Vietnam Electricity Group (EVN) has just proposed to the Ministry of Industry and Trade to supplement regulations on administrative sanctions for organizations and individuals developing self-produced and self-consumed solar power without registration, depending on the severity of the violation.
According to Mr. Nguyen Quoc Dung - Head of EVN Group's Business Department, rooftop solar power is associated with strict technical requirements in operating the power grid. EVN when developing a power supply plan, whether long-term or short-term, is based on two basic factors: load forecast and resource preparation plan.
"If we do not have a firm grasp of the amount of rooftop solar power participating in the system, the forecast of the load will be inaccurate. At that time, during times without sunlight, the power grid is forced to bear all the load, leading to the risk of lack of source preparation, causing pressure on both transmission, distribution and downtime. This can lead to negative consequences for the safe and stable operation of the power system," said Mr. Dung.
Sharing more difficulties in data issues, EVN representative said that although the installed rooftop solar power capacity has reached about 1,300 MW from 2020 to present, the number proactively notified to EVN by people and businesses is very limited. In fact, most of the data we have is collected and surveyed by ourselves, but we have not yet formed a mechanism for regular reporting and updating from the people. As a result, the statistics are not synchronous and inaccurate, directly affecting the work of forecasting the load and ensuring supply.
From practical activities, EVN has proposed to have sanctions for administrative violations against investors installing rooftop solar power without registering/notifying according to regulations.
According to Mr. Nguyen Ba Hoai, Deputy Head of the Department of renewable Energy (NSMO), having full information about self- propelled rooftop solar power systems is extremely necessary for operation. Especially in forecasting the power generation capacity of this type of power source, as well as calculating the power system such as frequency, voltage, power quality, and electrical system consistency to ensure safe and stable power supply.
"The registered data on scale helps predict the total capacity of DMTMN that can be issued in every hour, every day, according to weather developments. If this basic data is lacking, the accuracy of forecast models will be limited, leading to errors in calculating resource mobilization, meeting people's electricity needs, affecting the safety and stability of the entire national power system in general" - Mr. Nguyen Ba Hoai said.
