Vineyard Completes Construction, Revolution Starts Generation

One New England offshore wind farm has completed construction, and another has begun sending electricity ashore as it finishes construction.

With a combined nameplate capacity of 1,510 MW, Vineyard Wind and Revolution Wind are expected to provide an important boost to the ISO-NE grid.

But both projects have faced delays and interference reaching their respective milestones, including two federal stop-work orders each — one from equipment problems, and three as part of the Trump administration’s ongoing campaign against offshore wind development. Whether the administration might take steps against completed wind farms remains to be seen.

Vineyard announced installation of the final turbine blades the evening of March 13, marking the completion of offshore construction.

Also on March 13, Revolution announced it had begun delivering electricity. Coincidentally, that date was the deadline for the Trump administration to appeal a federal judge’s Jan. 12 stay of a Bureau of Ocean Energy Management stop-work order against Revolution. BOEM did not appeal.

Vineyard put its first steel in the water in June 2023 and exported its first electricity to Massachusetts in January 2024. But the 806-MW project took a sharp turn for the worse later that year when a blade disintegrated, showering debris into the oceans and then onto beaches. An investigation revealed manufacturing flaws; work was slowed or halted while replacement blades were installed.

The 65-turbine, 704-MW Revolution Wind began construction in 2023 but ran into cascading delays even before President Donald Trump returned to office. Then late in 2025, as the project was nearing completion, BOEM shut it down along with the four other projects under active construction in U.S. waters.

One by one, judges lifted all of those stop-work orders. (See With Sunrise Wind Ruling, OSW Industry now 5-0 Against Trump Admin.)

Now that electrons have begun flowing to Connecticut and Rhode Island, Revolution will be scaling up generation in the days and weeks to come, an Ørsted spokesperson said March 16.

An ISO-NE spokesperson said March 16 that Revolution is one more asset for a region that needs new power resources: “Last week, Revolution Wind delivered power to New England’s regional grid, as part of the commissioning and testing process. Through the wholesale markets administered by the ISO, Revolution Wind has committed to helping meet New England’s demand for electricity, which is forecasted to grow approximately 11% over the next decade.”

Vineyard and Revolution would not say how much electricity they are sending ashore, and ISO-NE said it could not, citing confidentiality rules. An industry advocate previously said Vineyard sent as much as 600 MW to the strained New England grid during a major winter storm in January.

As of 5 p.m. March 16, the RTO’s ISO Express dashboard indicated wind turbines were producing a total of 1,066 MW, or 66% of the renewable resource mix. System load was 14,473 MW.

Natural gas (6,735 MW) and nuclear (3,358 MW) accounted for the bulk of resources. Net imports (1,623 MW) were a bit ahead of wind power, and hydro (982 MW) was a bit behind.

In 2025, wind provided 4,618 GWh of electricity to the ISO-NE grid, which was 4.1% of generation and 3.9% of net energy for load. Solar was slightly higher: 4,836 GWh, 4.3% and 4.1%, respectively.

U.S. Sen. Sheldon Whitehouse (D-R.I.) was among those cheering the news about Revolution powering up.

“When Rhode Island families pay their utility bills, they will be grateful to Ørsted and the resilient union workers who got this project over the finish line,” said Whitehouse, who brought a union apprentice electrician helping build Revolution to Trump’s 2026 State of the Union Address. “Power from Revolution Wind will make our grid more reliable in the winter and reduce Rhode Islanders’ energy costs for years to come.”

APS to Seek Palo Verde Extension through 2067

Arizona Public Service has notified the U.S. Nuclear Regulatory Commission that it plans to seek operating license renewals for all three units at Palo Verde Generating Station, potentially extending operations through the mid-2060s.

APS filed a notice of intent with the NRC on March 13, saying it will submit a Subsequent License Renewal application in late 2027. The renewal would allow Palo Verde units 1, 2 and 3 to run through 2065, 2066 and 2067 respectively.

NRC approval would extend the units’ life to a total of 80 years. APS noted that the NRC so far has renewed licenses for 80 years of operation to 10 nuclear plants across the U.S.

The three Palo Verde units, with a combined capacity of 4.2 GW, are a key piece of APS’s long-term energy strategy and central to Arizona’s grid reliability, the company said in a release.

To submit a commentary on this topic, email forum@rtoinsider.com.

“Our notice to the NRC is another step in ensuring Arizonans and the region continue to benefit from this critical resource for many more years to come.” APS CEO Ted Geisler said in a statement.

Units 1, 2 and 3 received their initial 40-year operating licenses from the NRC in 1985, 1986 and 1987, respectively. In 2011, the NRC approved APS’ request to extend the operating licenses for 20 years, through the mid-2040s.

Palo Verde is operated by APS and supplies electricity to Arizona, Texas, New Mexico and Southern California. It is owned by seven utilities: APS, El Paso Electric, Los Angeles Department of Water and Power, Public Service Company of New Mexico, Salt River Project, Southern California Edison and Southern California Public Power Authority.

Through its “subsequent license renewal” (SLR) process, the NRC conducts safety and environmental reviews for extending nuclear power plant operations for up to 80 years of operation. Public meetings are part of the process.

In addition to approved applications, the NRC is reviewing three SLR applications. Those include units 1 and 2 of Florida Power & Light’s St. Lucie plant; Unit 2 of Duke Energy’s H.B. Robinson power plant in South Carolina; and units 1 and 2 of the Edwin I. Hatch nuclear plant in Georgia. NRC also has a pipeline of notices of intent to file SLR applications.

