In an industry where grid operators often engage in bickering and litigation over their borders, ERCOT and SPP have proven neighbors can also collaborate for the common good.
The grid operators’ in-house developers have worked together to produce version 2.0 of the Macomber Map, a visualization tool for control rooms. Projected on large overhead monitors, the map provides a geographical depiction of the system, including customizable views of power flows, constraints and other core system data that feed into the map and are then pieced together.
“As we collaborate on the software, we’re supporting each other,” said Mike Legatt, ERCOT’s principal “human factors engineer.” Legatt says the Macomber Map improves operators’ decision-making by increasing their situational awareness and simplifying the complexity wrought by integrating renewable resources, changes in market design and faster information flows.
“Our experience … is a great illustration of a new way of thinking, both about the relationships between technology and grid reliability and between independent grid operators like ERCOT and SPP,” said Cody Parker, SPP’s supervisor of operations support. “The adoption rate of users has been tremendous. It’s been clear that the … user-friendliness of the tool, the performance and responsiveness of the tool … those aspects have won over all the operators.”
Seeing the ‘Big Picture’
The system is named in honor of its creator, ERCOT’s Gary Macomber, a human factors engineer who died in August 2008, a few weeks before his first map became a production-level tool.
“Gary was really an incredible guy. He could see the big picture,” Legatt said. “This was the one [project] he was really excited about, because it’s pulling together disparate data from people who gather it. By doing all that work for the operators, it gives them more time and more mental bandwidth to be solving these problems.”
Legatt Source: ERCOT
“It’s opened up a whole new visualization framework without having to go through the physical process of drawing things pixel by pixel,” said SPP senior engineer Jeff Parker (no relation to Cody). “We’ve been able to use modern graphics-rendering capabilities built into it, instead of the old style of manually drawing everything.”
Legatt was behind the code for the map’s first version. However, he’s quick to say it’s the control room operators who developed the map.
“It’s all the users — operators, engineers and other groups within our organization — that have really defined how the tool grew and developed into what it is today,” he said.
In 2013, ERCOT released the code to the open source community for adoption by other users, such as governments, utilities and emergency responders who could benefit from improved situational awareness. The code has also been picked up by power-flow engineering students.
That led to version 2.0, which has an improved graphical user interface, among other upgrades.
Legatt credits SPP’s developers and operators for the new features. SPP staff tailored the tool to aggregate and analyze historical and real-time data from their energy management, markets, weather and other systems. The grid operators said SPP’s improvements enable operators to run what-if scenarios to monitor and mitigate congestion and outages.
“They’ve done some incredible work,” Legatt said of SPP. “They are showing things we were already showing, but in a better way. The graphical rendering is much nicer and much faster. It works better in remote-access situations … all thanks to Cody and his team.”
Human Factors Engineering
Cody Parker and his team became interested in Legatt’s work on human performance improvement through mutual industry contacts. Human factors engineering, also known as cognitive ergonomics or user-centered design, combines psychology and engineering.
Parker spent several months talking with Legatt, who has two master’s degrees and a doctorate in clinical health and neuropsychology. He recently defended his thesis in pursuit of a second doctorate from the University of Texas at Austin in energy systems engineering.
Once SPP’s Integrated Marketplace went live in 2014, Parker and his team were able to devote their full energy to adapting the map for their use.
Parker (l) and an unknown fellow SPP employee Source: SPP
“Working with Mike Legatt has been an absolute pleasure. It’s the key to our success and the ongoing coding,” Jeff Parker said. “He brings a whole new layer of ideas and questions … as we implement a requirement.”
After Legatt joined ERCOT in 2006, Macomber asked him to sit with ERCOT’s operators so he could understand their needs. “It became even more clear why we needed this tool,” Legatt said.
ERCOT began using the map’s first release in its training exercises in 2009, allowing its operators and those of market participants to visualize system restoration in black-start exercises and other scenarios.
Woody Rickerson, the ISO’s vice president of grid planning and operations, says he has seen performance continue to improve in training exercises. “That tells us those operators are even more prepared for success in real-life situations,” he said.
‘Eye-Opening’ Visit
Cody Parker visited ERCOT during one of the black-start exercises. Seeing the training was “very eye-opening,” he said.
Parker and his team took the code back to SPP and, after six months of development, integrated the tool with its other systems. The RTO has been using the map in its operations since March and recently began using it to train all of their operators. Parker’s team is now working on making the tool available to SPP’s external training department.
“We were able to take the users’ feedback and quickly apply it,” Parker said. “More often than not, that enhanced development was available for the [next] round of trainers. That was one of the huge advantages of going with the open-source solution.”
“The nice thing about using a product we have the source code for is we can go in and make things the way we need to make them work. Using a vendor’s tool, we just couldn’t go in and make any changes we wanted,” said SPP’s Tim Van Prooyen, a senior operations programmer and analyst.
One of the tool’s other advantages is that its updated rendering makes it easier to run on virtual machines — programs that emulate dedicated hardware.
“Before, you needed a physical machine on each person’s desk, but now you can [use] virtual systems without dedicated video graphics cards. Any user can pretty much use it on any machine, remote and on-site,” Parker said.
“The only thing we ask is if they find out ways to make it better … to let us know about it,” Legatt said. “One of the benefits of open sourcing the map and building these kinds of collaborations is that different parties need different things. So every enhancement they make that flows back to the open-source community benefits everybody else, moving us all to a better place.”
“This one project has opened the doors in multiple aspects,” Jeff Parker said. “It’s been much more of an exchange of ideas beyond the Macomber Map.”
Asked what version 3.0 might look like, Legatt promises it will be exciting. “The best thing is this collaboration with SPP. We have proven to ourselves this philosophy works.”
The Macomber Map’s source code and more information can be found here. Legatt said he and others can provide additional information and training support to help others customize the map to serve their own needs.
