution.

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How does deforestation contribute to mercury emissions?

Photo-illustration: Unsplash (Lucian Dachman)

Tree leaves play a key role in absorbing mercury from the atmosphere, in a similar way they do with carbon dioxide. However, unlike carbon dioxide which is important to plants in their biological function, mercury is detrimental. It stays inside the leaf until it falls off and thus ends up on the ground. After that, the mercury is absorbed into the soil, where it remains trapped.

The re-release of mercury from the soil is greatly influenced by the sun’s rays, which is precisely the essence of the MIT research. MIT explains that the leaves of trees in dense rainforests prevent the penetration of sunlight and when deforestation occurs, the density of the crowns decreases, which allows sunlight to reach the ground and thus accelerates the process of releasing mercury from the soil.

Making an interesting comparison, deforestation is likened to a country. In this imagined form, deforestation would be the second largest emitting country after China, which emits about 500 tonnes of mercury per year.

Not all parts of the world emit the same quantity of mercury. Tropical forest areas emit more mercury, as a result of burning down forests to prepare them for agricultural activities.

How can mercury emissions be further reduced?

Photo-illustration: Unsplash (Eduardo Jaeger)

One of the main causes of the release of mercury into the atmosphere is the burning of coal, given that mercury is found in coal. This is another reason why the transition to alternative ways of producing electricity and heat is encouraged.

Also, mercury mining can be reduced if the existing mercury is recycled and reused. Even if mercury is not mined directly, it is done indirectly through gold mines.

As a heavy metal, it is found in various objects in everyday use such as compact fluorescent light bulbs, certain types of batteries, thermometers, certain types of electronic waste and others, which is why it is important to dispose of it safely.

The European Union expressed particular concern over the fact that when mercury is released into the environment, it enters the food chain, especially fish. Due to the health hazards, i.e. possible damage to the brain, lungs, kidneys and immune system, the European Union has invested significant efforts into developing laws to limit its use. For example, the use of batteries, thermometers, barometers and blood pressure measuring devices containing mercury is prohibited. Also, it is prohibited in most switches and relays found in electronic equipment. Last year, the European Commission adopted a Delegated Regulation translating the Minamata Convention on Mercury into EU law, which introduced a ban on the production, import and export of an additional eight products containing mercury.

Katarina Vuinac

THERE WON’T BE ENOUGH LITHIUM FOR EVERYONE – ARE SODIUM-ION BATTERIES THE SOLUTION?

Photo-illustration: Unsplash (newpowa)
Photo-illustration: Unsplash (karsten-wurth)

Abandoning fossil fuels is part of global efforts to produce electricity efficiently and with as little pollution as possible, which further implies the transition to renewable energy sources.

The European Union is actively working to encourage the production of green kilowatts and promote environmentally friendly vehicles. It devised a plan whereby the sale of petrol and diesel cars will be phased out of the EU market by 2035. However, solar panels, car batteries, wind turbines and similar technologies require metals such as cobalt, nickel, lithium and others, whose extraction is neither simple nor without consequences. Today, the largest deposits of these much-needed metals are mostly located in countries with economic or geopolitical problems, which makes it difficult to regulate permits, or mining takes place under difficult or illegal working conditions, such as in Africa, while at the same time, this process also leaves environmental consequences.

As the RES sector is becoming increasingly popular, the demand for the necessary components is also growing in parallel. This implies that bigger production will require more of the aforementioned materials (cobalt, lithium, nickel…) in many other locations of the world. As the demand increases, there is a fear of inadequate supply, because these resources are limited and large deposits may be exhausted as a result of future expansion. As scientists from the Chalmers University of Technology in Sweden explain, the current deposits cannot satisfy the mentioned future expansion, especially when it comes to electric cars and the growing number of car manufacturers moving to mass production.

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We need to search for new technologies, because lithium sources may reach the point of exhaustion, while the market and the demand for raw materials continue to grow.

Photo-illustration: Unsplash (markus-spiske)

Chalmers’ research team embarked on testing sodium-ion batteries, which, as the name says, mostly rely on sodium, which is much more common than lithium. When examining the density, life span, environmental aspect and other characteristics, they concluded that sodium-ion batteries are better in terms of supply due to their accessibility, but the environmental aspect and climate.

