Kinder Morgan has proposed to build a 4 Bcf (113mn cf) underground natural gas storage facility in southern Arizona after two earlier projects failed to progress.
The pipeline will launch an open season in December to gauge interest in its proposed Arizona Gas Storage project to be built near Eloy, Arizona, between Phoenix and Tucson, Kinder Morgan vice-president of business development Greg Ruben told members of the Arizona Corporation Commission (ACC) this week.
The project would create four caverns of roughly 1 Bcf working gas inventory each from salt dome caverns.
If the project moves ahead and obtains all regulatory approval, Kinder Morgan's time line calls for construction to begin in 2019, with the first cavern to enter service late 2020. A second cavern could enter service in early 2022, followed by two other caverns in 2023 and late 2024.
The completed storage field would have withdrawal capacity of 400mn cf/d and injection capacity of 168-183mn cf/d, Ruben said. Two lateral lines will connect the storage facility to the El Paso pipeline system to serve delivery meters in Phoenix and Tucson.
The storage field, combined with El Paso pipeline capacity, will be able to offer no-notice storage service to supply gas to electric utilities' need to respond to intermittent renewable power output and extreme weather-related demand, Ruben said.
ACC chairman Doug Little said Arizona's lack of underground gas storage "is a huge gaping hole" in the state's energy infrastructure. He said investors he speaks to about power or gas projects are "concerned that we have no storage."
Federal regulators identified a need for more gas storage in the US southwest following a February 2011 gas supply disruption. The market lost 51 Bcf of gas supply over several days as cold weather led to freeze-offs at wellheads and other gas infrastructure. More than 250 power generation units also had weather and fuel-related problems.
A report said some of the cold-weather issues could have been avoided had gas been available from storage sites closer to markets in the region.
El Paso Natural Gas proposed another gas storage project in 2006 in the Eloy area designed to hold 3.5 Bcf. An open season was held in 2008, but the project did not advance because of insufficient market interest and a lack of commercial buyers for salt from the caverns. In 2003, El Paso acquired the Copper Eagle salt dome storage project near Glendale, Arizona. That project ran into local opposition and is not longer being pursued, Kinder Morgan said.
Arizona is included in the Energy Information Administration's 11-state Rocky Mountain region that reported a stockpile of 243 Bcf last week, 15pc above the 2015 level and 19pc above the five-year average. Since 1 April, the Rockies region has injected 94 Bcf, 4pc above the five-year average injection for the same period.

