Topic summary
Electric power transmission

Bulk movement of electrical energy This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article may be in need of reorganization to comply with Wikipedia's layout guidelines. Please help by editing the article to make improvements to the overall structure. (March 2026) (Learn how and when to remove this message) This article may need to be rewritten to comply with Wikipedia's quality standards. Relevant discussion may be found on the talk page. You can help. The talk page may contain suggestions. (March 2026) The examples and perspectives in this article deal primarily with the United States and do not represent a worldwide view of the subject. You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. (March 2026) (Learn how and when to remove this message) (Learn how and when to remove this message) Five-hundred kilovolt (500 kV) Three-phase electric power Transmission lines at Grand Coulee Dam. Four circuits are shown. Two additional circuits are obscured by trees on the far right. The entire 6809 MW nameplate generation capacity of the