Ontario Energy Board Sets New Electricity Rate Plan Prices and Support Program Thresholds

Solar Plus Storage is accelerating across utilities and microgrids, pairing rooftop solar with lithium-ion batteries to enhance grid resilience, reduce peak costs, prevent blackouts, and leverage tax credits amid falling prices and decarbonization goals.

Key Points

Solar Plus Storage combines solar generation with batteries to shift load, boost reliability, and cut energy costs.

✅ Cuts peak demand charges and enhances blackout resilience

✅ Falling battery and solar costs drive nationwide utility adoption

✅ Enables microgrids and grid services like frequency regulation

Todd Karin was prepared when California’s largest utility shut off power to millions of people to avoid the risk of wildfires last month. He’s got rooftop solar panels connected to a single Tesla Powerwall in his rural home near Fairfield, California. “We had backup power the whole time,” Karin says. “We ran the fridge and watched movies.”

Californians worried about an insecure energy future are increasingly looking to this kind of solution. Karin, a 31-year-old postdoctoral fellow at Lawrence Berkeley National Laboratory, spent just under $4,000 for his battery by taking advantage of tax credits. He's also saving money by discharging the battery on weekday evenings, when energy is more expensive during peak demand periods. He expects to save around $1,500 over the 10 years the battery is under warranty.

The economics don’t yet work for every household, but the green-power combo of solar panels plus batteries is popping up on a much bigger scale in some unexpected places. Owners of a rice processing plant in Arkansas are building a system to generate 26 megawatts of solar power and store another 40 MW. The plant will cut its power bill by a third, and owners say they will pass the savings to local rice growers. New York’s JFK Airport is installing solar plus storage to reduce its power load by 10 percent, while Pittsburgh International Airport is building a 20-MW solar and natural gas microgrid to keep it independent from the local utility. Officials at both airports are worried about recent power shutdowns due to weather and overload-related blackouts.

And residents of the tiny northern Missouri town of Green City (pop. 608) are getting 2.5 MW of solar plus four hours of battery storage from the state’s public utility next year. The solar power won’t go directly to townspeople, but instead will back up the town’s substation, reducing the risk of a potential shutdown. It’s part of a $68 million project to improve the reliability of remote substations far from electric generating stations.

“It’s a pretty big deal for us,” says Chad Raley, who manages technology and renewables at Ameren, a Missouri utility that is building three rural solar-plus-storage projects to better manage the flow of electricity across the local grid. “It gives us so much flexibility with renewable generation. We can’t control the sun or clouds or wind, but we can have battery storage.”

The first solar-plus-storage installations started about a decade ago on a small scale in sunny states like California, Hawaii, and Arizona. Now they’re spreading across the country, driven by falling prices of both solar panels and lithium-ion batteries the size of a shipping container imported from both China and South Korea, with wind, solar, and batteries making up most of the utility-scale pipeline nationwide. These countries have ramped up production efficiencies and lowered labor costs, leaving many US manufacturers in the dust. In fact, the price of building a comparable solar-plus-storage generating facility is now cheaper than operating a coal-fired power plant, industry officials say. In certain circumstances, the cost is equal to some natural gas plants.

“This is not just a California, New York, Massachusetts thing,” says Kelly Speakes-Backman, CEO of the Energy Storage Association, an industry group in Washington. She says more than 30 states have renewable storage on the grid. Utilities have proposed and states have approved 7 gigawatts to be installed by 2030, and most new storage will be paired with solar across the US.

Speakes-Backman estimates the unit cost of electricity produced from a solar-plus-storage system will drop 10 to 15 percent each year through 2024, supporting record growth in solar and storage investments. “If you have the option of putting out a polluting or non-polluting generating source at the same price, what are you going to pick?” says Speakes-Backman.

She notes that PJM, a large Mid-Atlantic wholesale grid operator, announced it will deploy battery storage to help smooth out fluctuating power from two wind farms it operates. “When the grid fluctuates, storage can react to it quickly and can level out the supply,” she says. In the Midwest, grid-level battery storage is also being used to absorb extra wind power. Batteries hold onto the wind and put it back onto the grid when people need it.

