Paul Post, Head of IT, Digitalization, and Cybersecurity at Sunly, told ERR that Sunly has invested in systems that ensure the reliability of energy sources. He said that cybersecurity is very important for Sunly and other energy producers.
Post said that Sunly has invested in its SCADA system. This system uses encrypted communication solutions, firewalls, and, if necessary, manual control. Additionally, there is a fail-safe system independent of the grid that allows the entire park to be disconnected from the grid instantly.
Post said that Sunly's partner is a UK-based company specializing in physical cybersecurity. This company has also joined the NATO DIANA program. This ensures that energy production and critical data are under control.
Post noted that there are no known cases of undeclared devices in Chinese inverters in Europe. All products used undergo certification by European authorities. If the USA finds a need for additional tests, Sunly works with Estonian institutions to strengthen certification.
Rainer Tammus, Head of Renewable Energy Project Development and Implementation at Enefit Green, said that Enefit Green's solar parks also use inverters of Chinese origin. Remote access to them is limited and controlled.
Tammus said that cybersecurity is a serious issue. Inverters have been removed from the public internet, and remote access is only possible through controlled channels. The company regularly updates its risk assessments and considers both technical features and geopolitical risks.
Ain Köster, Head of Communications at Elering, said that Elering is aware of the risks associated with Chinese equipment. The company assesses various risk scenarios and develops cybersecurity. Recently, the construction of synchronous compensators and the launch of reserve markets have been improved to be prepared for the unexpected.
US experts have found suspicious communication devices in solar panel inverters. In the UK, concerns are growing that Chinese technology poses a greater threat. Inverters are mainly manufactured in China and are used worldwide. Typically, a firewall is installed on inverters, which should prevent direct communication with China.
According to sources, some devices allow bypassing the firewall. The Chinese embassy in Washington dismissed the allegations.