Can food waste be turned into green hydrogen to produce electricity?

Nature-friendly offshore wind energy supports climate neutrality by reducing greenhouse gases while safeguarding marine biodiversity through EU marine spatial planning, ecosystem-based approaches, cross-border coordination, and zero-use zones for resilient seas.

Key Points

An approach to offshore wind that cuts emissions while respecting ecological limits and protecting marine biodiversity.

✅ Aligns buildout with ecological limits and marine spatial plans

✅ Minimizes noise, collision, and habitat loss for sensitive species

✅ Coordinates EU-wide monitoring, data, and cross-border siting

Offshore wind power can help reduce greenhouse gas emissions, but it poses risks for the seas. Germany will hold the EU Council Presidency and the North Sea Energy Cooperation Presidency in 2020. What must be done to contain the climate and species crises, as it were?

Offshore wind power is an important regenerative energy source with a $1 trillion market outlook in the coming decades. However, the construction, operation and maintenance of the systems put marine mammals, birds and fish at considerable risk. Photo: Siemens AG

In order to achieve the German and EU climate and energy goals by 2030 and climate neutrality by 2050, we need a nature-friendly energy transition. At present, the European energy system is largely based on fossil fuels. This is changing, as renewables surge across Europe for end consumers and industry and the large-scale electrification of the energy consumption sectors. Offshore wind energy is an element for future power generation.

A nature-friendly energy transition is only possible if energy consumption is reduced and energy efficiency is maximized in all applications and sectors. Emissions reductions through offshore wind energy In 2019, Europe had an installed offshore wind energy capacity of around 22 gigawatts from 5,047 grid-connected wind turbines in twelve countries. In Germany, the nominal output of the offshore wind turbines feeding into the German power grid was around 7.5 gigawatts, with clean energy accounting for about 50% of electricity nationwide. The wind blows much stronger and more steadily at sea than on land.

The power capacity of the turbines has also almost doubled in the last five years, which has led to a higher energy yield. Offshore wind energy is a building block for replacing fossil fuels, and markets like the U.S. offshore sector are about to soar as well. Wind turbines at sea provide electricity almost every hour of the year and have operating hours that are as high as conventional power plants. They can contribute to significant reductions in CO2 emissions and to mitigate the climate crisis.

It must be ensured that offshore wind turbines and parks as well as the grid infrastructure make a positive contribution to climate protection through their expansion and that the overall condition of marine ecosystems improves. The expansion of offshore wind energy is necessary from the point of view of climate science and must take place within the framework of the ecological load limits and under nature conservation aspects.

Seas and marine ecosystems suffer from years of overfishing, pollution and industrial use. The conservation status of sea birds, marine mammals and fish stocks is poor. Ecosystem services and productivity of the oceans are decreasing as a result of massive species extinction and unfavorable habitats. Changes in sea temperature, oxygen levels and acidification of the oceans reduce their resilience to the climate crisis.

The latest reports from the European Environment Agency show in black and white that the good environmental status and other goals of the Marine Strategy Framework Directive are not being achieved. The primary goal must therefore be to meet the obligations of the Marine Strategy Framework Directive and the EU nature conservation directives.

With the expansion of offshore wind energy, the pressure on the already polluted marine ecosystems is increasing. Offshore wind turbines also harbor risks for marine ecosystems, especially if they are built in unfavorable locations. Studies show harmful effects on marine mammals, birds, fish and the ocean floor. In Europe, where wind power investments hit $29.4 billion last year, a regulatory framework must be created for the expansion of offshore wind energy within the ecological limits and taking into account zero-use zones. The European Union urgently needs to take coherent measures for healthy and resilient seas.

New strategy of the European Commission The EU Commission plans to present a strategy for the expansion of renewable energies at sea on November 18, 2020.