Among the 10 nuclear plants that have been approved for 80 years of operation are Florida Power & Light’s Turkey Point units 3 and 4. The approval, received in 2024, allows the units to run through 2052 and 2053.

Units 2 and 3 of Peach Bottom Atomic Power Station, co-owned and operated by Constellation Energy Generation in York County, Pennsylvania, received approval to operate through 2033 and 2034.

Arizona’s Nuclear Future

Besides seeking license extensions for Palo Verde, APS has teamed up with two other Arizona utilities — Salt River Project and Tucson Electric Power — to explore additional nuclear generation in the state. In 2025, they applied for a U.S. Department of Energy grant to evaluate potential nuclear sites. (See Arizona Electric Utilities Team Up to Pursue Nuclear.)

The funding is available through the Generation III+ Small Modular Reactor program in the DOE’s Office of Clean Energy Demonstrations. The utilities are applying for funding in the “fast follower” category, which will provide up to $100 million to address hurdles the U.S. nuclear industry has faced in areas such as design, licensing, supply chain and site preparation. Awardees must match the DOE funding.

Tier 1 award recipients were announced in November 2025. (See DOE Awards Holtec, TVA $800M to Build Pioneering SMRs.)

Tier 2 applicants, including APS, are still waiting to hear if they’ll receive funding. But initial project planning has begun, including the hiring of a project manager, APS Senior Director Brad Berles told the Arizona Corporation Commission during a February workshop on nuclear power.

APS continues to evaluate nuclear technologies and hasn’t yet settled on a specific option.

“We know there’s a large demand growth that we need to meet,” Berles said.

EV Capacity More Than Battery Storage in California, CEC Finds

California’s historic battery storage boom over the past five years has not kept up with the state’s electric vehicle capacity growth — and now officials want to send idle EV electrons back to buildings, homes and the grid through new bidirectional chargers.

At the end of 2025, EV capacity in California reached 18.5 GW, which is more than a third of the historical peak load recorded in CAISO, Vincent Weyl, CEC principal of fuels and transportation, said at a March 12 CEC voting meeting. That figure also exceeds the state’s total stationary storage capacity of about 17 GW, including behind-the-meter storage and utility-scale storage, Weyl said.

“The opportunity and potential of bidirectional [charging] is massive and presents benefits to EV owners, grid operators and ratepayers,” Weyl said. “Of course, this resource can only be accessed when the vehicle is not driving and when the vehicle is located where bidirectional charging is possible.”

EVs could serve about 10% of California’s total residential load, he added.

To submit a commentary on this topic, email forum@rtoinsider.com.

The CEC has funded 200 bidirectional charging stations to date and is developing a program that could fund up to 18,000 new bidirectional chargers, Weyl said.

The CEC’s bidirectional charging research project is the first time a state agency has assessed the benefits of bidirectional charging for the grid, the driver and electricity consumers, CEC Commissioner Nancy Skinner said at the meeting. But much more work needs to happen for these chargers to proliferate, she said.

Many changes to rate structures and how equipment connects to the grid are needed to “compensate someone for using their EV to send power to the grid,” Skinner said.

More than half the EVs studied could participate at least weekly in a discharge event during peak hours, CEC staff found in their research. This charging frequency would reduce EV owners’ electricity bills an average of $260 to $320 from June to September.

“It is incredible how much power we have roaming around on our streets,” Commissioner Andrew McAllister said at the meeting. “If we can take advantage of even a small percentage of that at the margin, that is going to make a huge difference in our reliability profile.”

But the concept of connecting EVs to the grid has been around for more than 10 years at California’s energy agencies. In 2014, CAISO published a vehicle-to-grid road map report with support from the CEC and the California Public Utilities Commission. More recently, in February 2026, the CPUC in a resolution asked Pacific Gas and Electric to demonstrate how bidirectional EVs and electric vehicle supply equipment can provide community resiliency benefits during grid outages.

At the voting meeting, the CEC also approved Riverside Public Utilities’ (RPU) integrated resource plan. The city of Riverside plans to procure its electricity from only zero-carbon sources by 2040 and retire its gas-fired plants by the same year. Currently, about 30% of RPU’s electricity is generated by geothermal resources.

RPU’s annual demand is expected to increase from about 2,300 GWh in 2025 to more than 3,250 GWh in 2045.

EPI Report Finds Utility Profits Account for 13% of Bills and Rising

Watchdog organization Energy and Policy Institute compiled a report that claims investor-owned utility profit margins are on the rise, with 13-15% of customers’ bills bankrolling profits.

EPI’s report, “Paying for Their Profits: How Ratepayers Foot the Bill for Soaring Utility Profits,” said that from 2021 to 2024, utilities kept on average of 13 cents in profit of every dollar customers paid, totaling $195 billion in profits. EPI said electricity bills “far outpaced” inflation and the median wage, affecting customers’ ability to pay.

“This is just the latest example of EPI making up alternative definitions that serve the interest of their dark-money benefactors,” said Dani Marx, a spokesperson for the Edison Energy Institute, an association that represents investor-owned electric utilities.

Another critic of the report called it “a naked attempt to inflame the public against energy bills that have risen due to the restrictive policies” EPI has “championed for years.”

Daniel Tait, EPI’s research and communications director, said researchers analyzed publicly available data from about 110 investor-owned utilities across the country from 2021 to 2024. Utilities included electricity-only utilities and those that bill customers jointly for electric and gas service.

