Xcel uses wood chips for generation in Wisconsin

By Milwaukee Journal Sentinel


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Xcel Energy Inc. has announced that its power plant in northern Wisconsin will be the largest in the Midwest to make electricity by burning wood chips.

The utility will invest $55 million to $70 million to convert a coal-fired boiler to one that would convert chipped waste wood from northern WisconsinÂ’s forests into a gas for power production.

Xcel is an eight-state utility company based in Minneapolis. Its Wisconsin electric and natural gas utility is based in Eau Claire.

The initiative is part of XcelÂ’s strategy to become a leader in production of renewable energy, a plan that could reap financial rewards if the federal government moves to regulate emissions linked to global warming.

Through its wind farms based primarily in Minnesota, Xcel is the largest producer of wind energy in the country, according to the American Wind Energy Association. The company also has 19 dams generating hydroelectric power on rivers in northern Wisconsin.

The Ashland power plant consists of three boilers, two of which burn both biomass and a small amount of coal, and one that burns coal exclusively. The new proposal, to be filed with state regulators this fall, would replace that coal-only boiler with a biomass-to-gas system, company spokesman Brian Elwood said.

One concern, he said, was whether there would be enough waste wood to supply the plant. A study by the Madison-based Energy Center of Wisconsin found there would be enough wood left after forests are logged to supply an expansion, he said.

“One of the nice things about that plant is where it’s located. It’s obviously a very wood-rich area,” Elwood said. “There is available waste wood that could be used.”

In 1979, the Bay Front Power Plant in Ashland became the first utility-owned plant in the country to burn waste wood.

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Cost of US nuclear generation at ten-year low

US Nuclear Generating Costs 2017 show USD33.50/MWh for nuclear energy, the lowest since 2008, as capital expenditures, fuel costs, and operating costs declined after license renewals and uprates, supporting a reliable, low-carbon grid.

 

Key Points

The 2017 US nuclear average was USD33.50/MWh, lowest since 2008, driven by reduced capital, fuel, and operating costs.

✅ Average cost USD33.50/MWh, lowest since 2008

✅ Capital, fuel, O&M costs fell sharply since 2012 peak

✅ License renewals, uprates, market reforms shape competitiveness

 

Average total generating costs for nuclear energy in 2017 in the USA were at their lowest since 2008, according to a study released by the Nuclear Energy Institute (NEI), amid a continuing nuclear decline debate in other regions.

The report, Nuclear Costs in Context, found that in 2017 the average total generating cost - which includes capital, fuel and operating costs - for nuclear energy was USD33.50 per megawatt-hour (MWh), even as interest in next-generation nuclear designs grows among stakeholders. This is 3.3% lower than in 2016 and more than 19% below 2012's peak. The reduction in costs since 2012 is due to a 40.8% reduction in capital expenditures, a 17.2% reduction in fuel costs and an 8.7% reduction in operating costs, the organisation said.

The year-on-year decline in capital costs over the past five years reflects the completion by most plants of efforts to prepare for operation beyond their initial 40-year licence. A few major items - a series of vessel head replacements; steam generator replacements and other upgrades as companies prepared for continued operation, and power uprates to increase output from existing plants - caused capital investment to increase to a peak in 2012. "As a result of these investments, 86 of the [USA's] 99 operating reactors in 2017 have received 20-year licence renewals and 92 of the operating reactors have been approved for uprates that have added over 7900 megawatts of electricity capacity. Capital spending on uprates and items necessary for operation beyond 40 years has moderated as most plants are completing these efforts," it says.

Since 2013, seven US nuclear reactors have shut down permanently, with the Three Mile Island debate highlighting wider policy questions, and another 12 have announced their permanent shutdown. The early closure for economic reasons of reliable nuclear plants with high capacity factors and relatively low generating costs will have long-term economic consequences, the report warns: replacement generating capacity, when needed, will produce more costly electricity, fewer jobs that will pay less, and, for net-zero emissions objectives, more pollution, it says.

NEI Vice President of Policy Development and Public Affairs John Kotek said the "hardworking men and women of the nuclear industry" had done an "amazing job" reducing costs through the institute's Delivering the Nuclear Promise campaign and other initiatives, in line with IAEA low-carbon lessons from the pandemic. "As we continue to face economic headwinds in markets which do not properly compensate nuclear plants, the industry has been doing its part to reduce costs to remain competitive," he said.

