(250515) -- SHIJIAZHUANG, May 15, 2025 (Xinhua) -- An aerial drone photo taken on May 14, 2025 shows rooftop photovoltaic devices at a modern agriculture company in Yuanshi County, north China's Hebei Province. In recent years, Yuanshi County has encouraged local companies to set up photovoltaic power generation devices on their roofs, aiming to promote the development of green economy and to reduce their management cost. These rooftop devices now boast a combined power generating capacity of 29.49 megawatt connected to the power grid. (Xinhua/Mu Yu)