While the solar-plus-storage trend isn’t yet putting a huge dent in our fossil fuel use, according to Paul Denholm, an energy analyst at the National Renewable Energy Laboratory in Golden, Colorado, it is a good beginning and has the side effect of cutting air pollution. By 2021, solar and other renewable energy sources will overtake coal as a source of energy, and the US is moving toward 30% electricity from wind and solar, according to a new report by the Institute for Energy Economics and Financial Analysis, a nonprofit think tank based in Cleveland.

That’s a glimmer of hope in a somewhat dreary week of news on carbon emissions. A new United Nations report released this week finds that the planet is on track to warm by 3.9 degrees Celsius (7 Fahrenheit) by 2100 unless drastic cuts are made by phasing out gas-powered cars, eliminating new coal-fired power plants, and changing how we grow and manage land, and scientists are working to improve solar and wind power to limit climate change as well.

Energy-related greenhouse gas emissions in the US rose 2.7 percent in 2018 after several years of decline. The Trump administration has rolled back climate policies from the Obama years, including withdrawing from the Paris climate accords.

There may be hope from green power initiatives outside the Beltway, though, and from federal proposals like a tenfold increase in US solar that could remake the electricity system. Arizona plans to boost solar-plus-storage from today’s 6 MW to a whopping 850 MW by 2025, more than the entire capacity of large-scale batteries in the US today. And some folks might be cheering the closing of the West’s biggest coal-fired power plant, the 2.25-gigawatt Navajo Generating Station, in Arizona, which had spewed soot and carbon dioxide over the region for 45 years until last week. The closure might help the planet and clear the hazy smog over the Grand Canyon.

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Hedonistic Sustainability turns Copenhagen's ARC waste-to-energy plant into a public playground, blending ski slope, climbing wall, and trails with carbon-neutral heating, renewables, circular economy design, and green growth for climate action and liveability.

Key Points

A design approach fusing public recreation with clean-energy infrastructure to drive carbon-neutral, livable urban growth.

✅ Waste-to-energy plant doubles as recreation hub

✅ Supports carbon-neutral heating and renewables

✅ Stakeholder-driven, scalable urban climate model

“We call it hedonistic sustainability,” says Jacob Simonsen of the decision to put an artificial ski slope on the roof of the £485m Amager Resource Centre (Arc), Copenhagen’s cutting-edge new waste-to-energy power plant that feeds the city’s district heating network as well. “It’s not just good for the environment, it’s good for life.”

Skiing is just one of the activities that Simonsen, Arc’s chief executive, and Bjarke Ingels, its lead architect, hope will enhance the latest jewel in Copenhagen’s sustainability crown. The incinerator building also incorporates hiking and running trails, a street fitness gym and the world’s highest outdoor climbing wall, an 85-metre “natural mountain” complete with overhangs that rises the full height of the main structure.

In Copenhagen, green transformation goes hand-in-hand with job creation, a growing economy and a better quality of life

Frank Jensen, lord mayor

It’s all part of Copenhagen’s plan to be net carbon-neutral by 2025. Even now, after a summer that saw wildfires ravagethe Arctic Circle and ice sheets in Greenland suffer near-record levels of melt, the goal seems ambitious. In 2009, when the project was formulated, it was positively revolutionary.

“A green, smart, carbon-neutral city,” declared the cover of the climate action plan, aligning with a broader electric planet vision, before detailing the scale of the challenge: 100 new wind turbines; a 20% reduction in both heat and commercial electricity consumption; 75% of all journeys to be by bike, on foot, or by public transport; the biogas-ification of all organic waste; 60,000 sq metres of new solar panels; and 100% of the city’s heating requirements to be met by renewables.

Radical and far-reaching, the scheme dared to rethink the very infrastructure underpinning the city. There’s still not a climate project anywhere else in the world that comes close, even as leaders elsewhere champion a fully renewable grid by 2030.

And, so far, it’s working. CO2 emissions have been reduced by 42% since 2005, and while challenges around mobility and energy consumption remain (new technologies such as better batteries and carbon capture are being implemented, and global calls for clean electricity investment grow), the city says it is on track to achieve its ultimate goal.

More significant still is that Copenhagen has achieved this while continuing to grow in traditional economic terms. Even as some commentators insist that nothing short of a total rethink of free-market economics and corporate structures is required to stave off global catastrophe, the Danish capital’s carbon transformation has happened alongside a 25% growth in its economy over two decades. Copenhagen’s experience will be a model for other world cities as the global energy transition unfolds.