WILMINGTON, Del. — The coalition of municipal utilities and cooperatives seeking a review of PJM’s capacity construct decided last week to make revisions before approaching stakeholders for approval of its problem statement and issue charge.
American Municipal Power’s Ed Tatum said the coalition is incorporating feedback from other stakeholders. It plans to present a revised proposal at October’s Markets and Reliability Committee meeting.
Tatum conducted an informal poll of the MRC attendees and found about a dozen members willing to say the proposal was too broad. No stakeholders raised their hands when Tatum asked if they believed PJM’s capacity construct was immune to the policy changes of its member states.
Stakeholders have previously expressed concern that energy policy decisions made by states — from renewable energy production goals to utility reregulation — might disrupt PJM’s complex marketplace.
Delaware Municipal Electric Corp., Old Dominion Electric Cooperative, the PJM Public Power Coalition, the Public Power Association of New Jersey and retailer Direct Energy have signed on as cosponsors of AMP’s initiative, which was introduced at the August MRC meeting. (See Proposal to Revisit PJM Capacity Model Receives Tepid Response.)
Stakeholders largely applauded withdrawal of the proposal last week, saying it requested too much change too soon. “We haven’t even gotten through the transition for [Capacity Performance] yet where we have full CP,” said Calpine’s David “Scarp” Scarpignato. “It seems premature to be discussing a whole new concept.”
Susan Bruce, who represents the PJM Industrial Customer Coalition, expressed appreciation for the coalition’s willingness to consider other perspectives on the issue. “No one would call us a defender of PJM capacity markets, but at the same time, the idea of additional uncertainty and change … was something, from a business perspective, that was difficult for our clients to get our head around,” she said.
Exelon’s Jason Barker said his company is unlikely to support redesigning the entire capacity market, likening it to rewriting the U.S. Constitution rather than just individual laws. But he said it could be supportive of “something that’s a little more surgical.”
“Given the strong push by local, state and federal governments to recognize the environmental impacts of our industry, that seems like something that’s ripe for discussion,” he said. “That seems like an issue that has not been addressed” by PJM’s current system.
Continuing the medical analogy, Marji Philips of Direct Energy argued the issue should be addressed comprehensively rather than in pieces.
“I’m sympathetic to the fact that people thought this was overreaching, but the reality is we are amending CP by small cuts. We were suggesting that we just operate on the patient holistically instead of limb by limb,” she said. “I have to say, every one of us is guilty around here of claiming that we want regulatory certainty until a rule is bad for us, and then we want it changed right away, so unfortunately our reality is there is no regulatory certainty.”
FERC last week approved CAISO’s plan to implement a new market mechanism designed to improve the real-time integration of the increasing volume of variable renewable energy resources coming on to the ISO’s system (ER16-2023).
This red line in this graph represents CAISO’s projected net load profile in April 2020, after California meets its 33% RPS. Net load represents total load minus output from wind and solar resources and provides an indication of the ISO’s ramping needs in the face of high solar penetration.
The flexible ramping product will also be incorporated into the CAISO-run Western Energy Imbalance Market.
The product will enable the ISO to procure resources equipped to quickly respond to dispatch orders and ramp output up or down in response to swings in forecasted net load between five-minute real-time market intervals.
Net load is the ISO’s gross load forecast minus output from intermittent wind and solar resources. The new product will also allow the grid operator to procure additional ramping capability to account for uncertainty in its forecasts.
The mechanism is intended to help CAISO prevent power balance violations that can result from mismatches between generation and load, a growing risk as California moves toward fulfilling its mandate to generate 50% of its electricity from intermittent renewable resources by 2030.
The procurement of ramping capability will be bundled into the real-time energy market run, rather than being administered through a separate bidding process. Under the mechanism, load or supply resources that increase the need for ramping capability between real-time market intervals will be charged for the flexible ramping product, while resources that decrease the need will receive a payment.
“Settling ramping capability directly between load or supply resources that consume ramping capability and those that provide ramping capability will help manage the ramping need by incentivizing load-serving entities to have a portfolio of both dispatchable and non-dispatchable resources that can follow their load profile,” CAISO said in its proposal.
The ISO says the ramping product is readily dispatchable, distinguishing it from an ancillary services product for standby “unloaded” capacity withheld from the market.
The product replaces CAISO’s flexible ramping constraint, an interim measure implemented in 2011 to ensure upward ramping capability of dispatchable resources in the 15-minute real-time unit commitment process.
That measure enabled the ISO to reserve uncommitted ramping capability from dispatchable resources that were not designated to provide contingency or regulation reserves and whose upward ramping capability was not forecast to be needed to meet real-time loads.
The new product addresses the ISO’s need for shorter dispatch intervals and downward ramping capability.
Bidding Process Rejected
In its ruling, the commission rejected a request by the Western Power Trading Forum, the Electric Power Supply Association and the Independent Energy Producers Association to subject procurement of the flexible ramping product to a bidding process similar to that used for ancillary services.
“That the flexible ramping product may meet the definition of an ancillary service, or be similar to other ancillary services, such as spinning reserves or regulation, does not require that CAISO procure it in the same manner as those other products,” the commission wrote.
FERC also denied a request by the Six Cities municipal utilities — Anaheim, Azusa, Banning, Colton, Pasadena and Riverside — that it condition its approval of the product proposal on successful completion of market simulations. The commission said the ISO already stated that it would not roll out the product until it completed simulations and addressed market participants’ concerns.
The commission rejected as beyond the scope of the proceeding a request by the California Energy Storage Alliance to lower the ramping product’s -$150 bid floor.
On Sept. 28, CAISO petitioned the commission to delay the effective date for the product implementation by one month until Nov. 1. The ISO said that it didn’t learn of FERC’s decision until hours after a Sept. 26 call scheduled to confirm the roll-out to market participants. A decision on the petition is pending.