Overall, sodium-ion batteries use sodium, an element that is much more abundant than lithium because it can also be extracted from sea salt. This makes them potentially cheaper, more environmentally friendly and more available. Lithium-ion batteries, on the other hand, have a higher density and therefore store larger amounts of energy in a smaller space compared to sodium-ion batteries. This makes them ideal for applications where space and weight are limited, such as electric vehicles. Sodium-ion batteries can operate over a wider range of temperatures and can therefore withstand more severe weather conditions, while lithium-ion batteries are known to have altered performance during cold days or extreme heat, which results in a much shorter drive as the car uses more energy when it’s very cold outside.

Technology is changing fast though. The development of sodium-ion batteries and their use for energy storage in the power grid are imminent. With further development, this battery could also be used in electric cars, given the scarcity of lithium deposits.

Milica Vučković

SUSTAINABLE WASTE MANAGEMENT WITH GREEN ENERGY

Photo-illustration: Unsplash (nuno-marques)
Photo-illustration: Pixabay (Michael_Pointner)

Achieving a sustainable future requires sweeping changes, making every sector greener. The generation of electricity from clean sources is one of the most significant changes required, starting with small energy consumers and moving to large ones. The public utility company Pirot Regional Landfill is an example of a large consumer, considering that the waste separation line requires significant amounts of electricity. Thanks to the decision to build a solar power plant on the roof of this facility, waste management in Pirot will become a more sustainable process. Designing was entrusted to the CEEFOR company, which has many years of experience in sustainable development, energy efficiency and design services in renewable energy sources. We talked about the project and the importance of its realization with Bojan Stević, a graduate mechanical engineer who leads the entire project.

The RD Pirot solar power plant with an installed capacity of 150 kW is planned to be built on the roof of the building of this public company, which covers an area of 1,200 m2. The idea is that the power plant uses the produced electricity to power its own daily needs until the moment of acquiring the status of a prosumer, after which the produced surplus will be handed over to the distribution system.

– The first information that we needed and that we received from the management of PUC Pirot Regional Landfill is the current consumption and some projected consumption of the plant, with which we can calculate what their needs are and concerning that, we design the solar power plant – said Stević.

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The original plan included the current panels of 410 Wp individual power at that time, with the installation of 440 solar panels, 348 on one facility and 90 on the other. One of the best solar modules on our market, Luxor Solar 545 Wp, was chosen for this solar power plant. Also, the solar power plant will contain eight inverters manufactured by Fronius. One of the best solutions from K2 Systems was chosen for the substructure. As this solar power plant requires the expansion of the electricity connection, it took a little more time to collect the necessary documentation and approvals.

Photo: EP (Milica Radičević)

Given that the PUC Pirot Regional Landfill facility is located on the international corridor, this public company plans to connect a charger for electric cars, which will come with a smart canopy.

The start of the construction of the solar power plant RD Pirot is planned in the winter period, that is, at the end of this year or the beginning of the next year, so that the work will be completed in the spring of 2024 and in this way the full potential of sunlight will be used by the end of that year.

The Center for Energy Efficiency and Sustainable Development (CEEFOR) has been successfully operating in the field of sustainable project development and energy efficiency in the Balkan region for thirteen years. It offers its clients consulting and design services in renewable energy sources. The company’s professional team is ready to respond to all client requests and answer all questions. A long list of satisfied clients is the best indicator of the expertise and dedicated work of the company.

Prepared by: Katarina Vuinac

Read the story in the new issue of the Energy portal Magazine CIRCULAR ECONOMY

THE UNTAPPED POTENTIAL OF ENVIRONMENTALLY FRIENDLY HEMP PELLET

Photo-illustration: Pixabay
Photo-illustration: Unsplash (NickyPe)

Suitable climatic conditions and quality land help our country’s potential for the cultivation of industrial hemp. These are not just assumptions but proven facts. The former Yugoslavia was its biggest exporter of hemp in Europe in the mid-20th century. We spoke with Hadži Zoran Jovanović, a hemp expert, about this plant’s importance and benefits for the environment and energy.

Fifteen years ago, together with his colleague Dr Maja Timotijević, Zoran instigated the return of industrial hemp to Serbian fields and its processing. The two of them received support from the Development Agency of Serbia and the Innovation Fund through the Smart Start grant. What followed was the formation of a startup called ReHemp d.o.o. Novi Sad, whose name is translated into Serbian, means — hemp again.

Speaking about hemp’s advantages, in the period from April to August, which is the period between planting to harvesting hemp and the care which does not require the use of chemicals during the noted period, up to 10 tons of stalk-biomass can be generated, which is a result unique only to hemp and no other plant species. Growing this plant reduces the need for deforestation because it has a significantly higher amount of cellulose than trees. At the same time, it also improves the health of the soil, which it can clean even from radiation. Considering waste pollution, hemp can replace plastic in all aspects and in terms of air pollution; during its growth, hemp absorbs up to seven times more CO2 than other plants.