The sentiment that lies behind Arc’s conception as a multi-use public good – “hedonistic sustainability” – is echoed by Bo Asmus Kjeldgaard, former mayor of Copenhagen for the environment and the man originally tasked, back in 2010, with making the plan a reality.

“We combined life quality with sustainability and called it ‘liveability’,” says Kjeldgaard, now CEO of his own climate adaptation company, Greenovation. “We succeeded in building a good narrative around this, one that everybody could believe in.”

The idea was first floated in the late 1990s, when the newly elected Kjeldgaard had a vision of Copenhagen as the environmental capital of Europe. His enthusiasm ran into political intransigence, however, and despite some success, a lack of budget meant most of his work became “just another branding exercise – it was greenwashing”.

We’re such a rich country – change should be easy for us

Claus Nielsen, furniture maker and designer

But after stints as mayor of family and the labour market, and children and young people, he ended up back at environment in 2010 with renewed determination and, crucially, a broader mandate from the city council. “I said: ‘This time, we have to do it right,’” he recalls, “so we made detailed, concrete plans for every area, set the carbon target, and demanded the money and the manpower to make it a reality.”

He brought on board more than 200 stakeholders, from businesses to academia to citizen representatives, and helped them develop 22 specific business plans and 65 separate projects. So far the plan appears on track: there has been a 15% reduction in heat consumption, 66% of all trips in the city are now by bike, on foot or public transport, and 51% of heat and power comes from renewable electricity sources.

The onus placed on ordinary Copenhageners to walk and cycle more, pay higher taxes (especially on cars) and put up with the inconvenience of infrastructure construction has generally been met with understanding and good grace. And while some people remain critical of the fact that Copenhagen airport is not factored into the CO2 calculations – it lies beyond the city’s boundaries – and grumble about precise definitions and formulae, dissent has been rare.

This relative lack of nimbyism and carping about change can, says Frank Jensen, the city’s lord mayor, be traced to longstanding political traditions.

“Caring for the environment and taking responsibility for society in general has been an integral part of the upbringing of many Danes,” he says. “Moreover, there is a general awareness that climate change now calls for immediate, ambitious and collective action.” A 2018 survey by Concito, a thinktank, found that such action was a top priority for voters.

Jensen is keen to stress the cooperative nature of the plan and says “our visions have to be grounded in the everyday lives of people to be politically feasible”. Indeed, involving so many stakeholders, and allowing them to actively help shape both the ends and the means, has been key to the plan’s success so far and the continued goodwill it enjoys. “It’s so important to note that we [the authorities] cannot do this alone,” says Jørgen Abildgaard, Copenhagen’s executive climate programme director.

Many businesses around the world have typically been reluctant to embrace sustainability when a dip in profits or inconvenience might be the result, but not in Copenhagen. Martin Manthorpe, director of strategy, business development and public affairs at NCC, one of Scandinavia’s largest construction and industrial groups, was brought in early on by Abildgaard to represent industry on the municipality’s climate panel, and to facilitate discussions with the wider business community. He thinks there are several reasons why.

“The Danes have a trading mindset, meaning ‘What will I have to sell tomorrow?’ is just as important as ‘What am I producing today?’” he says. “Also, many big Danish companies are still ultimately family-owned, so the culture leans more towards long-term thinking.”

It is, he says, natural for business to be concerned with issues around sustainability and be willing to endure short-term pain: “To do responsible, long-term business, you need to see yourself as part of the larger puzzle that is called ‘society’.”

Furthermore, in Denmark climate change denial is given extremely short shrift. “We believe in the science,” says Anders Haugaard, a local entrepreneur. “Why wouldn’t you? We’re told sustainability brings only benefits and we’ve got no reason to be suspicious.”

“No one would dare argue against the environment,” says his friend Claus Nielsen, a furniture maker and designer. “We’re such a rich country – change should be easy for us.” Nielsen talks about how enlightened his kids are – “my 11-year-old daughter is now a flexitarian ” – and says that nowadays he mainly buys organic; Haugaard doesn’t see a problem with getting rid of petrol cars (the whole country is aiming to be fossil fuel-free by 2050 as the EU electricity use by 2050 is expected to double).