Tait said EPI used a “straightforward calculation” of net income divided by total operating revenue.

As part of the report, EPI included a net-profit utility report and calculator tool, where ratepayers can look up their utility and type in their bill amounts to figure out what portion of their bills go directly to profits.

“Transparency here is going to be just the first step,” Tait said.

Tait said EPI plans to update its calculator tool as utilities report their 2025 financial results. During a March 12 webinar to discuss the report, Tait said data collected so far on 2025 financials show that profit margins are getting larger, closer to 15 cents on the dollar.

Tait said EPI found that for an electric bill, an average of $30 goes directly to corporate investors.

“That is money not to keep the lights on, not to build the grid, but just for that profit,” Tait said. “And that share is rising as bills have gone up.”

EPI said the pattern of rising rates and rising profits “raise important questions about the balance between utility profitability and affordability, especially as customers nationwide face continuously high energy costs and immense financial strain.”

Tait said that while politicians and utilities often point to things like fuel costs, infrastructure investments and extreme weather events when explaining rate hikes, they often leave out how much of a customer’s bill goes to shareholders.

To submit a commentary on this topic, email forum@rtoinsider.com.

EPI said that between 2021 and 2024, almost 40 utilities averaged profit margins above 15%, with other utilities trending even higher. Utilities they found with the highest average profit percentages over the four-year period include: MidAmerican Energy (27.22%), Florida Power and Light (23.51%), Nantucket Electric (23.24%), Empire District Electric (22.45%), Florida Public Utilities (20.35%), CalPeco (20.28%), Public Service Electric & Gas (19.44%), Duke Energy Carolinas (19.07%), Alabama Power (18.71%) and AEP Texas (18.63%).

EPI also said that of the 79 utilities that released 2025 financial information at the time it was finalizing its report, the highest profit margins were at Florida Power and Light (27.44%), MidAmerican Energy (27.16%), SoCal Edison (26.11%), Georgia Power (22.57%) and AEP Texas (22.19%).

Marissa Gillett — former Chair of Connecticut’s Public Utilities Regulatory Authority and now a senior fellow at the American Economic Liberties Project — said even before today’s affordability crisis, customers expressed “feelings on a spectrum ranging from confusion to outrage regarding the size of utility profits.”

During the webinar, Gillett said there are “four policy levers that can be utilized immediately to address the moment we’re in,” including dialing down artificially high return on equity rates, re-examining capital structures, modifying the ratemaking process to right-size utility profits and adding more consumer advocate voices to the ratemaking process.

She said anyone who hasn’t historically participated in rate proceedings needs to become involved. She also said state commissions should be filled with qualified candidates.

Gillett said the country’s investor-owned utilities are making for a “particularly extractive moment” because of “mismatched” incentives utilities receive for capital buildout. She said the return on equity drives utilities to build more, as evidenced by EEI announcing that utilities intend to spend $1.1 trillion over the next four years.

“Profits … are going to get higher if all of that capital investment enters into the utilities’ rates,” Gillett said.

Marx of EEI offered a different point of view. “There are standard calculations for evaluating regulated utility profits that appropriately recognize that most of a customer’s bill reflects pass-through costs of service, but EPI instead took a simple but analytically weak and insufficient approach to intentionally mislead readers into believing that a high percentage of customer bills goes toward profits.”

Brionté McCorkle, executive director at Georgia Conservation Voters, said consumers increasingly are spending higher shares of their income on utility bills. “That burden just continues to get worse as power bill continue to rise,” she said.

McCorkle said her most recent Georgia Power bill was about $233, with roughly $52 of that for utility profit. “That is really high,” she said. “It’s not that they’re raising these bills because it’s necessary to keep the power on. They’re raising these bills and they’re padding their profits.”

McCorkle said utilities are “incentivized to build even if the demand for energy never fully manifests.” She said even if big capital expansions aren’t prudent, utilities can take the investment risks while their rate base foots the bill.

“We’re not just paying for what we build; we’re also paying for the company to profit. … It’s just not designed well,” McCorkle said of the current setup.

McCorkle said the report helps “cut through the claims” that the increases are necessary to keep service reliable. She said utilities can still be profitable, “just not egregiously so.”

Marc Brown, Consumer Energy Alliance vice president of state affairs, derided the EPI report.

“This report is connected to neither sound accounting nor reality,” he said in an emailed statement. “The report’s own disclaimer says that any output is an estimate that could fluctuate wildly, which is to say that fantasy football and uninformed guesses are more accurate.”

He continued: “EPI is the three-card monte of so-called policy organizations. They want you to look elsewhere while remaining silent on state policies, which are responsible for as much as 40% of customer bills in some states. They ignore policies like net metering, which transfers wealth from the poor to the rich, and never offer solutions to failing market designs, which have resulted in future generating capacity shortfalls in PJM, MISO and NYISO.”

“Additionally,” he wrote in reference to Gillett, “one must question the credibility of an organization that casts doubt on others’ motives while remaining shrouded in darkness as to who they represent. Especially when one considers that this line of attack comports with the thinking and behavior of their favorite disgraced state commissioner.”

Ultimately, state regulators are charged with evaluating projects to ensure they’re necessary and benefit customers. Those regulators determine what level of earnings is appropriate for utilities.

Texas PUC Proposes Large Load Interconnection Standards

The Texas Public Utility Commission filed a proposed rule change that would establish interconnection standards for large load customers and support business development while maintaining system reliability.

