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Oklo and Siemens Energy Sign Agreement to Accelerate Power Conversion System for New SMR in Idaho

LCG, November 19, 2025--Oklo Inc. and Siemens Energy announced today that the parties have signed a binding contract for the design and delivery of the power conversion system for Oklo’s Aurora-INL (Idaho National Laboratory) nuclear small modular reactor (SMR). The agreement authorizes Siemens Energy to begin engineering and design work to expedite procurement of long-lead components and to initiate the manufacturing process for the power conversion system. Oklo’s expertise in advanced fission technology will be combined with Siemens Energy’s extensive industry experience with steam turbine and generator systems, with the ultimate goal of generating carbon-free, reliable electricity.

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NERC's New Winter Reliability Assessment Raises Concerns for Elevated Risk of Insufficient Supplies to Meet Demand in Extreme Operating Conditions

LCG, November 19, 2025--NERC yesterday released its 2025–2026 Winter Reliability Assessment (WRA), which concludes "much of North America is again at an elevated risk of having insufficient energy supplies to meet demand in extreme operating conditions." The WRA does state that resources are adequate for normal winter peak demand, but extended, wide-area cold snaps will be challenging.

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Industry News

PG&E and Tesla Commence Construction on the Moss Landing Battery Energy Storage System

LCG, July 30, 2020--PG&E and Tesla have commenced construction of the 182.5-MW lithium-ion battery energy storage system (BESS) at PG&E's electric substation in Moss Landing in Monterey County, California. The system will be designed, constructed, and maintained by PG&E and Tesla. Construction is expected to continue into early next year, and the facility is scheduled to be fully operational in the second quarter of 2021. When completed, the project will be one of the largest utility-owned, lithium-ion battery energy storage systems in the world. PG&E will own and operate the facility.

The Moss Landing BESS is intended to enhance reliability and will participate in the California Independent System Operator (CAISO) markets, providing energy and ancillary services to the grid. The project is a significant step by PG&E toward achieving its requirement to provide 580 MW of operational energy storage capacity by 2024.

PG&E's senior vice president of energy policy and procurement stated, "Battery energy storage plays an integral role in enhancing overall electric grid efficiency and reliability, integrating renewable resources while reducing reliance on fossil fuel generation. It can serve as an alternative to more expensive, traditional wires solutions, resulting in lower overall costs for our customers. The scale, purpose and flexibility of the Moss Landing Megapack system make it a landmark in the development and deployment of utility-scale batteries."

The Moss Landing BESS project includes 256 Tesla Megapack battery units on 33 concrete slabs. Each unit houses batteries and power conversion equipment in a single cabinet. Transformers and switchgears will also be installed along with the Megapacks to connect energy stored in the batteries with the 115 kv electric transmission system.

When completed, the Moss Landing BESS will have the capacity to store and dispatch up to 730 MWh of energy to the electrical grid at a maximum rate of 182.5 MW for up to four hours during periods of high demand. PG&E's agreement with Tesla contains an upsize option that can increase the capacity of the system up to six hours, or 1.1-GWh total.

PG&E estimates the Moss Landing BESS will save more than $100 million over the 20-year life of the project, when compared to the forecasted local capacity requirements and associated procurement costs that would have been necessary in absence of the BESS.

The BESS was approved by the California Public Utilities Commission (CPUC) in November 2018 and by the Monterey County Planning commission in February 2020.
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