ERCOT, SPP File Proposed Scope of Coordinated Studies On Lubbock Power & Light ERCOT Integration
September 16,2016
ERCOT and SPP have filed with the Texas PUC a proposed scope of work and timeline for their coordinated studies of the impact of the proposed transition of the Lubbock Power & Light to ERCOT
Among other things, the reliability studies will identify potential violations of the North American Electric Reliability Corporation's (NERC), regional, and local planning criteria and the economic studies will indicate the expected change in system production costs and locational market/marginal prices (LMPs) resulting from the proposed transition
ERCOT and SPP said that while ERCOT and SPP can quantify regional reliability impacts and impacts on wholesale LMPs, they do not have the expertise or the necessary data to determine the impacts of the proposed LP&L transition on all customer classes. ERCOT and SPP expect that other parties will be able to use the information provided-in the study results, such as the LMP data, to provide opinions regarding impacts to customer classes
The proposed studies will identify any new transmission projects that would be needed and any planned projects that would be delayed or cancelled as a result of the transition. The ERCOT studies will indicate new transmission projects required to integrate the proposed transition of LP&L customers, taking into account the results of the Lubbock Integration Study previously filed with the Commission. In its studies, SPP will determine if there are any transmission projects approved, but not yet put into service, that would no longer be needed if the proposed transition is approved. SPP will also identify any new transmission projects and transmission service required to support the LP&L load remaining in SPP if the proposed transition does not occur or does not occur by the termination date of LP&L s current supply contract.
ERCOT will include in its study a review of the likely impacts of the proposed transition on the risk of subsynchronous resonance (SSR) to generation resources in West Texas. In addition, ERCOT will review the potential benefits from LP&L generation resources functioning as synchronous condensers.