China has completed construction of its first copper indium gallium selenide (CIGS) Integrated Solar Building in the province of Guangdong, according to Yicai Global on November 8. State-owned mining and energy firm China Energy Investment has full ownership of the core technologies used by the building to generate solar power. This new solar building has an annual energy capacity of 123m kilowatt-hours.
Experts view CIGS photovoltaic cells as the next generation of thin-film solar cells, an essential component in the application of solar energy. Compared to typical crystalline silicon cells, CIGS components feature low power attenuation, a longer lifecycle, and satisfactory performance in low light. The investment in CIGS cells by China Energy Investment is an example of China's increasing research and investment in the new energy sector. In 2017, China invested a total of USD126.6bn into renewable energy, accounting for more than half of the world's total investment. According to the company, the building will also be used for developing fusion technologies and power station applications. Noticeably, the building can generate its own electricity, which can potentially free up land used for power stations and energy storage.