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November 13, 2024

Western EIM Nears $2B in Total Benefits

CAISO’s Western Energy Imbalance Market closed 2021 with yearly economic benefits that were more than double those of any prior year, bringing the market’s cumulative savings for its participants close to $2 billion since it launched in 2014.

“The Western EIM’s outstanding performance last year provides further tangible evidence of the value of broad regional market coordination,” CAISO CEO Elliot Mainzer said in a statement announcing the results.

The record figures were a product of extreme weather in the West, high natural gas prices and more entities joining the EIM, CAISO said.

The fourth-quarter results announced this week showed benefits of $204 million for the WEIM’s 15 participants, which span much of the Western Interconnection. That brought last year’s annual benefits to $739 million, far exceeding 2020’s previous record of $325 million. The record year swelled the market’s total benefits to $1.93 billion.

Much of last year’s benefits came in the third quarter, which by itself exceeded the total annual benefits of $297 million in 2019 and came close to 2020’s annual figure. The unprecedented savings of $301 million in Q3 2021 resulted from summer heat waves in California, the Desert Southwest and the Pacific Northwest that triggered high demand amid tight supply, pushing electricity prices higher.

Transfers between WEIM balancing authority areas (BAA) provide access to lower-cost supply in the 15-minute and real-time markets, saving many participants millions of dollars per quarter. The Balancing Authority of Northern California (BANC), for instance, accumulated $72.5 million in benefits in Q3, while CAISO saved $54 million.

Q4’s winners included CAISO, with $55.5 million in benefits, and PacifiCorp, which saw nearly $40 million in benefits.

Cumulative economic benefits (CAISO) Content.jpgA graph shows quarterly and cumulative benefits for WEIM participants since the market started in 2014. | CAISO

The WEIM provides a market for excess renewable resources such as wind and solar that would otherwise be curtailed.

The market saw its largest yearly expansion in 2021. New members that joined included the Los Angeles Department of Water and Power, Public Service Company of New Mexico, NorthWestern Energy, Turlock Irrigation District and BANC members Modesto Irrigation District, City of Redding and Western Area Power Administration-Sierra Nevada Region.

The expansion boosted benefits for all participants, the ISO said.

“The quarterly benefits have grown over time as a result of the participation of new BAAs, which results in benefits for both the individual BAA but also compounds the benefits to adjacent BAAs through additional transfers,” it said in its fourth-quarter report.

Defections, Delays

This week’s upbeat news for CAISO arrived days after three more Colorado utilities — Xcel Energy’s Public Service Company of Colorado, Platte River Power Authority and Black Hills Colorado Electric — said they had decided not to join the WEIM as previously planned and would instead join SPP’s Western Energy Imbalance Service, a smaller but growing competitor. (See Colorado Utilities Choose WEIS over WEIM.)

Colorado Springs Utility had announced last May it would join the WEIS instead of the WEIM. A month later, the other Colorado utilities paused their plans to join the WEIM to explore other options. The decision made Colorado the only state in the Western Interconnection without any active or planned WEIM participants.

The Bonneville Power Authority, which was scheduled to go live in the WEIM on March 2, said last week it would postpone joining until May 3 to address technical and training issues among its large base of generation and transmission customers, most of which are publicly owned utilities. (See BPA Postpones Western EIM Entry by 2 Months.)

Two other Pacific Northwest utilities, Avista and Tacoma Power, said BPA’s decision would not delay their market entry on March 2. Tucson Electric Power is also scheduled to join the WEIM this year. Next year’s planned entrants are Avangrid, El Paso Electric and the Western Area Power Administration’s Desert Southwest Region.

By next year, WEIM participants are expected to represent nearly 80% of load in the Western Interconnection.

CAISO is going through a stakeholder process to see if it can create an extended day-ahead market for the WEIM, further expanding the capabilities of the market.

MISO Begins Dynamic Line Ratings Work

MISO foresees a relatively easy shift to incorporate transmission owners’ dynamic line ratings but says it will have to settle on a weather forecasting method.

Operations manager Brian Kiefer said MISO’s real-time systems can comfortably host transmission lines’ varied ratings required under FERC Order 881.

“We’re in good shape there,” he told stakeholders during a Jan. 28 Reliability Subcommittee meeting.

