Sustainable Development Technology Canada Announces Latest Call for Clean Technology Funding Applications

By Canada News Wire


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"If you have a new, innovative technology that helps address climate change or promotes cleaner water, land and air, we want to hear from you!" This is the word coming from Sustainable Development Technology Canada (SDTC), as it announced it is accepting Statements of Interest (SOI) for its twelfth round of funding. The closing date for submissions is October 24, 2007.

SDTC is a not-for-profit corporation created by the Government of Canada to finance and support the late-stage development and pre-commercial demonstration of clean technologies. SDTC is actively seeking applications for technology innovations that deliver clean water, clean soil, clean air, and a reduction in greenhouse gas emissions. Technologies that are designed to deal with more than one of these environmental issues simultaneously are encouraged.

"SDTC provides both coaching and funding to help strengthen a company's value proposition, consequently increasing the likelihood of successful market uptake," said Vicky J. Sharpe, President and CEO of SDTC. "The demand for clean technology solutions is increasing both in Canada and in our most important markets, so we are strongly encouraging entrepreneurs, academics - creative minds across the country to focus on this rapidly evolving and lucrative market, and to apply to SDTC."

SDTC has released a series of SD Business Case reports that identify priority investment areas for renewable electricity generation, renewable fuels for both biofuel and hydrogen, and for cleaner conventional fuels in the oil and gas sector. The SD Business Case reports represent only some of SDTC's areas of interest; therefore to read the reports please go to the Knowledge Centre at www.sdtc.ca. Applicants are invited to submit technological solutions in all areas of sustainable development.

To date, SDTC has allocated $279 million to 124 clean technology projects. An additional $670 million has been leveraged from project consortia members, for a total portfolio value of $949 million.

The SOI is used for preliminary screening and is subject to a competitive review process by SDTC and a panel of independent experts. The applications are evaluated on the basis of fit with SDTC's mandate, adherence to selection criteria, and to ensure they include necessary technology, marketing, and business capabilities.

Applicants presenting the most compelling technology projects will be invited back to submit a detailed, full proposal for consideration toward funding.

Applications for funding may only be made through the online SOI application system. Prior to submitting an application, applicants are advised to read SDTC's Applications Advice and then contact an Applications Manager to ensure a good fit. Information about SDTC's funding process, including the online application system and Applications Advice, can be found in the Funding section at www.sdtc.ca.

SDTC holds two rounds of funding each year. The next call for SOIs will open February 27, 2008.

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Washington County planning officials develop proposed recommendations for solar farms

Washington County solar farm incentives aim to steer projects to industrial sites with tax breaks, underground grid connections, decommissioning bonds, and wildlife corridors, balancing zoning, historic preservation, and Maryland renewable energy mandates.

 

Key Points

Policies steer solar to industrial sites with tax breaks, buried lines, and bonds, aligning with zoning and state goals.

✅ Tax breaks to favor rooftops and parking canopies

✅ Bury new grid lines to shift projects to industrial parks

✅ Require decommissioning bonds and wildlife corridors

 

Incentives for establishing solar farms at industrial spaces instead of on prime farmland are among the ideas the Washington County Planning Commission is recommending for the county to update its policies regarding solar farms.

Potential incentives would include tax breaks on solar equipment and requiring developers to put power-grid connections and line extensions underground, a move tied to grid upgrade cost debates in other regions, Planning Commission members said during a Monday meeting.

The tax break could make it more attractive for a developer to put a solar farm on a roof or over a parking lot, similar to California's building-solar requirement policies that favor rooftop generation, which could cost more than putting it on farmland, said Commission member Dave Kline, who works for FirstEnergy.

Requiring a company to bury new transmission lines could steer them to industrial or business parks where, theoretically, transmission lines are more readily available, Kline said Wednesday in a phone interview.

Chairman Clint Wiley suggested talking to industrial property owners to create a list of industrial sites that make sense for a solar site, which could generate extra income for the property owner.

