California-Mexico border technology park gets green boost

Texas Power Grid Reliability faces ERCOT blackouts and winter storm risks; solutions span weatherization, natural gas coordination, PUC-ERCOT reform, capacity market signals, demand response, grid batteries, and geothermal to maintain resilient electricity supply.

Key Points

Texas Power Grid Reliability is ERCOT's ability to keep electricity flowing during extreme weather and demand spikes.

✅ Weatherize power plants and gas supply to prevent freeze-offs

✅ Merge PUC and Railroad Commission for end-to-end oversight

✅ Pay for firm capacity, demand response, and grid storage

The blackouts in February shined a light on the fragile infrastructure that supports modern life. More and more, every task in life requires electricity, and no one is in charge of making sure Texans have enough.

Of the 4.5 million Texans who lost power last winter, many of them also lost heat and at least 100 froze to death. Wi-Fi stopped working and phones soon lost their charges, making it harder for people to get help, find someplace warm to go or to check in on loved ones.

In some places pipes froze, and people couldn’t get water to drink or flush after power and water failures disrupted systems, and low water pressure left some health care facilities unable to properly care for patients. Many folks looking for gasoline were out of luck; pumps run on electricity.

But rather than scouting for ways to use less electricity, we keep plugging in more things. Automatic faucets and toilets, security systems and locks. Now we want to plug in our cars, so that if the grid goes down, we have to hope our Teslas have enough juice to get to Oklahoma.

The February freeze illuminated two problems with electricity sufficiency. First, power plants had mechanical failures, triggering outages for days. But also, Texans demanded a lot more electricity than usual as heaters kicked on because of the cold. The ugly truth is, the Texas power grid probably couldn’t have generated enough electricity to meet demand, even if the plants kept whirring. And that is what should chill us now.

The stories of the people who died because the electricity went out during the freeze are difficult to read. A paletero and cotton-candy vendor well known in Old East Dallas, Leobardo Torres Sánchez, was found dead in his armchair, bundled in quilts beside two heaters that had no power.

Arnulfo Escalante Lopez, 41, and Jose Anguiano Torres, 28, died from carbon monoxide poisoning after using a gas-powered generator to heat their apartment in Garland.

Pramod Bhattarai, 23, a college student from Nepal, died from carbon monoxide after using a charcoal grill to heat his home in Houston, according to news reports. And Loan Le, 75; Olivia Nguyen, 11; Edison Nguyen, 8; and Colette Nguyen, 5, died in Sugar Land after losing control of a fire they started in the fireplace to keep warm.

A 65-year-old San Antonio man with esophageal cancer died after power outages cut off supply from his oxygen machine. And local Abilene media reported that a man died in a local hospital when a loss of water pressure prevented staff from treating him.

Gloria Jones of Hillsboro, 87, was living by herself, healthy and social. According to the Houston Chronicle, as the cold weather descended, she told her friends and family she was fine. But when her children checked on her after she didn’t answer her phone, they found her on the floor beside her bed. Hospital workers tried to warm her, but they soon pronounced her dead.

Officials said in July that 210 people died because of the freezing weather, including those who died in car crashes and other weather-related causes, but that figure will be updated. The Department of State Health Services said most of those deaths were due to hypothermia.

Policy recommendation: Weatherize power plants and fuel suppliers

Texas could have avoided those deaths if power plants had worked properly. It’s mechanically possible to generate electricity in freezing temperatures; the Swedes and Finns have electricity in winter. But preparing equipment for the winter costs money, and now that the Public Utility Commission set new requirements for plant owners to weatherize equipment, we expect better reliability.

The PUC officials certainly expect better performance. Chairman Peter Lake earlier this month promised: “We go into this winter knowing that because of all these efforts the lights will stay on.”

Yet, there’s no matching requirement to weatherize key fuel supplies for natural gas-fired power plants. While the PUC and the Electric Reliability Council of Texas were busy this year coming up with standards and enforcement processes, the Texas Railroad Commission, which regulates oil and gas production, was not.

The Railroad Commission is working to ensure that natural gas producers who supply power plants have filed the proper paperwork so that they do not lose electricity in a blackout, rendering them unable to provide vital fuel. But weatherization regulations will not happen for some months, not in time for this winter.