Above all, there’s a belief that sustainability need not make the city poorer: that innovation and “green growth” can be lucrative in and of themselves. “In Copenhagen, green transformation goes hand-in-hand with job creation, a growing economy and a better quality of life,” says Jensen. “We have also shown that it’s possible to combine this transition with economic growth and market opportunities for businesses, and I think that other countries can learn from our example.”

Besides, as Jensen notes, there is little alternative, and even less time: “National states have failed to take enough responsibility, but cities have the power and will to create concrete solutions. We need to start accelerating their implementation – we need to act now.”

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Solar ITC Impact on U.S. Wind frames how a 30% solar investment tax credit could undercut wind PTC economics, shift corporate procurement, and, without transmission and storage, slow onshore builds despite offshore wind momentum.

Key Points

It is how a solar ITC extension may curb U.S. wind growth absent PTC parity, transmission, storage, and offshore backing.

✅ ITC at 30% risks shifting corporate procurement to solar.

✅ Post-PTC wind faces grid, transmission, and curtailment headwinds.

✅ Offshore wind, storage pairing, TOU demand could offset.

The booming U.S. wind industry, amid a wind power surge, faces an uncertain future in the 2020s. Few factors are more important than the fate of the solar ITC.

An extension of the solar investment tax credit (ITC) at its 30 percent value would be “devastating” to the future U.S. wind market, according to a new Wood Mackenzie report.

The U.S. is on track to add a record 14.6 gigawatts of new wind capacity in 2020, despite Covid-19 impacts, and nearly 39 gigawatts during a three-year installation boom from 2019 to 2021, according to Wood Mackenzie’s 2019 North America Wind Power Outlook.

But the market’s trajectory begins to look highly uncertain from the early 2020s onward, and solar is one of the main reasons why.

Since the dawn of the modern American renewables market, the wind and solar sectors have largely been allies on the national stage, benefiting from many of the same favorable government plans and sharing big-picture goals. Until recently, wind and solar companies rarely found themselves in direct competition.

But the picture is changing as solar catches up to wind on cost and the grid penetration of renewables surges. What was once a vague alliance between the two fastest growing renewables technologies could morph into a serious rivalry.

While many project developers are now active in both sectors, including NextEra Energy Resources, Invenergy and EDF, the country’s thriving base of wind manufacturers could face tougher days ahead.

The ITC's inherent advantage

At this point, wind remains solar’s bigger sibling in many ways.

The U.S. has nearly 100 gigawatts of installed wind capacity today, compared to around 67 gigawatts of solar. With their substantially higher capacity factors, wind farms generated four times more power for the U.S. grid last year than utility-scale solar plants, for a combined wind-solar share of 8.2 percent, according to government figures, even as renewables are projected to reach one-fourth of U.S. electricity generation. (Distributed PV systems further add to solar’s contribution.)

But it's long been clear that wind would lose its edge at some point. The annual solar market now regularly tops wind. The cost of solar energy is falling more rapidly, and appears to have more runway for further reduction. Solar’s inherent generation pattern is more valuable in many markets, delivering power during peak-demand hours, while the wind often blows strongest at night.

And then there’s the matter of the solar ITC.

In 2015, both wind and solar secured historic multi-year extensions to their main federal subsidies. The extensions gave both industries the longest period of policy clarity they’ve ever enjoyed, setting in motion a tidal wave of installations set to crest over the next few years.

Even back in 2015, however, it was clear that solar got the better deal in Washington, D.C.

While the wind production tax credit (PTC) began phasing down for new projects almost immediately, solar developers were given until the end of 2019 to qualify projects for the full ITC.

And critically, while the wind PTC drops to nothing after its sunset, commercially owned solar projects will remain eligible for a 10 percent ITC forever, based on the existing legislation. Over time, that amounts to a huge advantage for solar.

In another twist, the solar industry is now openly fighting for an extension of the 30 percent ITC, while the wind industry seemingly remains cooler on the prospect of pushing for a similar prolongation — having said the current PTC extension would be the last.

Plenty of tailwinds, too

Wood Mackenzie's report catalogues multiple factors that could work for or against the wind market in the "uncharted" post-PTC years, many of them, including the Covid-19 crisis, beyond the industry’s direct control.

