Electric vehicles can fight climate change, but they’re not a silver bullet: U of T study

US Renewable Energy Cost Advantage signals cheaper utility-scale solar and onshore wind versus natural gas, with LCOE declines, tax credits, and climate policy cutting electricity costs for utilities and grids across the United States.

Key Points

Cheaper solar and wind than natural gas, driven by LCOE drops, tax credits, and policy, lowering US electricity costs.

✅ Utility-scale solar is about one-third cheaper than gas

✅ Onshore wind costs roughly 44 percent less than natural gas

✅ Policy and tax credits accelerate renewables and cut power prices

Natural gas’s dominance as power-plant fuel in the US is fading fast as the cost of electricity generated by US wind and solar projects tumbles and as wind and solar surpass coal in the generation mix, according to Guggenheim Securities.

Utility-scale solar is now about a third cheaper than gas-fired power, while onshore wind is about 44% less expensive, Guggenheim analysts led by Shahriar Pourreza said Monday in a note to clients, a dynamic consistent with falling wholesale power prices in several markets today. 

“Solar and wind now present a deflationary opportunity for electric supply costs,” the analysts said, which “supports the case for economic deployment of renewables across the US,” as the country moves toward 30% wind and solar and one-fourth of total generation in the near term.

Gas prices have surged amid a global supply crunch after Russia’s invasion of Ukraine, while tax-credit extensions and sweeping US climate legislation have brought down the cost of wind and solar, even as renewables surpassed coal in 2022 nationwide. Renewables-heavy utilities like NextEra Energy Inc. and Allete Inc. stand to benefit, and companies that can boost spending on wind and solar, as wind, solar and batteries dominate the 2023 pipeline, will also see faster growth, Guggenheim said.
 

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Canada 2023 Clean Energy Outlook highlights decarbonization, renewables, a net-zero grid by 2035, hydrogen, energy storage, EV mandates, carbon pricing, and critical minerals, aligning with IRA incentives and provincial policies to accelerate the transition.

Key Points

A concise overview of Canada's 2023 path to net-zero: renewables, clean grids, storage, EVs, and hydrogen.

✅ Net-zero electricity regulations target 2035

✅ Alberta leads PPAs and renewables via deregulated markets

✅ Tax credits boost storage, hydrogen, EVs, and critical minerals

The year 2022 may go down as the most successful one yet for climate action. It was marked by monumental shifts in energy policy from governments, two COP meetings and heightened awareness of the private sector's duty to act.

In the U.S., the Inflation Reduction Act (IRA) was the largest federal legislation to tackle climate change, injecting $369 billion of tax credits and incentives for clean energy, Biden's EV agenda and carbon capture, energy storage, energy efficiency and research.

The European Union accelerated its green policies to transition away from fossil fuels and overhauled its carbon market. China and India made strides on clean energy and strengthened climate policies. The International Energy Agency made its largest revision yet as renewables continued to proliferate.

The U.S. ratified the Kigali Amendment, one of the strongest global climate policies to date.

Canada was no different. The 2022 Fall Economic Statement was announced to respond to the IRA, offering an investment tax credit for renewables, clean technology and green hydrogen alongside the Canada Growth Fund. The federal government also proposed a 2035 deadline for clean electrical grids and a federal zero-emissions vehicle (ZEV) sales mandate for light-duty vehicles.

With the momentum set, more action is promised in 2023: Canadian governments are expected to unveil firmer details for the decarbonization of electricity grids to meet 2035 deadlines; Alberta is poised to be an unlikely leader in clean energy.

Greater attention will be put on energy storage and critical minerals. Even an expected economic downturn is unlikely to stop the ball that is rolling.

Shane Doig, the head of energy and natural resources at KPMG in Canada, said events in 2022 demonstrated the complexity of the energy transformation and opened “a more balanced conversation around how Canada can transition to a lower carbon footprint, whilst balancing the need for affordable, readily available electricity.”

Expect further developments on clean electricity
2023 shapes up as a crucial year for Canada’s clean electricity grid.

The federal government announced it will pursue a net-zero electricity grid by 2035 under the Clean Electricity Regulations (CER) framework.

It requires mass renewable and clean energy adoption, phasing out fossil fuel electricity generation, rapid electrification and upgrading transmission and storage while accommodating growth in electricity demand.