The strategy will address the opportunities and challenges associated with the expansion of renewable energies at sea, such as effects on energy networks and markets, management of the maritime space, the technological transfer of research projects, regional and international cooperation and industrial policy dimensions, as well as political headwinds in some countries that can affect project pipelines. NABU welcomes the strategy, but worries about insufficient consideration of marine protection, ecological load-bearing capacity and the marine spatial planning that regulates interests in the use of the sea. All EU member states have to submit their marine spatial planning plans by March 2021.

Conclusions of the European Council Shortly before the end of 2020, the European Council plans to adopt conclusions for cooperation among European member states on the subject of offshore wind energy and other renewable energy sources at sea. It is important that the planning and development of offshore wind energy is coordinated across national borders, including alignment with the UK's offshore wind growth, also to protect marine ecosystems.

However, the ecosystem approach must not be left out. It must be ensured that the Council conclusions focus on the implementation of EU marine and nature conservation directives for the expansion of offshore wind energy within the load limits. EU-wide monitoring systems can help protect marine species and ecosystems. Germany holds the EU Council Presidency and the North Sea Energy Cooperation Presidency for 2020 and can make a decisive contribution.

NABU demands on offshore wind energy in Europe Expansion targets for offshore wind energy across Europe should be based on the ecological load limits of the seas. Development of concrete concepts for the ecological upgrading of areas in marine spatial planning and operationalization of the ecosystem-based approach.

For the nature-friendly expansion of offshore – Wind energy systems must take into account avoidance distances from seabirds to turbines, habitat loss, collision risks and cumulative effects. Implementation / obligation to sensitivity analyzes – they allow targeted conclusions about the best possible locations for offshore wind energy without conflicts with marine protection.

Targeted keeping of areas free for species and their Habitats of anthropogenic use – this increases planning security and can lower investment thresholds for EU funding programs. Ensuring regional cooperation between the European member states for nature Protection and with the involvement of nature conservation authorities – after all, the marine ecosystem does not stop at borders.

Adjustment of priorities: If offshore wind energy is prioritized over other renewable energy sources across Europe, other industrial forms of use of the seas must be given a lower priority.

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ThangLong Wind Project Vietnam targets $12b, 3,400 MW offshore wind in Binh Thuan, aligned with PDP8, 2025-2028 timeline, EVN grid integration, and private transmission lines to support renewable energy growth and local industry.

Key Points

A $12b, 3,400 MW offshore wind farm off Binh Thuan, aiming first power by 2025 and full capacity by 2028.

✅ 20-60 km offshore; 30-55 m water depth site

✅ Seeks licenses for private transmission lines, beyond EVN

✅ 50% local spend; boosts supply chain and jobs

U.K. energy firm Enterprize Energy, reflecting momentum in UK offshore wind, wants to begin operating its $12-billion offshore wind power project in central Vietnam by the end of 2025.
Company chairman Ian Hatton proposed the company’s ThangLong Wind Project in the central province of Binh Thuan be included in Vietnam’s 8th National Power Development Plan, which is being drafted at present, so that at least part of the project can begin operations by the end of 2025 and all of it by 2028.

Renewable energy is a priority in the development plan that the Ministry of Industry and Trade will submit to the government next month. About 37.5 percent of new energy supply in the next decade will come from renewable energy, aligning with wind leading the power mix trends globally, it envisages.

However, due to concerns of overload to the national grid, and as build-outs like North Sea wind farms show similar coordination needs, Hatton, at a Wednesday meeting with Prime Minister Nguyen Xuan Phuc and U.K. Minister of State for Trade Policy Greg Hands, proposed the government gives Enterprize Energy licenses to develop transmission lines to handle future output.

Developing transmission lines in Vietnam has been the exclusive preserve of the national utility Vietnam Electricity (EVN), and large domestic projects such as the Hoa Binh hydropower expansion have typically aligned with this framework.

The 3,400-megawatt ThangLong Wind Project is to be located between 20 and 60 kilometers off the coast of Binh Thuan, mirroring international interest where Japanese utilities in UK offshore wind have scaled similar assets, at a depth of 30-55 meters. Enterprize Energy had said wind resources in this area exceed its expectations.

