Illinois Competitive Energy Ass'n v. The Illinois Commerce Comm'n

2022 IL App (2d) 210415-U
Appellate Court of Illinois·Decided May 27, 2022·No. 2-21-0415·Unpublished

Opinion

No. 2-21-0415 & 2-21-0420 cons.

Order filed May 27, 2022

NOTICE: This order was filed under Supreme Court Rule 23(b) and is not precedent except in the limited circumstances allowed under Rule 23(e)(l).

IN THE

APPELLATE COURT OF ILLINOIS

SECOND DISTRICT

ILLINOIS COMPETITIVE ENERGY ) On Petition for Administrative Review ASSOCIATION; RETAIL ENERGY SUPPLY ) from The Illinois Commerce Commission ASSOCIATION; CARGILL, INC.; ) CATERPILLAR, INC.; STERLING STEEL ) COMPANY; INGREDION INCORPORATED;) and EXXONMOBIL POWER & GAS ) SERVICES, INC., )

)

Petitioners, )

)

v. ) ICC Docket No. 20-0606 )

THE ILLINOIS COMMERCE COMMISSION; ) NORTHERN ILLINOIS GAS COMPANY ) d/b/a Nicor Gas Company; ) CONSTELLATION NEW ENERGY–Gas ) DIVISION, LLC; GRAIN AND FEED ) ASSOCIATION OF ILLINOIS; ILLINOIS ) MANUFACTURER’S ASSOCIATION; ) ILLINOIS ASPHALT PAVEMENT ) ASSOCIATION; NUCOR STEEL ) KANKAKEE, INC.; SEQUENT ENERGY ) MANAGEMENT, LP; and ILLINOIS ) ENERGY, USA, LLC, )

)

Respondents. )

JUSTICE ZENOFF delivered the judgment of the court.

Presiding Justice Bridges and Justice Birkett concurred in the judgment.

ORDER

¶1 Held: The Appellate Court affirmed the decision of the Illinois Commerce Commission where (1) Nicor presented evidence of the impact of its proposed tariff changes on customers and (2) the Commission’s order was sufficient to allow review and was supported by substantial evidence.

¶2 In this appeal, which was consolidated for purposes of oral argument and disposition, 1 petitioners, Illinois Competitive Energy Association (ICEA), Retail Energy Supply Association (RESA), Cargill, Inc., Caterpillar, Inc., Sterling Steel Company, Ingredion Incorporated, and ExxonMobil Power & Gas Services, Inc. (collectively Illinois Industrial Energy Consumers) (IIEC), appeal an order of the Illinois Commerce Commission (Commission) approving changes to respondent’s, Northern Illinois Gas Company, d/b/a Nicor Gas Company’s (Nicor) tariffs. These changes relate to Nicor’s natural gas storage parameters and “cash-out” provisions stemming from Nicor’s ownership and operation of eight underground aquifer storage reservoirs of natural gas. For the following reasons, we affirm.

¶3 I. BACKGROUND

¶4 Nicor is a public utility engaged in the distribution of natural gas at retail. Nicor serves two types of customers. “Transportation” customers purchase natural gas from suppliers other than Nicor but use Nicor’s transmission and distribution systems, including Nicor’s aquifer storage reservoirs. “Sales” customers purchase natural gas directly from Nicor. For both types of customers, Nicor delivers the purchased gas to the end consumer.

¶5 An aquifer storage reservoir is a naturally occurring underground geologic formation consisting of a water-filled sandstone layer covered by a non-permeable dome-shaped caprock. Natural gas injected into the reservoir displaces the water. This displacement creates the pressure

1 Petitioners withdrew their request for oral argument.

necessary for withdrawal of the gas when appropriate. If an appropriate volume of gas is not withdrawn within prescribed time periods, the pressure in the reservoir moves toward equilibrium, making the gas more difficult to withdraw. Hindering appropriate withdrawal results in a loss of Nicor’s working gas inventory and affects all customers.

¶6 Nicor plans its injection-withdrawal schedule to maintain the long-term viability of the reservoirs. This process is called “cycling.” At the start of the winter season, Nicor fills the reservoirs and then withdraws gas during the heating season, so that the reservoirs are nearly empty of gas at the end of the heating season. Proper cycling is necessary to prevent pressure from moving toward equilibrium and negatively affecting Nicor’s future deliveries of gas to all customers.

¶7 In 2017, the Commission directed Nicor to evaluate the operational risks of how transportation customers use the reservoirs. Nicor concluded that transportation customers’ use, although consistent with current tariffs, nonetheless poses risks to Nicor’s future ability to protect its reservoirs and meet the needs of all customers. Specifically, Nicor noted that transportation customers’ use deviated from Nicor’s planned injection and withdrawal schedules, impacting the long-term integrity of the reservoirs. Based on Nicor’s “storage study,” the Commission ordered Nicor to propose tariff changes to remedy the problems identified in the study.

¶8 On June 30, 2020, Nicor filed proposed revised tariffs related to transportation customers. Nicor proposed that all transportation customers keep their daily and monthly gas inventory balances within certain prescribed parameters. Nicor further proposed that variances from those parameters result in “cash-outs,” that is, Nicor would either purchase a transportation customer’s excess supply of natural gas or sell a transportation customer a volume of natural gas equal to that

customer’s shortfall.2 Nicor’s stated purpose in recommending these tariff changes was for transportation customers to manage their use of the reservoirs within the parameters rather than incur cash-outs. The Commission opened a proceeding at which both Nicor and petitioners, as intervenors (along with other intervenors), participated. The administrative law judge (ALJ) held an evidentiary hearing. Below, we recount only the testimony necessary to understand the issues raised on appeal. We will include additional facts, as necessary, in our analysis.

¶9 A. Nicor’s Evidence

¶ 10 Timothy Sherwood, Nicor’s vice-president of gas supply operations, testified that the tariffs must be modified to (1) maintain the integrity of the reservoirs and (2) allow Nicor to operate the reservoirs at optimal pressures. Sherwood testified that the proposed tariffs were “just and reasonable” and that they “balance the interests of all customers,” as “all customers benefit” from Nicor’s reservoirs. According to Sherwood, Nicor “must meet its delivery obligations to its customers” using its reservoirs. Otherwise, Nicor would need to purchase natural gas elsewhere, which would be expensive and difficult to obtain because existing interstate pipelines serving Nicor’s territory are limited.

¶ 11 Sherwood testified that transportation customers’ current use of the reservoirs conflicts with the cycling needed to maintain the reservoirs’ integrity. Sherwood explained that there is no correlation between the volume of gas that transportation customers “nominate” daily and the amount that such customers’ end-consumers use. According to Sherwood, this disparity is “inconsistent” with the “physical operational requirements of the system.” Sherwood testified that,

2 During the proceedings before the Commission, Nicor modified its original proposal and

asked the Commission to approve its modified proposal.

historically, transportation customers fail to cycle their stored gas throughout the withdrawal season, making it difficult for Nicor to manage the reservoirs’ “operational viability.”

¶ 12 Sherwood explained that the proposed tariff changes would require all transportation customers to keep their usage within prescribed daily and monthly parameters, or any variances would be “cashed out” at the end of the month. Sherwood testified that this change would reduce the risk to the system and maintain the reservoirs’ continued viability to the “benefit of all customers.”

¶ 13 Ann M. Hizon also testified for Nicor. She is Nicor’s rates manager. Hizon testified that the purpose of the tariff changes is to “place all customers” who use Nicor’s reservoirs “under the same fair and equitable rules,” while allowing Nicor to operate the reservoirs “safely” to maintain “peak” and subsequent peak-day delivery of natural gas.

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