Commission members also talked about requiring a wildlife corridor. Anne Arundel County requires such a corridor if a solar site is over 15 acres, according to Jill Baker, deputy director of planning and zoning. The solar site is broken into sections so animals such as deer can get through, she said.

However, that means the solar farm would take up more agricultural land, Commission member Jeremiah Weddle said. Weddle, a farmer, has repeatedly voiced concerns about solar farms using prime farmland.

County zoning law already states solar farms are prohibited in Rural Legacy Areas, Priority Preservation Areas, and within Antietam Overlay zones that preserve the Antietam National Battlefield viewshed. They also cannot be built on land with permanent preservation easements, Baker said.

However, a big reason county officials are looking to strengthen county policies for solar generating systems, or solar farms, is a recent court decision that ruled the Maryland Public Service Commission can preempt county zoning law when it comes to large solar farms.

County zoning law defines a solar energy generating system as a solar facility, with multiple solar arrays, tied into the power grid and whose primary purpose is to generate power to distribute and/or sell into the public utility grid rather than consuming that power on site.

The Maryland Court of Appeals ruled in July that the Public Service Commission can preempt local zoning regarding solar farms larger than 2 megawatts. But the ruling also stated local government is a "significant participant in the process" and the state commission must give "due consideration" to local zoning laws.

County officials are looking at recommendations for solar farms, whether they are over 2 megawatts or not.

Solar farms are a popular issue statewide, especially with Maryland solar subscriptions expanding, and were discussed at a recent Maryland Association of Counties meeting for planners, Planning and Zoning Director Stephen Goodrich said.

The thinking is the best way for counties to express their opinions about a solar project is to participate in the state commission's local public hearings, where issues like how solar owners are paid often arise, Goodrich said. Another popular idea is for the county to continue to follow its process, which requires a public hearing for a special exception to establish a solar farm. That will help the county form an opinion, on individual cases, to offer the state commission, he said.

Recommendations discussed by the Planning Commission include:

A break on personal property taxes, which is on equipment, including affordable battery storage that can firm output, to steer developers away from areas where the county doesn't want solar farms. The Board of County Commissioners have been split on tax-break agreements for solar farms, with a majority recently granting a few.

 

Protecting valuable historic sites.

Requiring a decommissioning bond for removing the equipment at the end of the solar farm's life. The bond is protection in case the company goes bankrupt. The county commissioners have been making such a bond a requirement when granting recent tax breaks.

Looking at allowing solar farms in stormwater-management areas.

Other counties, particularly in Western Maryland and on the Eastern Shore, are having issues with solar farms even as research to improve solar and wind advances, because land is cheaper and there are wide-open spaces, Goodrich said.

Many solar projects are being developed or proposed because state lawmakers passed legislation requiring 50% of electricity produced in the state to come from renewable sources by 2030, and a federal plan to expand solar is also shaping expectations. Of that 50%, 14.5% is to come from solar energy.

In Maryland, the average number of homes that can be powered by 1 megawatt of solar energy is about 110, according to the Solar Energy Industries Association's website.

 

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Consumers Coalition wants Manitoba Hydro?s proposed rate increase rejected

Manitoba Hydro Interim Rate Increase faces PUB scrutiny as consumers coalition challenges a 5% electricity rate hike, citing drought planning, retained earnings, affordability, transparency, and impacts on fixed incomes and northern communities.

 

Key Points

A proposed 5% electricity rate hike under PUB review, opposed by consumers citing drought planning and affordability.

✅ Coalition backs 2% hike; 5% seen as undue burden

✅ PUB review sought; interim process lacks transparency

✅ Retained earnings, efficiencies cited to offset drought

 

The Consumers Coalition is urging the Public Utilities Board (PUB) to reject Manitoba Hydro’s current interim rate increase application, amid ongoing debates about Hydro governance and policy.

Hydro is requesting a five per cent jump in electricity rates starting on January 1, claiming drought conditions warrant the increase but the coalition disagrees, saying a two per cent increase would be sufficient.