The first regulations for consultation are expected early in 2023. The plans will lay out pollution regulations and costs for generating assets to accelerate clean energy adoption, according to Evan Pivnick, the clean energy program manager of Clean Energy Canada.

The Independent Energy System Operator of Ontario (IESO) recently published a three-part report suggesting a net-zero conversion for Ontario could cost $400 billion over 25 years, even as the province weighs an electricity market reshuffle to keep up with increasing electricity demand.

Power Utility released research by The Atmospheric Fund that suggests Ontario could reach a net-zero grid by 2035 across various scenarios, despite ongoing debates about Ontario's hydro plan and rate design.

Dale Beguin, executive vice president at the Canadian Climate Institute, said in 2023 he hopes to see more provincial regulators and governments send “strong signals to the utilities” that a pathway to net-zero is realistic.

He recounted increasing talk from investors in facilities such as automotive plants and steel mills who want clean electricity guarantees before making investments. “Clean energy is a comparative advantage,” he said, which puts the imperative on organizations like the IESO to lay out plans for bigger, cleaner and flexible grids.

Beguin and Pivnick said they are watching British Columbia closely because of a government mandate letter setting a climate-aligned energy framework and a new mandate for the British Columbia Utilities Commission. Pivnick said there may be lessons to be drawn for other jurisdictions.

Alberta’s unlikely rise as a clean energy leader
Though Alberta sits at the heart of Canada’s oil and gas industry and at the core of political resistance to climate policy, it has emerged as a front runner in renewables adoption.

Billion of dollars for wind and solar projects have flowed into Alberta, as the province charts a path to clean electricity with large-scale projects.

Pivnick said an “underappreciated story” is how Alberta leaned into renewables through its “unique market.” Alberta leads in renewables and power purchase agreements because of its deregulated electricity market.

Unlike most provinces, Alberta enables companies to go directly to solar and wind developers to strike deals, a model reinforced under Kenney's electricity policies in recent years, rather than through utilities. It incentivizes private investment, lowers costs and helps meet increasing demand, which Nagwan Al-Guneid, the director of the Business Renewables Centre - Canada at the Pembina Institute, said is “is the No. 1 reason we see this boom in renewables in Alberta.”

Beguin noted Alberta’s innovative ‘reverse auctions,’ where the province sets a competitive bidding process to provide electricity. It ended up making electricity “way cheaper” due to the economic competitiveness of renewables, while Alberta profited and added clean energy to its grid.

In 2019, the Business Renewables Centre-Canada established a target of 2 GW of renewable energy deals by 2025. The target was exceeded in 2022, which led to a revised goal for 10 GW of renewables by 2030.

Al-Guneid wants to see other jurisdictions help more companies buy renewables. She does not universally prescribe deregulation, however, as other mechanisms such as sleeving exist.

Alberta will update its industrial carbon pricing in 2023, requiring large emitters to pay $65 per tonne of carbon dioxide. The fee climbs $15 per tonne each year until it reaches $175 per tonne in 2030. Al-Guneid said as the tax increases, demand for renewable energy certificates will also increase in Alberta.

Pivnick noted Alberta will have an election in 2023, which could have ramifications for energy policy.

Batteries and EV leadership
Manufacturing clean energy equipment, batteries and storage requires enormous quantities of minerals. With the 2022 Fall Economic Statement and the Critical Minerals Strategy, Canada is taking important steps to lead on this front.

Pivnick pointed to battery supply chain investments in Ontario and Quebec as part of Canada’s shift from “a fuel-based (economy) to a materials-based economy” to provide materials necessary for wind turbines and solar panels. The Strategy showed an understanding Canada has a major role to meet its allies’ needs for critical minerals, whether it’s the resources or supply chains.

There is also an opportunity for Canada to forge ahead on energy storage. The Fall Economic Statement proposes a 30 per cent tax credit for investments into energy storage. Pivnick suggested Canada invest further into research and development to explore innovations like green hydrogen and pump storage.

Doig believes Canada is “well poised” for batteries, both in terms of the technology and sustainable mining of minerals like cobalt, lithium and copper. He is bullish for Canada’s electrification based on its clean energy use and increased spending on renewables and energy storage.

He said the federal ZEV mandate will drive increased demand for the power, utilities, and oil and gas industries to respond.

The majority of gas stations, which are owned by the nation’s energy industry, will need to be converted into EV charging stations.

Offsetting a recession 
One challenge will be a poor economic forecast in the near term. A short "technical recession" is expected in 2023.