"Some things are in urgent need of change if we are to keep the nation's nuclear plants running and enjoy their contribution to a reliable, resilient and low-carbon grid. Namely, we need to put in place market reforms that fairly compensate nuclear similar to those already in place in New York, Illinois and other states," Kotek added.

Cost information in the study was collected by the Electric Utility Cost Group with prior years converted to 2017 dollars for accurate historical comparison.

 

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Bomb Cyclone Leaves Half a Million Without Power in Western Washington

Western Washington Bomb Cyclone unleashed gale-force winds, torrential rain, and coastal flooding, causing massive power outages from Seattle to Tacoma; storm surge, downed trees, and blocked roads hindered emergency response and infrastructure repairs.

 

Key Points

A rapidly deepening storm with severe winds, rain, flooding, and major power outages across Western Washington.

✅ Rapid barometric pressure drop intensified the system

✅ Gale-force winds downed trees and power lines

✅ Coastal flooding and storm surge disrupted transport

 

A powerful "bomb cyclone" recently hit Western Washington, causing widespread destruction across the region. The intense storm left more than half a million residents without power, similar to B.C. bomb cyclone outages seen to the north, with outages affecting communities from Seattle to Olympia. This weather phenomenon, marked by a rapid drop in atmospheric pressure, unleashed severe wind gusts, heavy rain, and flooding, causing significant disruption to daily life.

The bomb cyclone, which is a rapidly intensifying storm, typically features a sharp drop in barometric pressure over a short period of time. This creates extreme weather conditions, including gale-force winds, torrential rain, and coastal flooding, as seen during California storm impacts earlier in the season. In Western Washington, the storm struck just as the region was beginning to prepare for the winter season, catching many off guard with its strength and unpredictability.

The storm's impact was immediately felt as high winds downed trees, power lines, and other infrastructure. By the time the worst of the storm had passed, utility companies had reported widespread power outages, with more than 500,000 customers losing electricity. The outages were particularly severe in areas like Seattle, Tacoma, and the surrounding communities. Crews worked tirelessly in difficult conditions to restore power, but many residents faced extended outages, underscoring US grid climate vulnerabilities that complicate recovery efforts, with some lasting for days due to the scope of the damage.

The power outages were accompanied by heavy rainfall, leading to localized flooding. Roads were inundated, making it difficult for first responders and repair crews to reach affected areas. Emergency services were stretched thin as they dealt with downed trees, blocked roads, and flooded neighborhoods. In some areas, floodwaters reached homes, forcing people to evacuate. In addition, several schools were closed, and public transportation services were temporarily halted, leaving commuters stranded and businesses unable to operate.

As the storm moved inland, its effects continued to be felt. Western Washington’s coastal regions were hammered by high waves and storm surges, further exacerbating the damage. The combination of wind and rain also led to hazardous driving conditions, prompting authorities to advise people to stay off the roads unless absolutely necessary.

While power companies worked around the clock to restore electricity, informed by grid resilience strategies that could help utilities prepare for future events, challenges persisted. Fallen trees and debris blocked access to repair sites, and the sheer number of outages made it difficult for crews to restore power quickly. Some customers were left in the dark for days, forced to rely on generators, candles, and other makeshift solutions. The storm's intensity left a trail of destruction, requiring significant resources to address the damages and rebuild critical infrastructure.

In addition to the immediate impacts on power and transportation, the bomb cyclone raised important concerns about climate change and the increasing frequency of extreme weather events. Experts note that storms like these are becoming more common, with rapid intensification leading to more severe consequences and compounding pressures such as extreme-heat electricity costs for households. As the planet warms, scientists predict that such weather systems will continue to grow in strength, posing greater challenges to cities and regions that are not always prepared for such extreme events.

In the aftermath of the storm, local governments and utility companies faced the daunting task of not only restoring services but also assessing the broader impact of the storm on communities. Many areas, especially those hit hardest by flooding and power outages, will require substantial recovery efforts. The devastation of the bomb cyclone highlighted the vulnerability of infrastructure in the face of rapidly changing weather patterns and water availability, as seen in BC Hydro drought adaptations nearby, and reinforced the need for greater resilience in the face of future storms.

The storm's impact on the Pacific Northwest is a reminder of the power of nature and the importance of preparedness. As Western Washington recovers, there is a renewed focus on strengthening infrastructure, including expanded renewable electricity to diversify supply, improving emergency response systems, and ensuring that communities are better equipped to handle the challenges posed by increasingly severe weather events. For now, residents remain hopeful that the worst is behind them and are working together to rebuild and prepare for whatever future storms may bring.

