Federal Energy Regulatory Commission’s (FERC) order on Jan. 21, 2020, approved on a permanent basis certain temporary measures previously approved to address issues caused by the limited operations Aliso Canyon Natural Gas Storage Facility. These measures include: 1) the manual update of gas commodity price indices the ISO uses to calculate proxy costs, default energy bids and generated bids in the day-ahead market (Section 39.7.1.1.1.3 (a)-(c)); and 2) the ISO’s provision of information regarding a resource’s potential commitment in the day-ahead market (Section 6.5.2.2.3).
The ISO will resume both these processes for trade date Jan. 28, 2020. FERC also approved the ISO’s use in the day-ahead and real-time market of the Monday-Only gas index occasionally published by the Intercontinental Exchange (ICE) on Fridays, provided the index meets the additional liquidity test performed by the ISO (Section 39.7.1.1.1.3 (b)-(c)). These procedures will also be effective for trade date Jan. 28, 2020.
Finally, the ISO will also make effective on Jan. 28. 2020, certain related tariff clarifications approved by FERC in its Jan. 21 order that clarify the greenhouse gas price indices (6.5.2.3.4) and the posting of the real-time gas price index (6.5.4.2.3). 