Inflation remains stubbornly high, which has forced the Bank of Canada to hike interest rates. The conditions will not leave any industry unscathed, but Doig said Canada's decarbonization is unlikely to be halted.

“Whilst a recession would slow things down, the concern around energy security definitely helps offset that concern,” he said.

Amid rising trade frictions and tariff threats, energy security is top of mind for governments and private organizations, accelerating the shift to renewables.

Doig said there is a general feeling a recession would be short-lived, meaning it would be unlikely to impact long-term projects in hydrogen, liquified natural gas, carbon capture and wind and solar.

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Faroe Islands Tidal Kites harness predictable ocean energy with underwater turbines by Minesto, flying figure-eight paths in fjords to amplify tidal power and deliver renewable electricity to SEV's grid near Vestmanna at megawatt scale.

Key Points

Subsea turbines that fly figure-eight paths to harvest tidal currents, delivering reliable renewable power to the grid.

✅ Figure-eight control amplifies speed vs. ambient current

✅ Predictable baseload complementing wind and hydro

✅ 1.2 MW Dragon-class units planned for Faroese fjords

Known as "sea dragons" or "tidal kites", they look like aircraft, but these are in fact high-tech tidal turbines, part of broader ocean and river power efforts generating electricity from the power of the ocean.

The two kites - with a five-metre (16ft) wingspan - move underwater in a figure-of-eight pattern, absorbing energy from the running tide. They are tethered to the fjord seabed by 40-metre metal cables.

Their movement is generated by the lift exerted by the water flow - just as a plane flies by the force of air flowing over its wings.

Other forms of tidal power use technology similar to terrestrial wind turbines, and emerging kite-based wind power shows the concept's versatility, but the kites are something different.

The moving "flight path" allows the kite to sweep a larger area at a speed several times greater than that of the underwater current. This, in turn, enables the machines to amplify the amount of energy generated by the water alone.

An on-board computer steers the kite into the prevailing current, then idles it at slack tide, maintaining a constant depth in the water column. If there were several kites working at once, the machines would be spaced far enough apart to avoid collisions.

The electricity is sent via the tethering cables to others on the seabed, and then to an onshore control station near the coastal town of Vestmanna.

The technology has been developed by Swedish engineering firm Minesto, founded back in 2007 as a spin-off from the country's plane manufacturer, Saab.

The two kites in the Faroe Islands have been contributing energy to Faroe's electricity company SEV, and the islands' national grid, on an experimental basis over the past year.

Each kite can produce enough electricity to power approximately 50 to 70 homes.

But according to Minesto chief executive, Martin Edlund, larger-scale beasts will enter the fjord in 2022.

"The new kites will have a 12-metre wingspan, and can each generate 1.2 megawatts of power [a megawatt is 1,000 kilowatts]," he says. "We believe an array of these Dragon-class kites will produce enough electricity to power half of the households in the Faroes."

The 17 inhabited Faroe islands are an autonomous territory of Denmark. Located halfway between Shetland and Iceland, in a region where U.K. wind lessons resonate, they are home to just over 50,000 people.

Known for their high winds, persistent rainfall and rough seas, the islands have never been an easy place to live. Fishing is the primary industry, accounting for more than 90% of all exports.

The hope for the underwater kites is that they will help the Faroe Islands achieve its target of net-zero emission energy generation by 2030, with advances in wave energy complementing tidal resources along the way.

While hydro-electric power currently contributes around 40% of the islands' energy needs, wind power contributes around 12% and fossil fuels - in the form of diesel imported by sea - still account for almost half.

Mr Edlund says that the kites will be a particularly useful back-up when the weather is calm. "We had an unusual summer in 2021 in Faroes, with about two months with virtually no wind," he says.

"In an island location there is no possibility of bringing in power connections from another country, and tidal energy for remote communities can help, when supplies run low. The tidal motion is almost perpetual, and we see it as a crucial addition to the net zero goals of the next decade."

Minesto has also been testing its kites in Northern Ireland and Wales, where offshore wind in the UK is powering rapid growth, and it plans to install a farm off the coast of Anglesey, plus projects in Taiwan and Florida.

The Faroe Islands' drive towards more environmental sustainability extends to its wider business community, with surging offshore wind investment providing global momentum. The locals have formed a new umbrella organisation - Burðardygt Vinnulív (Faroese Business Sustainability Initiative).