Policy recommendation: Combine the state’s Public Utility Commission and Railroad Commission into one energy agency

Electricity and natural gas regulators came to realize the importance of natural gas suppliers communicating their electricity needs with the PUC to avoid getting cut off when the fuel is needed the most. Not last year; they realized this ten years ago, when the same thing happened and triggered a day of rolling outages.

Why did it take a decade for the companies regulated by one agency to get their paperwork in order with a separate agency? It makes more sense for a single agency to regulate the entire energy process, from wellhead to lightbulb. (Or well-to-wheel, as cars increasingly need electricity, too.)

Over the years, various legislative sunset commissions have recommended combining the agencies, with different governance suggestions, none of which passed the Legislature. We urge lawmakers in 2023 to take up the idea in earnest, hammer out the governance details, and make sure the resulting agency has the heft and resources to regulate energy in a way that keeps the industry healthy and holds it accountable.

Policy recommendation: Incentivize building more power plants

Regardless, if energy companies in February had operated their equipment exactly right, the lights likely would have still gone out. Perhaps for a shorter period, perhaps in a more shared way, allowing people to keep homes above freezing and phones charged between rolling blackouts. But Texas was heading for trouble.

Before the winter freeze, ERCOT anticipated Texas would have 74,000 MW of power generation capacity for the winter of 2021. That’s less than the usual summer fleet as some plants go down for maintenance in the winter, but sufficient to meet their wildest predictions of winter electricity demand. The power generation on hand for the winter would have met the historic record winter demand, at 65,918 MW. Even in ERCOT’s planning scenario with extreme generator failures, the grid had enough capacity.

But during the second week of February, as weather forecasts became more dire, grid operators began rapidly hiking their estimates of electricity demand. On Valentine’s Day, ERCOT estimated demand would rise to 75,573 MW in the coming week.

Clearly that is more demand than all of Texas’ winter power generation fleet of 74,000 MW could handle. Demand never reached that level because ERCOT turned off service to millions of customers when power plants failed.

This raises questions about whether the Texas grid has enough power plants to remain resilient as climate change brings more frequent bouts of extreme weather and blackout risks across the U.S. Or if we have enough power to grow, as more people and companies, more homes and businesses and manufacturing plants, move to Texas.

What a shame if the Texas Miracle, our robust and growing economy, died because we ran out of electricity.

This is no exaggeration. In November, ERCOT released its seasonal assessment of whether Texas will have enough electricity resources for the coming winter. If weather is normal, yes, Texas will be in good shape. But if extreme weather again pushes Texas to use an inordinate amount of electricity for heat, and if wind and solar output are low, there won’t be enough. In that scenario, even if power plants mostly continue to operate properly, we should brace for outages.

Further, there are few investors planning to build more power plants in Texas, other than solar and wind. Renewable plants have many good qualities, but reliability isn’t one of them. Some investors are building grid-scale batteries, a technology that promises to add reliability to the grid.

How come power plant developers aren’t building more generators, especially with flat electricity demand in many markets today?

Policy recommendation: Incentivize reliability

The Texas electrical grid, independent of the rest of the U.S., operates as a competitive market. No regulator plans a power plant; investors choose to build plants based on expectations of profit.

How it works is, power generators offer their electricity into the market at the price of their choosing. ERCOT accepts the lowest bids first, working up to higher bids as demand for power increases in the course of a day.

The idea is that Texans always get the lowest possible price, and if prices rise high, investors will build more power plants. Basic supply and demand. When the market was first set up, this worked pretty well, because the big, reliable baseload generators, the coal and nuclear industries, were the cheapest to operate and bid their power at prices that kept them online all the time. The more agile natural gas-fired plants ramped up and down to meet demand minute-by-minute, at higher prices.

Renewable energy disrupts the market in ways that are great, generating cheap, clean power that has forced some high-polluting coal plants to mothball. But the disruption also undermines reliability. Wind and solar plants are the cheapest and quickest power generation to build and they have the lowest operating cost, allowing them to bid very low prices into the power market. Wind tends to blow hardest in West Texas at night, so the abundance of wind turbines has pushed many of those old baseload plants out of the market.

That’s how markets work, and we’re not crying for coal plant operators. But ERCOT has to figure out how to operate the market differently to keep the lights on.