If things go well, annual installations could bounce back to near-record levels by 2027 after a mid-decade contraction, the report says. But if they go badly, installations could remain depressed at 4 gigawatts or below from 2022 through most of the coming decade, and that includes an anticipated uplift from the offshore market.

An extension of the solar ITC without additional wind support would “severely compound” the wind market’s struggle to rebound in the 2020s, the report says. The already-evident shift in corporate renewables procurement from wind to solar could intensify dramatically.

The other big challenge for wind in the 2020s is the lack of progress on transmission infrastructure that would connect potentially massive low-cost wind farms in interior states with bigger population centers. A hoped-for national infrastructure package that might address the issue has not materialized.

Even so, many in the wind business remain cautiously optimistic about the post-PTC years, with a wind jobs forecast bolstering sentiment, and developers continue to build out longer-term project pipelines.

Turbine technology continues to improve. And an extension of the solar ITC is far from assured.

Other factors that could work in wind’s favor in the years ahead include:

The nascent offshore sector, which despite lingering regulatory uncertainty at the federal level looks set to blossom into a multi-gigawatt annual market by the mid-2020s, in line with an offshore wind forecast that highlights substantial growth potential. Lobbying efforts for an offshore wind ITC extension are gearing up, offering a potential area for cooperation between wind and solar.

The potential linkage of policy support for energy storage to wind projects, building on the current linkage with solar.

Growing electric vehicle sales and a shift toward time-of-use retail electricity billing, which could boost power demand during off-peak hours when wind generation is strong.

The land-use advantages wind farms have over solar in some agricultural regions.

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Hydro One Rate Hike reflects Ontario Energy Board approval for higher delivery charges, impacting seasonal customers more than residential classes, funding infrastructure upgrades like wood pole and transformer replacements across Ontario's medium-density service areas.

Key Points

The Hydro One rate hike is an OEB-approved delivery charge increase to fund upgrades, with impacts on seasonal users.

✅ OEB-approved delivery rate increases retroactive to 2018

✅ Seasonal customers see larger monthly bill impacts than residential

✅ Funds pole, transformer replacements and tree trimming work

Hydro One seasonal customers will face bigger increases in their bills than the utility's residential customers as a result of an Ontario Energy Board approval of a rate hike, a topic drawing attention from a utilities watchdog in other provinces as well.

Hydro One received permission to increase its delivery charge, as large projects like the Meaford hydro generation proposal are considered across Ontario, retroactive to last year.

It says it needs the money to maintain and upgrade its infrastructure, including efforts to adapt to climate change, much of which was installed in the 1950s.

The utility is notifying customers that new statements reflect higher delivery rates which were not charged in 2018 and the first half of this year, due to delay in receiving the OEB's permission, similar to delays that can follow an energy board recommendation in other jurisdictions.

The amount that customers' bills will increase by depends not only on how much electricity they use, but also on which rate class they belong to, as well as policy decisions affecting remote connections such as the First Nations electricity line in northern Ontario.

For seasonal customers such as summer cottage owners, the impact on a typical user's bill will be 2.9 per cent more per month for 2018, and 1.7 per cent per month for 2019.

There will be further increases of 1.0 per cent, 1.4 per cent and 1.1 per cent per month in 2020, 2021 and 2022 respectively. 

Typical residential customers will experience smaller increases or rate freezes over the same period.

In the residential medium density class, the rate changes are a 2.0 per cent increase for last year, a decrease of 0.5 per cent this year, and an increase of 0.5 per cent in 2021. There will be no increases in 2020 and 2022.

Seasonal Rate Class — Estimated bill impact per month

2018 - 2.9 %

2019 - 1.7%

2020 - 1.0%

2021 - 1.4%

2022 - 1.1%

Residential Medium Density Rate Class — Estimated bill impact per month

2018 - 2.0%

2019 - -0.5% decrease

2020 - 0.0%

2021 - 0.5%

2022 - 0.0%

A Hydro One spokesperson told tbnewswatch.com that over the next three years, the utility's upgrading plan includes reliability investments such as replacing more than 24,000 wood poles across the province as well as numerous transformers.

In the Thunder Bay area, the spokesperson said, some of the revenue generated by the higher delivery rates will cover the cost of replacing more than 180 poles and trimming hazardous trees around 3,200 kilometres of overhead power lines while sharing electrical safety tips with customers.