It currently has 12 high-profile members - key players in local business sectors such as hotels, energy, salmon farming, banking and shipping.

The initiative's chief executive - Ana Holden-Peters - believes the strong tradition of working collaboratively in the islands has spurred on the process. "These businesses have committed to sustainability goals which will be independently assessed," she says.

"Our members are asking how they can make a positive contribution to the national effort. When people here take on a new idea, the small scale of our society means it can progress very rapidly."

One of the islands' main salmon exporters - Hiddenfjord - is also doing its bit, by ceasing the air freighting of its fresh fish. Thought to be a global first for the Atlantic salmon industry, it is now exporting solely via sea cargo instead.

According to the firm's managing director Atli Gregersen this will reduce its transportation CO2 emissions by more than 90%. However it is a bold move commercially as it means that its salmon now takes much longer to get to key markets.

For example, using air freight, it could get its salmon to New York City within two days, but it now takes more than a week by sea.

What has made this possible is better chilling technology that keeps the fresh fish constantly very cold, but without the damaging impact of deep freezing it. So the fish is kept at -3C, rather than the -18C or below of typical commercial frozen food transportation.

"It's taken years to perfect a system that maintains premium quality salmon transported for sea freight rather than plane," says Mr Gregersen. "And that includes stress-free harvesting, as well as an unbroken cold-chain that is closely monitored for longer shelf life.

"We hope, having shown it can be done, that other producers will follow our lead - and accept the idea that salmon were never meant to fly."

Back in the Faroe Island's fjords, a firm called Ocean Rainforest is farming seaweed.

The crop is already used for human food, added to cosmetics, and vitamin supplements, but the firm's managing director Olavur Gregersen is especially keen on the potential of fermented seaweed being used as an additive to cattle feed.

He points to research which appears to show that if cows are given seaweed to eat it reduces the amount of methane gas that they exhale.

"A single cow will burp between 200 and 500 litres of methane every day, as it digests," says Mr Gregersen. "For a dairy cow that's three tonnes per animal per year.

"But we have scientific evidence to show that the antioxidants and tannins in seaweed can significantly reduce the development of methane in the animal's stomach. A seaweed farm covering just 10% of the largest planned North Sea wind farm could reduce the methane emissions from Danish dairy cattle by 50%."

The technology that Ocean Rainforest uses to farm its four different species of seaweed is relatively simple. Tiny algal seedlings are affixed to a rope which dangles in the water, and they grow rapidly. The line is lifted using a winch and the seaweed strands simply cut off with a knife. The line goes back into the water, and the seaweed starts growing again.

Currently, Ocean Rainforest is harvesting around 200 tonnes of seaweed per annum in the Faroe Islands, but plans to scale this up to 8,000 tonnes by 2025. Production may also be expanded to other areas in Europe and North America.

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Canada Clean Electricity Procurement advances federal operations with renewable energy in Alberta, leveraging RECs, competitive sourcing, Indigenous participation, and grid decarbonization to cut greenhouse gas emissions and stimulate new clean power infrastructure.

Key Points

A plan to procure clean power and RECs, cutting emissions in Alberta and attributing use where renewables are absent.

✅ RFPs to source new clean electricity in Alberta

✅ RECs from net new Canadian renewable generation

✅ Mandatory Indigenous participation via equity or set-asides

Public Services and Procurement Canada (PSPC) is taking concrete steps to meet the Government of Canada's commitment in the Greening Government Strategy to reduce greenhouse gas emissions from federal government buildings, vehicle fleets and other operations, aligning with broader vehicle electrification trends across Canada.

The Honourable Anita Anand, Minister of Public Services and Procurement, announced the Government of Canada has launched Requests for Proposal to buy new clean electricity in the province of Alberta, which is moving ahead with the retirement of coal power to clean its grid, to power federal operations there.

As well, Canada will purchase Renewable Energy Certificates (REC) from new clean energy generation in Canada. This will enable Canada to attribute its energy consumption as clean in regions where new clean renewable sources are not yet available. The Government of Canada is excited about this opportunity to stimulate net new Canadian clean electricity generation through the procurement of RECs and complementary power purchase agreements that secure long-term supply for federal demand.

Together, these contracts will help to ensure Canada is reducing its greenhouse gas footprint by approximately 133 kilotonnes or 56% of total real property emissions in Alberta. Additionally, the contracts will displace approximately 41 kilotonnes of greenhouse gas emissions from electricity use in the rest of Canada, supporting progress toward 2035 clean electricity goals even as challenges remain.