The bomb cyclone has left an indelible mark on Western Washington, but it also serves as a call to action for better preparedness, more robust infrastructure, and a greater focus on combating climate change to mitigate the impact of such extreme weather in the future.

 

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Quebec's electricity ambitions reopen old wounds in Newfoundland and Labrador

Quebec Churchill Falls power deal renewal spotlights Hydro-Que9bec's Labrador hydroelectricity, Churchill River contract extension, Gull Island prospects, and Innu Nation rights, as demand from EV battery manufacturing and the green economy outpaces provincial supply.

 

Key Points

Extending Quebec's low-price Churchill Falls contract to secure Labrador hydro and address Innu Nation rights.

✅ 1969 contract delivers ~30 TWh at very low fixed price.

✅ Newfoundland seeks higher rates, equity, and consultation.

✅ Innu Nation demands benefits, consent, and land remediation.

 

As Quebec prepares to ramp up electricity production to meet its ambitious economic goals, the government is trying to extend a power deal that has caused decades of resentment in Newfoundland and Labrador.

Around 15 per cent of Quebec's electricity comes from the Churchill Falls dam in Labrador, through a deal set to expire in 2041 that is widely seen as unfair. Quebec Premier François Legault not only wants to extend the agreement, he wants another dam on the Churchill River and, for now, has closed the door on nuclear power as an option to help make his province what he has called a "world leader for the green economy."

But renewing that contract "won't be easy," Normand Mousseau, scientific director of the Trottier Energy Institute at Polytechnique Montréal, said in a recent interview. Extending the Churchill Falls deal is not essential to meet Quebec's energy plans, but without it, Mousseau said, "we would have some problems."

The Legault government is enticing global companies, such as manufacturers of electric vehicle batteries, to set up shop in the province and access its hydroelectricity. But demand for Quebec's power has exceeded its supply, and Ontario has chosen not to renew a power-purchase deal with Quebec, limiting the government's vision.

Last month, Quebec's hydro utility released its strategic plan calling for a production increase of 60 terawatt hours by 2035, which represents the installed capacity of three of Hydro-Québec's largest facilities. Churchill Falls produces roughly 30 terawatt hours, and Quebec would need to replace that power if it can't strike a deal to extend the contract, Mousseau said.

If Quebec wants to keep buying power from Churchill Falls, the government is going to have to pay more, said Mousseau, who is also a physics professor at Université de Montréal. "We're paying one-fifth of a cent a kilowatt hour — that's not much," he said.

Under the 1969 contract, Quebec assumed most of the financial risk of building the Churchill Falls dam in exchange for the right to buy power at a fixed price. The deal has generated more than $28 billion for Hydro-Québec; it has returned $2 billion to Newfoundland and Labrador.

That lopsided deal has stoked anti-Quebec sentiment in Newfoundland and Labrador and contributed to nationalist politics, including threats of separation from Canada around a decade and a half ago, when Danny Williams was premier, said Jerry Bannister, a history professor at Dalhousie University.

"We tend to forget what it was like during the Williams era — he hauled down the Canadian flag," Bannister said. "There was a type of angry, combative nationalism which defined energy development. And particularly Muskrat Falls, it was payback, it was revenge."

Power from the Muskrat Falls generating station, also on the Churchill River, would be sold to Nova Scotia instead of Quebec. But that project has suffered technical problems and cost overruns since, and as of June 29, the price of Muskrat Falls had reached $13.5 billion; the province had estimated the total cost would be $7.4 billion when it sanctioned the project in 2012.

Anti-Quebec feelings may have subsided, but Bannister said the Churchill Falls deal continues to influence Newfoundland politics.

In September, Premier Andrew Furey said Legault would have to show him the money(opens in a new tab) to extend th Legault's office said Tuesday that discussions are ongoing, while the Newfoundland and Labrador government said in an emailed statement Thursday that it wants to maximize the value of its "assets and future opportunities" along the Churchill River.

Whatever negotiations are happening, Grand Chief Simon Pokue of the Innu Nation of Labrador(opens in a new tab) said he has been left out of them.

Churchill Falls flooded 6,500 square kilometres of traditional Innu land, Pokue said, adding that in response, the Innu Nation filed a $4 billion lawsuit against Hydro-Québec in 2020, which is ongoing.

"A lot of damage has been done to our lands, our land is flooded and we'll never see it again," Pokue said in a recent interview. "Nobody will ever repair that."