MISO transmission owners will be taking a pay cut, as FERC ordered their 12.38% return on equity reduced by more than 2 percentage points.
The Wednesday order (EL14-12-002) affirms an administrative law judge’s initial decision in December. The TOs will now receive a 10.32% ROE. With incentives, the rate is not to exceed 11.35%. The previous 12.38% rate had been untouched since 2002.
The decision affects more than 20 TOs, which FERC said must issue refunds, with interest, from Nov. 12, 2013, through Feb. 11, 2015.
The companies are ALLETE, Ameren, Cleco Power, Duke Energy, Entergy, Indianapolis Power & Light, ITC Holdings, MidAmerican Energy, Montana-Dakota Utilities, Northern Indiana Public Service Co., Northern States Power, Otter Tail Power, Southern Indiana Gas & Electric Co. and their affiliates. The order puts American Transmission Co. back on an equal footing with other MISO TOs; the company was operating at a 12.2% ROE.
Source: ITC Holdings
Minnesota officials have estimated the cut will save ratepayers in the 15-state MISO footprint $200 million a year.
The commission said the 10.32% rate “represents the midpoint of the upper half of the zone of reasonableness” of 7.23 to 11.35%.
Setting the rate nearer the “midpoint of the zone of reasonableness [at 9.29%] could impair investment in transmission” and put MISO Transmission Expansion Plan investments at risk, the commission said.
“There is record evidence that a decrease in ROE of that magnitude — a 309-basis-point reduction from 12.38% to 9.29% — could undermine the ability of MISO TOs to attract capital for new investment in electric transmission,” FERC said.
A 9.29% ROE would also have been lower than all of the state-authorized rates of integrated electric utilities.
Challenge Filed in 2013
MISO’s major industrial customers challenged the region’s transmission rate in 2013, requesting it be cut to 9.15%.
FERC arrived at the new rate using a discounted cash flow model that analyzed about 40 similar companies with the same range of credit as the MISO TOs over six months. The commission said the midpoint of the zone of reasonableness was adjusted upward because of “unusual capital market conditions” attributed to temporarily low interest rates, historically low bond yields and the Federal Reserve holding record high bond amounts during the study period.
FERC said a “mechanical application” of the discounted cash flow model would fail to meet capital attraction standards under the Hope and Bluefield fair return standard. The commission adopted the two-step discounted cash flow method for setting ROEs in 2014’s Opinion 531. (See FERC Splits over ROE.)
A witness for the TOs had presented a capital asset pricing analysis that produced an ROE range of 7.50 to 12.61%, with a midpoint value of 10.06%. FERC said the analysis, along with expected earnings and risk premium analyses supplied by the TOs, persuaded it that a higher midpoint on its own range — produced under the discounted cash flow analysis — was in order.
FERC also dismissed protests that it had not provided evidence to support its north-of-the-midpoint decision, saying it had “discretion to use its judgment in weighing factors specific to a given proceeding to determine where within the zone of reasonableness the final base ROE should be placed.”
The commission also declined transmission customers’ request to reduce the base rates of utilities with 55% equity by 20 basis points.
MISO and independent power producers asked FERC on Wednesday to dismiss a complaint by transmission customers seeking to overturn the results of the RTO’s 2016/17 Planning Resource Auction (PRA).
The Sept. 8 complaint by the Coalition of MISO Transmission Customers claims MISO misapplied its Tariff, causing the South-North transfer limit to bind sooner that it should have, driving up prices in MISO North (EL16-112).
Prices in Zone 1 cleared at $19.72/MW-day and Zones 2, 3, 4, 5, 6 and 7 each cleared at $72/MW-day after MISO limited capacity imports from MISO South to 876 MW. MISO South cleared at $2.99/MW-day. (See MISO’s 4th Capacity Auction Results in Disparity.)
On Wednesday, MISO responded to the complaint, saying it is a “several-month-late challenge … and fails to demonstrate any Tariff violation.” MISO said it calculated the constraint properly and that the coalition raised no objections when the results were shared with stakeholders nearly a month before the auction.
The Independent Market Monitor filed comments backing MISO, saying the customers failed “to identify a single provision of the Tariff that MISO failed to abide by when MISO calculated” the constraint.
The Electric Power Supply Association filed a protest saying the complaint should be dismissed because it is based solely on the 2016/17 PRA results. “The [coalition] has not demonstrated any violation or wrongdoing as required under FERC Rule 206 that would support its request to unwind the results of the 2016/17 PRA,” the group wrote.
Dynegy also called for FERC to reject the complaint, which it said “ignores express provisions of the Tariff and the settlement” between MISO and SPP over the transfer limit.
Illinois Attorney General Lisa Madigan filed comments supporting the complaint. Eight state regulatory bodies are among the more than 35 intervenors as of this week. The Organization of MISO States also filed to intervene.
Excess Capacity Trapped?
The complaint was filed by McNees Wallace & Nurick, which represents industrial customers. The coalition said it is an ad hoc association of large industrial customers that consume more than 8 billion kWh of electricity annually.
The customers claim Entergy’s territories in Zones 8, 9 and 10 had excess capacity, but MISO’s transfer limit caused it to become trapped in the South, leading to the higher prices in the Northern zones. They argue the limit should have been increased by at least 206 MW, which would have led to north prices clearing at just $20/MW-day.
The coalition asked FERC to reset Northern clearing prices to $20/MW-day and order MISO to issue refunds from June 1, the beginning of the planning year. The customers also asked that FERC conduct an audit of the Monitor’s approval of offers in the PRA, alleging that the Monitor did not rein in unreasonably high going-forward costs.
Currently, MISO subtracts firm reservations from the 2,500-MW South-North limit negotiated with SPP. The customers argue those firm reservations are never going to be used in full.