Order 881 requires transmission providers to establish ambient-adjusted line ratings into transmission service and near-term markets. (See FERC Orders End to Static Tx Line Ratings.)

Kiefer said the commission’s requirement for 10 days of hourly forecasted ratings for short-term transmission requests will be new for the industry. Stakeholders asked whether TOs would have to furnish their own temperature forecasts or whether the RTO will provide that data to make ratings forecasts more uniform.

“We’re looking at what sort of data we can provide to our members to make implementation easier, and that includes weather data,” Kiefer said.

He said MISO will probably create a new ratings data interface for its TOs.

Reliability Subcommittee Chair Ray McCausland predicted that stakeholders will form a task team to assign responsibilities and hammer out compliance details.  

Kiefer said he expects FERC will require dynamic line ratings be implemented by summer 2025. He said MISO will likely form a pilot project in the meantime to implement TOs’ temperature-adjusted ratings as they are finalized.

The grid operator has said “increasingly complex operating days require more complete understanding of equipment reliability” under emergency line ratings. MISO also said more than 60% of ratings for transmission facilities are “identical ratings across severity categories,” meaning some TOs’ normal and emergency ratings have the same values.  

Multiple stakeholders have told the RTO that reliability should come first when applying dynamic transmission ratings. Stakeholders have also warned that raising ratings on one facility might have downstream impacts on other transmission facilities in the system.

Stacy Hebert, a TO representative, has also said that implementing ambient adjusted ratings sets is not a guarantee that a facility won’t bind.  

Staff and TOs last year identified about 500 candidate facilities that have bound on congestion quarter-to-quarter. About 25% of those facilities are already in an ambient-adjusted ratings program.

MISO Independent Market Monitor David Patton has extolled the benefits of ambient adjusted transmission ratings several times in public stakeholder meetings. He has said the grid operator could realize several hundred million dollars in annual savings if TOs fully implemented the ratings.

He reported that MISO’s real-time congestion costs more than doubled from late 2020 to late 2021 as more transmission elements began binding year-over-year. Patton attributed the sharp increase to the costs of re-dispatching the system to manage constraints caused by high wind output and natural gas prices. Ambient adjusted ratings and a plan for grid reconfigurations could ease constraints, he said.

Patton has also rejected the idea that TOs can’t use dynamic ratings on transformers. Last year he asked that MISO examine individual transformers to see if they can handle ambient adjusted ratings. Some board members have observed that many of the system’s transformers are probably antiques.

MISO and its transmission owners have been working since late 2020 to establish more dynamic line ratings.

Initial MTEP22 Portfolio has $3.3B in Costs

MISO’s first version of its 2022 Annual Transmission Plan (MTEP 22) portfolio and will cost $3.3 billion, staff said during the first of a series of subregional planning meetings this week.

The figure is a tick higher than 2021’s package, which slightly exceeded $3 billion and was approved by the Board of Directors in December. (See MISO Wraps Annual Transmission Package.)

The draft MTEP 22 spending breaks down to $611 million worth of baseline reliability projects, $172 million in generator interconnection projects, and $2.5 billion worth of “other” projects, the catch-all classification the RTO uses for projects that address either load growth, aging equipment or other reliability needs.

The grid operator will perform independent analyses through May on the project recommendations to determine whether it finds the same issues that transmission owners identified. Staff will meet with the TOs over any discrepancies.

In August, MISO will release a clearer picture of the recommendations. They will be updated through early December, when the board will take up the transmission planning package for consideration.

The RTO won’t conduct market congestion planning or special economic planning studies this year, leaving those assessments to its ongoing long-range transmission plan. That planning effort might produce its first project approvals for the Midwest in June. (See MISO Promises Long-range Tx Project Reveal Soon.)

“For this year, the economic planning is incorporated into the long-range transmission plan,” said Thompson Adu, transmission expansion planning senior manager.

Transmission planning is more important than it’s ever been in MISO, which has a packed generation interconnection queue comprised almost exclusively of renewable generation and battery storage.

The queue currently has 856 projects totaling 134.3 GW, about 10 GW higher than the system’s current summer peaks. Last fall, developers’ requests to join the system pushed the queue to a 153-GW high, crushing all previous records. (See MISO Warns Queue Won’t Stay at 150-GW High.)