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Labor National Electricity Market Reform aims to rebalance NEM rules, support a fair-dinkum clean energy target, enable renewable zones, bolster storage and grid reliability, empower households, and unlock CEFC investment via the Finkel review.

Key Points

Labor's plan to overhaul NEM rules for households, clean energy targets, renewable zones, storage, and CEFC investment.

✅ Revises NEM rules to curb big generators' market power

✅ Backs a clean energy target informed by the Finkel review

✅ Expands renewable zones, storage, and CEFC finance

Australia's Labor leader Bill Shorten has called for significant changes to the rules governing the national electricity market, saying they are biased in favour of big energy generators, leaving households worse off even with measures like a WA electricity bill credit in place.

He said the national electricity market (NEM) rules are designed to help the big companies recoup the money they spent on purchasing government assets, a dynamic echoed in debates like a Calgary market overhaul dispute unfolding in Canada, rather than encourage households to generate their own power, and they need to change faster to adapt to consumer needs.

His comments hint at a possible overhaul of the NEM’s governance structure under a future Labor government, because the current rule-making process is too cumbersome and slow, with suggested rules changes taking years to be introduced.

Daniel Andrews defends claims that civil liberties a 'luxury' in fight against terrorism

Labor had promoted a similar idea in the lead-up to the 2016 election, with its call for an electricity modernization review, but now the Finkel review has been released it would be used to guide such a review.

In a speech to the Australian Financial Review’s National Energy Summit in Sydney on Monday, Shorten recommitted Labor to negotiating a “fair-dinkum” clean energy target with the Turnbull government, amid modelling that a strong clean energy target can lower electricity prices, saying “it’s time to put away the weapons of the climate change wars” and work together to find a way forward.

He said the media and business can all share the blame for Australia’s lost decade of energy policy development, with examples abroad showing how leadership steers change, such as in Alberta where Kenney's influence on power policy has been pronounced, but “we need to stop spoiling for a fight and start seeking a solution”.

“The scare campaigns and hyper-partisanship that got Australia into this mess, will not get us out of it,” he will say.

“That’s why, a bit over four months ago, before the chief scientist released his report, I wrote to the prime minister offering an olive branch.

“I said Labor was prepared to move from our preferred position of an emissions intensity scheme and negotiate a fair-dinkum clean energy target.

“That offer was greeted with some cynicism in the media. But let me be crystal clear – I made that offer in good faith, and that offer still stands.”

Shorten said Australia needs to resolve the current “gas crisis” and do more to drive investment in renewable energy that delivers more reliable electricity, a priority underscored by the IEA's warning that falling global energy investment risks shortages, and if Labor wins the next election it will organise Australia into a series of renewable energy zones – as recommended by the chief scientist, Alan Finkel – that identify wind, solar, pumped hydro and geothermal resources, and connect them to the existing network.

“These zones would be based on both existing generation and storage in the area – and the potential for future development,” he said.

Australia's politics only barrier to clean energy system, report finds

“Identifying these zones – from eastern Queensland, north-east New South Wales, west Victoria, the Eyre Peninsula in South Australia and the entire state of Tasmania – will also plant a flag for investors – signalling future sites for job-creating projects.”

Shorten also said Labor will free up the Clean Energy Finance Corporation to invest in more generation and more storage.

“Under Labor, the return benchmark for the CEFC was set at the weighted average of the Australian government bond rate.

“Under this government, it was initially increased to the weighted average plus 4% to 5% and is now set at the average plus 3% to 4%.

“Setting the return benchmark too high defeats the driving purpose of the CEFC and it holds back the crucial investment Australia needs – right now – in new generation and storage.

“This is why a Labor government would restore the original benchmark return of the Clean Energy Finance Corporation, to invest in more generation, more storage and more jobs.”

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Spring Storm Grid Risks highlight tornado outbreaks, flooding, power outages, and transmission disruptions, with NOAA flood outlooks, coal and barge delays, vulnerable nuclear sites, and distribution line damage demanding resilience, reliability, and emergency preparedness.

Key Points

Spring Storm Grid Risks show how tornadoes and floods disrupt power systems, fuel transport, and plants guide resilience.