“The firm transmission service reservations of 1,624 MW that MISO deducted from the available system capacity usage of 2,500 MW do not reflect actual power transfers from the MISO South to MISO Midwest region. Rather, the deductions reflect firm service that MISO has agreed to provide NRG Energy Inc. in order to allow NRG capacity resources located in the MISO South region to qualify as a capacity resource in PJM,” the complaint said. “There is no evidence that NRG is, in fact, using this firm transmission reservation during the 2016/17 planning year to actually flow energy from MISO South to MISO Midwest in such a way that NRG’s full transmission reservation should be deducted from the 2,500 MW total.”
The complainants say MISO “overstates the impact of firm transmission reservations” and does not consider “the actual or reasonably likely use of the firm transmission reservation.” The customers said the transfer limit problem was recognized in the IMM’s 2015 State of the Market report.
In its own filing Wednesday, NRG said that while “the MISO Tariff should expressly address how internal transmission constraints should be modeled, there is no evidence that MISO violated its existing Tariff.” If the commission grants the coalition’s request for relief, NRG said, it should require MISO to calculate the sub-regional constraints by only deducting pseudo-ties from the 2,500-MW limit.
The coalition asked FERC to fast-track its complaint, saying it wants a decision in time to implement changes before next year’s PRA.
Changes Being Discussed
MISO is already considering adjusting the South-North transfer limit in planning for next year’s auction. A draft proposal on the 2017/18 sub-regional limit is on the agenda for the Oct. 5 Resource Adequacy Subcommittee meeting. (See MISO Proposes Study to Measure Benefits of New North-South Tx.)
In its response to FERC, MISO said the “complaint raises more problems than it alleges to solve.”
“It also requires the assumption that market participants will act against their own economic interest in scheduling transmission,” the RTO said.
NextEra Energy and Energy Future Holdings have assured Texas regulators they won’t be constrained in their review of the NextEra’s agreement to purchase Texas utility Oncor, which includes a $275 million termination fee.
During an update hearing Sept. 26 on EFH’s emergence from Chapter 11 bankruptcy (14-10979-CSS), Judge Christopher S. Sontchi said he had filed a joint letter from EFH and NextEra addressing the Public Utility Commission of Texas’ concerns.
PUCT Commissioner Ken Anderson said during a Sept. 22 open meeting that the termination fee “appears to be an effort to really tie the commission’s hands in the proceeding,” as it would allow NextEra to cancel the deal if the commission imposed “overly burdensome” conditions. Anderson also called the fee an “improper attempt to constrain the commission.” (See Texas PUC Expresses Doubts over NextEra-Oncor Deal.)
NextEra has proposed buying Oncor, EFH’s transmission business, for $18.7 billion.
According to the letter, “NextEra is not entitled to a termination fee under the merger agreement if NextEra Energy terminates the merger agreement because the commission either approves the merger agreement transaction with ‘burdensome conditions’ … or does not approve the merger agreement transaction.”
NextEra and EFH said the termination fee would be triggered only if EFH or Energy Future Intermediate Holding Co., Oncor’s direct parent, terminate the merger agreement. The companies wrote they “would like to make clear that, in any event, NextEra will not seek to collect any portion of the termination fee contemplated by the merger agreement in the event it terminates the agreement.”
Sontchi opened Monday’s hearing by quoting from the transcript of the PUC meeting.
“I believe [the] letter addresses the concerns raised by Commissioner Anderson,” Sontchi said. He said any possible triggering of the termination fee is “an issue for the bankruptcy court, and not for the PUCT and ratepayers.”
The PUCT’s approval is just one of several favorable regulatory rulings NextEra and EFH must secure before closing the deal.
FERC rejected for a second time Arizona Public Service’s proposed rules over how external resources can use dynamic scheduling to participate in the Western Energy Imbalance Market (EIM).
The commission ruled that APS’ tariff changes failed to comply with an April 29 directive to “clarify that dynamically scheduled external resources are not required to enter into commercial contracts with APS in order to participate in the EIM” (ER16-938).
FERC’s Sept. 26 order affirmed that APS could require dynamically scheduled external resources to have the technical capability to provide load-following and regulation services, but it said APS could not condition eligibility on their provision of the services.
“Consistent with the April 29 order, we affirm that APS may not condition a dynamically scheduled external resource’s participation in the EIM on its contracting to provide load-following or regulation service to APS,” the commission wrote.
Arizona Public Service’s Hassayampa-Gila 500 kV line serves the utility’s Phoenix load center. Photo Source: AECOM
EIM members PacifiCorp and NV Energy currently restrict external EIM participation to only those resources pseudo-tied into their respective balancing areas. While APS will allow EIM transfers via pseudo-ties, the utility elected to further extend market participation to those external resources equipped to dynamically schedule into its transmission network.
But APS required that dynamically scheduled resources meet the tariff-defined qualifications of a Balancing Authority Area Resource (BAAR).
Under the EIM’s rules, a BAAR designation denotes a resource’s eligibility to contribute to an EIM participant’s “available balancing capacity” — the verifiable operating reserves a market participant carries to ensure that it isn’t leaning on the EIM to meet its capacity requirements.
APS’ tariff proposal included requirements that a BAAR resource be unit-specific rather than an unspecified system resource and be able to provide regulation and load-following services to help the utility to meet its resource adequacy criteria.
The proposal also required that a BAAR either be owned by APS or under contract with the utility for energy, ancillary services or capacity.
In its April order, the commission objected to that last provision and directed the utility to clarify that external resources do not have to qualify as a BAAR in order to transact with the EIM.
Instead of inserting a new provision covering dynamically scheduled resources, APS’ compliance filing redefined BAARs to exclude the ownership and contracting requirements. The utility expressed concern that removing the BAAR provision could enable resources to circumvent operational and technical specifications applicable to all resources participating in the EIM — specifications already approved by FERC. APS also contended that, by revising the definition to eliminate the commercial relationship requirement, it had complied with FERC’s directive.