The coalition, which includes Harvest Manitoba, the Consumers’ Association of Canada-Manitoba, and the Aboriginal Council of Winnipeg, said a 5 per cent rate increase would put an unnecessary strain on consumer budgets, especially for those on fixed incomes or living up north.

"We feel that, in many ways, Manitobans have already paid for this drought," said Gloria Desorcy, executive director of the Consumers’ Association of Canada - Manitoba.

The coalition argues that hydroelectric companies already plan for droughts and that hydro should be using past earnings to mitigate any losses.

The group claims drought conditions would have added about 0.8 per cent to Hydro’s bottom line. They said remaining revenues from a two per cent increase could then be used to offset the increased costs of major projects like the Keeyask generating station and service its growing debt obligations.

The group also said Hydro is financially secure and is projecting a positive net income of $112 million next year without rate increases, even as utility profits can swing with market conditions, assuming the drought doesn’t continue.

They argue Hydro can use retained earnings as a tool to mitigate losses, rather than relying on deferral accounting that shifts costs, and find further efficiencies within the corporation.

"So we said two per cent, which is much more palatable for consumers especially at the time when so many consumers are struggling with so many higher bills,” said Desorcy.

According to the coalition’s calculations, that works out to a $2-4 increase per month, and debates such as ending off-peak pricing in Ontario show how design affects bills, depending on whether electricity is used for heating, but it could be higher.

The coalition said their proposed two per cent rate increase should be applied to all Manitoba Hydro customers and have a set expiration date of January 1, 2023.

Another issue, according to the coalition, is the process of an interim rate application does not provide any meaningful transparency and accountability, whereas recent OEB decisions in Ontario have outlined more robust public processes.

Desorcy said the next step is up to the PUB, though board upheaval at Hydro One in Ontario shows how governance shifts can influence outcomes.

The board is expected to decide on the proposed increase in the next couple of weeks.

 

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PG&E restoring power after intentional shut-offs affect 20,500 customers

PG&E power restoration continues across Butte and Yuba counties after PSPS shut-offs from high winds and dry weather, with crews patrolling overhead lines, repairing damage, and reopening community resource centers near Lake Berryessa.

 

Key Points

PG&E power restoration safely re-energizes lines after PSPS, using inspections and repairs to restore service.

✅ Crews patrolled 800 miles of overhead lines for hazards

✅ Repairs followed wind damage; gradual re-energization

✅ Resource centers offered water, outlets, air conditioning

 

Pacific Gas and Electric Co. field crews have begun restoring power to approximately 20,500 customers in Butte and Yuba counties after the utility shut off electricity to reduce wildfire risk because of gusty winds and dry weather conditions.

More than half of the affected customers had electricity again as of 1:47 p.m. Sunday, according to PG&E, and by 4 p.m. all of Yuba County power had been restored.

The utility also cut electricity for about 1,600 customers in parts of Napa, Solano and Yolo counties, primarily in the Lake Berryessa area, in a PSPS event separate from statewide grid conservation alerts that can trigger rolling blackouts. Power to those areas was switched off at 6:15 a.m. Saturday but was restored by the evening.

As the danger subsided Sunday, utility workers, as part of PG&E's local response planning for winter storms, worked throughout Butte and Yuba counties to re-energize power lines. The shut-offs affected areas including eastern Chico, Oroville and fire-ravaged Paradise.

Technicians checked lines for damage or fire hazards, like vegetation that could interfere with live wires, Pasion said, as part of broader pandemic grid preparedness that informed utility protocols.

PG&E “patrolled approximately 800 miles of overhead power lines,” the company said in a statement. “Crews found instances of damage to de-energized equipment caused by the extreme weather event and are making necessary repairs.”

While the shut-offs inconvenienced businesses and homeowners, they also highlighted energy inequality across impacted neighborhoods, and some called 911 with emergencies and confusion.

A half hour into the shut-off Saturday night, Butte County sheriff’s dispatchers received a call from a person requesting a welfare check on an individual whose care required electricity, according to department call logs. Two calls overnight from the Magalia area requested medical assistance because residents had oxygen concerns for medically sensitive spouses.

