Ellendale Substation is a 345/230kV substation located in Ellendale, North Dakota, US. The construction works on Ellendale Substation began in 2018. The project was commissioned in 2019.


The Ellendale Substation project is a new substation being operated by Montana-Dakota Utilities.

The designed voltage level of the project is 345/230kV, while the operating voltage level is 345/230kV. The step-in voltage of the substation is 345kV and the step-out voltage is 230kV. The substation capacity is 336MVA.

Ellendale Substation has received approval from North Dakota Public Service Commission to undertake the works on the project. Approximately $22m was financed by the authorities for the construction works of the project.

About Montana-Dakota Utilities

Montana-Dakota Utilities Co (MDU), a subsidiary of MDU Resources Group Inc, is a power company that offers electric and natural gas distribution service. The company’s services include residential, commercial services, trade ally program, preferred service by home serve and obtaining utility service. It provides customers services such as online account, payment options, start services, stop and transfer and bill assistance services. MDU offers electric load response program to electric commercial and industrial customers. The company provides demand response resources program. It serves in Montana, North Dakota, South Dakota and Wyoming.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.