The PUC announced a slew of electricity market reforms last week to address this very problem, including new to market pricing and an emergency reliability service for ERCOT to contract for more back-up power. These changes cost money, but failing to make any changes could cost more lives.

Texas became the No. 1 wind state thanks in part to a smart renewable energy credit system that created financial incentives to erect wind turbines. But those credits mean that sometimes at night, wind generators bid electricity into the market at negative prices, because they will make money off of the renewable energy credits.

It’s time for the Legislature to review the credit program to determine if it’s still needed, of a similar program could be added to incentivize reliability. The market-based program worked better than anyone could have expected to produce clean energy. Why not use this approach to create what we need now: clean and reliable energy?

We were pleased that PUC commissioners discussed last week an idea that would create a market for reliable power generation capacity by adding requirements that power market participants meet a standard of reliability guarantees.

A market for reliable electricity capacity will cost more, and we hope regulators keep the requirements as modest as possible. Renewable requirements were modest, but turned out to be powerful in a competitive market.

We expect a reliability program to be flexible enough that entrepreneurs can participate with new technology, such as batteries or geothermal energy or something that hasn’t been invented yet, rather than just old reliable fossil fuels.

We also welcome the PUC’s review of pricing rules for the market. Commissioners intend for a new pricing formula to offer early price signals of pending scarcity, to allow time for industrial customers to reduce consumption or suppliers to ramp up. This is intriguing, but we hope the final implementation keeps market interventions at a minimum.

We witnessed in February a scenario in which extremely high prices on the power market did nothing to attract more electricity into the market. Power plants broke down; there was no way to generate more power, no matter how high market prices went. So the PUC was silly to intervene in the market and keep prices artificially high; the outcome was billions of dollars of debt and a proposed electricity market bailout that electricity customers will end up paying.

Nor did this PUC pricing intervention prompt power generation developers to say: “I tell you what, let’s build more plants in Texas.” In the next few years, ERCOT can expect more solar power generation to come online, but little else.

Natural gas plant operators have told the PUC that market price signals show that a new plant wouldn’t be profitable. Natural gas plants are cheaper and faster to build than nuclear reactors; if those developers cannot figure out how to make money, then the prospect of a new nuclear reactor in Texas is a fantasy, even setting aside the environmental and political opposition.

Policy proposal: Use less energy

Politicians like to imagine that technology will solve our energy problem. But the quickest, cheapest, cleanest solution to all of our energy problems is to use less. Investing some federal infrastructure money to make homes more energy efficient would cut energy use, and could help homes retain heat in an emergency.

The PUC’s plan to offer more incentives for major power users to reduce demand in a grid emergency is a good idea. Bravo – next let’s take this benefit to the masses.

Upgrading building codes to require efficiency for office buildings and apartments can help, and might have prevented the frozen pipes in so many multifamily housing units that left people without water.

When North Texas power-line utility Oncor invested in smart grid technology in past decades, part of the promise was to help users reduce demand when electricity prices rise or in emergencies. A review and upgrade of the smart technology could allow more customers to benefit from discounts in exchange for turning things off when electricity supply is tight.

Problem is, we seem to be going in the opposite direction as consumers. Forget turning off the TV and unplugging the coffee machine as we leave the house each morning; now everything is always-on and always connected to Wi-Fi. Our appliances, electronics and the services that operate them can text us when anything interesting happens, like the laundry finishes or somebody opens the patio door or the first season of Murder She Wrote is available for streaming.

As Texans plug in electric vehicles, we will need even more power generation capacity. Researchers at the University of Texas at Austin estimated that if every Texan switched to an electric vehicle, demand for electricity would rise about 30%.

Texans will need to think realistically and rationally about where that electricity is going to come from. Before we march toward a utopian vision of an all-electric world, we need to make sure we have enough electricity.

Getting this right is a matter of life and death for each of one us and for Texas.

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Quinone-mediated fuel cell uses a bio-inspired organic shuttle to carry electrons and protons to a nearby cobalt catalyst, improving hydrogen conversion, cutting platinum dependence, and raising efficiency while lowering costs for clean electricity.