As well, a portion of Muskrat Falls profits was supposed to go to the Innu Nation, but the cost overruns and a refinancing deal between the federal government and Newfoundland and Labrador have limited whatever money they will see.

If Legault wants another dam on the Churchill River, at Gull Island, the Innu Nation needs to be paid the kind of money it was expecting from Muskrat Falls, he said.

"You did it once, but you're not going to do it again," Pokue said. "It's not going to start until we are consulted and involved."

Meanwhile, Quebec may face competition for Churchill Falls power, Mousseau said, with at least one Labrador mining company expressing interest in buying a significant portion of its output — though he added that the dam's capacity could be increased. The low price paid by Quebec has meant there has been little incentive to upgrade the plant's turbines.

As demand for electricity rises across the country, Mousseau said he thinks it would be better for provinces to work together, sharing expertise and costs, for example through NB Power deals to import more Quebec electricity as they look across provincial borders to find the best locations for projects, rather than acting as rivals.

"We need to talk and work with other provinces, and some propose an independent planning body to guide this, but for this you need to build confidence, and there's no confidence from the Newfoundland side with respect to Quebec," he said. "So that's a challenge: how do you work on this relationship that has been broken for 50 years?"e contract, but the two premiers have said little since.

 

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NT Power Penalized $75,000 for Delayed Disconnection Notices

NT Power OEB Compliance Penalty highlights a $75,000 fine for improper disconnection notices, 14-day rule violations, process oversight failures, refunds, LEAP support, and corrective training to strengthen consumer protection and regulatory adherence in Ontario areas.

 

Key Points

A $75,000 OEB fine to NT Power for improper disconnection notices; refunds, LEAP support, and improved compliance.

✅ $75k administrative monetary penalty; $25k LEAP donation; refunds

✅ 870 notices misdated; 14-day rule training implemented

✅ 10 disconnects reconnected; $100 goodwill credits

 

The Ontario Energy Board recently ruled against Newmarket-Tay Power Distribution Ltd. (NT Power), fining them $75,000 for failing to issue timely disconnection notices to 870 customers between April and August 2022. These notices did not comply with the Ontario Energy Board's distribution system code, similar to standards reaffirmed in the OEB decision on Hydro One rates earlier this year, which mandates a minimum 14-day notice period before disconnection.

Out of the affected customers, ten had their electricity services disconnected, and six were additionally charged reconnection fees. However, NT Power has since reconnected all disconnected customers and refunded the reconnection fees, as confirmed by the Ontario Energy Board.

In response to these issues, NT Power has voluntarily accepted an assurance of compliance. This agreement stipulates that NT Power will pay a $75,000 administrative monetary penalty. Furthermore, they will make an additional payment of $25,000 to the Salvation Army's Northridge Community Church, which administers the Low-income Energy Assistance Program (LEAP) within NT Power's service area, aligning with broader efforts to reduce costs for industry highlighted by Canadian Manufacturers & Exporters recently, according to the association.

This is not the first time NT Power has faced compliance issues in this regard. The utility company admitted that this incident marks the second instance in three years where they failed to adhere to their disconnection-related obligations as outlined in the code, and sector governance debates, including the Manitoba Hydro board debate, underscore how oversight remains a national focus.

In a statement to NewmarketToday, NT Power acknowledged a similar issue three years ago when they were alerted to problems with their disconnection process. They promptly made adjustments to align their in-house procedures with the requirements of the Ontario Energy Board. Unfortunately, they neglected to implement a secondary check, leading to disconnect notices being dated a few days too early.

Alex Braletic, NT Power's Vice President of Engineering and Operation, clarified that no customers were actually disconnected prematurely, and debates over paying for electricity in India illustrate how enforcement challenges differ globally, but the issued letters contained inaccuracies. He added that NT Power has since instituted additional verification procedures to prevent such errors from occurring again.

The Ontario Energy Board emphasized that NT Power has assured them that corrective measures have been taken to ensure that their staff involved in the disconnection process receive proper training and management oversight, and recent market reactions such as Hydro One shares falling after leadership changes underscore the importance of strong governance to guarantee compliance with regulatory requirements.

Brian Hewson, Vice President of Consumer Protection and Industry Performance at the Ontario Energy Board, stated, referencing earlier Ontario rate reductions for businesses that complemented consumer protections, "As a result of the actions we have taken and NT Power’s assurance that it is aware of its obligations and has taken steps to improve its processes, consumers will be better protected."