The RTO’s Central region of Illinois, Indiana and northeastern Missouri is responsible for 52 GW of potential generation, much of it solar, spread across more than 300 active projects. Network upgrade costs for just the projects from the 2018 and 2019 cycles, excluding affected system upgrade costs, have been estimated at more than $2 billion.

“Especially in the Central [region], we see the largest number of solar, storage and hybrid projects,” MISO engineer Forrest Tingo said.

MISO South accounts for more than 200 active projects, representing 36.5 GW. The South’s 2020 cycle of generation requests faces $759 million of network upgrades before they can connect to the system.

Clean Grid Alliance’s Natalie McIntire asked whether the region is experiencing costly network upgrades comparable to those of the MISO West planning region, where upgrades come at too steep a cost for most generation developers to proceed. The West’s collection of generation hopefuls in the queue are currently burdened with almost $1.8 billion in estimated network upgrade costs.

Staff said the South’s upgrade costs are trending higher simply because of the number of projects.

Year’s First Expedited Requests Approved

MISO also recently authorized five expedited transmission project reviews in Arkansas, Louisiana, North Dakota and Kentucky.

Staff found no adverse impacts after studying two new substations in northeastern Arkansas and southwestern Louisiana.

Entergy Arkansas has requested to build the Sandy Bayou 500/230-kV substation along the existing Driver-to-Shelby 500-kV transmission line to serve up to 550 MW of new industrial load. The utility hopes to have the $91-million substation in service by June 2024 and said work should begin immediately outside of the MTEP 22 cycle. The substation will be located near the Arkansas-Tennessee border.

Asked whether the Arkansas project is connected to Memphis, Light, Gas and Water’s possible migration from the Tennessee Valley Authority to MISO, staff said no. (See Memphis Moves Closer to Breaking from TVA.)

Memphis recently received bids from more than 20 companies hoping to provide alternative energy sources to the city. Should the city become a MISO member, it would need new transmission links to the system.

The RTO will conduct its next board meeting in Memphis this March. The grid operator has historically held its spring Board Week in New Orleans, but staff said the city’s meeting venues are fully booked.

Southern Renewable Energy Association’s Simon Mahan noted during Tuesday’s South subregional planning meeting that the new substation will be situated near a possible long-range transmission line in MISO South. He asked whether the substation would supplant the need for long-range transmission in the region.

“It’s too early to say how it affects it,” MISO’s Bill Kenney responded.

Cleco’s request for the $15-million Cole substation on an existing 230 kV line in Louisiana drew less stakeholder interest. The utility said the project will address new industrial customers and is estimated to be in service by October 15.

The new substations will not be open to competitive bidding because they’re considered load-growth category projects.

MISO also recommended expediting two requests for transformer upgrades from American Transmission Co. in eastern North Dakota and from Michigan Public Power Agency in western Michigan. Both said load growth required that the projects begin ahead of the MTEP 22 cycle.

Staff will discuss its approvals based on its reliability analyses during the March Planning Advisory Committee meeting.

Kentucky utility Henderson Municipal Power and Light (HMPL) requested the fifth expedited project, a reroute of four 69-kV transmission lines in northwest Kentucky to make way for highway construction. The municipal utility expects the project to cost about $3.8 million.

MISO said HMPL plans to complete the project by the end of June, five months before MTEP 22 receives a vote before the board.

MISO engineer Andenet Leyew said during a Jan. 19 Central Technical Study Task Force meeting that staff didn’t uncover any adverse reliability impacts when analyzing the project. He said the RTO will allow the project to move ahead out of the usual annual cycle, though it will still be considered part of MTEP 22.

Study: Solar Land-use Estimates Overstated for Low-carbon Future

Current estimates of the land needed for utility-scale photovoltaic (USPV) facilities in the decarbonization of the U.S. power sector are “significantly” overstated, according to a new study from the Lawrence Berkeley National Laboratory.

Relying on outdated energy density estimates of a 2013 National Renewable Energy Laboratory (NREL) report to understand both USPV land requirements and land-use impacts is problematic, Berkley Lab research scientist Mark Bolinger said Monday.

The study, “Land Requirements for Utility-Scale PV,” updates USPV power and energy densities based on data for the sector from 2011 to 2019.