Key Points

An affordable, bio-inspired fuel cell using an organic quinone shuttle and cobalt catalyst to move electrons efficiently

✅ Organic quinone shuttles electrons to a separate cobalt catalyst

✅ Reduces platinum use, lowering cost of hydrogen power

✅ Bio-inspired design aims to boost efficiency and durability

Fuel cells have long been viewed as a promising power source. But most fuel cells are too expensive, inefficient, or both. In a new approach, inspired by biology, a team has designed a fuel cell using cheaper materials and an organic compound that shuttles electrons and protons.

Fuel cells have long been viewed as a promising power source. These devices, invented in the 1830s, generate electricity directly from chemicals, such as hydrogen and oxygen, and produce only water vapor as emissions. But most fuel cells are too expensive, inefficient, or both.

In a new approach, inspired by biology and published today (Oct. 3, 2018) in the journal Joule, a University of Wisconsin-Madison team has designed a fuel cell using cheaper materials and an organic compound that shuttles electrons and protons.

In a traditional fuel cell, the electrons and protons from hydrogen are transported from one electrode to another, where they combine with oxygen to produce water. This process converts chemical energy into electricity. To generate a meaningful amount of charge in a short enough amount of time, a catalyst is needed to accelerate the reactions.

Right now, the best catalyst on the market is platinum -- but it comes with a high price tag, and while advances like low-cost heat-to-electric materials show promise, they address different conversion pathways. This makes fuel cells expensive and is one reason why there are only a few thousand vehicles running on hydrogen fuel currently on U.S. roads.

Shannon Stahl, the UW-Madison professor of chemistry who led the study in collaboration with Thatcher Root, a professor of chemical and biological engineering, says less expensive metals can be used as catalysts in current fuel cells, but only if used in large quantities. "The problem is, when you attach too much of a catalyst to an electrode, the material becomes less effective," he says, "leading to a loss of energy efficiency."

The team's solution was to pack a lower-cost metal, cobalt, into a reactor nearby, where the larger quantity of material doesn't interfere with its performance. The team then devised a strategy to shuttle electrons and protons back and forth from this reactor to the fuel cell.

The right vehicle for this transport proved to be an organic compound, called a quinone, that can carry two electrons and protons at a time. In the team's design, a quinone picks up these particles at the fuel cell electrode, transports them to the nearby reactor filled with an inexpensive cobalt catalyst, and then returns to the fuel cell to pick up more "passengers."

Many quinones degrade into a tar-like substance after only a few round trips. Stahl's lab, however, designed an ultra-stable quinone derivative. By modifying its structure, the team drastically slowed down the deterioration of the quinone. In fact, the compounds they assembled last up to 5,000 hours -- a more than 100-fold increase in lifetime compared to previous quinone structures.

"While it isn't the final solution, our concept introduces a new approach to address the problems in this field," says Stahl. He notes that the energy output of his new design produces about 20 percent of what is possible in hydrogen fuel cells currently on the market. On the other hand, the system is about 100 times more effective than biofuel cells that use related organic shuttles.

The next step for Stahl and his team is to bump up the performance of the quinone mediators, allowing them to shuttle electrons more effectively and produce more power. This advance would allow their design to match the performance of conventional fuel cells, but with a lower price tag.

"The ultimate goal for this project is to give industry carbon-free options for creating electricity, including thermoelectric materials that harvest waste heat," says Colin Anson, a postdoctoral researcher in the Stahl lab and publication co-author. "The objective is to find out what industry needs and create a fuel cell that fills that hole."

This step in the development of a cheaper alternative could eventually be a boon for companies like Amazon and Home Depot that already use hydrogen fuel cells to drive forklifts in their warehouses.

"In spite of major obstacles, the hydrogen economy, with efforts such as storing electricity in pipelines in Europe, seems to be growing," adds Stahl, "one step at a time."

Financial support for this project was provided by the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, and by the Wisconsin Alumni Research Foundation (WARF) through the WARF Accelerator Program.

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DOE Office of Fossil Energy safeguards energy security via the Strategic Petroleum Reserve, domestic critical minerals from coal byproducts, and carbon capture to curb CO2, strengthening resiliency amid shocks and supporting U.S. manufacturing and defense.

Key Points

A DOE program advancing energy security through SPR stewardship, critical minerals R&D, and carbon capture.