The commission disagreed, saying that “APS has failed to comply with the directive to remove the requirement that an external resource qualify as a BAAR to be eligible to participate via dynamic scheduling.”
The BAAR qualification is “commercial in nature,” given that APS’ tariff still required any resource designated as such to provide load-following and regulation service, the commission found.
Market participants’ transactions in the EIM are expected to be voluntary and not subject to such obligations, FERC said. While an external resource participating in the EIM can enter a contract to provide ancillary services to APS, it cannot be required to do so, the commission said.
The commission ordered APS to restore the original commercial language to the BAAR qualification in order to ensure that APS and CAISO, the EIM’s operator, can identify those resources that contribute to the utility’s EIM capacity requirement.
“In the context of the available balancing capacity mechanism, it is crucial that APS either own or have a contractual right to call upon the capacity for regulation or load-following services from a designated resource,” the commission wrote.
Other elements of the ruling include:
FERC affirmed APS’s requirement that external resources participating in the EIM via dynamic scheduling be capable of responding on a unit-specific basis. “As APS notes, requiring that resources be unit-specific, will ensure that APS can distinguish an external resource’s dynamic schedule from an intertie bid,” FERC wrote.
The commission denied a rehearing request by the Southwest Public Power Agency (SPPA) over its approval of APS’s proposal to adopt EIM pricing of transmission losses without giving transmission customers the option of self-supplying losses within the same hour. The commission said FERC precedent does not “preclude the use of a financial settlement mechanism to the exclusion of in-kind replacement of losses.”
The commission directed APS to submit a compliance filing providing more details about the timing and duration of its evaluation of operating reserve obligation payments and credits from CAISO. SPPA contended that APS has not committed to ensuring that customers will share in the benefits of reduced reserve costs resulting from EIM participation.
CAISO’s Board of Governors has approved a proposal to extend most of the temporary Tariff provisions the ISO implemented in June in response to natural gas pipeline restrictions stemming from the closure of the Aliso Canyon storage facility.
The ISO will now seek expedited approval from FERC to extend the measures through Nov. 30, 2017 — a year beyond the original sunset date.
While the region weathered the summer without grid emergencies, the ISO has identified a continued risk of gas shortages for generators in the face of limited operations at Aliso Canyon during the winter, according to Cathleen Colbert, senior market design and regulatory policy developer at CAISO.
“The goal [of the extension is] to determine what provisions were needed for winter reliability,” Colbert said during a Sept. 26 call to discuss a draft final proposal to renew the measures.
The Aliso Canyon gas storage facility was closed last October after inspectors discovered a massive methane leak. Photo Source: California Department of Emergency Services
The provisions were geared to helping Southern California gas-fired generators manage their gas burns to avoid system-balancing penalties and enable them recover gas costs after the fact, while providing the ISO the flexibility to move energy into the region during periods when gas supplies became constrained.
During winter, electric load is not the “primary driver” of gas imbalances, as the bulk of gas demand shifts from “non-core” gas customers such as electric generators to “core” residential heating customers, Greg Cook, CAISO director of market and infrastructure policy, told the board during an Oct. 3 call.
“It’s good to note that the non-core generators are the first to be curtailed in the event that we do not have sufficient on-system gas to meet the core and non-core demand,” Cook said.
Among the measures CAISO proposes to extend:
The release of advisory schedules by CAISO two days ahead of an operating day to help scheduling coordinators plan for gas procurement further in advance.
The ability of generators to reflect gas cost expectations into day-ahead bids by using an approximation of next-day gas prices, which are published after the ISO’s morning day-ahead market runs. ISO rules typically require generators to incorporate the previous day’s next-day gas prices into energy bids.
A gas adder and an after-the-fact cost recovery mechanism for generators connected to the Southern California Gas system to tie cost recovery and penalties to same-day gas prices rather than day-ahead gas indices.
Authority of the ISO to manually override its “dynamic competitive path” assessment when it determines that the transmission path is no longer competitive in the face of a gas constraint.
Suspension of virtual bidding in circumstances when CAISO determines the practice could produce market inefficiencies.
CAISO also seeks to refine a provision allowing it to enforce a market constraint that limits the minimum and maximum amount of gas that can be burned by generators in the affected area during periods of restricted gas supply. The refinement would set a limit on the maximum burn only.
One key provision from the original Aliso Canyon plan is on the chopping block: a measure that allows the ISO to reserve transmission capability on the Path 26 transmission line linking the Pacific Gas and Electric and Southern California Edison service territories in order to ensure adequate delivery into the southern part of the state during gas restrictions.
CAISO says it no longer needs that capability because Peak Reliability, the reliability coordinator for most of the Western Interconnection, recently modified its system operating limit (SOL) methodology to allow Path 26 to exceed its capacity rating under emergency conditions.
One board member expressed concern that the expanded limit would provide the ISO with only a short timeframe in which to respond to a gas-driven grid emergency before being required to return the line to its SOL.
“Why wouldn’t it be prudent to retain the internal capability?” asked board member Dave Olsen. “Are we giving up flexibility it would be prudent to retain?”
Cook responded that the new SOL methodology provides CAISO with the reliability protections it was seeking when it originally proposed the Path 26 provision — which had prompted concerns from some market participants about the impact on the ISO’s congestion revenue rights market.
“Now that we have this increased flexibility provided by Peak [Reliability] that helps deal with the reliability concern, it’s probably best to retire that provision so that those market concerns could go away,” Cook said.
The ISO plans to file the updated Aliso Canyon proposal with FERC in mid-October.
WASHINGTON — Obama administration lawyers squared off with opponents of the Clean Power Plan last week, as oral arguments scheduled for less than four hours stretched over seven.