The rule would require large load customers to execute an intermediate agreement that makes certain disclosures before their inclusion in an interconnection study and to post $50,000/MW in financial security. No later than 30 days after the study, the customers would have to execute an interconnection agreement that updates their disclosures and pay a nonrefundable $50,000/MW interconnection fee (58481).

Staff originally recommended $100,000/MW fees, but the commissioners agreed during their March 12 open meeting to cut them in half. PUC Chair Thomas Gleeson said while he supported staff’s attempt to end the planning restudy cycle caused by speculative large load projects with the fees, they could “deter otherwise viable development.”

“The $100,000/MW threshold may unintentionally create a barrier to market entry for all but the largest hyperscalers in the world, even if these smaller companies have viable, tangible projects under development,” he said in a memo filed before the meeting.

The rule would set consequences should a large load customer withdraw all or a portion of requested peak demand or contracted peak demand and for failing to reach schedule milestones in their phased energization. It would also establish a refund of financial security when a large load energizes.

Market participants and other stakeholders can file comments until April 17.

The commissioners and staff also discussed a proposed rule for net metering arrangements involving a large load co-located with an existing generation resource. The proposal would establish study criteria, set procedural steps for ERCOT and the PUC to follow, and identify a non-exhaustive list of conditions the commission can impose (58479).

The proposal will be brought up for consideration at the PUC’s next open meeting March 26.

ERCOT Files Batch 0 Revisions

ERCOT staff told the PUC they are responding to stakeholder comments on their proposed changes to the large load interconnection process top incorporating the batch, or cluster, studies (59142).

Jeff Billo, ERCOT vice president of interconnection and grid analysis, told the PUC that staff will file comments to a protocol change (NPRR1325) and a Planning Guide revision (PGRR145) that would set up the transitional Batch 0 process. The PGRR would establish the criteria to determine which large load interconnection requests already in progress will be included in the first batch study, while the NPRR lays out how the study would be performed and the transmission plan compiled.

Staff held a fourth workshop on the batch process March 10, and a fifth is scheduled for March 24. ERCOT has also launched a follow-up stakeholder survey to gather additional input.

“We are continuing to engage with stakeholders,” Billo said.

He said staff hope to file additional revision requests early in April that target the roles of bring your own generation and controllable load resources in the batch studies. That would allow them to be brought before the ERCOT Board of Directors in June along with the Batch 0 revisions.

Caldwell Load Joins Texas Grid

ERCOT successfully transitioned the city of Caldwell’s municipal utility from MISO to its system on March 12. The PUC approved the move in 2025 (57517).

The city will continue to serve its residential, business and industrial customers. The Lower Colorado River Authority is responsible for the transmission system that connects Caldwell to the ERCOT grid.

Caldwell, located about 80 miles northeast of Austin, adds about 14 MW of load to the system.

“This transition reflects strong collaboration between the city of Caldwell, the [PUC] and ERCOT to ensure a smooth integration into the ERCOT system,” CEO Pablo Vegas said in a statement.

Oncor Project Approved

The PUC approved Oncor’s $118.8 million Rockhound Switch-Connell Switch project — a 345-kV double-circuit transmission line less than 20 miles long — and related substation work outside Midland’s city limits (58519).

Oncor expects to complete construction and energize the facilities by August 2027. The project was approved by ERCOT’s board in December.

In other actions, the commission:

    • clarified its final order in El Paso Electric’s rate case, finding that distributed generation customers whose interconnection applications were accepted after a 2017 order will be subject to the new rate approved by the PUC (57568). (See “PUC Rejects EPE Cost Recovery for Newman,” ERCOT Promises More Details on Batch Study Process.)
    • assessed $578,916 in penalties, payable to the PUC, for violations of failing to submit required emergency operations plans and other violations in 11 separate dockets (58883, 58954, 58995, 59005, 59017, 59030, 59060, 59065, 59110, 59127 and 59301).

NYISO Stakeholders Discuss Cluster Study, System and Resource Outlook

RENSSELAER, N.Y. — Following the intense discussions of the reliability planning process reforms earlier in March, NYISO’s Electrical System Planning Working Group/Transmission Planning Advisory Subcommittee discussed modest updates to several ongoing projects at its March 9 meeting.

Incremental tariff revisions to the cluster study enhancements project are intended to improve the interconnection process by reducing the administrative burden on applicants, said Thinh Nguyen, senior manager of interconnection projects. The overall goal is to decrease disputes and withdrawals from the interconnection queue.

NYISO later presented the most recent update to the 2025-2044 System and Resource Outlook study. The final report is due the second quarter of 2026 and forecasts system conditions over 20 years. Preliminary results, posted in January 2026, found increased load growth and generation in New York with less reliance on imports. NYISO also asked stakeholders for feedback on potential sensitivity cases.

Stakeholders asked for more clarification on how NYISO arrived at its assumptions for nuclear capacity in the study and questioned if the scenario, which predicts several gigawatts of new nuclear in the capital region, was accurate. Stakeholders said most of the interest in nuclear has been concentrated in the northern part of the state near Oswego. They were also uncertain if the ISO’s assumptions for downstate hydrogen production were realistic.

Sarah Carkner, NYISO manager for long term assessments, said the notion new nuclear capacity could come online by 2038 was based on publicly available data for lead times and that 12 years seemed to be the soonest.

