Skip Navigation Links
About
Power Marketing
Transmission
Newsroom
Contact Us
Training
Energy Services
Renewables
Skip Navigation Links
Transmission
Functions
Environmental Review -- NEPA
Interconnection
OASIS
OATT
Transmission Infrastructure Program
Open Access Same-time Information System

OASIS is an Internet-based tool for sharing information on transmission prices and product availability. FERC Order No. 889 restricts communication between power marketing and transmission operation employees within any one organization. Utilities can obtain information about their own transmission system for their own wholesale power transactions only through OASIS. Customers can view Available Transmission Capability; submit transmission service requests, etc. on the applicable Region’s OASIS site(s) below:

Sierra Nevada Region transmission (TSP = WASN)
The Sierra Nevada Region, based in Folsom, CA, operates and maintains the Central Valley and Washoe projects' transmission lines and facilities, which were constructed to market and deliver power resources to wholesale customers in northern and central California and Nevada. The region imports additional power over Western's share of the Pacific Northwest-Pacific Southwest Intertie and the California-Oregon Transmission Project. The region operates a sub-control area called the Western Area Sierra Nevada, which also has ownership rights to capacity in the Pacific AC Intertie and the Los Banos-Gates Transmission Upgrade Project, known as Path 15. WASN is located in the Balancing Authority of Northern California control area.

Visit SNR's OASIS Redirecting to a non-government website site. (Note a digital certificate and login is required for full access.)

Upper Great Plains transmission (TSP = WAPA)
The Upper Great Plains Region, based in Billings, Montana, manages transmission facilities in Montana, North Dakota, South Dakota, Nebraska, Minnesota, and Iowa. These transmission facilities were constructed to market and deliver power from the Pick-Sloan Missouri Basin Program — Eastern Division.  UGP manages two control areas from its Control Center in Watertown, SD; one in the Midwest Reliability Organization region called Western Area Power Administration — Upper Great Plains East, or WAUE, and one in the Western Electricity Coordinating Council region called Western Area Power Administration — Upper Great Plains West, or WAUW. UGP transmission facilities are integrated with Basin Electric Power Cooperative’s transmission facilities in the Eastern Interconnection and Heartland Consumers Power District’s transmission facilities to provide transmission services over an Integrated System (the “IS”).

Visit UGP's OASIS Redirecting to a non-government websitesite.  (Note a digital certificate and login is required for full access.)

Desert Southwest Region transmission (TSP = WALC)
The Desert Southwest Region, based in Phoenix, Arizona, operates and maintains Western transmission lines and facilities in Arizona, California, and Nevada, constructed to market and deliver power to customers from the Boulder Canyon and Parker-Davis projects and the transmission resources from the southern portion of the Pacific NW-SW Intertie.  DSW manages a control area from the regional office in Phoenix, AZ, known as the Western Area Power Administration, Lower Colorado, or WALC.

Visit DSW's OASIS Redirecting to a non-government website site.  (Note a digital certificate and login is required for full access.)

Rocky Mountain Region transmission (TSP = CRCM and LAPT)
TheRocky Mountain Region, based in Loveland, Colorado operates and maintains Western's transmission facilities in Colorado, Wyoming, Montana, and Nebraska, which were constructed to market and deliver power from the Loveland Area Projects under the TSP code of LAPT. The region also markets the Salt Lake City Area/Integrated Projects transmission system in Arizona, New Mexico, Colorado, Wyoming, and Utah under the TSP code of CRCM.  RMR manages a control area in Loveland, Colorado, known as the Western Area Power Administration, Colorado Missouri, or WACM.

Visit RMR’s CRCM OASIS Redirecting to a non-government website site.  (Note a digital certificate and login is required for full access.)

Visit RMR’s LAPT OASIS Redirecting to a non-government website site.  (Note a digital certificate and login is required for full access.)

RMR also manages transmission marketing for Basin Electric Power Cooperative for its transmission facilities in the Western Interconnection under the TSP code of BEPW.

Visit BEPW OASIS Redirecting to a non-government website site.  (Note a digital certificate and login is required for full access.)

Colorado River Storage Project Management Center transmission
The Colorado River Storage Project Management Center, based in Salt Lake City, Utah, manages the Salt Lake City Area Integrated Projects, which provides power to customers in Arizona, Colorado, New Mexico, Utah and Wyoming.  The Rocky Mountain Region operates and maintains the SLCA/IP transmission facilities and provides engineering and other assistance to the CRSP MC. Transmission marketing for CRSP MC is performed by RMR under TSP code of CRCM.

To reserve transmission on the SLCA/IP transmission system visit RMR’s CRCM OASIS  Redirecting to a non-government website site.