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SPP Board Approves Alternative, Accelerated Generation Interconnection Process to Improve Regional Resource Adequacy

LCG, May 8, 2025--The Southwest Power Pool (SPP) Board of Directors approved SPP’s proposed Expedited Resource Adequacy Study (ERAS) at its May 6 meeting. SPP developed the new ERAS in collaboration with its stakeholders in response to the growing need to add new generating resources before the region’s generating capacity is outpaced by its electricity demands. ERAS is intended to be a one-time, expedited study process designed to significantly accelerate the addition of new power generation facilities to the grid and address concerns about the near term ability to maintain the affordable and reliable electric service that consumers expect.

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EDP Renewables Completes Scarlet II Solar and Energy Storage Project in California

LCG, May 7, 2025--EDP Renewables North America LLC (EDPR NA) announced yesterday the inauguration of its Scarlet II Solar Energy Park (Scarlet II) in Fresno County, California. This phase of the solar plus energy storage project includes 200 MW of solar capacity, plus a co-located 150 MW/600 MWh battery energy storage system (BESS). The initial phase of the project, Scarlet I, which provides 200 MW of solar and 40 MW/160 MWh of BESS, achieved commercial operations in July 2024.

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Industry News

Analysis of Summer Resource Adequacy in ERCOT

LCG, July 28, 2016--LCG Consulting releases its analysis of resource adequacy in Texas for high stress conditions in summer 2016.

Every year, the Electric Reliability Council of Texas (ERCOT) publishes reports on Seasonal Assessment of Resource Adequacy, or SARA. In it, ERCOT identifies scenarios to determine whether the Texas system can meet demand under a variety of challenging conditions. LCG has modeled these cases and offers an in-depth exploration into what happens with prices, congestion, and generation under the cases ERCOT presents in the 2016 summer assessment.

Using the advanced UPLAN-NPM modeling system, LCG extends ERCOT’s snapshot report of the summer season to delve more fully into system challenges and outcomes associated with such stress cases, including ramping constraints, Operating Reserve Demand Curve (ORDC) outcomes, pricing impacts, and unit commitment requirements.

LCG’s study models dispatch in the ERCOT region at five-minute intervals, instead of the more common hourly simulation. Modeling smaller slices more accurately captures the operation of the ERCOT system, including the sub-hourly ramping constraints of thermal units, which is particularly important under the SARA report stress cases.

The report relies on LCG’s UPLAN sub-hourly modeling capability as well as robust knowledge of all aspects of electricity transmission and generation in Texas, and decades of electricity modeling experience in the state.
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