Large Generator Interconnection (LGI)

This page provides more detailed information on submitting a Large Generator Interconnection Request. A Large Generator is a generator, or an aggregation of generators, who's single or combined generating nameplate capacity is greater than 20 MW. The interconnection of Large Generators to the Federal Columbia River Transmission System (FCRTS) is governed by Attachment L to BPA's Open Access Transmission Tariff and the Large Generator Interconnection Business Practice.  

Transition to a Cluster Study

As of June 30, 2024, BPA has changed the Large Generator Interconnection process from a serial process to a cluster study process. Requests in the queue that required study are now being studied in the Transition Cluster Study. New Large Generator Interconnection Requests must be studied in the Post-Transition Cluster Study unless they are Surplus, Repower, or Replacement requests.

Submitting a Large Generator Interconnection Request

To initiate a Large Generator Interconnection Request, an Interconnection Customer must submit all of the following:

• A Large Generator Interconnection Request (Appendix 1)
• A non-refundable $10,000 application fee (Payment and Remittance Instructions)

• Evidence of Site Control (Site Control Business Practice)

• A Generation Model and Performance Attestation (Attachment A to Appendix 1)

To join the next Cluster Study, these documents must be submitted to GI_ClusterStudies@bpa.gov. For Surplus, Repower, or Replacement Requests these documents must be submitted to Interconnection@bpa.gov.

Please cc your Transmission Account Executive and the GI Administrator on email submittals.

The Interconnection Request’s Queue Position within the queue shall be assigned based upon the date and time of receipt of all items required