System to use sun to power up

By Knoxville News Sentinel


CSA Z463 Electrical Maintenance

Our customized live online or in‑person group training can be delivered to your staff at your location.

  • Live Online
  • 6 hours Instructor-led
  • Group Training Available
Regular Price:
$249
Coupon Price:
$199
Reserve Your Seat Today
Biomass was the renewable fuel du jour as Oak Ridge National Laboratory talked up plans to replace its existing steam plant with a new $40 million system powered by wood waste and by-products.

But just west of ORNL's visitor center on Bethel Valley Road, workers are busy on another project that will tap another of nature's gifts - the sun.

Construction has begun on a 288-foot-long, 51.25 kilowatt solar system that will supply power to the office building that houses researchers associated with ORNL's buildings technology programs. The solar system, coupled with planned energy-efficiency improvements, should supply nearly all the power needs of the building. As a result, after spending the last few years developing the zero-energy home concept, the lab should debut its first zero-energy office building sometime next year.

The project is a relatively small piece of ORNL's larger sustainability initiative that includes the above-mentioned biomass-powered project, part of an $88.1 million energy-savings contract with Johnson Controls that includes a variety of energy-efficiency measures. (See related article in the Business section.)

Construction of the array plus other energy-efficiency improvements such as more efficient air-conditioning units and occupancy sensors for controlling lighting in the building will cost $500,000 to $750,000, according to Greg Palko, energy-efficiency manager for ORNL.

The solar collectors are being installed by Lightwave Solar Electric in Nashville and will operate at 18.7 percent efficiency - much more efficient than the lab's first solar installation near the visitor center, which operates at about 13 percent efficiency.

"The (national) laboratories in general are under a mandate to include more renewable energy in their energy portfolios," said Curtis Maxey, solar researcher at ORNL who, along with Palko, is working on the project. For now the panels will simply be tied into the local node that supplies the building with electricity, Maxey said. Eventually, he said, ORNL may pursue status as a generation partner with TVA, which would allow the lab to sell power back to the grid.

In addition to meeting DOE's renewable and energy-efficiency requirements, the project has research benefits as well, Maxey said.

"We're looking at the effective integration of solar energy into the communities," he said. Researchers will use the system to study power inverter technology and electric power distribution, he said.

For all its visibility and sex appeal, the project won't save the lab any money. The amount of power produced by the systems doesn't really offer a feasible payback, Palko said.

"Relative to building a new steam plant, dollar for dollar it's not comparable," he said. "In our case, it's more of modeling the possible."

Related News

US NRC streamlines licensing for advanced reactors

NRC Advanced Reactor Licensing streamlines a risk-informed, performance-based, technology-inclusive pathway for advanced non-light water reactors, aligning with NEIMA to enable predictable regulatory reviews, inherent safety, clean energy deployment, and industrial heat, hydrogen, and desalination applications.

 

Key Points

A risk-informed, performance-based NRC pathway streamlining licensing for advanced non-light water reactors.

✅ Aligned with NEIMA: risk-informed, performance-based, tech-inclusive

✅ Predictable licensing for advanced non-light water reactor designs

✅ Enables clean heat, hydrogen, desalination beyond electricity

 

The US Nuclear Regulatory Commission (NRC) voted 4-0 to approve the implementation of a more streamlined and predictable licensing pathway for advanced non-light water reactors, aligning with nuclear innovation priorities identified by industry advocates, the Nuclear Energy Institute (NEI) announced, and amid regional reliability measures such as New England emergency fuel stock plans that have drawn cost scrutiny.

This approach is consistent with the Nuclear Energy Innovation and Modernisation Act (NEIMA), a nuclear innovation act passed in 2019 by the US Congress calling for the development of a risk-informed, performance-based and technology inclusive licensing process for advanced reactor developers.