The project’s construction is expected to stimulate Vietnam’s economic growth, and experiences from U.S. offshore wind competitiveness suggest improving economics, with 50 percent of construction and operational expenses made locally.

Vietnam needs $133.3 billion over the next decade for building new power plants and expanding the grid to meet the growing demand for electricity, while regional agreements like a Bangladesh power supply deal illustrate rising demand, the ministry has estimated.

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USPS Electric Mail Trucks promise zero-emission delivery, lower lifecycle and maintenance costs, and cleaner air. Congressional funding in Build Back Better would modernize the EV fleet and expand charging infrastructure, improving public health nationwide.

Key Points

USPS Electric Mail Trucks are zero-emission delivery vehicles that cut costs, reduce pollution, and improve health.

✅ Lower lifetime fuel and maintenance costs vs gas trucks

✅ Cuts greenhouse gas and NOx emissions in communities

✅ Expands charging infrastructure via federal investments

The U.S. Postal Service faces serious challenges, with billions of dollars in annual losses and total mail volume continuing to decline. Meanwhile, Congress is constantly hamstringing the agency.

But now lawmakers have an opportunity to invest in the Postal Service in a way that would pay dividends for years to come: By electrifying the postal fleet.

Tucked inside the massive social spending and climate package lumbering through the Senate is money for new, cleaner postal delivery trucks. There’s a lot to like about electric postal trucks. They’d significantly improve Americans’ health while also slowing climate change. And it just makes sense for taxpayers over the long term; the Postal Service’s private sector competitors have already made similar investments, as EV adoption reaches an EV inflection point in the market. As Democrats weigh potential areas to cut in President Joe Biden’s Build Back Better plan, this is one provision that should escape the knife.

To call the U.S. Postal Service’s current vehicles “clunkers” would be an understatement. These often decades-old trucks are famous for having no airbags, no air conditioning and a nasty habit of catching fire. So the Postal Service’s recent decision to buy 165,000 replacement trucks is basically a no-brainer. But the main question is whether they will run on electricity or gasoline.

Electric vehicles are newer to the market and still carry a higher sticker price, as seen with electric bus adoption in many cities. But that higher price buys concrete benefits, like lower lifetime fuel and maintenance costs and huge reductions in pollution. Government demand for electric trucks will also push private markets to create better, cheaper vehicles, directly benefiting consumers. So while buying electric postal trucks may be somewhat more costly at first, over the long term, failing to do so could be far costlier.

At some level, this is a straightforward business decision that the Postal Service’s competitors have already made. For instance, Amazon has already deployed some of the 100,000 electric vans it recently ordered, and FedEx has promised a fully electric ground fleet by 2040, while nonprofit investment in electric trucks is accelerating electrification at major ports. In a couple of decades, the Postal Service could be the only carrier still driving dirty gas guzzlers, buying expensive fuel and paying the higher maintenance costs that combustion engines routinely require. Consumers could flock to greener competitors.

Beyond these business advantages, zero-emission vehicles carry other big benefits for the public. The Postal Service recently calculated some of these benefits by estimating the climate harms that going all-electric would avoid, benefits that persist even where electricity generation still includes fossil-generated electricity in nearby grids. Its findings were telling: A fully electric fleet would prevent millions or tens of millions of dollars’ worth of climate-change-related harms to property and human health each year of the trucks’ lifetimes (and this is probably a considerable underestimate). The world leaders that recently gathered at the global climate summit in Glasgow encouraged exactly this type of transition toward low-carbon technologies.

A cleaner postal fleet would benefit Americans in many other important ways. In addition to warming the planet, tailpipe pollutants can have dire health consequences for the people who breathe in the fumes. Mail trucks traverse virtually every neighborhood in the country and often must idle in residential areas, so we all benefit when they stop emitting. And these localized harms are not distributed equally. Some parts of the country — too often, low-income communities of color — already have poor air quality. Removing pollution from dirty mail trucks will especially help these overburdened and underserved populations.