“Virtually all modeling studies looking at decarbonization scenarios tell us that we’re going to need to build massive amounts of solar to decarbonize not only the power sector, but also the broader economy,” Bolinger, who is co-author of the study, said during a webinar.

As the amount of land used for USPV development grows at an accelerated pace, Bolinger said it likely will heighten and potentially exacerbate public concerns about land-use impacts.

NREL’s report, “Land-Use Requirements for Solar Power Plants in the United States,” is the most recent major study of USPV power and energy density, even though the solar sector has changed a lot in the last decade.

Per-acre power density estimates in the NREL report for tracking plants are about 35 times higher than those of the new report. NREL’s estimates, however, are “routinely cited,” Bolinger said.

A 2021 Princeton study on land requirements for various decarbonization scenarios said that, based on NREL’s data, expanding solar 10% a year through 2030 could require 16 million acres. Berkeley’s data, however, could put that estimate closer to 460,000 acres.

Several industry changes have affected the difference in the studies’ density estimates, according to Bolinger. Module conversion efficiencies are increasing, and developers are shifting from fixed-tilt racking to single-axis tracking, he said. In addition, tracking algorithms are more sophisticated, which boosts energy capture.

The Berkeley study used a sample of 723 operating plants totaling 35 GW of capacity, representing 90% of the plants built in the U.S. between 2011 and 2019. By the end of the study period, Bolinger said, there were nearly twice as many tracking plants and twice as much tracking capacity as fixed-tilt capacity in the sample.

Most of the change in preference, he added, has happened since 2015, reflecting “the declining cost and increasing reliability of single-axis tracking.”

Overall findings for the report show that per-acre power and energy densities have “increased significantly,” Bolinger said. Power density is up 52% for fixed-tilt plants and 43% for tracking plants, he said, while energy density is up 33% and 25%, respectively, based on the area directly occupied by arrays.

Berkeley expects to update the solar plant dataset through 2021 and for future years “so these benchmarks of solar’s power and energy density never become as stale as they were prior to this update,” Bolinger said.

Researchers also plan to study the effect of advancements in module technology and emergence of hybrid PV-storage plants on energy density, he said.

Michigan Climate Plan Delayed

LANSING, Mich. — The Michigan Council on Climate Solutions is delaying the final draft of the state’s Healthy Climate Plan for another month to get more feedback from the public.

Department of Environment, Great Lakes and Energy Director Liesl Clark sent an email to council members on Feb. 2 saying that feedback will be accepted for another month because of an “overwhelming” number of comments from the public and council members on the proposed plan to reach carbon neutrality by 2050.

The deadline for all comments and suggestions is now March 14. The original deadline was Feb. 13. (See Michigan Zero-carbon Proposal Draft Sent to Whitmer.)

March 14 was originally the date the final report was to go to Gov. Gretchen Whitmer (D). The new date for sending the plan to the governor is April 22, Clark said. In her 2020 executive order and separate executive directive creating the council, Whitmer had called for delivery of the plan to her by the end of 2021.

The department has also added a third public listening session for individuals to comment on the proposed plan — scheduled for 6 p.m., Monday, Feb. 14 — which will focus on environmental justice issues. The next public listening session is set for 6 p.m. on Tuesday.

At the first session on Jan. 26, dozens of people proposed making the plan more aggressive. The plan now calls for the state to stop all use of coal by 2035 and to accommodate 2 million electric vehicles on state roads by 2030.

The council itself will next meet on March 8. In her email, Clark praised councilmembers for their “input throughout this process. We are grateful for your continued guidance and feedback as we finalize the plan.”

FERC Accepts New PJM FTR Forfeiture Rule, Without Refunds

FERC on Jan. 31 accepted PJM’s financial transmission rights forfeiture rule replacement without ordering refunds of bills under the previous regime the RTO implemented without commission approval (ER17-1433). The new rule took effect Feb. 1.

The commission in May found that PJM’s previous 1-cent FTR impact test, which determines whether the net flow impacts the absolute value of an FTR by 1 cent or greater, to be unjust and unreasonable. It ordered a replacement that used a different threshold or an alternative approach. (See FERC Rejects PJM FTR Forfeiture Rule.)

PJM in July proposed replacing the 1-cent threshold test with a test that is evaluated at each individual constraint and to post additional day-ahead data to “enable market participants to better estimate whether their transactions may trigger forfeiture.”

