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International Projects

Healthcare and Medicine

Luxembourg Agency for the Development Co-operation (Lux-Development S.A.) Mongolia

Cardiology, cardiac surgery and telemedicine in Mongolia

Education and Training

Technical Education Development Agency (ADET) Benin

Construction program for the School of Tourism, Hotel and Catering Trades

Education and Training

Luxembourg Agency for the Development Co-operation (Lux-Development S.A.) Benin

Agricultural and Rural Training Support Program (ProFAR 2)


Luxembourg Agency for the Development Co-operation (Lux-Development S.A.) Luxembourg

Support project for the joint initiative “Transfo’publique in West Africa” (TPAO

Feature & Services

Procurement News

Coalition game theory to improve P2P trading in energy communities

An international research group has used a newly designed coalitional gaming system to ensure economic equity among members of energy communities. The game system takes into account different types of prosumers that depend on autonomous systems and combinations of solar energy and storage. An international group of scientists led by Sichuan Normal University, China, has developed a novel coalitional gaming system that maximizes the collective profit of prosumers in a community-scale peer-to-peer (P2P) energy trading market. A coalitional game is part of game theory, in which players form coalitions to achieve common goals and greater benefits. “The methods presented in some publications are based on the premise that renewable energy and load can be accurately predicted, and this does not reflect the stochastic nature of real-world prosumer systems,” the researchers say. “It is necessary and important to develop new collational game systems and algorithms that can be applied to the stochastic environment of P2P energy trading with the participation of different types of prosumers.” To solve this problem, scholars have introduced coalition rules into the game. One ensures that prosumers have surplus energy to sell, meaning that their energy consumption must not exceed their production capacity. The second rule ensures that prosumers assume that their energy production is the best possible, so that shortages and cuts do not occur. To enforce these rules, participating prosumers may be liable for financial penalties and the loss of collective reimbursements for losses. The game system takes into account three types of prosumers: those who only have a renewable energy source, such as a photovoltaic system or a wind turbine; participants with battery energy storage systems (BESS); and those that depend on both photovoltaic energy and batteries. The game also includes system size and prosumer load, among other parameters. “In the methodological part of the work, a strict theoretical analysis has been provided to demonstrate the effectiveness of the proposed system in terms of: (1) guaranteeing economic equity among coalition members; and (2) ensure that each coalition member can be more profitable in P2P energy trading compared to the situation where it does not join the coalition,” the researchers explain. After providing a China

Global polysilicon prices steady, Chinese polysilicon falls on weak demand

In a new weekly update for pv magazine , OPIS, a Dow Jones company, offers a quick look at the main price trends in the global PV industry. The Global Polysilicon Marker (GPM), the OPIS benchmark for polysilicon outside of China, was valued this week at $22.90/kg, unchanged from the previous week, reflecting stable market fundamentals. Recent discussions have pointed to a possible slowdown in global polysilicon sales, attributed to changes in international trade policies. An insider said the USs June reinstatement of the Section 201 tariff on bifacial modules from four Southeast Asian countries will make it difficult to export Southeast Asian solar products to the US market. Additionally, the US Department of Commerce (DOC) has initiated investigations into imports of solar cells and modules from these countries under anti-dumping and countervailing duty (AD/CVD) regulations. , which has caused a slowdown in commercial activities in the region. Consequently, this has led to a significant slowdown in the rate of operation of Southeast Asias production capacity. “As a result, the pace of sales of polysilicon manufactured outside of China, destined primarily for Southeast Asia, is expected to slow,” the source added. A source from a global promoter anticipates that this situation will worsen in the second half of this year. “There will not be much demand for modules from the US in the second half of 2024 because the modules needed for installation throughout 2024 have already entered the US before the first quarter of 2024,” he added. “We may have to wait until 2025 for the sales situation of global polysilicon suppliers to recover.” Therefore, the source predicts that global polysilicon could build up some stocks in the second half of 2024, which could lead to a drop in prices. Another source familiar with the global polysilicon market maintains a contrary view, stating that global polysilicon prices are ultimately tied to the prices of the final products. Despite recent reports of US module spot prices rising to $0.4 per W, PV power generation remains the lowest levelized cost of electricity (LCOE) among electricity sources available in the US Therefore, there is still the possibility of further price increases for modules in the country, which, in turn, could help maintain the premium to global polysilicon prices. Ch Various Countries