We won’t know for months how those whose opinions count — 10 judges of the D.C. Circuit Court of Appeals — scored the arguments. And whatever they decide will inevitably be reviewed by the Supreme Court.
But based on the judges’ questions and comments, four of the five challenges — a Constitutional issue; a bill drafting error; EPA’s alleged failure to provide sufficient notice of changes between the original and final plan; and a claim that it relied on dubious assumptions on the growth of renewables — appeared to have little chance of prevailing.
‘Beyond the Fence Line’
For opponents, the best hope of overturning the CPP is likely the argument that was presented first, led by West Virginia Solicitor General Elbert Lin.
Lin contended that EPA overreached its authority by creating CO2 emission limits that coal-fired generators can’t meet, forcing a “generation switch” to natural gas and renewables.
“Ninety-six percent of [West Virginia’s] power comes from coal,” he said. The rule, he said, was “clearly designed to make us change our generation source.”
Judge Brett M. Kavanaugh evidenced the most sympathy for the “beyond-the-fence-line” argument.
The CPP seeks to cut the power sector’s carbon emissions by 32% by 2030, compared with 2005 levels. It uses two different CO2 emission rates to define the “best system of emission reduction,” one for coal-steam and oil-steam plants and a second for natural gas plants. The agency said compliance can be achieved through improving generators’ efficiency (Building Block one) and shifting generation from coal to lower-emitting natural gas plants (Building Block two) and zero‐emitting renewables (Building Block three).
Citing what he said was at least three decades of Supreme Court precedent, Kavanaugh said EPA needed explicit Congressional approval for the magnitude of the changes contemplated by the CPP. “This is a huge case,” he said. EPA is “fundamentally transforming the industry.”
Justice Department attorney Eric Hostetler, speaking for EPA, insisted the agency is entitled to deference under the Supreme Court’s Chevron decision, which held that courts should defer to agencies’ interpretations of the laws they are charged with enforcing unless the court finds their actions unreasonable.
“This is far from the first time EPA has relied on generation-shifting,” he said.
EPA’s rule is a “proper and sensible” response for the “most urgent threat that our country has ever faced,” Hostetler said.
Judge Thomas B. Griffith also expressed concern over EPA’s strategy. “It doesn’t help that the president said, ‘If Congress doesn’t act, I will,’” he said.
Judge Janice Rogers Brown asked why EPA wasn’t regulating under Clean Air Act Section 115 instead of going through “linguistic gymnastics” under Section 111(d).
While his questions indicated he may vote to overturn the CPP, Kavanaugh made clear he is no climate denier. He called EPA’s policy “laudable,” saying “I understand the climate is warming.”
He added that “I understand the frustration with Congress,” which has not been able to reach agreement on climate policy.
But he also expressed sympathy for coal states such as West Virginia, saying that national policy, authored by Congress, could incorporate a safety net such as public assistance and job training.
“Whole communities are going to be left behind,” he said, addressing EPA’s lawyers. “If you do it, all the people who will be left back will [remain] left back.”
It’s questionable that Kavanaugh will be able to carry a majority in overturning the rule, however. Less than a minute into Lin’s argument, Griffith interrupted to challenge his claim that the rule would be “transformative.”
He noted that EPA estimates that the amount of coal-fired generation will still be 27.4% of total generation in 2030 — only 5.4% less than projected without the rule. “That hardly sounds transformative,” Griffith said.
Judge David S. Tatel also expressed skepticism. The term “best system of emission reduction” is “an awful broad grant” from Congress, he said. “It says best system of emissions reduction,” he repeated twice, emphasizing “system.”
Emission Limit a ‘Lever’
Judges Cornelia T.L. Pillard and Patricia A. Millett also appeared sympathetic to EPA’s case.
Pillard asked how the CPP is that different from previous EPA rulemakings, which required coal-fired generators to add equipment such as scrubbers.
Peter D. Keisler, representing industry and labor challengers, said EPA failed to take into account the remaining useful life of coal plants. He insisted EPA’s authority is limited to “operation of the source” and doesn’t “extend to the investment decisions of the owner.”
“The emission limit here is a lever” to force subsidization of renewables, Keisler said. Renewables, he said, are not “sources.”
Millett asked whether EPA could force dual-fuel plants to make gas primary. Yes, Keisler responded.
Three judges nominated by President Obama to the D.C. Circuit Court of Appeals in 2013 are among 10 that will rule on the EPA Clean Power Plan. From left are Robert Leon Wilkins, Cornelia “Nina” Pillard and Patricia Ann Millett. Source: The White House
Judge Sri Srinivasan cited the Supreme Court’s 2011 ruling in American Electric Power v. Connecticut, which he said gave EPA a guide to how to regulate CO2 from power plants. But Srinivasan also saw a distinction between requiring coal plants to add scrubbers and requiring them to seek aid from other generators.
“The word ‘system’ is a capacious term,” responded Hostetler. He rejected opponents’ complaint that the agency was relying on a rarely invoked section of the Clean Air Act.
“You might not use a fire extinguisher until your house is burning down,” Hostetler said. “That doesn’t mean you shouldn’t use it.”
He also insisted the rule “doesn’t require any subsidies,” noting other compliance methods such as co-firing with natural gas.
Brown asked several questions but staked no clear position in the arguments. Judge Karen LeCraft Henderson said little and Judge Robert L. Wilkins was silent.
Although the D.C. Circuit’s decision is likely to be reviewed by the Supreme Court, its ruling would prevail if the high court — currently shorthanded following the death of Justice Antonin Scalia — deadlocks 4-4.
Mutually Exclusive? Section 111(d) vs. 112
One curious wrinkle in the legal questions concerning the CPP is a drafting error that resulted from the House of Representatives and Senate approving two different versions of Section 111(d) when it amended the Clean Air Act in 1990.
