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In a context of energy transition, lithium has become critical to the development of low-carbon mobility. But lithium supply is a key issue. To date, lithium production is highly concentrated in three non-European countries: Australia, Chile and China, which also manufactures 79% of batteries.
Global demand for lithium has doubled over the last ten years. Driven by the transition to electric vehicles, global consumption of this metal is expected to increase 42-fold by 2040 compared with 2020 (International Energy Agency).
But lithium supply is a key issue. To date, lithium production is highly concentrated in three non-European countries: Australia, Chile and China, which also manufactures 79% of batteries. The current geopolitical crises show that it is risky to depend solely on foreign sources of supply for critical materials.
China Southern Power Grid signed a memorandum with Kazakh partners to jointly develop projects in high-voltage direct current (HVDC) transmission, digital energy solutions, and pumped-hydro energy storage. Another memorandum with Huawei Kazakhstan outlined cooperation in digital transformation and cybersecurity across the energy sector.
Nan Yi, chairman of the Chinese energy company, revealed that since 2015, the company has been investing in new energy projects in Kazakhstan, including photovoltaic and wind energy stations.
The Kapshagay photovoltaic power station, one of the largest single solar power projects in the Central Asian country, is a part of the China-Kazakhstan green energy cooperation initiative, jointly invested in and constructed by the Chinese company Universal Energy and Kazakh counterparts.
Akkenzhenov emphasized Kazakhstan’s evolving role from resource exporter to energy technology hub, noting a significant shift in the structure of cooperation with China. “Our relations have gone beyond raw material exports. We are building a joint, technologically rich ecosystem.
Solar panels are wired in series when you want to increase the total voltage in a system. In this configuration, the voltage outputs of all panels add up while the current remains low on a level of what a single solar panel can provide. Connecting solar panels in series increases the total voltage in a system way over the safe level.
The number of solar panels you can safely connect in series depends on the voltage limits of your MPPT charge controller or hybrid inverter. There are 2 key boundaries to consider: To ensure your system starts charging efficiently, the series voltage must reach at least the MPPT’s start voltage.
So, if you connect two solar panels with a rated voltage of 40 volts and a rated amperage of 5 amps in series, the voltage of the series would be 80 volts, while the amperage would remain at 5 amps. Putting panels in series makes it so the voltage of the array increases.
Solar panel series and parallel connection diagram with four panels. Showing positive to negative wiring diagram for series. It means, for a balanced and efficient 24V solar system, you need at least 4 panels, configured as 2S2P (2 panels in Series, then 2 such strings in Parallel).
Thin-film solar modules transform the renewable energy landscape with their lightweight design, flexibility, and cost-effective production. Unlike traditional silicon-based photovoltaics, thin-film technology enables solar energy harvesting on unconventional surfaces, from building facades to wearable electronics.
The most commonly used ones for thin-film solar technology are cadmium telluride (CdTe), copper indium gallium selenide (CIGS), amorphous silicon (a-Si), and gallium arsenide (GaAs). The efficiency, weight, and other aspects may vary between materials, but the generation process is the same.
Thin film solar cells are favorable because of their minimum material usage and rising efficiencies. The three major thin film solar cell technologies include amorphous silicon (α-Si), copper indium gallium selenide (CIGS), and cadmium telluride (CdTe).
Front. Energy Res., 15 June 2025 Thin-film photovoltaics, particularly those based on perovskite materials, are revolutionizing solar energy research through rapid efficiency gains, innovative device architectures, and advanced modeling techniques.