One woman requested an ambulance because her “husband was running out of oxygen,” according to the logs.

Around 4:11 a.m. Sunday, a resident of Hidden Valley Mobile Home Park in Oroville called about a tree falling into a trailer, causing a power line to fall, but noted that the electricity was off.

In a comparable storm-related outage, Sudbury Hydro crews worked to reconnect service after severe weather in Ontario.

And there were multiple calls asking for information about the shut-off, including one caller around midnight who was “demanding PG&E turn his power back on.”

The calls led the Butte County Sheriff’s Office to tweet a reminder Sunday afternoon that 911 is reserved for emergencies and requests for information about the power shutdown should be done through PG&E.

The utility opened a community resource center at Harrison Stadium in Oroville (Butte County) on Sunday morning to provide restrooms, bottled water, power outlets and air conditioning to residents. About 40 people showed up at the center in the first few hours, officials said.

“It’s a small but steady stream,” Pasion said.

Power was being restored to parts of Oroville as of 11 a.m. Sunday.

PG&E officials said it could take up to 48 hours for power to be restored in some areas.

For perspective, during severe storms in Ontario, Hydro One crews restored power to more than 277,000 customers within days.

 

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CT leads New England charge to overhaul electricity market structure

New England Grid Reform Initiative aligns governors with ISO New England to reshape market design, boost grid reliability, accelerate renewable energy and offshore wind, explore carbon pricing and forward clean energy markets, and bolster accountability.

 

Key Points

Five states aim to reform ISO New England markets, prioritize renewables and reliability, and test carbon pricing.

✅ Governors seek market design aligned with clean energy mandates

✅ ISO-NE accountability and stakeholder engagement prioritized

✅ Explore carbon pricing and forward clean energy market options

 

Weeks after initiating a broad overhaul of utility regulation within its borders, Connecticut has recruited four New England states, as Maine debates a 145-mile transmission line project to rework the regional grid that is overseen by ISO New England, the independent system operator charged with ensuring a reliable supply of electricity from power plants.

In a written statement Thursday morning, Gov. Ned Lamont said the current structure “has actively hindered” states’ efforts to phase out polluting power plants in favor of renewable sources like wind turbines and solar panels, while increasing costs “to fix market design failures” in his words. Lamont’s energy policy chief Katie Dykes has emerged as a vocal critic of ISO New England’s structure and priorities, in her role as commissioner of the Connecticut Department of Energy and Environmental Protection.

“When Connecticut opted to deregulate our electricity market, we wanted the benefits of competition — to achieve lower-cost energy, compatible with meeting our clean-energy goals,” Dykes said in a telephone interview Thursday afternoon. “We have a partner [in] ISO New England, to manage this grid and design a market that is not thwarting our clean-energy goals, but achieving them; and not ignoring consumers’ concerns. ... That’s really what we are looking to do — reclaim the benefits of competition and regional cooperation.”

Lamont and his counterparts in Massachusetts, Rhode Island, Vermont and Maine plan to release a “vision document” in their words on Friday through the New England States Committee on Electricity, after New Hampshire rejected a Quebec-Massachusetts transmission proposal that sought to import Canadian hydropower.

The initial documents made no mention of New Hampshire, which likewise obtains electricity through the wholesale markets managed by ISO New England and has seen clashes over the Northern Pass hydropower project in recent years; and whose Seabrook Station is one two nuclear power plants in New England alongside Dominion Energy’s Millstone Power Station in Waterford. Gov. Chris Sununu’s office did not respond immediately to a query on why New Hampshire is not participating.

Connecticut and the four other states outlined a few broad goals that they will hone over the coming months. Those include creating a better market structure and planning process supporting the conversion to renewables; improving grid reliability, with measures such as an emergency fuel stock program considered; and increasing the accountability of ISO New England to the states and by extension their ratepayer households and businesses.

ISO New England spokesperson Matt Kakley indicated the Holyoke, Mass.-based nonprofit will “engage with the states and our stakeholders” on the governors’ proposal, in an email response to a query. He did not elaborate on any immediate opportunities or challenges inherent in the governors’ proposal.