NEI Chief Nuclear Officer Doug True said: “A modernised regulatory framework is a key enabler of next-generation nuclear technologies that, amid ACORE’s challenge to DOE subsidy proposals in energy market proceedings, can help us meet our energy needs while protecting the climate. The Commission’s unanimous approval of a risk-informed and performance-based licensing framework paves the way for regulatory reviews to be aligned with the inherent safety characteristics, smaller reactor cores and simplified designs of advanced reactors.”

Over the last several years the industry’s Licensing Modernisation Project, sponsored by US Department of Energy, led by Southern Nuclear, and supported by NEI’s Advanced Reactor Regulatory Task Force, and influenced by a presidential order to bolster uranium and nuclear energy, developed the guidance for this new framework. Amid shifts in the fuel supply chain, including the U.S. ban on Russian uranium, this approach will inform the development of a new rule for licensing advanced reactors, which NEIMA requires.

“A well-defined licensing path will benefit the next generation of nuclear plants, especially as regions consider New England market overhaul efforts, which could meet a wide range of applications beyond generating electricity such as producing heat for industry, desalinating water, and making hydrogen – all without carbon emissions,” True noted.

 

Related News

View more

Bangladesh develops nuclear power with IAEA Assistance

Bangladesh Rooppur Nuclear Power Plant advances nuclear energy with IAEA support and ROSATOM construction, boosting energy security, baseload capacity, and grid reliability; 2400 MW units aid development, regulatory compliance, and newcomer infrastructure milestones.

 

Key Points

A 2400 MW nuclear project in Rooppur, built with IAEA guidance and ROSATOM, to boost Bangladesh's reliable power.

✅ Two units totaling 2400 MW for stable baseload supply

✅ IAEA Milestones and INIR reviews guide safe deployment

✅ ROSATOM builds; national regulator strengthens oversight

 

The beginning of construction at Bangladesh’s first nuclear power reactor on 30 November 2017 marked a significant milestone in the decade-long process to bring the benefits of nuclear energy to the world’s eighth most populous country. The IAEA has been supporting Bangladesh on its way to becoming the third ‘newcomer’ country to nuclear power in 30 years, following the United Arab Emirates in 2012 and Belarus in 2013.

Bangladesh is in the process of implementing an ambitious, multifaceted development programme to become a middle-income country by 2021 and a developed country by 2041. Vastly increased electricity production, with the goal of connecting 2.7 million more homes to the grid by 2021, is a cornerstone of this push for development, and nuclear energy will play a key role in this area, said Mohammad Shawkat Akbar, Managing Director of Nuclear Power Plant Company Bangladesh Limited. Bangladesh is also working to diversify its energy supply to enhance energy security, reduce its dependence on imports and on its limited domestic resources, he added.

#google# In the region, India's nuclear program is taking steps to get back on track, underscoring broader momentum.

“Bangladesh is introducing nuclear energy as a safe, environmentally friendly and economically viable source of electricity generation,” said Akbar.  The plant in Rooppur, 160 kilometres north-west of Dhaka, will consist of two units, with a combined power capacity of 2400 MW(e). It is being built by a subsidiary of Russia’s State Atomic Energy Corporation ROSATOM. The first unit is scheduled to come online in 2023 and the second in 2024, reflecting progress similar to the UK's latest nuclear power station developments.  “This project will enhance the development of the social, economic, scientific and technological potential of the country,” Akbar said.

The country’s goal of increased electricity production via nuclear energy will soon be a reality, Akbar said. “For 60 years, Bangladesh has had a dream of building its own nuclear power plant. The Rooppur Nuclear Power Plant will provide not only a stable baseload of electricity, but it will enhance our knowledge and allow us to increase our economic efficiency.

 

Milestones for nuclear

Bangladesh is among around 30 countries that are considering, planning or starting the introduction of nuclear power, with milestones at nuclear projects worldwide offering context for this progress. The IAEA assists them in developing their programmes through the Milestones Approach — a methodology that provides guidance on working towards the establishment of nuclear power in a newcomer country, including the associated infrastructure. It focuses on pointing out gaps, if any, in countries’ progress towards the introduction of nuclear power.