Lastly, NYISO presented a modification to its FERC Order 1920 compliance. Instead of the previously proposed timeline that would have created four to five year gaps in the rollout of System and Resource Outlook Studies, NYISO will perform the study every three years and have it align with New York’s coordinated grid planning process.

ISO-NE Details Initial Forecast of Capacity Auction Reforms’ Effects

ISO-NE has published initial data on how its proposed capacity market overhaul will affect resource accreditation, providing an indication of how the changes would affect capacity market revenues for different resource types.

The RTO presented the long-awaited impact analysis results to the NEPOOL Markets Committee on March 12. Reacting to the findings, several stakeholders expressed concern about the expected negative effects on storage, solar and demand response resources.

ISO-NE cautioned it has yet to finalize the proposed market changes and stressed the results do not reflect the effects of winter gas system constraints, which could significantly affect market outcomes in the winter season. The region should get a clearer picture of the potential effects when the RTO presents additional analysis in the coming months.

The Capacity Auction Reforms (CAR) project, intended to take effect in time for the 2028/29 capacity commitment period (CCP), would establish a new capacity accreditation framework; split annual commitment periods into six-month seasons; and cut the time between auctions and CCPs from more than three years to about one month.

The accreditation and seasonal changes would directly affect how much capacity each resource can sell in the market.

The RTO currently accredits resources based on a “qualified capacity” framework that does not account for factors including intermittency, fuel limitations and resource outage rates. Under the CAR proposal, ISO-NE would accredit resources based on their modeled ability to reduce energy shortfall. Accreditation values would be subject to change on an annual and seasonal basis depending on shifts in the characteristics of energy supply and demand in the region.

The timing and length of modeled shortall events would be significant factors in determining accreditation values. For example, short-duration storage would be more valuable for preventing short-duration shortfall events, while intermittent resources would be better at mitigating shortfalls that coincide with their production profile. Because of the dynamic nature of the modeling, adding large amounts of intermittent resources with similar production profiles would reduce the accreditation values of all like resources by reducing the chances of shortfall occurring while they are expected to be performing.

For the 2028/29 CCP, ISO-NE’s modeling estimated the median summer shortfall duration to be about three hours and the median winter duration to be about five hours.

ISO-NE plans to calculate accreditation values based on performance during marginal reliability impact (MRI) hours, which it defines as “hours where additional available capacity would reduce unserved energy in that hour or in a subsequent hour.”

MRI hours include periods of energy shortfall; when storage would be dispatched to avoid unserved energy; and when storage would be unable to charge. Enabling storage conservation or charging can reduce expected shortfall in subsequent hours, ISO-NE noted.

“While summer EUE [expected unserved energy] events last about three hours on average, incorporating the associated dispatch and charging hours shows that total MRI events are considerably longer — averaging roughly nine hours,” said Chris Geissler, director of economic analysis at ISO-NE. “Similar to summer, MRI event duration during winter is also longer than EUE events, with an average of 21 hours.”

The impact analysis shows a reduction in total systemwide capacity under the proposed rule changes. ISO-NE has not forecast how the changes would affect revenues but did estimate how the proposal would affect each resource type’s share of total system capacity.

The near-term results indicate an increase in capacity share for nuclear, non-intermittent hydro, wind, storage-limited oil and dual-fuel resources, and passive DR including energy efficiency.

In contrast, ISO-NE projected significant declines in capacity share for storage, solar and active DR resources.

For storage resources, duration would have a significant effect on capacity value. ISO-NE estimated the reliability value of a four-hour battery to be about twice the value of a two-hour battery in the summer and winter. For wind and solar, offshore wind performed better than onshore in both seasons, and sun-tracking solar outperformed fixed.

Accreditation values varied significantly by season for many resource types. Hydro, wind and oil resources with large storage capacity performed better in the winter, while imports, energy storage and solar performed better in the summer.

ISO-NE forecasts an increased capacity share for gas-only resources in both seasons, with a higher share in the winter because of higher maximum capabilities amid low temperatures.

However, the gas-only results may be misleading, as they do not account for winter pipeline constraints, which can be a major limiting factor for these resources. ISO-NE plans to account for these limitations through a separate “gas capacity demand curve,” which would reduce the winter capacity clearing price for gas-only resources that lack firm fuel arrangements. (See ISO-NE Introduces Approach to Modeling Gas Constraints.)

ISO-NE’s longer-term analysis indicated that adding significant amounts of solar and wind would decrease the per-megawatt reliability value of incremental additions of these resources. For wind resources, the addition of 2,000 MW of capacity in 2035 reduced the reliability benefit of additional wind by about 20% in the winter and more than 40% in the summer.

Several participants expressed concern that ISO-NE is overestimating winter risks — including the duration of winter events — causing accreditation reductions for batteries and solar.

“As the accreditation results currently stand, the design will fail to send investment signals for renewables, demand response and energy storage to participate in New England’s capacity market,” said Alex Lawton, director at Advanced Energy United. “That will deter new supply from entering the market and put upward pressure on electricity prices as demand continues to grow.”

He said the impacts of the new gas demand curve remain a “major unknown,” but this “won’t solve the core problem of severely undervaluing advanced energy technologies.”

Lawton added that he remains “optimistic that the ISO will consider stakeholder feedback, run other scenarios in their model, and make changes that reflect realistic conditions and market behavior so that real system risk drives accreditation, not modeling choices.”