FTRs are financial instruments that allow load-serving entities to hedge the risk of transmission congestion costs and permit financial traders to arbitrage day-ahead and real-time congestion. PJM originally implemented the forfeiture rule in 2000 to prevent market participants from using virtual transactions to create congestion that benefits their FTR positions.

Under PJM’s revised rule, the revenues on an individual constraint may be forfeited when:

  • the absolute value of the attributable net flow across a day-ahead binding constraint relative to the day-ahead load weighted reference bus between the FTR delivery and receipt buses exceeds 10% of the physical limit of such binding constraint;
  • the net flow is in the direction that increases the value of the FTR between the delivery and receipt buses; and
  • the net flow results in a higher congestion LMP spread in the day-ahead energy market than in the real-time energy market.

“We find that PJM’s revised FTR forfeiture rule reflects a reasonable balance,” the commission said Jan. 31. “It will sufficiently deter manipulative behavior without significantly burdening legitimate hedging activity.”

“While the revised FTR impact test has, in a sense, replaced a greater than 1-cent threshold with a marginally more restrictive greater-than-zero threshold, we expect that evaluating forfeiture at each individual constraint will substantially reduce the amount of money forfeited because it targets only the constraints at which violations occur,” it said.

No Refunds

FERC first ordered PJM to change how it implemented the forfeiture rule in January 2017. The RTO responded with two compliance filings and began billing forfeitures based on the new approach in September 2017, even though the commission had not approved the filings.

In its order rejecting the filings last year, FERC said PJM must include information to help the commission to determine whether it should issue refunds and surcharges.

PJM requested that FERC decline to order retroactive refunds, saying it was “not presently capable of providing details regarding the specific parties who would receive refunds or be charged surcharges.” The RTO said that “absent considerable software development and testing work that would take months to complete,” it was unable to identify market participants that would have violated the pre-2017 rule and the extent of resulting charges or credits from an update.

The commission found that PJM had demonstrated that it does not the capability to calculate refunds, and therefore they were “not appropriate.”

“In order to attempt to resettle nearly 4.5 years’ worth of FTR forfeitures, PJM would need to resurrect the old code, significantly rewrite this software to account for structural database changes resulting from subsequent market design modifications and then conduct testing work that would take months to complete,” FERC said. “These efforts would come at considerable expense, which would presumably be passed on to transmission ratepayers.”

While he concurred with the results of the order FERC Commissioner James Danly admonished PJM for implementing the rule before it was approved by the commission.

“I also must regretfully agree with the decision not to order refunds because it appears impossible to put this genie back into its bottle,” Danly said. “PJM shoulders the blame for this mess for implementing a compliance rate that had not yet been approved.”

Avista, Tacoma Power Stick with March Entry into WEIM

Washington utilities Avista (NYSE:AVA) and Tacoma Power will not delay their entry into the Western Energy Imbalance Market (WEIM) next month, despite the Bonneville Power Administration’s decision to postpone joining by two months.

All three entities were scheduled to begin trading in the WEIM on March 2, but BPA last week said it would put off joining until May 3 to address technical and training issues among its large base of generation and transmission customers, most of which are publicly owned utilities. (See BPA Postpones Western EIM Entry by 2 Months.)

Given the complex and time-consuming logistics of integrating members into the WEIM, market operator CAISO in 2018 implemented a policy of only one go-live date each year for new members, typically in early April. The ISO had already accommodated BPA by pushing this year’s entry date to March, just ahead of the peak season for snowmelt and hydroelectric generation in the Pacific Northwest.

In letting the go-live date slip to May, CAISO is making another exception for the federal power marketing agency, which operates about three-quarters (15,000 miles) of the Northwest’s transmission system and will greatly expand the reach of the WEIM.

“In this case, the ISO has accommodated our delay to a May timeline, just looking at all the work that’s been completed and how close we are,” BPA EIM Program Manager Roger Bentz said Jan. 27 during an agency workshop.

But BPA’s postponement will have no impact on the timelines for Avista and Tacoma Power, which both confirmed Monday that they plan to join the WEIM on the original schedule.

“We are not delaying our entry,” Avista spokesperson Annie Gannon told RTO Insider. “We are staying with our date of March 2 since we are on schedule with all of our testing.”

