jõujooned

Jõujooned, also known as "power lines" or "electricity transmission lines" in English, are a critical component of Estonia’s and broader Baltic energy infrastructure. These overhead lines transport electricity from power plants to substations and ultimately to consumers. In Estonia, the network is managed by Elering, the national transmission system operator, which ensures reliable and efficient electricity distribution across the country.

Jõujooned typically consist of metal conductors, such as aluminum or copper, suspended by insulators and supported by steel or concrete towers. The lines are designed to carry high-voltage electricity over long distances with minimal energy loss. In Estonia, the transmission voltage levels range from 110 kilovolts (kV) for regional distribution to 400 kV for cross-border and long-distance transmission, including connections to neighboring countries like Latvia and Finland.

The development of jõujooned in Estonia has evolved alongside the country’s energy independence goals. Following the Soviet era, Estonia has invested in modernizing its grid to improve reliability and integrate renewable energy sources. Cross-border interconnections, such as the Baltic Cable linking Estonia to Sweden, also play a key role in balancing supply and demand across the region.

Maintenance and safety are prioritized in the operation of jõujooned. Regular inspections, vegetation management, and weather-related precautions help prevent outages. Public awareness campaigns educate communities on safety near power lines, emphasizing the risks of climbing or tampering with infrastructure.

As Estonia transitions toward a greener energy mix, the role of jõujooned continues to expand, supporting the integration of wind and solar power while maintaining grid stability. The ongoing digitalization of the network further enhances monitoring and operational efficiency.