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Photo-illustration: Unsplash (Stephane Juban)

There is a benefit for factories, too, with the help of environmental vouchers. Namely, every factory that emits CO2 during its production process pays taxes. However, if the factory proves that it financed the planting of industrial hemp in certain areas by calculating the quantity of carbon dioxide the planted hemp absorbs and if this amount is equivalent to the quantity of carbon dioxide the factory emits, the company is exempt from paying taxes. Hemp’s benefits are multiple; as Hadži Zoran Jovanović says, this is a miraculous plant that nourishes, clothes, heals and warms. Looking at problems in the energy sector, such as carbon dioxide emissions, unsafe sources of oil and gas and imported energy harmful to the environment, Mr Jovanović, an energy expert, started researching to make the most of this plant’s potential. As he explains, about 30 products can be made by processing hemp flower and seed, while 70,000 products can be produced by processing the stem. However, since no one has seriously dealt with hemp, the stems only represented a problem for industrial hemp breeders.

That is why Mr Jovanović started researching how to transform this part of the plant from a problem to a benefit, and he found that pellets can be produced from the stem. The Republic of Serbia’s Intellectual Property Office protects hemp pellets as a small patent. The importance of the pellet obtained in this way lies in its price cost as much as beech pellets but have 20 per cent higher caloric value. The production process is almost identical to that of other types of pellets. The only difference is that the hemp stem must undergo decortication, that is, the separation of the fiber from the pods. Burning the pellets obtained in this way produces less than two per cent of ash remains, which makes hemp pellets a fuel with the highest degree of utilization — 98 per cent.

Prepared by: Katarina Vuinac

Read the story in the new issue of the Energy portal Magazine CIRCULAR ECONOMY

GERMANY AND ALGERIA OPEN A NEW CHAPTER IN THE PRODUCTION OF GREEN HYDROGEN

Photo-illustration: Freepik (freepik)
Photo-illustration: Freepik (freepik)

Germany and Algeria will form a bilateral hydrogen working group, in a bid to cooperate on the production of green hydrogen, which is part of their energy partnership. On the occasion, Dr. Robert Habeck, German Federal Minister for Economy and Climate Protection and Mohamed Arkab, Algerian Minister of Energy and Mining, signed a declaration of intent in Algeria.

In terms of cooperation, Algeria will receive support in the establishment of hydrogen infrastructure and production, according to the website of the German Federal Ministry for Economic Affairs and Climate Protection (BMWK). Furthermore, a hydrogen pilot plant will be built.

According to the German minister, Germany and Algeria have maintained a close energy partnership since 2015 and now both countries want to expand the partnership, while encouraging Algeria to produce more green hydrogen in the future, but also to invest more in solar and wind energy and that way create additional value.

Germany wants to support Algeria with know-how and technical expertise and Germany and the European Union are also available as potential buyers of green hydrogen. What needs to be done as soon as possible is to fulfil technical and economic prerequisites for hydrogen deliveries between the two countries.

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While the Algerian-German hydrogen task force aims to promote the framework agreement on the production, storage and transport of green hydrogen and its derivatives, the bilateral cooperation aims to support private sector investments in both countries, in order to contribute to energy security in Europe, simultaneously with the implementation of the Paris Agreement.

According to the Ministry’s website, the signing of the declaration of intent followed a high-level meeting of government ministers, business people and experts, who had previously discussed the potential and challenges of expanding renewable energy sources, hydrogen, financing, transport and uptake at a round table discussion.

Representatives of the European Commission, Italy, Austria and Tunisia, who support the creation of the “H2 southern corridor”, were invited to attend the meeting. The corridor will transform and expand the existing pipeline for renewable hydrogen that stretches from Algeria through Tunisia, Italy and Austria to southern Germany.

In the coming period, Algeria will strive to become a significant producer of green hydrogen and supply 10 per cent of the EU’s needs by 2040. In this way, this country could improve its economy and create new jobs, while at the same time, gradually making the transition of the energy sector by reducing the use of gas.

Energy portal

DIGITALIZATION AS A WAY TO IMPROVE ENERGY EFFICIENCY IN BUILDINGS

Photo-illustration: Unsplash (james-yarema)
Photo: E Co.