Tacoma Power will also stay the course despite its “strong dependency with BPA,” spokesperson Rebekah Anderson said.

“After assessing the impacts that BPA’s postponement could have on our transition plans, our EIM team determined that the risks and impacts of going live without BPA are low enough to keep the March date,” Anderson said in an email.

As a municipal utility, Tacoma Power has status as a BPA “preference customer,” giving it priority access to the agency’s relatively low-cost hydroelectric output and the transmission network used to deliver it. The utility also operates four of its own hydroelectric projects, which are together rated at more than 800 MW of nameplate capacity. Unlike most of BPA’s preference customers, the utility operates its own balancing authority area as well.

Avista’s BAA covers parts of Eastern Washington and the Idaho Panhandle. The Spokane-based utility controls nearly 3,600 miles of transmission and 1,858 MW of generation, including 1,025 MW of hydro.

Experts Expect Stable or Decreased Prices in ISO-NE Capacity Auction

Next week’s Forward Capacity Auction in ISO-NE will likely have similar outcomes to last year’s, observers say, even as debate swirls in the region around the future of the market.

The clearing price in FCA 16 will probably be about equal to or lower than last year’s, said experts and analysts who spoke to RTO Insider.

There are two primary changes acting on the market that are likely to largely offset each other: a significant decrease in the installed capacity requirement (ICR) and falling supply.

This year’s ICR is 32,568 MW, down about 1,600 MW from last year’s value of 34,153 MW. That’s because of a decrease in ISO-NE’s peak load forecast, said Joe Prosack, an analyst at ESAI Power.

The decrease stems from changes to the RTO’s methodologies, particularly in the incorporation of energy efficiency capacity. Historically, that calculation has been based on energy efficiency resource performance.

But “the performance of EE resources often exceeded the actual capacity supply obligations that they had,” Prosack said. “So in essence, they were adding back way more demand than energy efficiency resources were adding in terms of supply.”

The new methodology change brings those two into alignment. “And as a result, they’re essentially adding back less energy efficiency capacity compared to previous years, and that resulted in a large decline in the peak load forecast,” Prosack said.

ESAI thinks there will be a large surplus of capacity, even with the known supply decrease, which will push prices below last year’s clearing prices of $3.98 kW-month in the Southeast New England zone, $2.61 kW-month in the Rest-of-Pool zone, and $2.48 kW-month in the Northern New England and Maine zones.

That’s not a universal opinion, however.

Dan Dolan, president of the New England Power Generators Association, said he believes the supply decreases — particularly the loss of the Killingly Energy Center in Connecticut that had its capacity supply obligation terminated by ISO-NE last year — will largely offset the lower ICR. Dolan spoke before the D.C. Circuit Court of Appeals on Friday stayed FERC’s order ending Killingly’s capacity supply obligation, allowing the proposed plant to take part in the auction. (See Killingly Stays Alive After DC Circuit Halts FERC’s Termination Order.)

“In a market as small as New England, any large power plant coming in or out has a big impact on the auction results,” he said. But overall, “my guess is we have a relatively stable auction,” Dolan said.

Another Year of the MOPR

Renewable and battery storage developers face continuing uncertainty about the auction as the region’s minimum offer price rule, intended to mitigate the price-dampening effects of state-sponsored resources, remains in effect.

Some of those companies have also argued that the capacity market disadvantages renewable projects more broadly.

“There is a perception that the bids with state subsidies are the only ones that get inflated, but [the Internal Market Monitor] actually has done this for unsubsidized projects as well,” said Theodore Paradise, executive vice president of the transmission and storage company Anbaric. “The result has kept not only renewables with state contracts out of the market … but it’s hampered the clean energy transition.”

Anbaric and the Massachusetts Municipal Wholesale Electric Co. had a bid for a 100-MW battery storage project increased by the Monitor for this upcoming auction, a decision that FERC upheld, although its Democratic commissioners said that the companies made a “persuasive case” in their protest.

Some state-sponsored resources should be able to clear the auction because of “generally low enough” offer review trigger prices, the offer floors for new resources, ESAI’s Scott Niemann said.

The exception is offshore wind projects, which have to use the auction’s starting price. That makes it “very difficult [to clear] unless they get a unit-specific exemption,” Niemann said.

