New Customer Transmission Instructions

Puget Sound Energy offers firm and non-firm transmission services in Washington, Oregon, and western Montana. The following instructions are required steps in order to obtain transmission services.

Please note that all customers desiring transmission services from PSE are required to use the Open Access Same-Time Information System (OASIS) to submit their requests.

Step one: Make sure you have a DUNS number

Go to Transmission System Information Networks (TSIN) for instructions on obtaining a Data Universal Numbering System number (DUNS) if you do not already have one.

Note: If you have both a transmission division and a power marketing division in your company, each division will need to have its own unique DUNS number.

Step two: Register as a Transmission Customer at TSIN

Follow the steps for new registrants on TSIN

Step three: Register with OATI webCARES™

Follow the steps for new registrants on westtrans.net.

Step four: Contact PSE

IMPORTANT! Once you have completed the above steps, please contact the PSE Transmission Contracts Manager and request to become a transmission customer. We will then perform the necessary steps to authorize you to make transmission requests via the OASIS.

Step five: Request your service agreement(s)

If you intend to purchase short-term, point-to-point transmission services at any time, you should request a blanket transmission service agreement by following the instructions.

Additional instructions on how to properly use PSE's OASIS, as well as assistance regarding the requesting of transmission and ancillary services pursuant to PSE's Open Access Transmission Tariff, are available by contacting a transmission scheduler at 425-462-3400.