“Maintaining reliable, competitively-priced electricity through the clean energy transition will require broad collaboration,” Kakley stated. “The common vision of the New England governors will play an important role in the discussions currently underway on the future of the grid.”

 

Renewable revolution
ISO New England launched operations in 1999, running auctions through which power plant operators bid to supply electricity, including against long-term projections for future needs that can only be met through the construction or installation of new generation capacity.

ISO New England falls under the jurisdiction of the Federal Energy Regulatory Commission rather than the states whose electricity supplies it is tasked with ensuring. That has led to pointed criticism from Dykes and Connecticut legislators that ISO New England is out of touch with the state’s push to switch to renewable sources of electricity.

Entering October, ISO New England published an updated outlook that revealed 60 percent of proposed power generators in the region’s future “queue” are wind farms, primarily offshore installations like the proposed Park City Wind project of Avangrid and Revolution Wind from Eversource. But Dykes recently criticized as unnecessary an NTE Energy plant approved already by ISO New England for eastern Connecticut, which will be fueled by natural gas if all other regulatory approvals are granted.

The six New England states participate in the Regional Greenhouse Gas Initiative that caps carbon emissions by individual power plants, while allowing them to purchase unused allowances from each other with that revenue funneled to the states to support renewable energy and conservation programs. FERC is now considering the concept of carbon pricing, which would levy a tax on power plants based on their emissions, and it also faces pressure to act on aggregated DERs from lawmakers.

ISO New England is investigating the concepts of net carbon pricing and a “forward clean energy market” that would borrow elements of the existing forward capacity market, but designed to meet individual state objectives for the percentage of renewable power they want generated while ensuring adequate electricity is in place when weather does not cooperate.

The Connecticut Public Utilities Regulatory Authority is collecting on its own initiative industry input on modernization proposals, as New York regulators open a formal review of retail energy markets for comparison, that would add up to hundreds of millions of dollars, including utility-scale batteries to store power generated by offshore wind farms and solar arrays; and “smart” meters in homes and businesses to help electricity customers better manage their power use.

The New England Power Pool serves as a central forum for plant operators, commercial users and others like the Connecticut Office of Consumer Counsel, amid Massachusetts solar demand charge debates that affect distributed generation policy, with NEPOOL’s chair stating Thursday morning the group was still reviewing the governors’ announcement.

“NEPOOL has been engaged this year in meetings ... exploring the transition to a future grid in New England and potential pathways forward to support that transition,” stated Nancy Chafetz, chair of NEPOOL, in an email.

Connecticut’s issues with ISO New England boiled over this summer on the heels of a power-purchase agreement between Millstone owner Dominion and transmission grid operators Eversource and United Illuminating, which contributed to a sharp increase in customer bills.

A few weeks ago, Lamont signed into law a “Take Back the Grid” act that allows the Connecticut Public Utilities Regulatory Authority to factor in Eversource’s and Avangrid subsidiary United Illuminating’s past performance in maintaining electric reliability, in addition to any future needs for revenue based on needed upgrades. The law included an element for Connecticut to initiate a study of ISO New England’s role.

Eversource and Avangrid have voiced support for the switch to “performance-based” regulation in Connecticut. Eversource spokesperson Mitch Gross on Thursday cited the company’s view that any changes to the operation of New England’s wholesale power markets should occur within the existing ISO New England structure.

“We also recommend any examination of potential alternatives includes a thorough evaluation that ensures unfair costs would not be imposed on customers,” Gross stated in an email.

In a statement forwarded by Avangrid spokesperson Ed Crowder, the United Illuminating parent indicated it intends to have “a voice in this process” with the goal of continued grid reliability amid increased adoption of clean energy sources.

 

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Project examines potential for Europe's power grid to increase HVDC Technology

HVDC-WISE Project accelerates HVDC technology integration across the European transmission system, delivering a planning toolkit to boost grid reliability, resilience, and interconnectors for renewables and offshore wind amid climate, cyber, and physical threats.