The IAEA has been supporting Bangladesh in developing its nuclear power infrastructure, including in establishing a regulatory framework and developing a radioactive waste-management system. This support has been delivered under the IAEA technical cooperation programme and is partially funded through the Peaceful Uses Initiative.

Nuclear infrastructure is multifaceted, containing governmental, legal, regulatory and managerial components, in addition to the physical infrastructure. The Milestones Approach consists of three phases, with a milestone to be reached at the end of each.

The first phase involves considerations before a decision is taken to start a nuclear power programme and concludes with the official commitment to the programme. The second phase entails preparatory work for the contracting and construction of a nuclear power plant, as seen in Bulgaria's nuclear project planning, ending with the commencement of bids or contract negotiations for the construction. The final phase includes activities to implement the nuclear power plant, such as the final investment decision, contracting and construction. The duration of these phases varies by country, but they typically take between 10 and 15 years.

“The IAEA Milestones Approach is a guiding document and the Integrated Work Plan (IWP) is the important means of bringing all of the stakeholders in Bangladesh together to ensure the fulfilment of all safety, security, and safeguards requirements of the Rooppur NPP project,” said Akbar. “This IWP enabled Bangladesh to develop a holistic approach to implementing IAEA guidance as well as cooperating with national stakeholders and other bilateral partners towards the development of a national nuclear power programme.”

When completed, the two units of the Rooppur Nuclear Power Plant will have a combined power capacity of 2400 MW(e). (Photo: Arkady Sukhonin/Rosatom)

 

INIR Mission

The Integrated Nuclear Infrastructure Review (INIR) is a holistic peer review to assist Member States in assessing the status of their national infrastructure for introducing nuclear power. The IAEA completed its first INIR mission to Bangladesh in November 2011, making recommendations on how to develop a plan to establish the nuclear infrastructure. Nearly five years later, in May 2016, a follow-up mission was conducted, which noted the progress made — Bangladesh had established a nuclear regulatory body, had chosen a site for the power plant and had completed site characterization and environmental impact assessment.

“The IAEA and other bodies, including those from experienced countries, can and do provide support, but the responsibility for safety and security will lie with the Government,” said Dohee Hahn, Director of the IAEA’s Division of Nuclear Power, at the ceremony for the pouring of the first nuclear safety-related concrete at Rooppur on 30 November 2017. “The IAEA stands ready to continue supporting Bangladesh in developing a safe, secure, peaceful and sustainable nuclear power programme.”

Supporting Infrastructure for Introducing a Nuclear Power Plant in Bangladesh: the IAEA Assists with the Review of Regulatory Guidance on Site Evaluation

How the IAEA Assists Newcomer Countries in Building Their Way to Sustainable Energy

"Exciting times for nuclear power," IAEA Director General Says

 

Related News

View more

Saudis set to 'boost wind by over 6GW'

Saudi Arabia Wind Power Market set to lead the Middle East, driven by Vision 2030 renewables goals, REPDO tenders, and PIF backing, adding 6.2GW wind capacity by 2028 alongside solar PV diversification.

 

Key Points

It is the emerging national segment leading Middle East wind growth, targeting 6.2GW by 2028 under Vision 2030 policies.

✅ Adds 6.2GW, 46% of regional wind capacity by 2028

✅ REPDO tenders and PIF funding underpin pipeline

✅ Targets: 16GW wind, 40GW solar under Vision 2030

 

Saudi Arabia will become a regional heavyweight in the Middle East's wind power market adding over 6GW in the next 10 years, according to new research by Wood Mackenzie Power & Renewables.

The report – 'Middle East Wind Power Market Outlook, 2019-2028’ – said developers will build 6.2GW of wind capacity in the country or 46% of the region’s total wind capacity additions between 2019 and 2028.

Wood Mackenzie Power & Renewables senior analyst Sohaib Malik said: “The integration of renewables in Vision 2030’s objectives underlines strong political commitment within Saudi Arabia.