The government’s purchasing power also routinely inspires companies to devise better and cheaper ways to do business. Investments in aerospace technologies, for instance, have spilled over into consumer innovations, giving us GPS technologies and faster, more fuel-efficient passenger jets. Bulk demand for cleaner trucks could inspire similar innovations as companies clamor for government contracts, meaning we all could get cheaper and better green products like car batteries, and the American EV boom could further accelerate those gains.

Additionally, because postal trucks are virtually everywhere in the country, if they go electric, that would mean more charging stations and grid updates everywhere too, and better utility planning for truck fleets to ensure reliable service. Suddenly, that long road trip that discourages many would-be electric car buyers may be simpler, which could boost electric vehicle adoption.

White House climate adviser Gina McCarthy talks with EVgo CEO Cathy Zoi before the start of an event near an EVgo electric car charging station.
ENERGY

The case for electrifying the postal fleet is strong from both a business and a social standpoint. Indeed, even Postmaster General Louis DeJoy, who was appointed during the Trump administration, supports it. But getting there is not so simple. Most private businesses could just borrow the money they need for this investment and pay it back with the long-term savings they would enjoy. But not the Postal Service. Thanks to its byzantine funding structure, it cannot afford electric trucks’ upfront costs unless Congress either provides the money or lets it borrow more. This is the primary reason it has not committed to making more than 10 percent of its fleet electric.

And that returns us to the Build Back Better legislation. The version passed by the House sets aside $7 billion to help the Postal Service buy electric mail trucks — enough to electrify the vast majority of its fleet by the end of the decade.

Biden has made expanding the use of electric vehicles a top priority, setting an ambitious goal of 100 percent zero-emission federal vehicle acquisitions by 2035, and new EPA emission limits aim to accelerate EV adoption. But Sen. Joe Manchin has expressed resistance to some of the climate-related subsidies in the legislation and is also eager to keep costs down. This provision, however, is worthy of the West Virginia Democrat’s support.

Most Americans would see — and benefit from — these trucks on a daily basis. And for an operation that got its start under Benjamin Franklin, it’s a crucial way to keep the Postal Service relevant.

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Texas High Plains Wind Energy faces ERCOT transmission congestion, limiting turbines in the Panhandle from stabilizing the grid as gas prices surge, while battery storage and solar could enhance reliability and lower power bills statewide.

Key Points

A major Panhandle wind resource constrained by ERCOT transmission, impacting grid reliability and electricity rates.

✅ Over 11,000 turbines can power 9M homes in peak conditions

✅ Transmission congestion prevents flow to major load centers

✅ Storage and solar can bolster reliability and reduce bills

Texas’s High Plains region, which covers 41 counties in the Texas Panhandle and West Texas, is home to more than 11,000 wind turbines — the most in any area of the state.

The region could generate enough wind energy to power at least 9 million homes. Experts say the additional energy could help provide much-needed stability to the electric grid during high energy-demand summers like this one, and even lower the power bills of Texans in other parts of the state.

But a significant portion of the electricity produced in the High Plains stays there for a simple reason: It can’t be moved elsewhere. Despite the growing development of wind energy production in Texas, the state’s transmission network, reflecting broader grid integration challenges across the U.S., would need significant infrastructure upgrades to ship out the energy produced in the region.

“We’re at a moment when wind is at its peak production profile, but we see a lot of wind energy being curtailed or congested and not able to flow through to some of the higher-population areas,” said John Hensley, vice president for research and analytics at the American Clean Power Association. “Which is a loss for ratepayers and a loss for those energy consumers that now have to either face conserving energy or paying more for the energy they do use because they don’t have access to that lower-cost wind resource.”

And when the rest of the state is asked to conserve energy to help stabilize the grid, the High Plains has to turn off turbines to limit wind production it doesn’t need.

“Because there’s not enough transmission to move it where it’s needed, ERCOT has to throttle back the [wind] generators,” energy lawyer Michael Jewell said. “They actually tell the wind generators to stop generating electricity. It gets to the point where [wind farm operators] literally have to disengage the generators entirely and stop them from doing anything.”