✅ Manages the Strategic Petroleum Reserve for emergency crude supply

✅ Develops domestic critical minerals from coal and mining byproducts

✅ Deploys carbon capture, utilization, and storage to cut CO2

The global economy has just experienced a period of unique transformation because of COVID-19. The fact that remains constant in this new economic landscape is that our society relies on energy; it’s an integral part of our day-to-day lives, even as U.S. energy use has evolved over time. According to the U.S. Energy Information Administration, approximately 80 percent of energy consumption in the United States comes from fossil fuels, so having access to a secure and reliable supply of those energy resources is more important than ever for national energy security considerations today. Below are three examples that highlight how our work at the U.S. Department of Energy’s Office of Fossil Energy (FE) helps ensure the Nation’s energy security and resiliency.

(1) Open crude oil reserves to respond to crises

FE has overall program responsibility for carrying out the mission of the Strategic Petroleum Reserve (SPR), the world’s largest supply of emergency crude oil. These federally-owned stocks are stored in massive underground salt caverns along the coastline of the Gulf of Mexico. The SPR is a powerful tool U.S. leaders use to respond to a wide range of crises, including energy crisis impacts on electricity and fuels, involving crude oil disruption or demand loss.  When the COVID-19 pandemic hit, the oil markets crashed and crude oil demand dropped drastically across the world. U.S. oil producers turned to the SPR to store their oil while broader energy dominance constraints were becoming evident in practice. This helped alleviate the pressure on producers to shut in oil production and proved to be a critical asset for American energy and national security.

(2) Use the Nation’s abundant coal reserves to produce valuable materials

Critical materials, including rare earth elements, are a group of chemical elements and materials with unique properties that support manufacturing of most modern technologies. They are essential components for critical defense and homeland security applications, green energy technologies, hybrid and electric vehicles, and high-value electronics. While these materials are not rare, they are hard to separate and expensive to extract. The United States relies heavily on imports from China. To reduce U.S. dependence on foreign sources, FE has a research and development program aimed at producing a domestic supply of critical materials from the Nation’s abundant coal resources and associated byproducts from legacy and current mining operations. Many of the technologies being developed can also be used to separate critical minerals from other mining materials and byproducts. Tapping into these resources has the potential to create new industries and revitalize coal communities and the workforce in coal-producing regions.

(3) Decrease carbon emissions for a cleaner energy future

FE is committed to balancing the Nation’s energy use with the need to protect the environment, and has a comprehensive portfolio of technological solutions that help keep carbon dioxide (CO2) emissions out of the atmosphere. For example, amid high natural gas prices that reinforce the case for clean electricity, the Department has been investing in carbon capture, utilization, and storage technologies for over a decade. These technologies capture CO2 emissions from various sources, including coal-fired power plants and manufacturing plants, before they enter the atmosphere. Several of these cutting-edge technologies have been deployed at major demonstration sites, supported by clean energy funding that aims to benefit millions. Three of these projects—Petra Nova, Archer Daniels Midland, and Air Products & Chemicals—have captured and injected over 10.8 million metric tons of CO2. The success of these projects is paving the way toward a cleaner and more sustainable American energy future.

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Egypt-Saudi Electricity Interconnection enables cross-border power trading, 3,000 MW capacity, and peak-demand balancing across the Middle East, boosting grid stability, reliability, and energy security through an advanced electricity network, interconnector infrastructure, and GCC grid integration.

Key Points

A 3,000 MW grid link letting Egypt and Saudi Arabia trade power, balance peak demand, and boost regional reliability.

✅ $1.6B project; Egypt invests ~$600M; 2-year construction timeline

✅ 3,000 MW capacity; peak-load shifting; cross-border reliability

✅ Links GCC grid; complements Jordan and Libya interconnectors

Egypt will connect its electricity network to Saudi Arabia, joining a system in the Middle East that has allowed neighbors to share power, similar to the Scotland-England subsea project that will bring renewable power south.

The link will cost about $1.6 billion, with Egypt paying about $600 million, Egypt’s Electricity Minister Mohamed Shaker said Monday at a conference in Cairo, as the country pursues a smart grid transformation to modernize its network. Contracts to build the network will be signed in March or April, and construction is expected to take about two years, he said. In times of surplus, Egypt can export electricity and then import power during shortages.

"It will enable us to benefit from the difference in peak consumption,” Shaker said. “The reliability of the network will also increase.”