The section has long been used to regulate pollution from existing sources that is not covered under other sections of the CAA.
Opponents say the House’s version of the amendment barred EPA from using the section if the agency was already regulating power plant emissions under another section of the CAA. The Senate’s version, however, included no such prohibition. The two were never reconciled and President George H.W. Bush signed the revision into law with both amendments.
EPA regulates power plant emissions such as mercury, acid gases and other hazardous air pollutants (HAPs) under Section 112.
Lin said he believes the House version was the “substantive amendment” and the Senate’s was a clerical error. But he said the challengers should succeed even if the court decided to give the House and Senate versions equal weight. “The way to reconcile them … is to give both amendments maximum effect,” he said.
Judge Kavanaugh sided with the plaintiffs, saying he believed the House amendment applies.
But the other judges who spoke on the matter expressed no support for the opponents’ interpretation.
Srinivasan said that if both amendments were considered, EPA would be given the right to regulate under 111(d). “It seems like it’s inclusive and not exclusive,” he said.
Allison D. Wood, representing the non-state plaintiffs, also insisted the House exclusion should prevail. She said most, if not all, coal plants are already regulated under Section 112.
“Under your theory you can’t regulate existing sources [for CO2] at all,” responded Judge Tatel.
“I just don’t see the logic of that,” added Judge Pillard.
Justice Department attorney Amanda S. Berman said a “contextual reading is the best reading of this ambiguous text,” asking the judges to side with EPA’s “reasonable middle course.”
Adopting the House version would be a “dramatic downsizing ” of 111(d), she said.
“I don’t think Congress intended something so drastic,” she said, adding that electric generators are already regulated under “at least five sections” of the CAA.
Sean Donohue, representing environmental and public health intervenors, said the plaintiffs’ arguments were an attack on the Supreme Court’s 2007 ruling in Massachusetts v. EPA, in which the court ruled that the CAA applies to CO2 emissions from automobiles.
The court followed that up in 2011 with its ruling in American Electric Power v. Connecticut, in which the court barred common law nuisance complaints over power generators’ carbon emissions, saying it was EPA’s response to regulate the emissions under section 111(d).
Constitutional Issues
After lunch, the judges returned to hear plaintiffs’ constitutional challenge, with petitioners’ attorney David Rivkin Jr. complaining that the CPP “commandeers” state officials to implement the rule in violation of states’ rights under the separation of powers clause of the 10th Amendment.
Judges Griffith and Tatel challenged Rivkin, with Griffith asking how the CPP differed from any other federal regulation that requires state action.
Tatel, who is blind, said Rivkin’s logic would also void the Americans with Disabilities Act. Compliance with the ADA, he said, requires local governments to exercise their police powers to issue building permits for wheelchair ramps and curb cuts.
Harvard University constitutional law professor Lawrence H. Tribe supported Rivkin’s argument on behalf of the non-state petitioners. Tribe noted that the Senate had rejected cap-and-trade legislation in 2010. EPA’s supporters “are asking you to bail out Congress,” he said.
Judge Millett challenged Tribe, appearing sympathetic to EPA’s argument that rejecting the CPP would amount to a “bait and switch” after the AEP ruling.
Justice department attorney Berman called the CPP “bread and butter cooperative federalism,” saying the plaintiffs’ arguments would “take down much of the Clean Air Act.”
She said there was nothing in the record to suggest the “parade of horribles” opponents have predicted: price spikes, blackouts and jails being forced to release prisoners.
Throughout the afternoon’s arguments, only Kavanaugh consistently expressed support for the challengers. Several times, he cited the Supreme Court’s 2014 ruling in Bond v. U.S., which he said established limits to the deference granted executive agencies under Chevron. The court ruled unanimously that a woman who attempted to poison a romantic rival could not be prosecuted under Section 229 of the Chemical Weapons Convention Implementation Act of 1998. The court said there must be “a clear indication that Congress intended to reach purely local crimes before interpreting Section 229’s expansive language in a way that intrudes on the states’ police power.”
‘Notice’ Issue
Plaintiffs also complained that EPA failed to provide sufficient notice of its proposal because the final rule, issued in August 2015, included provisions not mentioned in the draft rule a year earlier.
The plan uses two different CO2 emission rates to define the best system of emission reduction, one for coal-steam and oil-steam plants and a second for natural gas plants. The draft rule had proposed a blended rate. (See Revised Clean Power Plan Allows More Time, Sets Higher Targets.)
John Campbell Barker, representing state petitioners, said EPA should be required to withdraw the rule and restart the process, as it did in withdrawing its 2012 draft rule on CO2 emissions from new electric generators.
The Justice Department’s Norman L. Rave said EPA changed the way it calculated state targets because it was “inundated” with comments objecting to state-by-state rates. Critics said the original plan would mean states that had done nothing to curb greenhouse gas emissions would have less stringent rates than those that had already taken action.
Rave said there was no shortage of opportunities to comment on the rule, noting the more than 600 meetings EPA held with stakeholders. The agency said it received more than 4.3 million comments in total.
He also cited the notice of data availability EPA issued between the draft and final rule, which signaled that it was considering factoring in states’ ability to tap out-of-state renewable resources to meet their targets. (See EPA Signals Flexibility on Interim Carbon Targets, Coal-Gas Shift.)
Rave said the petitioners had failed to clear any of the three tests needed to overturn the rule on notice grounds and had not identified any data they would have offered to EPA had they received more notice.
Record-Based Issues
The final arguments dealt with plaintiffs’ claims that EPA failed to demonstrate that its proposed compliance measures are achievable.
William Brownell, representing the non-state petitioners, said the agency failed to provide “real-world proof” that generation-shifting will work, saying the CPP envisioned “something entirely different in terms of magnitude and character” than current utility operations under least-cost security-constrained economic dispatch.