Texans have already had a few energy scares this year amid scorching temperatures and high energy demand to keep homes cool. The Electric Reliability Council of Texas, which operates the state’s electrical grid, warned about drops in energy production twice last month and asked people across the state to lower their consumption to avoid an electricity emergency.

The energy supply issues have hit Texans’ wallets as well. Nearly half of Texas’ electricity is generated at power plants that run on the state’s most dominant energy source, natural gas, and its price has increased more than 200% since late February, causing elevated home utility bills.

Meanwhile, wind farms across the state account for nearly 21% of the state’s power generation. Combined with wind production near the Gulf of Mexico, Texas produced more than one-fourth of the nation’s wind-powered electric generation last year.

Wind energy is one of the lowest-priced energy sources because it is sold at fixed prices, turbines do not need fuel to run and the federal government provides subsidies. Texans who get their energy from wind farms in the High Plains region usually pay less for electricity than people in other areas of the state. But with the price of natural gas increasing from inflation, Jewell said areas where wind energy is not accessible have to depend on electricity that costs more.

“Other generation resources are more expensive than what [customers] would have gotten from the wind generators if they could move it,” Jewell said. “That is the definition of transmission congestion. Because you can’t move the cheaper electricity through the grid.”

A 2021 ERCOT report shows there have been increases in stability constraints for wind energy in recent years in both West and South Texas that have limited the long-distance transfer of power.

“The transmission constraints are such that energy can’t make it to the load centers. [High Plains wind power] might be able to make it to Lubbock, but it may not be able to make it to Dallas, Fort Worth, Houston or Austin,” Jewell said. “This is not an insignificant problem — it is costing Texans a lot of money.”

Some wind farms in the High Plains foresaw there would be a need for transmission. The Trent Wind Farm was one of the first in the region. Beginning operations in 2001, the wind farm is between Abilene and Sweetwater in West Texas and has about 100 wind turbines, which can supply power to 35,000 homes. Energy company American Electric Power built the site near a power transmission network and built a short transmission line, so the power generated there does go into the ERCOT system.

But Jewell said high energy demand and costs this summer show there’s a need to build additional transmission lines to move more wind energy produced in the High Plains to other areas of the state.

Jewell said the Public Utility Commission, which oversees the grid, is conducting tests to determine the economic benefits of adding transmission lines from the High Plains to the more than 52,000 miles of lines that already connect to the grid across the state. As of now, however, there is no official proposal to build new lines.

“It does take a lot of time to figure it out — you’re talking about a transmission line that’s going to be in service for 40 or 50 years, and it’s going to cost hundreds of millions of dollars,” Jewell said. “You want to be sure that the savings outweigh the costs, so it is a longer process. But we need more transmission in order to be able to move more energy. This state is growing by leaps and bounds.”

A report by the American Society of Civil Engineers released after the February 2021 winter storm stated that Texas has substantial and growing reliability and resilience problems with its electric system.

The report concluded that “the failures that caused overwhelming human and economic suffering during February will increase in frequency and duration due to legacy market design shortcomings, growing infrastructure interdependence, economic and population growth drivers, and aging equipment even if the frequency and severity of weather events remains unchanged.”

The report also stated that while transmission upgrades across the state have generally been made in a timely manner, it’s been challenging to add infrastructure where there has been rapid growth, like in the High Plains.

Despite some Texas lawmakers’ vocal opposition against wind and other forms of renewable energy, and policy shifts like a potential solar ITC extension can influence the wind market, the state has prime real estate for harnessing wind power because of its open plains, and farmers can put turbines on their land for financial relief.

This has led to a boom in wind farms, even with transmission issues, and nationwide renewable electricity surpassed coal in 2022 as deployment accelerated. Since 2010, wind energy generation in Texas has increased by 15%. This month, the Biden administration announced the Gulf of Mexico’s first offshore wind farms will be developed off the coasts of Texas and Louisiana and will produce enough energy to power around 3 million homes.

