The TWE Project is under the jurisdiction of the Federal Energy Regulatory Commission. FERC is an independent agency that regulates the interstate transmission of electricity and regulates other energy infrastructure.
Information related to TransWest’s FERC filings for the TWE Project will be provided on this page as it becomes available.
- Dec. 11, 2020: TransWest’s “Application for authority to sell transmission service rights at negotiated rates, Request for approval of capacity allocation process, and request for waivers” in Docket No. ER21-645-000. (PDF, 284 KB)
- Dec. 21, 2020: Federal Register Notice of Filing
- Feb. 5, 2021: TransWest’s “Amendment to application” (PDF, 66 KB)
- Feb. 8, 2021: FERC Notice of Filing (PDF, 67 KB)
- Feb. 26, 2021: FERC’s “Order granting application” in Docket No. ER21-645-000 (PDF, 241 KB)
- Dec. 3, 2021: TransWest’s “Post-Open Solicitation compliance filing” (PDF, 18.2 MB)
- Feb. 16, 2022: FERC accepted TransWest’s filing as demonstrating compliance with the approved Open Solicitation process and selection criteria. (TransWest Express LLC, FERC Docket No. ER21-645-000, unpublished letter order.)
TWE Project information
- The TWE Project is a new high-voltage interregional transmission system designed primarily to deliver renewable wind energy from Wyoming to the Desert Southwest region (California, Nevada, and Arizona). It will include three interconnected segments extending a total of 732 miles between Wyoming and Nevada.
- The TWE Project will consist of three linked segments that include: (1) a 405-mile, 3,000 MW, 500 kV high-voltage direct current (HVDC) system between Wyoming and Utah; (2) a 278-mile, 1,500 MW, 500 kV high-voltage alternating current (HVAC) transmission line between Utah and Nevada; and (3) a 49-mile, 1,680 MW, 500 kV HVAC transmission line in Nevada.
- Pending interconnection requests
- Wyoming: The TWE Project will interconnect to PacifiCorp’s Wyoming 500 kV transmission system.
- Utah: The TWE Project will interconnect to the Intermountain Power Agency’s Intermountain Power Project at its 345 kV Switchyard.
- Nevada: The TWE Project will interconnect to NV Energy’s 500 kV system and CAISO’s 500 kV system.
TransWest’s Open Solicitation
- TransWest’s initial capacity allocation process was approved by FERC on Feb. 26, 2021. TransWest has retained an Independent Solicitation Manager to run the open solicitation process, including managing a TWE Project Open Solicitation website at www.transwestexpress-os.com.
- On June 7, 2021, the Notice of Open Solicitation was published on the Open Solicitation website.
- On Nov. 5, 2021, the process concluded with the negotiation of customer agreements between TransWest and Power Company of Wyoming LLC.
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In the news
"A number of peer-reviewed studies have documented that the aggregate output of wind and solar plants spread over a large geographic area is much less variable than the output of plants clustered into a small area. Thus, a more robust grid can significantly reduce the cost of integrating wind and solar power with the grid by allowing larger power flows between regions as well as making it possible to access renewable resources from a greater diversity of areas."
- AWEA/SEIA Green Power Superhighways report, February 2009