Smooth December Operations for MISO

December saw unexceptional load and higher energy prices, MISO said in a monthly operations report.

The grid operator reported an average load of 73 GW and a peak of almost 89 GW on Dec. 26. Load registered lower than last December’s 75-GW average and 91-GW peak.

MISO said higher fuel prices drove real-time LMPs to an average $36.50/MWh, up sharply from the previous December’s average of $24/MWh. Day-ahead prices averaged a little more than $37/MWh.

Coal and natural gas-fired generation sat atop the month’s fuel mix, each serving about 30% of load. Wind and nuclear generation contributed about 18% apiece.

The grid operator had an average 40 GW of generation unavailable daily because of planned and unplanned outages and derates. Most of the 14 GW in daily unplanned outages came from coal and gas units.

MISO’s Central region — Michigan, Wisconsin, most of Indiana and Illinois, and eastern Missouri — averaged 37 GW of load. MISO’s North region — Minnesota, Iowa, North Dakota, northern South Dakota and a sliver of eastern Montana — averaged an 18-GW load. MISO South also averaged 18 GW of load.

The Central region remains the heaviest user of coal generation as it supplied about 50% of the region’s real-time fuel mix in December. The North region was able to draw on a 48% share of wind generation, while the South used a 60% natural gas and 30% nuclear fuel mix.

Unsurprisingly, the month contained an all-time wind generation record, with wind supplying nearly 22 GW of the footprint’s demand on Dec. 12. However, that record was outdone a month later when wind served almost 24 GW on Jan. 18.

MISO collected $139 million in day-ahead market congestion costs during December.

December and January, which MISO considers its riskiest months, are now behind the grid operator without a maximum generation emergency. Cold weather in January forced the RTO to declare a maximum generation warning and send two conservative operations instructions on separate occasions for different parts of the footprint. (See “2 Conservative Ops Declarations in January,” MISO Market Subcommittee Briefs: Jan. 27, 2022.)

MISO told stakeholders before the winter that January would contain the highest risk of an emergency. It also delivered warnings about patchy deliveries of natural gas and coal supplies and generation outages should a cold snap descend on the footprint. (See MISO Sounds Alarm on Potential Winter Fuel Scarcity.)

The grid operator entered this winter with 8 GW of additional generation over last winter, mostly from renewable resources. 

New Jersey’s New Emission Rules Draw Fire

Rules drafted by New Jersey’s Department of Environmental Protection (DEP) to cut emissions from electricity generation and building heating systems faced tough criticism Tuesday from the environmental and business communities who said the rules would raise costs and do little to meet the state’s climate change goals.

The rules seek to reduce CO2 from fossil-fired electric generating units (EGU) through reduced emissions limits and would prohibit the installation of new commercial and industrial fossil fuel-fired boilers in certain circumstances. The rules also would ban the use of two fuel oils that have high CO2 emissions.

Few of the more than 50 speakers that addressed the four-hour online hearing to solicit public input on the rules offered support for them. Environmentalists, who accounted for the largest proportion of the speakers, called the rules flawed and urged the DEP to undertake a dramatic rewrite or start again. They said numerous loopholes and exceptions would allow many existing fossil-fuel generation plants to continue operating and new fossil plants to be built.

“We didn’t expect this rule to be a silver bullet,” said David Pringle, a steering committee member of Empower New Jersey, a coalition of about 120 environmental, community, faith and grassroots groups. “But it’s a dud. … There’s lots of examples of where this rule doesn’t go far enough.”

Electric Generation

Under the rules, existing power plants would be able to emit no more than 1,700 lb. CO2/MWh gross energy output beginning Jan. 1, 2024. The permitted emissions would decline to 1,000 lb. CO2/MWh gross energy output by Jan. 1, 2035. New fossil-fueled plants would need to meet the “most stringent CO2 emissions limits currently available.” New EGUs with a capacity equal or greater to 25 MWe could generate no more than 860 lb. CO2/MWh gross energy output. New EGUs with a smaller capacity than 25 MWe would have no emissions limit unless there are other new EGUs built at the same facility and their combined capacity was more than 25 MWe.

The rules would also ban high-emitting fuel oil Number 4, often used for low- and medium-speed diesel engines, and Number 6 fuel oil, used mainly for electric power production, space heating, ships and industrial purposes.