ISO-NE plans to present the results of two additional longer-term modeling cases in April. In May, the RTO plans to discuss the results of an analysis focused on the effects on market clearing outcomes. Outputs of this analysis will include estimates of clearing prices, consumer costs and capacity revenues by resource type.

Virginia Legislature Wraps Up, Passes Clean Energy Bills

The Virginia Legislature wrapped up its main session with Democrats taking advantage of a wider margin in the House of Delegates and recently elected Gov. Abigail Spanberger (D) to push through bills favoring clean energy.

“The General Assembly has passed a slate of legislation squarely focused on making life less expensive for Virginians,” Spanberger said in a March 14 statement. “I’m particularly proud to see lawmakers pass our entire Affordable Virginia Agenda to drive down housing, healthcare and energy costs for Virginians across our Commonwealth. High costs are top of mind in every community — and our agenda directly responds to those concerns.”

She’s reviewing the legislation, which awaits her signature, with an eye toward advancing her affordability agenda, the governor added.

“We have a governor now, who got sworn in shortly after the session started here, too, who’s more supportive of clean energy solutions than her predecessor,” Advanced Energy United’s State Lead for Virginia Jim Purekal said. “‘Her’ predecessor — I like saying that, right? And, also, this governor is more engaged with the General Assembly than her predecessor was.”

While Democrats grew their majority in the House, the commonwealth staggers its state elections, so the Senate was unchanged, he added.

House Bill 397 and Senate Bill 809 are companion bills that require state agencies to develop regulations around re-entering the Regional Greenhouse Gas Initiative, which Spanberger called for after Virginia pulled out of the cap-and-trade market under previous Gov. Glenn Youngkin (R). (See Va. Air Board Approves RGGI Withdrawal.)

“For me, this is about cost savings. RGGI generated hundreds of millions of dollars for Virginia — dollars that went directly to flood mitigation, energy efficiency programs, and lowering bills for families who need help most,” Spanberger said in a speech shortly after taking office in January. “Withdrawing from RGGI did not lower energy costs. In fact, the opposite happened — it just took money out of Virginia’s pocket. It is time to fix that mistake.”

The legislature passed HB 895, which requires Dominion Energy to procure at least 16 GW of short-duration batteries (with 10 or less hours of storage) and 4 GW of long-duration batteries (greater than 10 hours) by 2045.

Other bills are meant to grow solar’s role in Virginia, with HB 711 requiring localities to review projects adequately before they can reject them and HB 807expanding the shared solar program for Dominion.

While Dominion has gotten approval for one natural gas plant through the State Corporation Commission and has plans for more in its integrated resource plan (IRP), Purekal said the focus of Democrats who control the government is on affordability and clean energy.

“We’re seeing a greater appetite for affordable options, and so that’s where the clean energy solutions really come into play,” Purekal said. “Because, you know, 10 years ago, we weren’t able to have this conversation about clean energy solutions. We’re seeing pivotal and drastic drops in cost now for solar and for storage and for wind. But we’re primarily talking about solar storage, really.”

Solar and storage are the fastest resources to deploy on a system seeing substantial demand growth from data centers, he added.

If Virginia doesn’t build its own natural gas plants, it will rely on imports from other states in PJM that are interested in building the facilities, said Stephen Haner. Haner is a former lobbyist who got to know energy policy in Virginia by working for Newport News Shipbuilding and now writes for the web publication Bacon’s Rebellion.

“There’s nothing passing that would ease the path for gas,” Haner said. “There are a number of things passing that create new impediments to gas. They’re rewriting the entire Integrated Resource Plan statute.”

HB 429 would amend the IRP process by requiring the use of the social cost of carbon and limiting Dominion’s options for flexibility around the Virginia Clean Economy Act, he added. It passed both houses on the session’s final day.

Rejoining RGGI when the states that historically shipped excess power east in PJM are not joining will lead to leakage, Haner said.

“You can see the pattern for the years before we were in RGGI,” he added. “You see one output for Dominion plants in the three years in RGGI, those plants all dropped, and then as soon as we got out of RGGI, those plants output went back up again — the gas plants that they’ve got. And that’s what’s going to happen.”

Data centers are driving the load growth in Virginia. SB 253 shifts grid upgrade and capacity costs onto them, Haner said. The bill passed both houses March 14.

The State Corporation Commission recently approved a new rate class for data centers. Judge Kelsey Bagot talked at EPSA’s conference earlier in March about how the regulator is dealing with the growth in data centers. (See EPSA Summit Held with ISO/RTOs in the Middle of the Political Debate.)

Dominion has about 20 GW of new demand under contract and more than 40 GW in its interconnection queue, but it’s unclear how much of that is “real.” New data centers must wait years to connect. They have the incentive to claim a large amount of capacity so they’re not left short when they get to the front of the line, Bagot said.

“You have that incentive on the data center side, at the same time that there truly is this demand that we need to build for,” she added. “And so, you’re trying to balance those two things. I think what we’ve really been working a lot with Dominion and our utilities on; is how can we shift some of that risk onto those entities that are asking for that new capacity? As opposed to having the other captive ratepayers cover the risks associated with potentially over-building for what folks in line say they need.”

Uncertainty around future demand is ubiquitous. It takes four to seven years to power a greenfield facility, while data centers can go up in two, Data Center Coalition CEO Josh Levi said at EPSA’s conference. Uncertainty is also present in the regulatory structure.

“The Virginia State Corporation Commission issued a ruling four months ago on large load tariffs. The General Assembly is in the process of rewriting it,” Levi said. “I mean, uncertainty is very much in play right now.”