Through these open, fair and transparent competitive procurement processes, PSPC will be a key purchaser of clean electricity and will support the growth of new clean electricity and renewable power infrastructure, such as recent turbine investments in Manitoba that expand capacity.

The Government of Canada's Clean Electricity Initiative plans to use 100% clean electricity by 2022, where available, in alignment with evolving net-zero electricity regulations that shape supply choices, to reduce greenhouse gas emissions and stimulate growth in clean renewable power infrastructure. PSPC has applied the goals of the Government of Canada's Clean Electricity Initiative to its specific requirement for net new clean electricity generation to power federal operations in Alberta.  

These procurements will support economic opportunities for Indigenous businesses by encouraging participation in the move towards clean energy, seen in provincial shifts toward clean power in Ontario that broaden markets. Each Request for Proposal incorporates mandatory requirements for Indigenous participation through equity holdings or set-asides under the Procurement Strategy for Aboriginal Business.

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Alberta Leads Canada’s Renewable Surge showcases how the province is transforming its power grid with wind, solar, and hydrogen energy projects that reduce carbon emissions, create sustainable jobs, and drive Canada’s clean electricity future.

Key Points: Alberta Leads Canada’s Renewable Surge

It is a national clean energy initiative showcasing Alberta’s leadership in renewable electricity generation, grid modernization, and sustainable economic growth.

✅ Expands solar, wind, and hydrogen projects across Alberta

✅ Reduces emissions while strengthening grid reliability

✅ Creates thousands of clean energy jobs and investments

Alberta is rapidly emerging as a national leader in clean electricity, driving Canada’s transition to a low-carbon energy future. A federal overview highlights how the province has become the powerhouse behind the country’s renewable energy growth across the Prairies, phasing out coal ahead of schedule and attracting billions in clean-energy investment.

In 2023, Alberta accounted for an astonishing 92 percent of Canada’s increase in renewable electricity generation, reflecting a renewable energy surge across the province. Solar and wind developments have expanded dramatically, as new lower-cost solar contracts are signed, reducing the province’s reliance on natural gas and cutting emissions from the power sector. Alberta’s vast land area and strong wind and solar resources have made it an ideal location for large-scale renewable projects that are transforming its energy landscape.

Federal programs are helping fuel this momentum. Through the Smart Renewables and Electrification Pathways program, 49 Alberta projects have already received over $660 million in funding, with an additional $152 million announced in the 2024 federal budget. Flagship developments include the Forty Mile Wind Farm and the Big Sky Solar Power Project, each backed by $25 million in federal support. These investments are creating jobs, strengthening grid reliability, and positioning Alberta at the forefront of Canada’s clean energy transition.

Although fossil fuels still dominate Alberta’s electricity mix, a major change is underway. In 2022, coal and natural gas accounted for 81 percent of electricity generation, while renewables and other sources contributed 18 percent, and the province’s hydroelectric capacity remained comparatively small. However, Alberta has successfully phased out coal generation ahead of the federal deadline, marking a milestone achievement in the province’s decarbonization journey.

Alberta’s renewable expansion features some of the country’s most significant projects. The Travers Solar Project in Vulcan County generates up to 465 megawatts — enough to power about 150,000 homes. Indigenous-led solar initiatives are also expanding, underscoring the province’s solar power growth, supported by $160 million in federal funding that has already created more than 1,500 jobs. On the wind side, the 494-megawatt Buffalo Plains Wind Farm, Canada’s largest onshore installation, began operating in 2024, followed by the 190-megawatt Paintearth Wind facility, which signed a 15-year power purchase agreement with Microsoft.

Beyond wind and solar, Alberta is exploring new technologies to maintain a stable, low-carbon grid while addressing solar expansion challenges related to grid integration. The province is collaborating with Saskatchewan on the development of small modular reactors (SMRs) to provide reliable baseload power and support the long-term shift toward net-zero electricity by 2050. Projects integrating carbon capture and storage are also moving forward, such as the proposed Moraine Power Generating Project — a 465-megawatt natural gas plant that is expected to create more than 700 jobs during construction.

The economic potential of Alberta’s clean energy transformation is substantial. Clean Energy Canada estimates that between 2025 and 2050, the province could gain more than 400,000 new jobs in the clean energy sector — triple the number currently employed in the upstream oil and gas industry. These positions will span renewable generation, hydrogen production, grid modernization, and energy storage.

