Explore how Canada makes its electricity, from hydro and wind to solar, nuclear and beyond, and how the grid and net-zero 2050 fit together.
Canada already has one of the cleanest electricity systems in the world, thanks largely to its rivers. Yet the picture looks very different depending on where you live: some provinces run almost entirely on hydro, while others still rely heavily on natural gas or coal. Understanding those differences helps make sense of the news, of energy policy, and of the choices you make at home.
This course is a big-picture tour. You'll learn how Canada generates its electricity, how electricity fits into the country's overall energy use, and the strengths and challenges of each major source: hydro, wind, solar, bioenergy, geothermal, ocean energy and nuclear. You'll also learn how the grid keeps supply and demand in balance and what Canada's net-zero by 2050 goal means.
Energy policy can be divisive. As an independent non-profit, Sundamentals aims to explain the facts clearly and fairly, acknowledge trade-offs, and help you think through the issues for yourself. Where policies are still changing, we say so.
The course is free, self-paced and takes about an hour. It has three modules with short knowledge checks and a 10-question final exam. Score 80% or higher to download your PDF certificate of completion.
Hydroelectricity is the backbone of Canada's power system, supplying roughly 60 percent of the country's electricity. Canada is one of the world's largest producers of hydropower. When nuclear, wind, solar and other low-emission sources are added in, well over three-quarters of Canada's electricity comes from sources that produce little or no greenhouse gas emissions when generating power.
That national average hides big regional differences, because electricity in Canada is mostly organized province by province. Quebec, British Columbia, Manitoba, and Newfoundland and Labrador generate most of their power from hydro. Ontario relies on a mix led by nuclear and hydro. Alberta and Saskatchewan have historically relied on coal and natural gas, though both are adding wind and solar and phasing down coal. Nova Scotia has also relied on fossil fuels while expanding renewables.
Provinces own or regulate their own utilities and set their own electricity policies, so the cost, carbon intensity and rules for things like net metering vary widely. The federal government plays a role through national regulations, funding and climate policy, but day-to-day decisions about the grid are largely made provincially.
This is why the environmental benefit of choices like electric vehicles or heat pumps differs across the country. It is also why many Canadians in the same country can have very different experiences of energy prices and policy debates.
If you want to know your own province's electricity mix, your utility, provincial grid operator or the Canada Energy Regulator publishes regularly updated information. Looking it up is a quick way to understand how clean your electricity is today and how it is expected to change in the coming years.
It is easy to confuse electricity with energy as a whole. Electricity is only one part of the energy Canadians use. Most of the energy used for transportation, home and building heating, and industry still comes from burning oil, natural gas and other fuels directly. That is why a clean electricity grid on its own doesn't make the whole economy low-emission.
Electrification is the idea of switching more of those uses to clean electricity: electric vehicles instead of gasoline cars, heat pumps instead of fuel-burning furnaces, and electric processes in industry. Because electric motors and heat pumps are much more efficient than engines and burners, electrification can reduce total energy needs as well as emissions.
Electrification also means Canada will need much more electricity in the decades ahead. Many studies and governments expect demand to grow substantially, and the federal government's 2026 electricity strategy set a goal of roughly doubling the size of Canada's grid by 2050. Meeting that growth reliably and affordably is one of the central challenges of the energy transition.
Energy efficiency is the other half of the picture. Using less energy for the same comfort and services, through better buildings and smarter equipment, reduces how much new generation must be built.
This shift also changes what energy security means. Instead of relying mainly on fuel supplies and prices set in global markets, a more electrified economy relies on a strong, reliable grid. That raises important questions about building enough generation and transmission, keeping electricity affordable, and making the grid resilient to extreme weather, which you will explore in Module 3.
Hydroelectric plants use flowing or falling water to spin turbines. Large dams with reservoirs can store water and release it when power is needed, which makes hydro an exceptionally flexible, dispatchable source that can ramp up and down to match demand. Run-of-river plants use a river's natural flow with little or no storage. Hydro facilities can operate for many decades.