Digital technologies have become part of a large number of investments in infrastructure and energy projects in developing countries. Their extensive application in cities to increase efficiency, optimization, and improvement of health, comfort, and social circumstances leads to achieving a high level of sustainability. Recognizing the need to follow the current moment, the EBRD teams are increasingly incorporating digitalization into assessing their investment justifications. The project to which the following paragraphs are dedicated brings a paradigm shift in dealing with digitalization as it shows how to apply digital technologies in all types of buildings. The EBRD team that worked on this project included the bank’s experts in energy and district heating. At the same time, the external consulting team of E Co. from the United Kingdom and the German Dornier Group consisted of over 10 experts from the USA, Germany, Serbia, Croatia, Italy, and Argentina. From July 2022 to June 2023, this multidisciplinary team created a quality basis for a step forward in the digital transition of all 38 countries in which it operates.

Many sectors have made significant progress in digitalization in recent years. They are rapidly being joined by the building and construction sector, which is increasingly benefiting from improved energy efficiency and resilience and reduced costs. In addition, there are increasing global demands to reduce emissions of greenhouse gases (GHG) and harmful gases, and the demands of building users for safer and healthier living and working conditions. In earlier years, digitalization was characterized by high initial investments, mitigated in recent years, leading to greater attractiveness and profitability of numerous digital solutions.

Digital services and solutions are characterized by adaptability to the specific needs and requirements of users. Through the intelligent analysis of data from different domains, users and building owners are enabled to have the right information in a real environment as a basis for making quality decisions.

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Buildings become smart by implementing smart digital solutions, i.e. by various devices and sensors that provide and process information and perform actions based on the received information. Smart buildings are equipped with intelligent systems that can be classified into management services and support services. The application of various smart environment applications has spread to complex buildings such as hospitals, office buildings, and educational and sports buildings, where sensors provide information to management, staff, and users.

The goal of applying digital solutions in buildings is the digital transformation of cities and the creation of smart cities that connect the environment, economy and mobility. This goal is achieved by combining and interacting the following aspects:

॰ Optimization of natural resources through environmental protection, energy efficiency and waste management,

॰ Mobility through public transport efficiency, traffic management and parking spaces management,

॰ Informing citizens, inclusive society, citizens making decisions, e-learning, and

॰ Quality of life of citizens, safety, and management of natural disasters.

Some leading international financial institutions recognize digitalization as one of the main directions of investment in the next medium-term strategies, considering the interaction of digitalization with all other investment areas to achieve social, ecological, and economic sustainability. The EBRD has particularly made progress in this regard, placing digitalization as one of the three main topics for the current period.

Source: E Co.

Read the story in the new issue of the Energy portal Magazine  CIRCULAR ECONOMY

WOODEN WIND TURBINE AS A MORE SUSTAINABLE FUTURE OF WIND ENERGY

Photo-illustration: Freepik (wirestock)
Photo-illustration: Unsplash (Jason Blackeye)

Most people are aware that renewable energy plants are being developed to achieve decarbonisation goals, but their energy production does produce emissions. One company has come up with a way to make wind turbines an even greener technology. Believe it or not, instead of using steel and concrete, they are making wind turbines out of wood and claim they could become an important part of the next generation of wind energy.

The wooden construction is based on a tower made from laminated wood. In order to keep moisture out of the tower, the wood is coated with a thick waterproof paint. Currently, such wind turbines are produced for land use, but with additional improvements, they could be installed in the water in the future.

Several questions could be raised regarding these wooden structures including how safe are they from frequent wildfires? The solution to this problem lies in the very density of the logs because the tower is made from solid wood and it is very difficult to catch fire. Direct exposure to fire would cause charring and, as stated, at a very controlled rate. On the other hand, steel becomes soft when exposed to high temperatures, which is why a wooden structure could also have better structural strength.

Currently, the height of the towers ranges between 150 and 200 metres, but they have the potential to become even higher.

An even greener technology

How much greener these wind turbines are compared to the usual steel ones is shown by the data on carbon dioxide emissions during their lifetime. Namely, the emissions of a typical wind turbine with a height of 110 metres amount to about 1,250 tonnes. On the other hand, wooden ones emit up to 90 per cent less.

It is also important to note the sustainable harvesting of the trees used to make the towers. The trees for these purposes are sourced from sustainably managed forests that are certified for the reforestation programme.

Certain renewable energy sources have been criticized because nobody has figured out as yet how to sustainably manage them once they become waste. The circular economy has drawn a lot of attention in recent years, which is why more work is being done on resolving the mentioned problem. Thanks to the wooden construction, which allows the tower to be dismantled more easily, this material can be used subsequently in the construction industry as beams of high quality and strength.