“The level of Saudi ambition for wind and solar PV varies significantly, despite the cost parity between both technologies during the first round of tenders in 2018.”

Saudi Arabia has set a 16GW target for wind by 2030 and 40GW for solar, plans to solicit 60 GW of clean energy over the next decade, Wood Mackenzie added.

“Moving forward, the Renewable Energy Project Development Office will award 850MW of wind capacity in 2019, which is expected to be commissioned in 2021-2022, and increase the local content requirement in future tendering rounds,” Malik said.

However, Saudi Arabia will fall short of its current 2030 renewables target, despite growth projections and regional leadership, the report said.

Some 70% of the renewables capacity target is to be supported by the Public Investment Fund (PIF), the Saudi sovereign wealth fund, while the remaining capacity is to be awarded through REPDO.

“A central concern is the PIF’s lack of track record in the renewables sector and its limited in-house sectoral expertise,” said Malik

“REPDO, on the other hand, completed two renewables request for proposals after pre-developing the sites,” he said.

PIF is estimated to have $230bn of assets – targeted to reach $2 trillion under Vision 2030 – driven by investments in a variety of sectors ranging from electric vehicles to public infrastructure, Wood Mackenzie said.

“There is little doubt about the fund’s financial muscle, however, its past investment strategy focused on established firms in traditional industries,” Malik added.

“Aspirations to develop a value chain for wind and PV technologies locally is a different ball game and requires the PIF to acquire new capabilities for effective oversight of these ventures,” he said.

The report noted that regional volatility is expected to remain, with strong positive growth, driven by Jordan and Iran in 2018 expected to reverse in 2019, and policy shifts, as in Canada’s scaled-back projections, can influence outcomes.

Post-2020 Wood Mackenzie Power & Renewables sees regional demand returning to steady growth as global renewables set more records elsewhere.

“In 2018, developers added 185MW and 63MW of wind capacity in Jordan and Iran, respectively, compared to 53MW of capacity across the entire region in 2017, following a record year for renewables in 2016,” said Malik.

“The completion of the 89MW Al Fujeij and the 86MW Al Rajef projects in 2018 indicates that Jordan has 375MW of the region’s operational 675MW wind capacity.

“Iran followed with 278MW of installed capacity at the end of 2018. A slowdown in 2019 is expected, as project development activity softens in Iran.

“Additionally, delays in awarding the 400MW Dumat Al Jandal project in Saudi Arabia will limit annual capacity additions to 184MW.”

He added that a maturing project pipeline in the region supports the 2020-2021 outlook, even as wind power grew despite Covid-19 globally.

“Saudi Arabian demand serves as the foundation for regional demand. Regional demand diversification is also occurring, with Lebanon set to add 200-400MW to its existing permitted capacity pipeline of 202MW in 2019,” he said

“These developments pave the way for the addition of 2GW of wind capacity between 2019 and 2021.”

Wood Mackenzie Power & Renewables added that the outlook for solar in the region is “much more positive” than wind.

“Compared to only 6GW of wind power capacity, developers will add 53GW of PV capacity through 2024,” said Malik.

He added: “Solar PV, supported by trends such as China’s rapid PV growth in 2016, has become a natural choice for many countries in the region, which is endowed with world class solar energy resources.

“The increased focus on solar energy is demonstrated by ambitious PV targets across the region.”

 

Related News

View more

US looks to decommission Alaskan military reactor

SM-1A Nuclear Plant Decommissioning details the US Army Corps of Engineers' removal of the Fort Greely reactor, Cold War facility dismantling, environmental monitoring, remote-site power history, and timeline to 2026 under a deactivated nuclear program.

 

Key Points

Army Corps plan to dismantle Fort Greely's SM-1A reactor and complete decommissioning of remaining systems by 2026.