He challenged the rule’s reliance on combined cycle plants operating at 75% capacity factors, saying only 15% of them currently run that often. He also mocked EPA’s projections for the growth in wind generation, saying the agency assumed seven years of growth at the rate seen in 2012, when growth spiked because of the impending expiration of the Production Tax Credit.
Brett Kavanaugh is sworn in as a D.C. Circuit Court judge by Supreme Court Justice Anthony Kennedy in 2006, as his wife, Ashley, and President George W. Bush look on. Source: The White House
Millett said EPA was projecting from existing trends. “They didn’t pull these numbers out of thin air,” she said.
Wisconsin Solicitor General Misha Tseytlin said the court must determine whether the plan is achievable under the “most adverse circumstances.” That means, he said, considering the possibility that California and other states with excess renewables will “lock out” states that need them by setting onerous requirements.
“If that happens, all of EPA’s numbers break,” he said.
Justice Department attorney Brian Lynk responded that EPA was conservative in “multiple ways” in its projections, citing its assumptions on heat rates and renewable growth.
Millett asked how the agency would respond if the rule was unachievable for some states.
“I have no doubt that EPA would be amenable to consult with that state,” Lynk said. And if states were not satisfied with EPA’s response, Rave said, “I’m sure there would be an opportunity for them to come to court.”
Kevin Poloncarz, representing Calpine and other power companies supporting the rule, said the 75% capacity factor for combined cycle plants was “eminently reasonable.”
The reason such dramatic fuel switching hasn’t happened in the past, he said, is because the cost of carbon hasn’t been included in economic dispatch calculations.
EPA shouldn’t be required to take a Balkanized state-by-state approach to regulating the industry, he insisted. “Electricity,” he said, “doesn’t observe state boundaries.”
WASHINGTON — After four years, Commissioner Tony Clark’s last day at FERC will be Sept. 30, he said at his last, and 47th, open meeting Thursday.
Tony Clark received parting gifts from each of his fellow commissioners, including a lookalike bobblehead from Chairman Norman Bay. Source: Norman Bay
Clark said that given the date would be the end of a week, pay period, quarter and the federal fiscal year, “this may be God’s way of telling me that that’s probably the right day to move on.”
The remaining days of his tenure will be mostly spent emptying his office, he said, though he would be available in case a quorum (a minimum of three commissioners) is needed for decisions in which another commissioner could not participate. Chairman Norman Bay recuses himself from issues he dealt with as head of the commission’s Office of Enforcement, and Commissioner Colette Honorable recuses herself from matters that were before her as a regulator in Arkansas.
Bay said he did not foresee any quorum problems following Clark’s official departure. “I feel like we’re on top of that. We’ve known for some time that Commissioner Clark would be leaving, and so we’ve been planning for the completion of any orders where his vote would be required.” Clark indicated in January that he would not seek another term.
A former North Dakota regulator, Clark is the lone Republican on the commission after the departure of Philip Moeller last year.
Clark’s three Democratic colleagues praised him for his meticulous thinking and ability to work through disagreements civilly.
“You’ve been an outstanding public servant,” Bay said. “I know that every place you’ve gone to, you have made [it] better with your thoughtfulness, your encyclopedic knowledge of policy, your reasonableness and your collegiality.”
Commissioner Cheryl LaFleur joked about her disappointment at not being able to influence Clark more after he joined the commission. “From the very first day you walked in, you were always on top of the issues, crystal clear in your thinking, pragmatic and very, very decisive,” she said.
“I have enjoyed working with him very much, even though we come from different places,” Honorable said. “But in many ways, we have been quite a lot alike, I would say, in terms of … our commitment to serving.”
Honorable joked that they agreed on many things, but not on their favorite president. Her parting gift to him was a mug featuring the Democratic nominees for president and vice president, Hillary Clinton and Tim Kaine. Clark promptly hid the mug behind his name plate.
“Hopefully at FERC, people see an agency in a town that is sometimes dysfunctional, but an agency that I think is very functional,” Clark said. “Although we don’t agree on every item — that’s to be expected — … where we do disagree, we can do so without being disagreeable.”
Clark was nominated by President Obama after Sen. Mitch McConnell (R-Ky.) forwarded his name to the White House. He said he has not heard anything about Obama nominating replacements for the two GOP vacancies. He speculated that new commissioners may be among a group of nominees submitted by the next president.
The best chance for a nominee to get confirmed by the Senate would be during the lame-duck session after the November elections as part of a package of nominees, said Dan Blair, CEO of the National Academy of Public Administration, a Congressionally chartered think tank that provides advice to public officials.
But there are many different permutations of what could happen based on the results of both the presidential and senatorial elections. For example, Blair said, if Republican presidential nominee Donald Trump wins the White House, McConnell, the majority leader, could defer to him on who should go to FERC.
Many federal agencies suffer member shortages while the White House and Senate negotiate over nominations. Obama may be holding out on nominating anyone to FERC until he can reach an agreement on a Democratic nominee for a different agency, Blair said. “There’s a lot of horse trading that goes on behind the scenes. You have to look outside the commission.”
When asked if he had heard anything about reinforcements, Bay said only, “The nomination process I leave to the White House and to the Senate.”
Nicole Daigle, communications director for the Senate Energy and Natural Resources Committee, said Chairman Lisa Murkowski (R-Alaska) “is concerned that FERC will be down to three commissioners.”
“It is important that we have a full complement of members on the commission,” Daigle said in a statement.
Daigle did not respond when asked whether Murkowski had suggested anyone to McConnell or whether McConnell had forwarded any names to Obama.
A spokesman for McConnell said the senator would not comment until the president submitted a nomination. The White House did not respond to a request for comment.
Clark said he was going to take some time to relax before spending the remainder of October thinking about his next job.