First attempt to build a perovskite and antimony selenide tandem solar cell with an efficiency of 20.58%

Chinese scientists have for the first time built a four-terminal tandem perovskite cell with an upper perovskite device with an efficiency of 17.88% and a lower antimony selenide cell with an efficiency of 7.85%. Key features of the tandem cell are the transparent conductive electrode used to enhance the spectral response of the upper cell and the “double” electron transport layer of the antimony selenide cell. A group of researchers from the University of Science and Technology of China has fabricated a four-terminal (4T) tandem solar cell based on an upper cell that relies on a perovskite absorber and a lower device that uses an antimony selenide absorber. . “Antimony selenide is a suitable material for tandem solar cells. “However, due to the paucity of reports on tandem solar cells using it as a bottom cell, little attention has been paid to its application.” Antimony selenide (Sb2Se3) is a p-type inorganic semiconductor with a one-dimensional crystal structure and a direct bandgap in the range of 1.2 eV to 1.9 eV. It has excellent optoelectronic properties. In recent years, it has also been used as an absorbent material to build solar cells. The efficiencies achieved by such devices have reached between 5% and 9.2%. These efficiency levels remain far behind those of other thin film technologies, such as cells based on copper, indium, gallium and selenide (CISG), cadmium telluride (CdTe), kesterite (CZTSSe) and amorphous silicon (a -Yeah). This technological gap could be due to the fact that the scientific community is largely unaware of characteristics such as mobility, carrier lifetime, diffusion length, defect depth, defect density and the band tail of the technology. of Sb2Se3 cells, since to date not many devices of this type have been manufactured. The Chinese group presented its tandem cell in the study “ Sb 2 Se 3 as a bottom cell material for efficient perovskite/Sb 2 Se 3 tandem solar cells ” ), published in Energy Materials and Devices , and stated that the key features of the device are the transparent conductive electrode they used to improve the spectral response of the upper cell and the “double” electron transport layer (ETL) of the upper cell. antimony selenide. The researchers designed the top cell with an f-doped tin dioxide (FTO) substrate, a tin oxide (SnO2) ETL, a perovskite absorber, a Spir China

Latin American energytechs have received 750 million dollars in investments since 2021

According to a Distrito study, Brazil concentrates investments that represent 83.5 percent of the total destined for Latin America, more than half of the 347 companies in the segment are linked to renewable energies and the Brazilian Órigo is the energytech that has made the most investments. received in the region. Startups in the energy sector in Latin America received more than $750 million in 76 rounds between 2021 and April 2024, according to the EnergyTech Report 2024 carried out by Distrito, the leading platform for emerging technologies in the region. With a share of 80%, Brazil concentrates investments in the sector, with a total volume of 605.9 million dollars in 61 operations. The search for cleaner forms of energy, due to climate change, has stimulated the creation of start-ups in the sector. The majority of energytechs in Latin America, 55% of the 347 mapped, are linked to renewable energies. These companies work on solutions for the installation and production of solar panels or credits for the purchase of photovoltaic systems. Energy distribution is in second place, with 130 startups. This includes solutions to save energy and monitor consumption data. “The energytech segment is one of the most dynamic in the innovation ecosystem. Regulatory changes, such as the expansion of the Free Energy Market, the growing importance of the climate agenda and the presence of corporate capital are stimulating the creation of solutions to democratize access to clean forms of energy, optimize distribution and technologies to electrify fleets. From the figures we have seen so far, this year could be one of the best for the segment,” says Gustavo Gierun, CEO and co-founder of Distrito. From January to April, Latin American energytechs received 113 million dollars in seven operations. The financial volume is more than half of what was invested in the segment last year, when contributions totaled $213 million in 17 rounds. The year with the highest investment volume in the sector was 2022, with 294 million dollars raised and 28 investments. The Brazilian Órigo, which has solar parks in several states, is the company that has received the most financing in the region. Of the five largest investment rounds in Latin America, three came from Órigo, for a total of $346.9 million. The start-up alone received almost half of the fun Brazil

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