✅ Built for remote Arctic radar support during the Cold War

✅ High costs beat diesel; program later deemed impractical

✅ Reactor parts removed; residuals monitored; removal by 2026

 

The US Army Corps of Engineers has begun decommissioning Alaska’s only nuclear power plant, SM-1A, which is located at Fort Greely, even as new US reactors continue to take shape nationwide. The $17m plant closed in 1972 after ten years of sporadic operation. It was out of commission from 1967 to 1969 for extensive repairs. Much of has already been dismantled and sent for disposal, and the rest, which is encased in concrete, is now to be removed.

The plant was built as part of an experimental programme to determine whether nuclear facilities, akin to next-generation nuclear concepts, could be built and operated at remote sites more cheaply than diesel-fuelled plants.

"The main approach was to reduce significant fuel-transportation costs by having a nuclear reactor that could operate for long terms, a concept echoed in the NuScale SMR safety evaluation process, with just one nuclear core," Brian Hearty said. Hearty manages the Army Corps of Engineers’ Deactivated Nuclear Power Plant Program.

#google#

He said the Army built SM-1A in 1962 hoping to provide power reliably at remote Arctic radar sites, where in similarly isolated regions today new US coal plants may still be considered, intended to detect incoming missiles from the Soviet Union at the height of the Cold War. He added that the programme worked but not as well as Pentagon officials had hoped. While SM-1A could be built and operated in a cold and remote location, its upfront costs were much higher than anticipated, and it costs more to maintain than a diesel power plant. Moreover, the programme became irrelevant because of advances in Soviet rocket science and the development of intercontinental ballistic missiles.

Hearty said the reactor was partially dismantled soon after it was shut down. “All of the fuel in the reactor core was removed and shipped back to the Atomic Energy Commission (AEC) for them to either reprocess or dispose of,” he noted. “The highly activated control and absorber rods were also removed and shipped back to the AEC.”

The SM-1A plant produced 1.8MWe and 20MWt, including steam, which was used to heat the post. Because that part of the system was still needed, Army officials removed most of the nuclear-power system and linked the heat and steam components to a diesel-fired boiler. However, several parts of the nuclear system remained, including the reactor pressure vessel and reactor coolant pumps. “Those were either kept in place, or they were cut off and laid down in the tall vapour-containment building there,” Hearty said. “And then they were grouted and concreted in place.” The Corps of Engineers wants to remove all that remains of the plant, but it is as yet unclear whether that will be feasible.

Meanwhile, monitoring for radioactivity around the facility shows that it remains at acceptable levels. “It would be safe to say there’s no threat to human health in the environment,” said Brenda Barber, project manager for the decommissioning. Work is still in its early stages and is due to be completed in 2026 at the earliest. Barber said the Corps awarded the $4.6m contract in December to a Virginia-based firm to develop a long-range plan for the project, similar in scope to large reactor refurbishment efforts elsewhere. Among other things, this will help officials determine how much of the SM-1A will remain after it’s decommissioned. “There will still be buildings there,” she said. “There will still be components of some of the old structure there that may likely remain.”

 

Related News

View more

B.C.'s Green Energy Ambitions Face Power Supply Challenges

British Columbia Green Grid Constraints underscore BC Hydro's rising imports, peak demand, electrification, hydroelectric variability, and transmission bottlenecks, challenging renewable energy expansion, energy security, and CleanBC targets across industry and zero-emission transportation.

 

Key Points

They are capacity and supply limits straining B.C.'s clean electrification, driving imports and risking reliability.

✅ Record 25% imports in FY2024 raise emissions and costs

✅ Peak demand and transmission limits delay new connections

✅ Drought reduces hydro output; diversified generation needed

 

British Columbia's ambitious green energy initiatives are encountering significant hurdles due to a strained electrical grid and increasing demand, with a EV demand bottleneck adding pressure. The province's commitment to reducing carbon emissions and transitioning to renewable energy sources is being tested by the limitations of its current power infrastructure.