 

Key Points

EU-funded project delivering tools to integrate HVDC into Europe's grid, improving reliability, resilience, and security.

✅ EU Horizon Europe-backed consortium of 14 partners

✅ Toolkit to assess extreme events and grid operability

✅ Supports interconnectors, offshore wind, and renewables

 

A partnership of 14 leading European energy industry companies, research organizations and universities has launched a new project to identify opportunities to increase integration of HVDC technology into the European transmission system, echoing calls to invest in smarter electricity infrastructure from abroad.

The HVDC-WISE project, in which the University of Strathclyde is the UK’s only academic partner, is supported by the European Union’s Horizon Europe programme.

The project’s goal is to develop a toolkit for grid developers to evaluate the grid’s performance under extreme conditions and to plan systems, leveraging a digital grid approach that supports coordination to realise the full range of potential benefits from deep integration of HVDC technology into the European transmission system.

The project is focused on enhancing electric grid reliability and resilience while navigating the energy transition. Building and maintaining network infrastructure to move power across Europe is an urgent and complex task, and reducing losses with superconducting cables can play a role, particularly with the continuing growth of wind and solar generation. At the same time, threats to the integrity of the power system are on the rise from multiple sources, including climate, cyber, and physical hazards.

 

Mutual support

At a time of increasing worries about energy security and as Europe’s electricity systems decarbonise, connections between them to provide mutual support and routes to market for energy from renewables, a dynamic also highlighted in discussions of the western Canadian electricity grid in North America, become ever more important.

In modern power systems, this means making use of High Voltage Direct Current (HVDC) technology.

The earliest forms of technology have been around since the 1960s, but the impact of increasing reliance on HVDC and its ability to enhance a power system’s operability and resilience are not yet fully understood.

Professor Keith Bell, Scottish Power Professor of Future Power Systems at the University of Strathclyde, said:

As an island, HVDC is the only practical way for us to build connections to other countries’ electricity systems. We’re also making use of it within our system, with one existing and more planned Scotland-England subsea link projects connecting one part of Britain to another.

“These links allow us to maximise our use of wind energy. New links to other countries will also help us when it’s not windy and, together with assets like the 2GW substation now in service, to recover from any major disturbances that might occur.

“The system is always vulnerable to weather and things like lightning strikes or short circuits caused by high winds. As dependency on electricity increases, insights from electricity prediction specialists can inform planning as we enhance the resilience of the system.”

Dr Agusti Egea-Alvarez, Senior Lecturer at Strathclyde, said: “HVDC systems are becoming the backbone of the British and European electric power network, either interconnecting countries, or connecting offshore wind farms.

“The tools, procedures and guides that will be developed during HVDC-WISE will define the security, resilience and reliability standards of the electric network for the upcoming decades in Europe.”

Other project participants include Scottish Hydro Electric Transmission, the Supergrid Institute, the Electric Power Research Institute (EPRI) Europe, Tennet TSO, Universidad Pontificia Comillas, TU Delft, Tractebel Impact and the University of Cyprus.

 

Climate change

Eamonn Lannoye, Managing Director of EPRI Europe, said: “The European electricity grid is remarkably reliable by any standard. But as the climate changes and the grid becomes exposed to more extreme conditions, energy interdependence between regions intensifies and threats from external actors emerge. The new grid needs to be robust to those challenges.”

Juan Carlos Gonzalez, a senior researcher with the SuperGrid Institute which leads the project said: “The HVDC-WISE project is intended to provide planners with the tools and know-how to understand how grid development options perform in the context of changing threats and to ensure reliability.”

HVDC-WISE is supported by the European Union’s Horizon Europe programme under agreement 101075424 and by the UK Research and Innovation Horizon Europe Guarantee scheme.

 

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New fuel cell could help fix the renewable energy storage problem

Proton Conducting Fuel Cells enable reversible hydrogen energy storage, coupling electrolyzers and fuel cells with ceramic catalysts and proton-conducting membranes to convert wind and solar electricity into fuel and back to reliable grid power.