Hydro has trade-offs. Large projects are expensive, take many years to build, flood land, alter rivers and fish habitat, and have significant effects on Indigenous communities and their territories. Many of the best large sites in Canada are already developed. Today, there is growing emphasis on upgrading existing plants, building projects in partnership with Indigenous nations, and using hydro's flexibility to support other renewables.
Wind turbines capture the energy of moving air. Wind has been one of the fastest-growing sources of electricity in Canada, with large wind farms in Alberta, Ontario, Quebec and other provinces. Once built, wind farms produce electricity with no fuel cost and very low emissions, and many host landowners and communities earn lease payments or ownership income.
Wind's main challenge is variability: turbines produce only when the wind blows, and output can change hour by hour. Turbines also raise local concerns about landscape, noise and wildlife, which careful siting and consultation aim to address. Pairing wind with flexible resources such as hydro, storage and interconnections helps manage its ups and downs.
Both hydro and wind show how the best renewable source depends on geography. Provinces with large rivers and the right terrain have built hydro for generations, while windy regions such as southern Alberta and parts of Atlantic Canada and Quebec have attracted major wind development. Understanding these local resources helps explain why each province's energy mix looks so different.
Solar power uses photovoltaic panels to turn sunlight into electricity, from small rooftop systems to large solar farms. Solar is still a small share of Canada's electricity but is growing, especially in Alberta, which has some of the country's best sunshine. Solar produces most in the summer and middle of the day, so it complements other sources rather than replacing them alone.
Bioenergy comes from organic materials such as forestry residues, agricultural waste and landfill gas. Canada's forest industry uses wood waste to generate heat and power, and renewable natural gas can be captured from landfills, farms and wastewater. Bioenergy can be dispatchable, but whether it is truly low-carbon depends on the source and how it is managed, so sustainability matters.
Geothermal energy uses heat from within the earth. It is useful to distinguish two kinds. Ground-source heat pumps, covered in our heat pump course, use the shallow ground's steady temperature to heat and cool buildings and are already used across Canada. Deep geothermal taps much hotter rock or fluids deep underground to produce heat or electricity.
Canada does not yet have large-scale geothermal power generation, but early-stage deep geothermal projects are under development in places such as Saskatchewan and Alberta, sometimes using skills and equipment from the oil and gas industry. Geothermal's appeal is that it can provide steady output around the clock.
Ocean energy includes tidal, wave and other technologies that capture the motion of the sea. Canada has a remarkable resource in the Bay of Fundy, between Nova Scotia and New Brunswick, home to the highest tides in the world. The bay has hosted tidal energy testing for years, but harsh conditions and high costs have made commercial development difficult. Ocean energy remains promising but early-stage in Canada.
Nuclear power is not renewable, because it uses uranium fuel, but it produces electricity with very low greenhouse gas emissions and runs steadily around the clock. Canada developed its own reactor technology, known as CANDU, and is a major uranium producer. Ontario gets around half of its electricity from nuclear plants, and New Brunswick also operates a nuclear station.
Nuclear has clear trade-offs: high construction costs and long build times, the need to safely manage radioactive waste over very long periods, and public concerns about safety. Supporters point to its reliability, small land footprint and role in keeping Ontario's grid low-emission.
Canada is also pursuing small modular reactors, or SMRs, which are smaller designs intended to be built more quickly and in more locations. Ontario has begun building an SMR at the Darlington site, and other provinces, including Saskatchewan, have expressed interest. Whether SMRs can deliver on cost and timelines is still being tested.
Whether nuclear should expand is a genuine public debate in Canada, with thoughtful people on different sides. Questions include cost compared with other options, long-term waste storage, community consent, and how quickly new plants can be built. Understanding these trade-offs helps you weigh announcements and arguments about new nuclear projects in your own province.