Rising Demand and Dwindling Supply

In recent years, B.C. has experienced a surge in electricity demand, driven by factors such as population growth, increased use of electric vehicles, and the electrification of industrial processes. However, the province's power supply has struggled to keep pace, and one study projects B.C. would need to at least double its power output to electrify all road vehicles. In fiscal year 2024, BC Hydro imported a record 13,600 gigawatt hours of electricity, accounting for 25% of the province's total consumption. This reliance on external sources, particularly from fossil-fuel-generated power in the U.S. and Alberta, raises concerns about energy security and sustainability.

Infrastructure Limitations

The current electrical grid is facing capacity constraints, especially during peak demand periods, and regional interties such as a proposed Yukon connection are being discussed to improve reliability. A report from the North American Electric Reliability Corporation highlighted that B.C. could be classified as an "at-risk" area for power generation as early as 2026. This assessment underscores the urgency of addressing infrastructure deficiencies to ensure a reliable and resilient energy supply.

Government Initiatives and Investments

In response to these challenges, the provincial government has outlined plans to expand the electrical system. Premier David Eby announced a 10-year, $36-billion investment to enhance the grid's capacity, including grid development and job creation measures to support local economies. The initiative focuses on increasing electrification, upgrading high-voltage transmission lines, refurbishing existing generating facilities, and expanding substations. These efforts aim to meet the growing demand and support the transition to clean energy sources.

The Role of Renewable Energy

Renewable energy sources, particularly hydroelectric power, play a central role in B.C.'s energy strategy. However, the province's reliance on hydroelectricity has its challenges. Drought conditions in recent years have led to reduced water levels in reservoirs, impacting the generation capacity of hydroelectric plants. This variability underscores the need for a diversified energy mix, with options like a hydrogen project complementing hydro, to ensure a stable and reliable power supply.

Balancing Environmental Goals and Energy Needs

B.C.'s commitment to environmental sustainability is evident in its policies, such as the CleanBC initiative, which aims to phase out natural gas heating in new homes by 2030 and achieve 100% zero-emission vehicle sales by 2035, supported by networks like B.C.'s Electric Highway that expand charging access. While these goals are commendable, they place additional pressure on the electrical grid. The increased demand from electric vehicles and electrified heating systems necessitates a corresponding expansion in power generation and distribution infrastructure.

British Columbia's green energy ambitions are commendable and align with global efforts to combat climate change. However, achieving these goals requires a robust and resilient electrical grid capable of meeting the increasing demand for power. The province's reliance on external power sources and the challenges posed by climate variability highlight the need for strategic investments in infrastructure and a diversified energy portfolio, guided by BC Hydro review recommendations to keep electricity affordable. By addressing these challenges proactively, B.C. can pave the way for a sustainable and secure energy future.

 

Related News

View more

Ontario's electricity operator kept quiet about phantom demand that cost customers millions

IESO Fictitious Demand Error inflated HOEP in the Ontario electricity market, after embedded generation was mis-modeled; the OEB says double-counted load lifted wholesale prices and shifted costs via the Global Adjustment.

 

Key Points

An IESO modeling flaw that double-counted load, inflating HOEP and charges in Ontario's wholesale market.

✅ Double-counted unmetered load from embedded generation

✅ Inflated HOEP; shifted costs via Global Adjustment

✅ OEB flagged transparency; exporters paid more

 

For almost a year, the operator of Ontario’s electricity system erroneously counted enough phantom demand to power a small city, causing prices to spike and hundreds of millions of dollars in extra charges to consumers, according to the provincial energy regulator.

The Independent Electricity System Operator (IESO) also failed to tell anyone about the error once it noticed and fixed it.

The error likely added between $450 million and $560 million to hourly rates and other charges before it was fixed in April 2017, according to a report released this month by the Ontario Energy Board’s Market Surveillance Panel.

It did this by adding as much as 220 MW of “fictitious demand” to the market starting in May 2016, when the IESO started paying consumers who reduced their demand for power during peak periods. This involved the integration of small-scale embedded generation (largely made up of solar) into its wholesale model for the first time.

The mistake assumed maximum consumption at such sites without meters, and double-counted that consumption.

