23 February, the relevant parties predicted that the scale of new photovoltaic installations in 2022 may increase to more than 75GW, about 75-90GW. The value compared to the National Energy Board data – 2021 national PV new installations of about 55GW, an increase of 36%-64%. At the same time is expected to 2022-2025, China’s annual average new PV installation will reach 83-99GW. 2021, according to the Ministry of Industry and Information Technology data, China’s PV polysilicon, wafer, cell, module production reached 505,000 tons, 227GW, 198GW, 182GW, an increase of 27.5%, 40.6%, 46.9%, 46.1%. The annual export of PV products exceeded US$28.4 billion.

According to the latest research report of CITIC Capital, the domestic PV installation in January 2022 exceeded expectations, the national new PV installation of more than 7GW, an increase of 200% year-on-year. Among them, distributed PV new installed 4.5GW, up 250% year-on-year; centralized PV new installed 2.5GW, up 150% year-on-year. Upstream silicon, wafers, downstream batteries, modules, and inverters, auxiliary materials, all parts of the industry chain is generally full of orders, the start rate is not down but up. This year, the traditional off-season may not be “light”.

At this point, we expect the people of Ukraine to protect themselves and their families, to spend this special moment peacefully, and to return or find a peaceful home as soon as possible.

First, all the venues have achieved green power supply. The Zhangbei flexible DC power grid pilot demonstration project will be put into operation in 2020 to transmit renewable energy from Zhangjiakou area to Beijing in a safe and efficient manner, fully meeting the electricity demand of the Winter Olympic venues in Beijing and Zhangjiakou area. The establishment of cross-regional green power trading mechanism, through the green power trading platform, will achieve 100% use of green power in all venues at the time of the tournament.

Second, all venues will meet green building standards. All new indoor venues have reached the three-star green building standard, and existing indoor venues have reached the two-star green building standard through energy-saving renovation. The innovative organization has formulated the “Green Snow Sports Venue Evaluation Standard”, and all the new snow sports venues of the Beijing Winter Olympics meet the standard. At the same time, the Beijing Winter Olympics used carbon dioxide refrigerant with a global warming potential (GWP) of 1 and ozone depletion potential (ODP) of 0 in four ice venues, which is the first time this technology is used in the Winter Olympics.

Third, to build a low-carbon transportation system during the games. According to the principle of “using electricity in the plains and hydrogen in the mountains”, electric vehicles and hydrogen fuel cell vehicles were promoted in each competition area. At the same time, the “Traffic Resource Management System” was built to realize real-time monitoring and unified command of traffic operation during the Beijing Winter Olympic Games, which greatly improved traffic organization and operation efficiency during the event.

Fourth, the Beijing Winter Olympic Organizing Committee took the lead in demonstrating. The Beijing Winter Olympic Organizing Committee has moved into the Shougang Industrial Theme Park, comprehensively utilizing and transforming the waste factory buildings, making full use of photovoltaic power generation, solar lighting, rainwater collection and utilization technologies, and building a green and high-standard Shougang office area for the Winter Olympic Organizing Committee, which not only meets the office needs of the Winter Olympic Organizing Committee, but also plays a role in promoting the transformation and development of Shougang.

Fifth, the two governments donated forestry carbon sinks. The Beijing Municipal Government and Zhangjiakou Municipal Government completed 710,000 mu of new round of one million mu afforestation and greening project and 500,000 mu of Beijing-Hebei ecological water source protection forest construction project respectively, and commissioned professional institutions to complete the monitoring and certification of the corresponding carbon sinks, with certified carbon sinks of 530,000 tons of carbon dioxide equivalent and 570,000 tons of carbon dioxide equivalent respectively. The Beijing Municipal Government and the Hebei Provincial Government donated all the above carbon sinks to the Beijing Winter Olympic Organizing Committee free of charge.

Sixth, enterprises sponsored the certified carbon emission reductions. Three official partners of the Beijing Winter Olympic Games, including PetroChina, State Grid and Three Gorges Group, actively supported the carbon neutral work of the Beijing Winter Olympic Games by sponsoring 200,000 tons of carbon dioxide equivalent carbon sinks to the Beijing Winter Olympic Organizing Committee in the form of certified carbon emission reductions.

In short, through the joint efforts of all parties, all carbon emissions of the Beijing Winter Olympic Games will be neutralized, and the goal of “holding a carbon neutral Winter Olympic Games” will be achieved as scheduled.

There is a saying in the north that “the spoon is big, but the bowl is accurate”, which means that the bowl is only so big, and it can’t hold more rice. In fact, the same is true for inverter module configuration. For example, the maximum output power of Shengnengjie SE-5kw inverter is 5.5KVA, even if 6kw of power is input on the input side, its output will not reach 6kw, but only 5.5kw at most, which means the output power is limited.

Considering the impact of system loss, we usually recommend different over-provisioning ratio in different areas. Because, if the inverter over allocation is too high, it will not only waste the system cost, but also make the inverter overload for a long time, resulting in lower service life.