PGS recovers the costs it pays for gas supply and
interstate transportation for system supply through its
purchased gas adjustment clause. This clause is designed to
recover actual costs incurred by PGS for
purchased gas, gas storage services, interstate pipeline capacity,
and other related items associated with
the purchase, distribution, and sale of natural gas to its
customers. These charges may be adjusted
monthly based on a cap approved annually by the FPSC.
The FPSC annually approves cost-recovery rates
for conservation costs and Cast Iron/Bare Steel Pipe
Replacement costs, including a return on capital invested
incurred in developing and implementing
energy conservation programs. The Cast Iron/Bare Steel
Pipe Replacement clause is to recover the cost
of accelerating the replacement of cast iron and bare
steel distribution lines in the PGS system. The
FPSC approved a replacement program of approximately
5
800
system at a cost of approximately $
80
10
-year period beginning in 2013.
In February
2017, the FPSC approved an amendment to the cast iron
bare steel rider to include certain plastic
materials and pipe deemed obsolete by Pipeline and Hazardous
Materials Safety Administration, totaling
approximately
880
kilometres. PGS estimates that the majority of cast
iron and bare steel pipe will be
removed from its system by the end of 2022, with the replacement
of obsolete plastic pipe continuing until
2028 under the rider.
On November 19, 2020, the FPSC approved a settlement agreement filed by PGS.
agreement allows for an increase to base rates by $
58
million USD annually effective January 1 2021,
which is a $
34
million USD increase in revenue and $
24
million USD increase of revenues previously
recovered through the cast iron and bare steel replacement
rider. It provides
PGS the ability to reverse a
total of $
34
million USD of accumulated depreciation through
2023. PGS has not reversed any of this
accumulated depreciation to date. In addition, the agreement
sets new depreciation rates effective
January 1, 2021. Under the agreement base rates are
frozen from January 1, 2021 to December 31,
2023, unless its earned ROE were to fall below
8.9
per cent before that time with an allowed equity in the
capital structure of
54.7
per cent from investor sources of capital. The settlement
agreement provides for
the deferral of income taxes as a result of changes in
tax laws. The changes would be reflected as
a
regulatory asset or liability and either result in an increase
or a decrease in customer rates through a
subsequent regulatory process.
NMGC
NMGC is subject to regulation by the NMPRC. The NMPRC
sets rates at a level that allows NMGC to
collect total revenues equal to its cost of providing
service, plus an appropriate return on invested
capital.
NMGC’s approved ROE for 2021 was
9.375
per cent on an allowed equity capital structure of
52
The approved ROE for 2020 was
9.10
per cent on an allowed capital structure of
52
NMGC recovers gas supply costs through a purchased
gas adjustment clause (“PGAC”). This clause
recovers NMGC’s actual costs for purchased gas, gas
storage services, interstate pipeline capacity,
and
other related items associated with the purchase, transmi
ssion, distribution, and sale of natural gas to its
customers. On a monthly basis, NMGC can adjust the
charges based on the next month’s expected cost
of gas and any prior month under-recovery or over-recovery.
The NMPRC requires that NMGC annually
file a reconciliation of the PGAC period costs and recoveries.
NMGC must file a PGAC Continuation Filing
with the NMPRC every four years to establish that the
continued use of the PGAC is reasonable and
necessary. In December
2020, NMGC received approval of its PGAC Continuation
Filing for the four-year
period ending December 2024.
In February 2021, the State of New Mexico experienced
an extreme cold weather event that resulted in
an incremental $
108
million USD for gas costs above what it would normally
have paid during this period.
On June 15, 2021, the NMPRC approved the recovery
over a period of
30
2021. For more information, refer to the “NMGC Winter
Event Gas Cost Recovery” section above.