Jeff Tittel, the former head of the New Jersey Sierra Club, said he believes the rules will enable 90% of the existing fossil-fuel plants in New Jersey to continue operating and won’t prevent the construction of new plants because they set the emissions limitations so high.

“We’re concerned that this rule is going to allow for more power plants, more fossil fuel infrastructure and keep almost all the [existing] dirty plants,” he said. He and several other environmentalists said the rules are so ineffective that the DEP should abandon them and start again.

Mixed Reaction on Boiler Rules

The rules also seek to limit emissions from buildings, which according to the DEP, account for 62% of the state’s end use energy consumption.  If the rules go into effect, the DEP will not issue a permit for a new fossil-fuel fired boiler of between one and five MMBTU unless it is “technically infeasible” to use non-fossil fuel boiler because of “physical, chemical or engineering principles” or because the interruption of the operation of an existing boiler could “jeopardize public health, life or safety.” The rule would take effect Jan. 1, 2025.

DEP says there are about 8,421 fossil-fuel fired heating boilers in the state, and about 268 are replaced on average each year. While the rules do not require the use of electric boilers, they note that they are the most “commonly available” alternatives to fossil-fuel boilers.

“This proposal will do little to reduce greenhouse gas emissions or protect citizens but could be costly and highly destructive of our energy systems and our economy,” said Ray Cantor, a lobbyist for the New Jersey Business and Industry Association.

Yet there were pockets of support for the rules. Eric Miller, New Jersey energy policy director for the National Resource Defense Council, said the efforts to cut emissions from boilers — the state’s second largest source of emissions from end-use sectors — are sorely needed.

“Rapid decarbonization of the building sector is a key goal,” he said. “This rulemaking will be the first major electrification effort by the state of New Jersey. The importance of this portion of the rulemaking can’t be overstated.”

Cutting Emissions by 50%

The hearing was part of a 90-day public comment period that will end Mar. 6, after which DEP will consider the comments and may revise the rules, a process that will likely take most of this year.

Gov. Phil Murphy, who began his second four-year term in January, wants the state to reach a goal of 100% clean energy by 2050. To that end, Murphy in 2020 released a masterplan update that seeks to cut New Jersey’s GHG emissions 80% by 2050 (80×50), and on Nov. 10, 2021, signed an executive order that committed the state to reaching a 50% cut in emissions by 2030.

To reach the goals, Murphy has pledged to procure 7,500 MW of offshore wind capacity and to offer incentives and create charging infrastructure to put more EV cars and trucks on the road. He also has sought to reshape the state solar incentive programs to reduce taxpayer costs and stimulate growth.

Although it acknowledged the electricity generation sector is the state’s third-largest source of CO2 emissions, DEP said fossil fuel plants would be needed for years to come because no OSW will be generated until 2025, and much of the planned wind energy capacity would not come online until much later.

Environmentalists questioned how Murphy could pledge to be committed to cutting emissions while allowing the DEP to release a rule proposal that would fall far short of his goals.

Empower New Jersey said that by comparing the calculations for emissions reductions outlined in the DEP rules with the reductions set out in Murphy’s goals, it concluded that the rules would provide only about 3% of the reductions needed to reach the 80X50 goal, and only about 4% of those needed for a 50% cut in emissions by 2030.

“This rule needs a clear overhaul to get anywhere near that goal,” said Doug O’Malley, director of Environment New Jersey.

Businesses were more concerned about the new rules on boilers. Andrew J. McNally, director of government affairs for South Jersey Industries, which owns two gas delivery companies, urged DEP to abandon the rules governing boilers. He said the company has about 600 customers that use gas boilers, which would eventually have to be replaced with an electric system that would cost about twice as much and be far more expensive to run.

He said the shift to electricity would also “actually increase emissions” because the state still relies on some fossil-fuel plants to generate electricity.

Nicholas Kikis, vice president of legislative and regulatory affairs for the New Jersey Apartment Association, which represents the owners, managers and developers of apartment buildings, said the proposed rule governing boilers “essentially discards a system that works well.”

“Overall, the apartment industry has made tremendous strides towards improving energy efficiency and reducing the environmental impact of buildings and building gas systems,” he said, citing EE measures and upgraded building systems. The proposed rules, he added, would reject that in favor of a “one size fits all strategy” based on electricity.