Braletic encouraged NT Power's customers who are facing difficulties paying their electricity bills to reach out to their customer service department or visit their website. He emphasized that various programs and services are available to provide relief for bills, and amid ongoing Toronto Hydro impersonation scams customers should contact NT Power directly. NT Power is committed to collaborating with customers proactively and connecting them with assistance to avoid serving them with disconnection notices.

Furthermore, NT Power plans to send a letter to the ten affected customers and provide each of them with a $100 bill credit as a goodwill gesture.

 

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China boosts wind energy, photovoltaic and concentrated solar power

China Renewable Energy Law drives growth in wind power, solar thermal, and photovoltaic capacity, supporting grid integration and five-year plans, even as China leads CO2 emissions, with policy incentives, compliance inspections, and national resource assessments.

 

Key Points

A legal framework that speeds wind, solar thermal, and PV growth in China via mandates, incentives, and grid rules.

✅ 2018 renewables: 1.87T kWh, 26.7% of national power

✅ Over 100 State Council policies enabling deployment

✅ Law inspections and regional oversight across six provinces

 

China leads renewable energies, installing more wind power, solar thermal and photovoltaic than any other country, as seen in the China solar PV growth reported in 2016, but also leads CO2 emissions, and much remains to be done.

The effective application of Chinas renewable energy law has boosted the use of renewable energy in the country and facilitated the rapid development of the sector, as solar parity across Chinese cities indicates, a report said.

The report on compliance with renewable energy law was presented today at the current bimonthly session of the Standing Committee of the National Peoples Assembly (APN).

Electricity generated by renewable energy amounted to about 1.87 trillion kilowatts per hour in 2018, representing 26.7 percent of Chinas total energy production in the year, aligning with trends where wind and solar doubling globally over five years, the report said.

Ding Zhongli, vice president of the NPC Standing Committee, presented the report to the legislators at the second plenary meeting of the session.

An inspection of the law enforcement was carried out from August to November, as U.S. renewables hit 28% record showed momentum elsewhere. A total of 21 members of the NPC Standing Committee and the NPC Environmental Protection and Resource Conservation Committee, as well as national legislators, traveled to six regions at the provincial level on inspection visits. Twelve legislative bodies at the provincial level inspected the law enforcement efforts in their jurisdictions.

The relevant State Council agencies have implemented more than 100 regulations and policies to foster a good policy environment for the development of renewable energy, as seen in markets where U.S. renewable electricity surpassed coal in 2022. Local regulations have also been formulated based on local conditions, according to the report.

In accordance with the law, a thorough investigation of the national conditions of renewable energy resources was undertaken.

In 2008 and 2014 atlas of solar energy resources and wind energy evaluation of China were issued. The relevant agencies of the State Council have also implemented five-year plans for the development of renewable energy, which have provided guidance to the sector, while countries like Ireland's one-third green power target remain in focus within four years.

The main provisions of the law have been met, the law has been effectively applied and the purpose of the legislation has been met, and this momentum is echoed abroad, with U.S. renewables near one-fourth according to projections, Ding said.

 

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Utilities see benefits in energy storage, even without mandates

Utility Battery Storage Rankings measure grid-connected capacity, not ownership, highlighting MW, MWh, and watts per customer across PJM, MISO, and California IOUs, featuring Duke Energy, IPL, ancillary services, and frequency regulation benefits.

 

Key Points

Rankings that track energy storage connected to utility grids, comparing MW, MWh, and W/customer rather than ownership.

✅ Ranks by MW, MWh, and watts per customer, not asset ownership

✅ Highlights PJM, MISO cases and California IOUs' deployments

✅ Examples: Duke Energy, IPL, IID; ancillary services, frequency response

 

The rankings do not tally how much energy storage a utility built or owns, but how much was connected to their system. So while IPL built and owns the storage facility in its territory, Duke does not own the 16 MW of storage that connected to its system in 2016. Similarly, while California’s utilities are permitted to own some energy storage assets, they do not necessarily own all the storage facilities connected to their systems.

Measured by energy (MWh), IPL ranked fourth with 20 MWh, and Duke Energy Ohio ranked eighth with 6.1 MWh.

Ranked by energy storage watts per customer, IPL and Duke actually beat the California utilities, ranking fifth and sixth with 42 W/customer and 23 W/customer, respectively.

Duke ready for next step

Given Duke’s plans, including projects in Florida that are moving ahead, the utility is likely to stay high in the rankings and be more of a driving force in development. “Battery technology has matured, and we are ready to take the next step,” Duke spokesman Randy Wheeless told Utility Dive. “We can go to regulators and say this makes economic sense.”