 

Key Points

Proton conducting fuel cells store renewable power as hydrogen and generate electricity using reversible catalysts.

✅ Reversible electrolysis and fuel-cell operation in one device

✅ Ceramic air electrodes hit up to 98% splitting efficiency

✅ Scalable path to low-cost grid energy storage with hydrogen

 

If we want a shot at transitioning to renewable energy, we’ll need one crucial thing: technologies that can convert electricity from wind, sun, and even electricity from raindrops into a chemical fuel for storage and vice versa. Commercial devices that do this exist, but most are costly and perform only half of the equation. Now, researchers have created lab-scale gadgets that do both jobs. If larger versions work as well, they would help make it possible—or at least more affordable—to run the world on renewables.

The market for such technologies has grown along with renewables: In 2007, solar and wind provided just 0.8% of all power in the United States; in 2017, that number was 8%, according to the U.S. Energy Information Administration. But the demand for electricity often doesn’t match the supply from solar and wind, a key reason why the U.S. grid isn't 100% renewable today. In sunny California, for example, solar panels regularly produce more power than needed in the middle of the day, but none at night, after most workers and students return home.

Some utilities are beginning to install massive banks of cheaper solar batteries in hopes of storing excess energy and evening out the balance sheet. But batteries are costly and store only enough energy to back up the grid for a few hours at most. Another option is to store the energy by converting it into hydrogen fuel. Devices called electrolyzers do this by using electricity—ideally from solar and wind power—to split water into oxygen and hydrogen gas, a carbon-free fuel. A second set of devices called fuel cells can then convert that hydrogen back to electricity to power cars, trucks, and buses, or to feed it to the grid.

But commercial electrolyzers and fuel cells use different catalysts to speed up the two reactions, meaning a single device can’t do both jobs. To get around this, researchers have been experimenting with a newer type of fuel cell, called a proton conducting fuel cell (PCFC), which can make fuel or convert it back into electricity using just one set of catalysts.

PCFCs consist of two electrodes separated by a membrane that allows protons across. At the first electrode, known as the air electrode, steam and electricity are fed into a ceramic catalyst, which splits the steam’s water molecules into positively charged hydrogen ions (protons), electrons, and oxygen molecules. The electrons travel through an external wire to the second electrode—the fuel electrode—where they meet up with the protons that crossed through the membrane. There, a nickel-based catalyst stitches them together to make hydrogen gas (H2). In previous PCFCs, the nickel catalysts performed well, but the ceramic catalysts were inefficient, using less than 70% of the electricity to split the water molecules. Much of the energy was lost as heat.

Now, two research teams have made key strides in improving this efficiency, and a new fuel cell concept brings biological design ideas into the mix. They both focused on making improvements to the air electrode, because the nickel-based fuel electrode did a good enough job. In January, researchers led by chemist Sossina Haile at Northwestern University in Evanston, Illinois, reported in Energy & Environmental Science that they came up with a fuel electrode made from a ceramic alloy containing six elements that harnessed 76% of its electricity to split water molecules. And in today’s issue of Nature Energy, Ryan O’Hayre, a chemist at the Colorado School of Mines in Golden, reports that his team has done one better. Their ceramic alloy electrode, made up of five elements, harnesses as much as 98% of the energy it’s fed to split water.

When both teams run their setups in reverse, the fuel electrode splits H2 molecules into protons and electrons. The electrons travel through an external wire to the air electrode—providing electricity to power devices. When they reach the electrode, they combine with oxygen from the air and protons that crossed back over the membrane to produce water.

The O’Hayre group’s latest work is “impressive,” Haile says. “The electricity you are putting in is making H2 and not heating up your system. They did a really good job with that.” Still, she cautions, both her new device and the one from the O’Hayre lab are small laboratory demonstrations. For the technology to have a societal impact, researchers will need to scale up the button-size devices, a process that typically reduces performance. If engineers can make that happen, the cost of storing renewable energy could drop precipitously, thereby moving us closer to cheap abundant electricity at scale, helping utilities do away with their dependence on fossil fuels.

 

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