The electricity grid must balance supply and demand every second. Grid operators forecast demand, schedule generation and keep reserves ready for unexpected changes. Canadian demand peaks differ by province: many provinces peak on cold winter evenings, when heating loads are high, while others see high summer peaks from air conditioning.
Variable renewables like wind and solar add a new challenge, since their output depends on the weather. Grid operators manage this with a toolkit: flexible generation such as reservoir hydro and natural gas plants, energy storage such as large batteries, better weather forecasting, and demand response, where customers are paid or encouraged to shift use away from peak times.
Interconnections between provinces and with the United States also help, allowing regions to share power and smooth out local variations. Canada exports electricity to the United States, mainly hydro from provinces like Quebec, Manitoba and British Columbia. However, east-west connections between Canadian provinces are relatively limited, and building more transmission is costly and slow.
Households are becoming part of the grid too. Smart thermostats, EV charging schedules, home batteries and rooftop solar can all help or strain the grid depending on how they are managed. Time-of-use rates and utility programs are designed to encourage helpful behaviour.
Extreme weather is a growing concern for grid reliability. Ice storms, windstorms, wildfires and heat waves can damage lines and spike demand at the same time. Utilities are investing in stronger poles and lines, vegetation management, better forecasting and faster restoration, while local solutions such as home batteries and community microgrids can help critical services keep running during outages.
Net-zero emissions means that any greenhouse gases still emitted are balanced by an equal amount removed from the atmosphere. Canada's goal of net-zero emissions by 2050 is written into federal law under the Canadian Net-Zero Emissions Accountability Act, passed in 2021, which also requires interim targets and progress reports.
For electricity, the federal Clean Electricity Regulations were finalized in late 2024 with a goal of a net-zero grid by 2050, after earlier drafts aimed for 2035. In 2026, the federal government released a national electricity strategy aimed at roughly doubling the grid by 2050 and proposed giving provinces more flexibility, including a larger role for natural gas. Some details were still being worked out with provinces in 2026, so expect further changes.
Carbon pricing has also shifted. The federal consumer carbon charge on fuels such as gasoline and natural gas was set to zero in April 2025, while carbon pricing for large industrial emitters continues. Federal rules for vehicles have also been under review. Policies like these can change with governments and economic conditions, which is why it is useful to understand the underlying technologies and trade-offs, not just the current rules.
Reaching net-zero will rely on many pieces together: a cleaner and larger electricity grid, electrification of transport and buildings, energy efficiency, lower-emission industry, and methods to remove carbon from the atmosphere.
Because policies shift, it is worth checking official federal and provincial sources for the latest status before making decisions that depend on a particular rule or incentive. For home upgrades, the Sundamentals rebate finder is updated to reflect programs that are currently open where you live.
Because each province starts from a different place, the path to a cleaner energy system looks different across Canada. Hydro-rich provinces focus on meeting growing demand and electrifying heating and transport. Ontario focuses on nuclear refurbishment and new nuclear alongside renewables and storage. Alberta and Saskatchewan are working to replace coal and add wind, solar and other low-emission options while managing reliability and cost. Atlantic Canada is expanding renewables and interconnections.
Indigenous communities are central to Canada's energy future. Many renewable projects are now owned or co-owned by First Nations, Inuit and Métis communities, and many remote communities that rely on diesel generators are adding solar, wind and storage to cut costs and emissions.
Households also have a role. Making your home more efficient, choosing an EV or heat pump when it makes sense, adding solar or a battery, shifting electricity use to off-peak times and participating in utility programs all contribute. Learning about your own province's electricity mix helps you understand which choices have the biggest impact where you live.
Finally, stay informed and engaged. Energy decisions shape your bills, your community and the climate. Asking good questions, comparing claims against reliable sources and taking part in local consultations are all part of being an energy-literate Canadian.
Community energy is growing too. Energy co-operatives, municipal programs and community solar or wind projects let people invest in or benefit from local renewable energy even if they rent or cannot install equipment at home. Ask your municipality or local utility whether such options exist near you.
Next step: Explore your province →