Transmissions of electricity across borders in the Gulf became possible in 2009, when a power grid connected Qatar, Kuwait, Saudi Arabia and Bahrain, a dynamic also seen when Ukraine joined Europe's grid under emergency conditions. The aim of the grid is to ensure that member countries of the Gulf Cooperation Council can import power in an emergency. Egypt, which is not in the GCC, may have been able to avert an electricity shortage it suffered in 2014 if the link with Saudi Arabia existed at the time, Shaker said.

The link with Saudi Arabia should have a capacity of 3,000 megawatts, he said. Egypt has a 450-megawatt link with Jordan and one with Libya at 200 megawatts, the minister said. Egypt will seek to use its strategic location to connect power grids in Asia, where the Philippines power grid efforts are raising standards, and elsewhere in Africa, he said.

In 2009, a power grid linked Qatar, Kuwait, Saudi Arabia and Bahrain, allowing the GCC states to transmit electricity across borders, much like proposals for a western Canadian grid that aim to improve regional reliability. 

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Alaska Coal-Fired CHP Plant opens near Usibelli mine, supplying electricity and district heat to UAF; remote location without gas pipelines, low wind and solar potential, and high heating demand shaped fuel choice.

Key Points

A 17 MW coal CHP at UAF producing power and campus heat, chosen for remoteness and lack of gas pipelines.

✅ 17 MW generator supplying electricity and district heat

✅ Near Usibelli mine; limited pipeline access shapes fuel

✅ Alternative options like LNG, wind, solar not cost-effective

One way to boost coal in the US: Find a spot near a mine with no access to oil or natural gas pipelines, where it’s not particularly windy and it’s dark much of the year.

That’s how the first coal-fired plant to open in the U.S. since 2015 bucked the trend in an industry that’s seen scores of facilities close in recent years. A 17-megawatt generator, built for $245 million, is set to open in April at the University of Alaska Fairbanks, just 100 miles from the state’s only coal mine.

“Geography really drove what options are available to us,” said Kari Burrell, the university’s vice chancellor for administrative services, in an interview. “We are not saying this is ideal by any means.”

The new plant is arriving as coal fuels about 25 percent of electrical generation in the U.S., down from 45 percent a decade earlier, even as some forecasts point to a near-term increase in coal-fired generation in 2021. A near-record 18 coal plants closed in 2018, and 14 more are expected to follow this year, according to BloombergNEF.

The biggest bright spot for U.S. coal miners recently has been exports to overseas power plants. At home, one of the few growth areas has been in pizza ovens.

There are a handful of other U.S. coal power projects that have been proposed, including plans to build an 850 megawatt facility in Georgia and an 895 megawatt plant in Kansas, even as a Minnesota utility reports declining coal returns across parts of its portfolio. But Ashley Burke, a spokeswoman for the National Mining Association, said she’s unaware of any U.S. plants actively under development besides the one in Alaska.

Future of power

“The future of power in the U.S. does not include coal,” Tessie Petion, an analyst for HSBC Holdings Plc, said in a research note, a view echoed by regions such as Alberta retiring coal power early in their transition.

Fairbanks sits on the banks of the Chena River, amid the vast subarctic forests in the heart of Alaska. The oil and gas fields of the state’s North slope are 500 miles north. The nearest major port is in Anchorage, 350 miles south.

The university’s new plant is a combined heat and power generator, which will create steam both to generate electricity and heat campus buildings. Before opting for coal, the school looked into using liquid natural gas, wind and solar, bio-mass and a host of other options, as new projects in Southeast Alaska seek lower electricity costs across the region. None of them penciled out, said Mike Ruckhaus, a senior project manager at the university.

The project, financed with university and state-municipal bonds, replaces a coal plant that went into service in 1964. University spokeswoman Marmian Grimes said it’s worth noting that the new plant will emit fewer emissions.

The coal will come from Usibelli Coal Mine Inc., a family-owned business that produces between 1.2 and 2 million tons per year from a mine along the Alaska railroad, according to the company’s website.

While any new plant is good news for coal miners, Clarksons Platou Securities Inc. analyst Jeremy Sussman said this one is "an isolated situation."

“We think the best producers can hope for domestically is a slow down in plant closures,” he said, even as jurisdictions like Alberta close their last coal plant entirely.