“Texas really does sort of stand head and shoulders above all other states when it comes to the actual amount of wind, solar and battery storage projects that are on the system,” Hensley said.

One of the issues often brought up with wind and solar farms is that they may not be able to produce as much energy as the state needs all of the time, though scientists are pursuing improvements to solar and wind to address variability. Earlier this month, when ERCOT asked consumers to conserve electricity, the agency listed low wind generation and cloud coverage in West Texas as factors contributing to a tight energy supply.

Hensley said this is where battery storage stations can help. According to the U.S. Energy Information Administration, utility-scale batteries tripled in capacity in 2021 and can now store up to 4.6 gigawatts of energy. Texas has been quickly developing storage projects, spurred by cheaper solar batteries, and in 2011, Texas had only 5 megawatts of battery storage capacity; by 2020, that had ballooned to 323.1 megawatts.

“Storage is the real game-changer because it can really help to mediate and control a lot of the intermittency issues that a lot of folks worry about when they think about wind and solar technology,” Hensley said. “So being able to capture a lot of that solar that comes right around noon to [1 p.m.] and move it to those evening periods when demand is at its highest, or even move strong wind resources from overnight to the early morning or afternoon hours.”

Storage technology can help, but Hensley said transmission is still the big factor to consider.

Solar is another resource that could help stabilize the grid. According to the Solar Energy Industries Association, Texas has about 13,947 megawatts of solar installed and more than 161,000 installations. That’s enough to power more than 1.6 million homes.

This month, the PUC formed a task force to develop a pilot program next year that would create a pathway for solar panels and batteries on small-scale systems, like homes and businesses, to add that energy to the grid, similar to a recent virtual power plant in Texas rollout. The program would make solar and batteries more accessible and affordable for customers, and it would pay customers to share their stored energy to the grid as well.

Hensley said Texas has the most clean-energy projects in the works that will likely continue to put the region above the rest when it comes to wind generation.

“So they’re already ahead, and it looks like they’re going to be even farther ahead six months or a year down the road,” he said.

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Harbour Air Electric Seaplanes pioneer zero-emission aviation with battery-powered de Havilland Beaver flights, pursuing Transport Canada certification for safe, fossil fuel-free service across Vancouver Island routes connecting Vancouver, Victoria, Nanaimo, and beyond.

Key Points

Battery-powered, zero-emission floatplanes by Harbour Air pursuing Transport Canada certification to carry passengers.

✅ 29-minute test flight on battery power alone

✅ New lighter, longer-lasting battery supplier partnership

✅ Aiming to electrify entire 42-aircraft Beaver/Otter fleet

Float plane operator Harbour Air is getting closer to achieving its goal of flying to and from Vancouver Island without fossil fuels, following its first point-to-point electric flight milestone.

A recent flight of the company’s electric de Havilland Beaver test plane saw the aircraft remain aloft for 29 minutes on battery power alone, a sign of an emerging aviation revolution underway.

Harbour Air president Randy Wright says the company has joined with a new battery supplier to provide a lighter and longer-lasting power source, a high-flying example of research investment in the sector.

The company hopes to get Transport Canada certification to start carrying passengers on electric seaplanes by 2023, as projects like the electric-ready Kootenay Lake ferry come online.

"This is all new to Transport, so they've got to make sure it's safe just like our aircraft that are running today,” Wright said Wednesday. “They're working very hard at this to get this certified because it's a first in the world."

Parallel advances in marine electrification, such as electric ships on the B.C. coast, are informing clean-transport goals across the province.

Before the pandemic, Harbour Air flew approximately 30,000 commercial flights annually, along corridors also served by BC Ferries hybrid ships today, between Vancouver, Victoria, Nanaimo, Whistler, Seattle, Tofino, Salt Spring Island, the Sunshine Coast and Comox.

Wright says the company plans to eventually electrify its entire fleet of 42 de Havilland Beaver and Otter aircraft, reflecting a broader shift that includes CIB-backed electric ferries in B.C.

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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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