With Aliso Canyon natural gas storage at capacity and the Honor Rancho storage facility shut in for maintenance, Southern California Gas Co.'s ability to use storage injections for system balancing is limited, with supply excesses expected into the week of Oct. 25.

Western natural gas system constraints throttled flows into the Pacific Northwest from Canada between Oct. 7 and Oct. 14, while demand effects rippled throughout the Southwest into Southern California.

The shut-in of the Aliso Canyon natural gas storage facility continued supporting Western energy prices. Both natural gas and power prices generally ended higher at the end of Sept. 30 to Oct. 7 trading.

Ongoing regional pipeline constraints, cooler temperatures and the shut-in of Aliso Canyon natural gas storage contributed to Western natural gas prices generally above $5/MMBtu.

Western energy prices generally decreased this week as national natural gas prices moved lower.

Western power prices tumbled from high levels as heat exited the region.

Energy prices throughout the West skyrocketed based on factors including heat-based demand and supply constraints.

California natural gas values continue to be pressured not only by transmission constraints that are expected to continue indefinitely, but also by new supply disruptions.

California natural gas values soared above $5/MMBtu in trading, pressured by transmission constraints that are expected to continue indefinitely.

As heat recently exited from most of the western U.S., so too did support for regional energy prices.

Weather continued to drive energy prices across the western U.S., although there wasn't a clear correlation between conditions and prices.

As weather across the West generally cooled with the arrival of August, so too did demand and peak power prices.

Another round of intense heat across the western U.S. prompted most energy prices to skyrocket in trading.

Continuing heat with added natural gas infrastructure constraints drove daytime Western energy prices generally higher this week.

As weather conditions across the Western U.S. moderated, so too did most regional energy prices; however, transmission derates were a significant factor that supported prices for a few days during the week.

A surge of heat across California and Nevada starting July 9 is expected to increase energy demand as temperatures likely reach record highs through July 11.

Oppressive, unrelenting heat throughout the western United States generally supported demand and bolstered energy prices between June 24 and July 1.

A lull in the extreme heat across the West suppressed regional power prices this week, but might be a preview of upcoming demand and pricing patterns, especially in the desert Southwest.

Extreme, record heat across the West triggered demand that pushed power prices to extremes, the most obvious of which was the 6,000-percent leap in Palo Verde daytime power between June 10 and June 17.

Waning heat and lower air-conditioning demand caused Western power prices to fall between June 3 and June 10.

Record and above-normal heat sent Western energy prices higher, with Pacific Northwest daytime power price highs surpassing the $100 mark June 2.

Contrasting California natural gas prices were obvious for yet another week despite the end of scheduled maintenance in Southern California.

Yogi Berra should have been in the energy business. Western energy markets were fraught with déjà vu all over again this week as maintenance issues prompted prices to move lower.

Energy Northwest prepared the nuclear Columbia Generating Station for routine refueling early May 8 by disconnecting it from the grid.

Southern California Gas Co. is wrapping up maintenance activities at the Honor Rancho storage facility, putting upward pressure on regional natural gas prices.

Southern California Gas Co.'s continuing maintenance at its Honor Rancho gas storage field served to depress Southern California natural gas prices.

Last week's across-the-board increases in Western power prices failed to last amid relaxed supply constraints that freed natural gas supplies, including those earmarked for Southern California markets.

Prices for both Western natural gas and power jumped in trading, due in part to ongoing supply constraints.

Maintenance issues contributed to a divergence in Western energy prices this week.

The latest manual snowpack measurements by the California Department of Water Resources at Phillips Station found April 1 conditions "well below normal," with 49.5 inches of snow depth and a snow-water equivalent of 21 inches—83 percent of average for the location.

California agencies are preparing for drought and closely observing watershed conditions statewide.

California energy prices trended lower throughout the week as the supply-demand balance teetered slightly.

Cooler weather and supply constraints generally bolstered Western energy prices this week. Although natural gas price trajectories varied, power prices ratcheted higher.

Western natural gas prices generally trended higher over the past week, which was attributed to regional maintenance issues.

Weather-inflated Western energy prices continued to moderate this week. While power prices plunged sharply in trading, without the demand support or supply constraints of the prior week, regional natural gas prices leveled off.

Frigid conditions across the continental United States sent Western energy prices on a rollercoaster ride in the abbreviated Feb. 11 to Feb. 18 trading period. Markets were closed Monday, Feb. 15, in observance of Presidents Day.

Intense cold weather lit a fire under Western natural gas prices this week, propelling most above $8 by Feb. 12.

The California Department of Water Resources is preparing to weather a dry year after assessing the snowpack Feb. 3.

A jolt of cold air perked up both energy prices and demand during the Jan. 21 to Jan. 28 report week.

Western energy prices remained as flat as demand for yet another week.

Western energy prices continued on a fairly flat trajectory without much support from demand.

Western energy price movement was nominal, if not tame, following the flip of the calendar to 2021. Demand was sufficiently soft that additions were made to California natural gas storage during the Dec. 31 through Jan. 7 trading period.

In a reversal of last week's peak power price movements, Pacific Northwest power prices picked up value while other Western hubs lost four to five dollars.

Lacking an Arctic blast or other seasonal weather changes to propel demand, Pacific Northwest power prices sagged while other regional prices ticked up a few dollars.

Despite roughly similar week-over-week regional power demand, Western energy prices moved lower in Dec. 3 to Dec. 10 trading.

In initial forecasts for the 2021 Western water year, Pacific Northwest hydro generation appears to be in good shape; however, similar California forecasts have yet to be issued.

Western energy prices seemed to have nowhere specific to go in advance of the Thanksgiving holiday.

The continental United States is well-prepared for its winter heating needs with 3,920 Bcf of natural gas in storage. This is the third-greatest amount of natural gas in storage recorded at the end of a storage season and the largest amount since 2016, when there was 3,977 Bcf in storage, ac…

Without the need for air conditioning or heating, California power prices lost value in the Nov. 5 through Nov. 12 trading period.

Increased solar generation has precipitated an added need for natural gas-fired power between 4 p.m. and 6 p.m. to meet California demand, according to a new U.S. Energy Information Administration analysis.