Minnesota Power advances HVDC transmission system project to strengthen grid reliability, resiliency in Upper Midwest
“Investing in transmission and replacing aging infrastructure with modern technology are critical to strengthening the reliability and resiliency of the grid in the Upper Midwest—especially as we experience more frequent extreme weather events and our energy supply continues to evolve,” said
“The HVDC system is critical infrastructure, and after more than 45 years of service it’s time to make improvements in sizing and configuration that will help improve reliability and reduce transmission congestion on our electric grid,” said
- Improves reliability of the transmission system.
- Improves system resiliency by creating bi-directional line capability, which allows energy to flow in either direction to where it is needed.
- Expands the operating capacity of the HVDC terminals now and in the future for additional energy transfers in the Upper Midwest.
- Replaces critical infrastructure that has reached the end of its design life.
Pending regulatory approvals, construction could begin as early as 2024 in
Minnesotaand North Dakota, with an in-service date between 2028 and 2030.
Cost for the new modern system is estimated between
$800 millionand $900 million.
The company is seeking federal and state funding to help mitigate rate impacts on customers. In May,
$15 millionin state funding was secured as part of the energy and climate budget bill passed by the Minnesota Legislature.
Under a preferred supplier agreement,
Minnesota Powerhas obtained a manufacturing slot and resource commitments from Siemens Energy that will establish a collaborative partnership between the organizations and ensure the project is delivered on time.
Minnesota Powerhas engaged with area landowners as part of its development process and will continue to engage with stakeholders and members of the public as they provide feedback and input during the regulatory review process for the Certificate of Need and Route Permit, which is expected to take about a year. Minnesota Poweralso will be seeking permits from the North Dakota Public Service Commission for the HVDCfacility modifications in North Dakota.
Minnesota Power’s HVDC transmission line is one of only a handful of existing HVDC lines in the country. HVDC lines transmit electricity more efficiently over long distances than alternating current (AC) lines and more strongly link disparate parts of the electrical grid together. Specialized stations, like the ones proposed for this project, convert the HVDC power to AC so it can flow on the existing electric grid.
Commissioned in 1977, the HVDC transmission line and terminals have served
The statements contained in this release and statements that
Director - Corporate Communications