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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.
A normal solar power system for an average single-family home in Switzerland costs around CHF 15,000 after subsidies and tax savings. The higher the self-consumption and the proportion of solar energy produced in the total energy requirements, the faster the solar system pays for itself.
On February 1, 2023, Switzerland held its first auction for one-off payments for large photovoltaic (PV) systems. 94 applicants received payments ranging from CHF 360 to CHF 640 per kilowatt (kW), supporting a total capacity of 35 MW. In 2021, Switzerland's photovoltaic (PV) installations increased to 685 MWp from 475 MWp in 2020.
In 2022, Switzerland derived 6% of its electricity from solar power. Studies show that installing solar panels on mountaintops in the Swiss Alps could produce at least 16 terawatt-hours (TWh) a year, approaching half of the nation's 2050 solar energy target.
Installing solar panels on a multi-family home with nine residents spread across four apartments and a heat pump pays off in almost all Swiss cities and communes. The median lies at a return of 10.5 percent. On average, 63 percent of the solar power generated is consumed at home.
Lithium-ion batteries (LIBs) and hydrogen (H 2) are promising technologies for short- and long-duration energy storage, respectively. A hybrid LIB-H 2 energy storage system could thus offer a more cost-effective and reliable solution to balancing demand in renewable microgrids.
Battery energy-storage systems typically include batteries, battery-management systems, power-conversion systems and energy-management systems 21 (Fig. 2b).
Compared to Just LIB or Just H2, the hybrid system provided significant cost reductions (see Fig. 5). Relying on only LIB for energy storage ($74.8 million) was more expensive than relying on only H 2 ($59.2 million), and significantly more expensive than the hybrid case ($43.3 million).
The rise in renewable energy utilization is increasing demand for battery energy-storage technologies (BESTs). BESTs based on lithium-ion batteries are being developed and deployed. However, this technology alone does not meet all the requirements for grid-scale energy storage.