With strong federal backing, aggressive private investment, and rapid deployment of renewable energy, Alberta is redefining its energy identity. Once known for its fossil fuel resources, the province is now positioning itself as a powerhouse for both green energy and fossil fuels in Canada, demonstrating that economic growth and environmental responsibility can go hand in hand.

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Canada Electricity Decarbonization Costs indicate challenging greenhouse gas reductions across a fragmented grid, with wind, solar, nuclear, and natural gas tradeoffs, significant GDP impacts, and Net Zero targets constrained by intermittency and limited interties.

Key Points

Costs to cut power CO2 via wind, solar, gas, and nuclear, considering grid limits, intermittency, and GDP impacts.

✅ Alberta model: eliminate coal; add wind, solar, gas; 26-40% CO2 cuts

✅ Nuclear option enables >75% cuts at higher but feasible system costs

✅ National costs 1-2% GDP; reserves, transmission, land, and waste not included

Along with many western developed countries, Canada has pledged to reduce its greenhouse gas emissions by 40–45 percent by 2030 from 2005 emissions levels, and to achieve net-zero emissions by 2050.

This is a huge challenge that, when considered on a global scale, will do little to stop climate change because emissions by developing countries are rising faster than emissions are being reduced in developed countries. Even so, the potential for achieving emissions reduction targets is extremely challenging as there are questions as to how and whether targets can be met and at what cost. Because electricity can be produced from any source of energy, including wind, solar, geothermal, tidal, and any combustible material, climate change policies have focused especially on nations’ electricity grids, and in Canada cleaning up electricity is viewed as critical to meeting climate pledges.

Canada’s electricity grid consists of ten separate provincial grids that are weakly connected by transmission interties to adjacent grids and, in some cases, to electricity systems in the United States. At times, these interties are helpful in addressing small imbalances between electricity supply and demand so as to prevent brownouts or even blackouts, and are a source of export revenue for provinces that have abundant hydroelectricity, such as British Columbia, Manitoba, and Quebec.

Due to generally low intertie capacities between provinces, electricity trade is generally a very small proportion of total generation, though electricity has been a national climate success in recent years. Essentially, provincial grids are stand alone, generating electricity to meet domestic demand (known as load) from the lowest cost local resources.

Because climate change policies have focused on electricity (viz., wind and solar energy, electric vehicles), and Canada will need more electricity to hit net-zero according to the IEA, this study employs information from the Alberta electricity system to provide an estimate of the possible costs of reducing national CO2 emissions related to power generation. The Alberta system serves as an excellent case study for examining the potential for eliminating fossil-fuel generation because of its large coal fleet, favourable solar irradiance, exceptional wind regimes, and potential for utilizing BC’s reservoirs for storage.

Using a model of the Alberta electricity system, we find that it is infeasible to rely solely on renewable sources of energy for 100 percent of power generation—the costs are prohibitive. Under perfect conditions, however, CO2 emissions from the Alberta grid can be reduced by 26 to 40 percent by eliminating coal and replacing it with renewable energy such as wind and solar, and gas, but by more than 75 percent if nuclear power is permitted. The associated costs are estimated to be some $1.4 billion per year to reduce emissions by at most 40 percent, or $1.9 billion annually to reduce emissions by 75 percent or more using nuclear power (an option not considered feasible at this time).

Based on cost estimates from Alberta, and Ontario’s experience with subsidies to renewable energy, and warnings that the switch from fossil fuels to electricity could cost about $1.4 trillion, the costs of relying on changes to electricity generation (essentially eliminating coal and replacing it with renewable energy sources and gas) to reduce national CO2 emissions by about 7.4 percent range from some $16.8 to $33.7 billion annually. This constitutes some 1–2 percent of Canada’s GDP.

The national estimates provided here are conservative, however. They are based on removing coal-fired power from power grids throughout Canada. We could not account for scenarios where the scale of intermittency turned out worse than indicated in our dataset—available wind and solar energy might be lower than indicated by the available data. To take this into account, a reserve market is required, but the costs of operating such a capacity market were not included in the estimates provided in this study. Also ignored are the costs associated with the value of land in other alternative uses, the need for added transmission lines, environmental and human health costs, and the life-cycle costs of using intermittent renewable sources of energy, including costs related to the disposal of hazardous wastes from solar panels and wind turbines.

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