✅ Tornado outbreaks and derechos damage distribution and transmission

✅ Flooding drives outages via treefall, substation and plant inundation

✅ Fuel logistics disrupted: rail coal, river barges, road access

The storm and tornado outbreak that recently barreled through the US Midwest, South and Mid-Atlantic was a devastating reminder of how much danger spring can deliver, despite it being the “milder” season compared to summer and winter.  

Danger season is approaching, and the country is starting to see the impacts. 

The event killed at least 32 people across seven states. The National Weather Service is still tallying up the number of confirmed tornadoes, which has already passed 100. Communities coping with tragedy are assessing the damage, which so far includes at least 72 destroyed homes in one Tennessee county alone, and dozens more homes elsewhere. 

On Saturday, April 1–the day after the storm struck–there were 1.1 million US utility customers without power, even as EIA reported a January power generation surge earlier in the year. On Monday morning, April 3, there were still more than 80,000 customers in the dark, according to PowerOutage.us. The storm system brought disruptions to both distribution grids–those networks of local power lines you generally see running overhead to buildings–as well as the larger transmission grid in the Midwest, which is far less common than distribution-level issues. 

While we don’t yet have a lot of granular details about this latest storm’s grid impacts, recent shifts in demand like New York City's pandemic power patterns show how operating conditions evolve, and it’s worth going through what else the country might be in for this spring, as well as in future springs. Moreover, there are steps policymakers can take to prepare for these spring weather phenomena and bolster the reliability and resilience of the US power system. 

Heightened flood risk 
The National Oceanic Atmospheric Administration (NOAA) said in a recent outlook that about 44 percent of the United States is at risk of floods this spring, equating to about 146 million people. This includes most of the eastern half of the country, the federal agency said. 

The agency also sees “major” flood risk potential in some parts of the Upper Mississippi River Basin, and relatively higher risk in the Sierra Nevada region, due in part to a historic snowpack in California.  

Multiple components of the power system can be affected by spring floods. 

Power lines – Floods can saturate soil and make trees more likely to uproot and fall onto power lines. This has been contributing to power outages during California’s recent heavy storms–called atmospheric rivers–that started over the winter. In other regions, soil moisture has even been used as a predictor of where power outages will occur due to hurricanes, so that utility companies are better prepared to send line repair crews to the right areas. Hurricanes are primarily a summer and fall phenomenon, and summer also brings grid stress from air conditioning demand in many states, so for now, during spring, they are less of a concern.  

Fuel transport – Spring floods can hinder the transportation of fuels like coal. While it is a heavily polluting fossil fuel that is set to continue declining as a fuel source for US electricity generation, with the EIA summer outlook for wind and solar pointing to further shifts, coal still accounted for roughly 20 percent of the country’s generation in 2022.   

About 70 percent of US coal is transported at least part of the way by trains. The rail infrastructure to transport coal from the Powder River Basin in Montana and Wyoming–the country’s primary coal source–was proven to be vulnerable to extreme floods in the spring of 2011, and even more extreme floods in the spring of 2019. The 2019 floods’ disruptions of coal shipments to power plants via rail persisted for months and into the summertime, also affecting river shipments of coal by barge. In June 2019, hundreds of barges were stalled in the Mississippi River, through which millions of tons of the fossil fuel are normally transported. 

Power plants – Power plants themselves can also be at risk of flooding, since most of them are sited near a source of water that is used to create steam to spin the plants’ turbines, and conversely, low water levels can constrain hydropower as seen in Western Canada hydropower drought during recent reservoir shortfalls. Most US fossil fuel generating capacity from sources like methane gas, which recently set natural gas power records across the grid, and coal utilizes steam to generate electricity. 

However, much of the attention paid to the flood risk of power plant sites has centered on nuclear plants, a key source of low-carbon electricity discussed in IAEA low-carbon electricity lessons that also require a water source for the creation of steam, as well as for keeping the plant cool in an emergency. To name a notable flood example here in the United States–both visually and substantively–in 2011, the Fort Calhoun nuclear plant in Nebraska was completely surrounded by water due to late-spring flooding along the Missouri River. This sparked a lot of concerns because it was just a few months after the March 2011 meltdown of the Fukushima Daiichi nuclear plant in Japan. The public was thankfully not harmed by the Nebraska incident, but this was unfortunately not an isolated incident in terms of flood risks posed to the US nuclear power fleet. 

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