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Hydroelectric retrofits for unpowered dams leverage turbines to add renewable capacity, bolster grid reliability, and enable low-impact energy storage, supporting U.S. and Canada decarbonization goals with lower costs, minimal habitat disruption, and climate resilience.

Key Points

They add turbines to existing dams to make clean power, stabilize the grid, and offer low-impact storage at lower cost.

✅ Lower capex than new dams; minimal habitat disruption

✅ Adds firming and storage to support wind and solar

✅ New low-head turbines unlock more retrofit sites

As countries race to get their power grids off fossil fuels to fight climate change, there's a big push in the U.S. to upgrade dams built for purposes such as water management or navigation with a feature they never had before — hydroelectric turbines. 

And the strategy is being used in parts of Canada, too, with growing interest in hydropower from Canada supplying New York and New England.

The U.S. Energy Information Administration says only three per cent of 90,000 U.S. dams currently generate electricity. A 2012 report from the U.S. Department of Energy found that those dams have 12,000 megawatts (MW) of potential hydroelectric generation capacity. (According to the National Hydropower Association, 1 MW can power 750 to 1,000 homes. That means 12,000 MW should be able to power more than nine million homes.)

As of May 2019, there were projects planned to convert 32 unpowered dams to add 330 MW to the grid over the next several years.

One that was recently completed was the Red Rock Hydroelectric Project, a 60-year-old flood control dam on the Des Moines River in Iowa that was retrofitted in 2014 to generate 36.4 MW at normal reservoir levels, and up to 55 MW at high reservoir levels and flows. It started feeding power to the grid this spring, and is expected to generate enough annually to supply power to 18,000 homes.

It's an approach that advocates say can convert more of the grid from fossil fuels to clean energy, often with a lower cost and environmental impact than building new dams.

Hydroelectric facilities can also be used for energy storage, complementing intermittent clean energy sources such as wind and solar with pumped storage to help maintain a more reliable, resilient grid.

The Nature Conservancy and the World Wildlife Fund are two environmental groups that oppose new hydro dams because they can block fish migration, harm water quality, damage surrounding ecosystems and release methane and CO2, and in some regions, Western Canada drought has reduced hydropower output as reservoirs run low. But they say adding turbines to non-powered dams can be part of a shift toward low-impact hydro projects that can support expansion of solar and wind power.

Paul Norris, president of the Ontario Waterpower Association, said there's typically widespread community support for such projects in his province amid ongoing debate over whether Ontario is embracing clean power in its future plans. "Any time that you can better use existing assets, I think that's a good thing."

New turbine technology means water doesn't need to fall from as great a height to generate power, providing opportunities at sites that weren't commercially viable in the past, Norris said, with recent investments such as new turbines in Manitoba showing what is possible.

In Ontario, about 1,000 unpowered dams are owned by various levels of government. "With the appropriate policy framework, many of these assets have the potential to be retrofitted for small hydro," Norris wrote in a letter to Ontario's Independent Electricity System Operator this year as part of a discussion on small-scale local energy generation resources.

He told CBC that several such projects are already in operation, such as a 950 kW retrofit of the McLeod Dam at the Moira River in Belleville, Ont., in 2008. 

Four hydro stations were going to be added during dam refurbishment on the Trent-Severn Waterway, but they were among 758 renewable energy projects cancelled by Premier Doug Ford's government after his election in 2018, a move examined in an analysis of Ontario's dirtier electricity outlook and its implications.

Patrick Bateman, senior vice-president of Waterpower Canada, said such dam retrofit projects are uncommon in most provinces. "I don't see it being a large part of the future electricity generation capacity."

He said there has been less movement on retrofitting unpowered dams in Canada compared to the U.S., because:

There are a lot more opportunities in Canada to refurbish large, existing hydro-generating stations to boost capacity on a bigger scale.

There's less growth in demand for clean energy, because more of Canada's grid is already non-carbon-emitting (80 per cent) compared to the U.S. (40 per cent).

Even so, Norris thinks Canadians should be looking at all opportunities and options when it comes to transitioning the grid away from fossil fuels, including retrofitting non-powered dams, especially as a recent report highlights Canada's looming power problem over the coming decades.

"If we're going to be serious about addressing the inevitable challenges associated with climate change targets and net zero, it really is an all-of-the-above approach."

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