NRC Finds Minor Violations, Elevates Oversight of 5 Reactors

The Nuclear Regulatory Commission reports that 90 of the nation’s 95 operational commercial nuclear reactors met the highest category of performance in the 2025 oversight process.

The other five fell into the second performance category — indicating findings of low safety significance — and will face an elevated level of regulatory oversight including additional inspections and follow-up on corrective actions.

No reactors fell to the third or fourth performance categories, which trigger additional NRC oversight, or the fifth, which prompts a shutdown while problems are addressed.

The March 13 announcement of annual assessments for nuclear plants is a reminder of the level of regulation the NRC applies as it faces pressure by the Trump administration to streamline and speed up its regulatory process to facilitate a dramatic expansion of the U.S. nuclear power sector.

This has prompted concerns about the NRC being able to maintain its independence and its core mission of upholding the safety of aging infrastructure that harnesses potentially dangerous technology to produce 18% of U.S. electricity — 784,781 GWh in 2025.

The five reactors flagged for additional attention are Hope Creek in New Jersey, South Texas Project Unit 2, V.C. Summer in South Carolina and Watts Bar 1 and 2 in Tennessee.

PSEG’s Hope Creek got a notice of violation for “Inadequate Identification and Correction of Water Intrusion into Emergency Diesel Generator Lube Oil System” despite multiple indications of a degraded condition. This resulted in loss of probabilistic risk assessment function greater than the allowed outage time.

STP’s South Texas Project Unit 2 was flagged for “Failure to Establish Adequate Preventative Maintenance Instructions Leading to Multiple Component Failures” that resulted in “a partial loss of offsite power, an unplanned reactor trip, and subsequent loss of a safety-related motor control center during recovery activities.”

TVA’s Watts Bar 1 and Watts Bar 2 were dinged for “Failure to Maintain Public Address System” as procedure dictated. From February 2019 to June 2025, TVA failed to characterize as “loss of function” the continuous and progressive failure of multiple speakers important to emergency response and failed to take corrective action or implement compensatory measures.

All of these were determined to be of low safety significance — a white violation, the second-lowest color on a scale that runs from green to white to yellow to red. Other findings at each of the four reactors were classified green — non-violations or non-cited violations.

The NRC website lists numerous green but no white findings for the fifth reactor, Dominion’s V.C. Summer. The NRC’s March 11 letter to Dominion said V.C. Summer was being placed on the supplemental oversight list with the other four reactors because of a “white” finding in the third quarter of 2025.

This might be the “Inadequate Maintenance Strategy Resulting in Turbine-Driven Emergency Feedwater Pump Inoperability,” but that is listed as an “apparent violation” on the NRC website, with no color code.

The “green” findings at the five reactors span a wide range of failures or missteps. They include:

    • Failure to Control a Locked High Radiation Area.
    • Incorrect Rod Control Setup Resulted in Unanticipated Control Rod Withdrawal.
    • Failure to Maintain Quality of Lubricants.
    • Degradation of Main Generator Current Transformer 152C Causes Automatic Turbine and Reactor Trip.
    • Change to Emergency Diesel Generator Operating Procedure Without Obtaining a License Amendment.
    • Failure to Demonstrate Effective Control of a Maintenance Rule Scoped System.
    • Failure to Translate High Head Safety Injection Pump Maximum Shutoff Head into Motor Operated Valve Thrust Calculations.
    • Failure to Remove Rubber Shipping Grommet During Emergency Feedwater Pump Governor Installation.

The NRC deemed all the “green” findings notable enough to report, even if they were not worthy of citations or increased oversight.

Individually and in the aggregate, they are deemed not a threat to safety. But as a whole, they hint at the vast range of potential human errors in these huge, complex systems and point to the degree of scrutiny the NRC applies in seeking and documenting those failures.

President Donald Trump took aim at the NRC’s layers of regulation in one of four May 2025 executive orders intended to streamline nuclear power development. (See Trump Orders Nuclear Regulatory Acceleration, Streamlining.)

The order that focuses on the NRC (EO 14300) seems to be aimed at expediting the approval of new reactors and technology, a stated priority for Trump. But it is blunt in criticizing the entire approach of the nuclear watchdog, as when the president cited “a myopic policy of minimizing even trivial risks.”

He wrote: “Instead of efficiently promoting safe, abundant nuclear energy, the NRC has instead tried to insulate Americans from the most remote risks without appropriate regard for the severe domestic and geopolitical costs of such risk aversion.”

And: “Beginning today, my administration will reform the NRC, including its structure, personnel, regulations and basic operations.”

Where this directive translates to action and what it means for routine processes such as the annual assessments for 95 nuclear reactors remain to be seen, but clarity may be coming.

The baseline inspections now total 2,012 hours per year, according to a Feb. 6 NRC memo recommending revisions. Attachments to the memo include a specific 38% suggested reduction in hours, organizational changes and potential changes to more-than-minor findings.

These last changes could include reducing the number of publicly reported green findings in a way that would not reduce their effectiveness but would reduce the chances of the public getting the wrong impression about the safety implications of those findings, or about the performance of the reactor’s license holder.

The NRC’s website indicates three of 28 planned revisions of rules in response to EO 14300 had been completed as of March 6.

And in January, the Department of Energy eliminated or rewrote numerous safety rules including ALARA, a longstanding core principle that dictated nuclear operators must keep radiation exposure As Low As Reasonably Achievable.