The OEB said the mistake particularly hurt exporters and some end-users, who did not benefit from a related reduction of a global adjustment rate applicable to other customers.

“The most direct impact of the increase in HOEP (Hourly Ontario Energy Price) was felt by Ontario consumers and exporters of electricity, who paid an artificially high HOEP, to the benefit of generators and importers,” the OEB said.

The mix-up did not result in an equivalent increase in total system costs, because changes to the HOEP are offset by inverse changes to a electricity cost allocation mechanism such as the Global Adjustment rate, the OEB noted.


A chart from the OEB's report shows the time of day when fictitious demand was added to the system, and its influence on hourly rates.

Peak time spikes
The OEB said that the fictitious demand “regularly inflated” the hourly price of energy and other costs calculated as a direct function of it.

For almost a year, Ontario's electricity system operator @IESO_Tweets erroneously counted enough phantom demand to power a small city, causing price spikes and hundreds of millions in charges to consumers, @OntEnergyBoard says. @5thEstate reports.

It estimated the average increase to the HOEP was as much as $4.50/MWh, but that price spikes, compounded by scheduled OEB rate changes, would have been much higher during busier times, such as the mid-morning and early evening.

“In times of tight supply, the addition of fictitious demand often had a dramatic inflationary impact on the HOEP,” the report said.

That meant on one summer evening in 2016 the hourly rate jumped to $1,619/MWh, it said, which was the fourth highest in the history of the Ontario wholesale electricity market.

“Additional demand is met by scheduling increasingly expensive supply, thus increasing the market price. In instances where supply is tight and the supply stack is steep, small increases in demand can cause significant increases in the market price.

The OEB questioned why, as of September this year, the IESO had failed to notify its customers or the broader public, amid a broader auditor-regulator dispute that drew political attention, about the mistake and its effect on prices.

“It's time for greater transparency on where electricity costs are really coming from,” said Sarah Buchanan, clean energy program manager at Environmental Defence.

“Ontario will be making big decisions in the coming years about whether to keep our electricity grid clean, or burn more fossil fuels to keep the lights on,” she added. “These decisions need to be informed by the best possible evidence, and that can't happen if critical information is hidden.”

In a response to the OEB report on Monday, the IESO said its own initial analysis found that the error likely pushed wholesale electricity payments up by $225 million. That calculation assumed that the higher prices would have changed consumer behaviour, while upcoming electricity auctions were cited as a way to lower costs, it said.

In response to questions, a spokesperson said residential and small commercial consumers would have saved $11 million in electricity costs over the 11-month period, even as a typical bill increase loomed province-wide, while larger consumers would have paid an extra $14 million.

That is because residential and small commercial customers pay some costs via time-of-use rates, including a temporary recovery rate framework, the IESO said, while larger customers pay them in a way that reflects their share of overall electricity use during the five highest demand hours of the year.

The IESO said it could not compensate those that had paid too much, given the complexity of the system, and that the modelling error did not have a significant impact on ratepayers.

While acknowledging the effects of the mistake would vary among its customers, the IESO said the net market impact was less than $10 million, amid ongoing legislation to lower electricity rates in Ontario.

It said it would improve testing of its processes prior to deployment and agreed to publicly disclose errors that significantly affect the wholesale market in the future.

 

Related News

View more

Sign Up for Electricity Forum’s Newsletter

Stay informed with our FREE Newsletter — get the latest news, breakthrough technologies, and expert insights, delivered straight to your inbox.

Electricity Today T&D Magazine Subscribe for FREE

Stay informed with the latest T&D policies and technologies.
  • Timely insights from industry experts
  • Practical solutions T&D engineers
  • Free access to every issue

Live Online & In-person Group Training

Advantages To Instructor-Led Training – Instructor-Led Course, Customized Training, Multiple Locations, Economical, CEU Credits, Course Discounts.

Request For Quotation

Whether you would prefer Live Online or In-Person instruction, our electrical training courses can be tailored to meet your company's specific requirements and delivered to your employees in one location or at various locations.