Honestly, I was sceptical when I came across the information about wooden wind turbines, but with all the existing performances, which will be further improved in the future, this green solution could become an integral part of wind energy’s future.

Katarina Vuinac

INNOVATIVE SOLUTIONS LEAD TO THE CIRCULAR ECONOMY

Photo: ABB
Photo: ABB

Modern times have brought us new technologies and innovations that make our daily lives easier. The constant growth and progress of all spheres of life require the use of natural resources that are mercilessly consumed, mostly through the system of the linear economy. This model is based on the principle of take-make-use-throw and has contributed significantly to the accelerated development of industry in the 20th century. Applying this model has led to a harmful impact on the environment and global climate change, the solutions of which we are intensively searching for. Applying the circular economy model, a regenerative approach to production can help in this. It practically means that end-of-life products are either returned, through modular design, to production processes or have the possibility of being decomposed so that they do not harm the environment. Technological production processes applied in the circular economy are based on clean technologies. Namely, materials already in use (recycled) are used, and the product obtained after use is used again in the production process instead of going to waste.

The production process, according to the circular economy model, is rounded into a whole, the so-called waste-free production. Although all this seems easy to implement, only 7.2 per cent of products are currently used worldwide and are returned to production at the end of their life. The principles of the circular economy are applicable in almost all business segments and can significantly improve production processes.

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Robots for a longer working life

Photo: ABB

The segment in which this business model can be applied in the long term is certainly the extension of the service life of production equipment and machines. The company ABB extends the working life of equipment and devices with its innovative solutions in production processes. In the late 1960s and early 1970s, ABB was the first in the world to promote an industrial painting robot and a robot fully controlled by a microprocessor.

Today, their robots are playing their part in solving the world’s sustainability challenges and helping companies in the process of implementing the circular economy. Thanks to solutions that extend the working life of robots and detailed analysis by ABB experts, the causes of overloads are found, and maintenance strategies are recommended. In the industry, thanks to this service, a large car manufacturer identified the robots that were the most stressed and with preventive maintenance actions, as many as 280 robots will continue to work and be in operation until 2035, despite already accumulated 25,000 working hours. Over the last two decades, ABB’s expert teams have upgraded thousands of robots, significantly extending their working life and enabling a more sustainable way of working, which fits into the segments of the circular economy.

Prepared by: Milica Radičević

Read the story in the new issue of the Energy portal Magazine CIRCULAR ECONOMY

JAPAN – WHAT HAPPENS WHEN THE DEVELOPMENT OF CHARGERS IS OUT OF SYNC WITH THE NUMBER OF E-VEHICLES?

Photo-illustration: Unsplash (Jezael Melgoza)
Photo-illustration: Unsplash (CHUTTERSNAP)

As Japan aims to become climate-neutral by 2050, the country’s transport sector should undergo major changes to achieve the goal. A few years ago, Japan set an ambitious goal to eliminate the sales of diesel and petrol cars by 2035, the same as the European Union. It remains to be seen whether such a goal can change the climate situation in the country.

 

Japan’s economy relies heavily on the automotive industry and Japan is one of the leading countries in this field. However, it should be noted that the situation is much better when it comes to hybrid vehicles in comparison to electric vehicles.

 

Some time ago, electric cars in this country outnumbered the number of available charging stations. Due to subsidies, in the middle of the last decade, the number of chargers went up, but a few years ago, they also started to shut down. The service life of public chargers is between 5 and 10 years and as they developed too quickly following the production of e-vehicles, at one point they either became part of the outdated infrastructure or were shut down because they were unprofitable, depending on which part of the country we are talking about.

 

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Back in the day, the local governments recognized the potential of electrifying traffic relatively early and encouraged the installation of charging stations, as they were quite optimistic with their predictions. However, it took drivers a longer time to start using e-vehicles. 

Photo-illustration: Unsplash (CHUTTERSNAP)

It is interesting to note that today the situation is the opposite – there is a lack of chargers compared to the number of electric vehicles. Chargers are not readily available, their power is inadequate and there is an insufficient number of charging points. Appropriate infrastructure is an important factor when deciding to buy an electric vehicle.  

 

To rectify this, Japan revised its original goal of 150,000 chargers, doubling it to 300,000 by the end of this decade. Japan has a population of over 125 million and the country has set a goal of having 400,000 chargers available by 2030.

 

However, even if all citizens were to switch to electric vehicles, there is still uncertainty whether that would solve the pollution issue given that Japan relies mostly on fossil fuels for functioning.

 

Milica Vučković