Duke began exploring energy storage in 2012, and until now most of its energy storage efforts were focused on commercial projects in competitive markets where it was possible to earn revenues. Those included its 36 MW Notrees battery storage project developed in partnership with the Department of Energy in 2012 that provides frequency regulation for the Electric Reliability Council of Texas market and two 2 MW storage projects at its retired W.C. Beckjord plant in New Richmond, Ohio, that sells ancillary services into the PJM Interconnection market.

On the regulated side, most of Duke’s storage projects have had “an R&D slant to them,” Wheeless said, but “we are moving beyond the R&D concept in our regulated territory and are looking at storage more as a regulated asset.”

“We have done the demos, and they have proved out,” Wheeless said. Storage may not be ready for prime time everywhere, he said, but in certain locations, especially where it can it can be used to do more than one thing, it can make sense.

Wheeless said Duke would be making “a number of energy storage announcements in the next few months in our regulated states.” He could not provide details on those projects.

More flexible resources
Location can be a determining factor when building a storage facility. For IPL, serving the wholesale market was a driving factor in the rationale to build its 20 MW, 20 MWh storage facility in Indianapolis.

IPL built the project to address a need for more flexible resources in light of “recent changes in our resource mix,” including decreasing coal-fired generation and increasing renewables and natural gas-fired generation, as other regions plan to rely on battery storage to meet rising demand, Joan Soller, IPL’s director of resource planning, told Utility Dive in an email. The storage facility is used to provide primary frequency response necessary for grid stability.

The Harding Street storage facility in May. It was the first energy storage project in the Midcontinent ISO. But the regulatory path in MISO is not as clear as it is in PJM, whereas initiatives such as Ontario storage framework are clarifying participation. In November, IPL with the Federal Energy Regulatory Commission, asking the regulator to find that MISO’s rules for energy storage are deficient and should be revised.

Soller said IPL has “no imminent plans to install energy storage in the future but will continue to monitor battery costs and capabilities as potential resources in future Integrated Resource Plans.”

California legislative and regulatory push

In California, energy storage did not have to wait for regulations to catch up with technology. With legislative and regulatory mandates, including CEC long-duration storage funding announced recently, as a push, California’s IOUs took high places in SEPA’s rankings.

Southern California Edison and San Diego Gas & Electric were first and fourth (63.2 MW and 17.2 MW), respectively, in terms of capacity. SoCal Ed and SDG&E were first and second (104 MWh and 28.4 MWh), respectively, and Pacific Gas and Electric was fifth (17 MWh) in terms of energy.

But a public power utility, the Imperial Irrigation District (IID), ended up high in the rankings – second in capacity (30 MW) and third  in energy (20 MWh) – even though as a public power entity it is not subject to the state’s energy storage mandates.

But while IID was not under state mandate, it had a compelling regulatory reason to build the storage project. It was part of a settlement reached with FERC over a September 2011 outage, IID spokeswoman Marion Champion said.

IID agreed to a $12 million fine as part of the settlement, of which $9 million was applied to physical improvements of IID’s system.

IID ended up building a 30 MW, 20 MWh lithium-ion battery storage system at its El Centro generating station. The system went into service in October 2016 and in May, IID used the system’s 44 MW combined-cycle natural gas turbine at the generating station.

Passing savings to customers
The cost of the storage system was about $31 million, and based on its experience with the El Centro project, Champion said IID plans to add to the existing batteries. “We are continuing to see real savings and are passing those savings on to our customers,” she said.

Champion said the battery system gives IID the ability to provide ancillary services without having to run its larger generation units, such as El Centro Unit 4, at its minimum output. With gas prices at $3.59 per million British thermal units, it costs about $26,880 a day to run Unit 4, she said.

IID’s territory is in southeastern California, an area with a lot of renewable resources. IID is also not part of the California ISO and acts as its own balancing authority. The battery system gives the utility greater operational flexibility, in addition to the ability to use more of the surrounding renewable resources, Champion said.

In May, IID’s board gave the utility’s staff approval to enter into contract negotiations for a 7 MW, 4 MWh expansion of its El Centro storage facility. The negotiations are ongoing, but approval could come in the next couple months, Champion said.

The heart of the issue, though, is “the ability of the battery system to lower costs for our ratepayers,” Champion said. “Our planning section will continue to utilize the battery, and we are looking forward to its expansion,” she said.” I expect it will play an even more important role as we continue to increase our percentage of renewables.”

 

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