As this wholesale revision moves forward, cutting-edge technology and Cold War-era infrastructure are mingling in NRC’s purview: Dozens of advanced reactor designs are in various stages of completion while nuclear plants that went on the drawing boards in the 1960s and 1970s continue to operate with the equipment and technology of that era.

Constellation’s Limerick Clean Energy Center made news in January with the announcement the NRC had approved the nation’s first-ever wholesale replacement of a nuclear plant’s analog safety systems with a single digital system. (See NRC Approves 1st Digital Conversion of Nuclear Plant Safety Controls.)

This is all the more remarkable when considering that even at 40 years old, Limerick is among the newer plants operating in the U.S. — commercial nuclear power construction all but ceased in the early 1990s.

Operators of some the oldest existing facilities are considering relicensing requests that could extend their operating lifespans to 80 years.

So how did the oldest components of the aging fleet fare in the NRC’s annual assessment?

Constellation’s Nine Mile Point Unit 1 entered commercial service Dec. 1, 1969, and its R.A. Ginna on June 1, 1970. Both recorded capacity factors above 94% in 2022-2024, compared with a national median of 91%. And neither got a writeup from the NRC in 2025.

Nine Mile Point Unit 1 got a handful of “green” findings, none of which were cited as violations. Ginna got just one “green” finding — a non-cited violation for failing to rectify a grease packing condition in a valve actuator the vendor had warned about.

On the other end of the scale, Southern Nuclear’s Vogtle 3 and Vogtle 4 are the newest reactors (and the only “new” ones) in the U.S. fleet, entering commercial operation on July 31, 2023, and April 29, 2024, respectively.

Vogtle 3 got two non-cited “greens,” but it was the same finding reported under two categories.

Vogtle 4 got three different “green” findings a combined eight times under three categories, none resulting in citations.

One of them stands out as a strikingly low-tech flub in such a high-tech setting: propping open fire doors without maintaining a fire watch.

The number of reactors placed on expanded supervision in 2025 is slightly less than the annual average in the 2020s. Nine were flagged in 2024, six in 2023, six in 2022, two in 2021 and four in 2020. Of those, one was placed in the third performance category and the rest in the second performance category.

EDAM Utilities Moving to Develop RA Program

The push to develop a resource adequacy program serving non-CAISO members of the ISO’s Extended Day-Ahead Market appears to be gathering momentum, with backers saying they aim to produce a draft design for the program in April.

That’s a key takeaway from a March 7 letter to the leaders of the CAISO Western Energy Markets (WEM) Body of State Regulators (BOSR), in which six utilities planning to join the EDAM spelled out the clearest vision yet for how the program could take shape: on the footing of the ISO’s Western Energy Imbalance Market.

“The WEIM’s proven ability to support reliable load service makes it a natural foundation for exploring an expanded framework through EDAM and an integrated RA solution,” the utilities said in the letter, which was signed by Mike Wilding, PacifiCorp vice president of energy supply management, on behalf of PacifiCorp, Balancing Authority of Northern California, NV Energy, Portland General Electric (PGE), Public Service Company of New Mexico (PNM) and Turlock Irrigation District.

The letter was addressed to BOSR Chair Gabriel Aguilera, chair of the New Mexico Public Regulation Commission, and Vice Chair John Hammond, a member of the Idaho Public Utilities Commission.

“A voluntary regional RA program aligned with an organized market footprint is expected to deliver value in several areas, including enhanced regional coordination, greater reliability and capacity savings for our customers,” Wilding wrote.

The letter comes nearly five months after a handful of utilities — including NV Energy, PacifiCorp, PGE and PNM — announced their intent to withdraw from the Western Power Pool’s Western Resource Adequacy Program (WRAP), choosing not to commit to the program’s first “binding” season in winter 2027. (See PacifiCorp Next to Leave WRAP After Raising Concerns.)

The WRAP, which was conceived and established before the competition between the EDAM and SPP’s Markets+, is operated by SPP but includes members intending to participate in either day-ahead market — although Markets+ members are required to join it.

Around the same time as the withdrawals, RTO Insider learned some of the withdrawing parties had already begun discussions to create an alternative RA program focused on EDAM participants. (See EDAM Participants Exploring Potential New Western RA Program.)

Wilding said the utilities envision the “offering to encompass the EDAM and WEIM footprint,” and noted they foresee it being governed by the Regional Organization for Western Energy (ROWE), the independent body established by the West-Wide Governance Pathways to oversee the WEIM and EDAM. (See Pathways’ ROWE Could Offer Western RA Program, PGE Says.)

“During the transition, the entities identified [in the letter], all of which are committed to EDAM or leaning toward EDAM, propose to guide the stakeholder process and encourage engagement from all interested parties. We recognize the importance of this initiative, but it is important to note that no official commitments or decisions have been made at this time,” he wrote.

The utilities welcome input from “state regulators, load-serving entities, suppliers and regional partners” as the initiative advances, Wilding wrote.

The effort’s backers intend to release “a draft design for a market-integrated solution” in April and “launch an open transitional stakeholder process to refine the program.” The first step will be to start dialogue during the WEM Regional Issues Forum meeting March 16, the letter said. The RA program is also on a March 19 meeting agenda of the ROWE’s newly established Formation Committee.

“The West faces a transformational moment. By building on the successes of WEIM and EDAM, we all have the opportunity to create a unified framework that advances reliability, affordability, regional transparency and regulatory goals,” Wilding wrote.