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Ontario’s proposed nuclear plants could cost nearly $300-billion, study finds

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  • chuckChuck
    Senior Member
    • Dec 2006
    • 13066

    #11
    Canadian solar and wind project costs plummet

    Renewables are now most affordable new generation, as costs are halved







    January 28, 2026
    Article


    Wind energy in Alberta
    Photo credit: David Dodge



    It’s a happy coincidence of timing: we need a lot more electricity generation, and fast — and we’ve also experienced more than a decade of price reductions in renewable energy.
    A look at projects built in Canada shows a clear trend: contracted energy costs from wind and solar have been cut in half over the last 10 years, the period of time during which most projects were built in Canada.
    These wind and solar projects provide concrete, local examples of how costs are coming down as the technology improves and the market matures. Each point in the graph below reflects one or more real projects from signed deals. Altogether, the deals come from procurements in seven provinces across Canada.




    The utilities that operate the electricity systems in most provinces held competitive procurement processes to secure contracts. This gave the market the certainty to grow and build projects that deliver low-cost energy. To top off all that good news, analysts expect that the cost of renewables will continue to drop further by between 25 to 50 per cent over the next decade ([url]https://about.bnef.com/insights/clean-energy/global-cost-of-renewables-to-continue-falling-in-2025-as-china-extends-manufacturing-lead-bloombergnef/[/url]).
    In contrast, the cost of new nuclear projects, including refurbishments, has risen over the same period, so that the energy delivered by nuclear projects contracted over the last couple of years will likely be two to three times the cost of energy from renewables projects contracted in that year. We estimate the Pickering nuclear refurbishment will deliver power at $266 per megawatt-hour (MWh), and the Darlington small modular reactor project will be $152 per MWh; compare that to wind and solar procured in Saskatchewan and B.C. at $64-110 per MWh.
    It's worth noting, too, that the energy from renewables will come along sooner — in the next three to five years — rather than 10 years or more for nuclear projects. It’s important to move quickly as forecasts across the country show a rapid and substantial increase in the need for additional electricity. For example, Ontario expects electricity demand will grow by 75 per cent by 2050 ([url]https://www.ontario.ca/page/energy-generations[/url]), while Alberta expects a 26 to 44 per cent increase ([url]https://www.poweradvisoryllc.com/reports/may-2024-alberta-electricity-newsletter-2024-aeso-long-term-outlook[/url]) between 2024 and 2043.
    Why the timing of the renewable energy price drops matters

    A decade ago, wind and solar electricity generation were more expensive than other types of generation. But since then, prices have dropped steadily. Now, they’re the lowest-cost form of new electricity generation, according to the grid operators in Alberta ([url]https://www.aeso.ca/assets/Uploads/grid/lto/2024/2024-LTO-Implications-Insights-and-Outcomes.pdf[/url]) and Ontario ([url]https://www.ieso.ca/-/media/Files/IESO/Document-Library/planning-forecasts/apo/Mar2024/Resource-Costs-and-Trends.pdf[/url]), as well as global analysts ([url]https://www.lazard.com/media/uounhon4/lazards-lcoeplus-june-2025.pdf[/url]).
    The timing of this price drop could not have come at a better time. Electricity demand is surging ([url]https://transitionaccelerator.ca/reports/forecasting-canadas-electricity-future/[/url]) to accommodate the electrification of vehicles, home heating and industrial processes, so provinces across Canada are making crucial decisions about how to add more electricity to their systems. Getting more affordable electricity generation onto the grid — fast — underpins the competitiveness of the economy.
    How electricity users benefit when renewable energy is added to the grid

    Even if solar panels or wind turbines are not on your shopping list, your budget can still benefit from a growing clean energy sector. That’s because when the most affordable forms of new electricity generation — namely solar, wind and battery storage — are added to the electrical grid in your province or territory, they help keep electricity prices low for everybody.
    The biggest cost involved in the life of a wind or solar farm is the upfront capital cost to build the infrastructure. Once they’re built, they run on free fuel (wind and sunshine), unlike natural gas or nuclear plants.
    There are effective ways of making sure this low-cost energy is still available when the sun sets and the wind isn’t blowing. Ontario figured this out when it contracted 1,885 megawatts (MW) of battery storage capacity in its first long-term procurement. Extra wind and solar power is stashed away during peak energy-producing hours and is discharged to the grid when it’s most needed. The province is also harnessing energy savings by working with electricity consumers to reduce demand when necessary, and it’s building transmission lines to move energy from high production to high consumption areas.
    The overall cost reductions of renewable energy over time and the continued low operating costs are the reasons why 93 per cent of new electricity infrastructure ([url]https://www.eia.gov/todayinenergy/detail.php?id=64586[/url]) built in the United States last year was solar, wind and batteries. It’s also why renewable energy overtook coal as the largest source of electricity worldwide in 2025.
    Where clean energy is being added to the Canadian grid now

    Canadian provinces, having recognized the value of adding more renewables to their electricity mix, are scaling up calls for wind and solar project proposals in 2026. The fact that they’re using competitive auctions to secure the additional electricity means they’re getting the best value for their dollar. Here’s what we’ll be watching this year:
    • Ontario: Over four years, the province is running a technology-agnostic competitive bid process for up to 7,500 MW of new energy and capacity. It’s open to wind and solar developers, as well as energy storage projects and natural gas plants. The first round of results ([url]https://www.ieso.ca/Sector-Participants/Resource-Acquisition-and-Contracts/Long-Term-2-RFP[/url]) are expected in April.
    • Quebec:Hydro-Québec announced plans last year to develop 10,000 MW of wind and 3,000 MW of solar energy by 2035. The first call for tenders ([url]https://www.hydroquebec.com/achats-electricite-quebec/appels-propositions/2025-01.html[/url]) for 300 MW of solar energy is opening in April.
    • British Columbia: BC Hydro launched a bid process in 2025 to acquire up to 5,000 gigawatt hours per year of new clean or renewable energy projects. For comparison, this is roughly equivalent to either 1,600 MW of wind or 2,500 MW of solar. BC Hydro got 14 proposals totalling more than 9,100 gigawatt hours per year, ([url]https://news.gov.bc.ca/releases/2026ECS0003-000056[/url]) nearly double the targeted amount, and final results are expected in the coming months.
    • Manitoba: Manitoba Hydro is procuring 600 MW of wind power this year, with the official request for proposals ([url]https://www.hydro.mb.ca/corporate/call-for-wind-power/[/url]) coming out in March.
    • The territories do not have centralized renewable energy requests for proposals. They’re typically smaller community-oriented projects, funding programs, and utility procurements rather than large multihundred-MW auctions. Our recent report, Restoring the Flow ([url]https://www.pembina.org/pub/restoring-flow[/url]), explores the status of policies supporting Indigenous-led clean energy in remote communities.
    However, a couple of provinces are choosing to go a different direction with new energy needs and are missing out on the opportunities of low-cost renewable energy:
    • Alberta: Until recently, Alberta led the country in renewable energy deployment. However, after a series of major policy changes, the market is stalling, as our report from last year highlights ([url]https://www.pembina.org/pub/down-not-out[/url]).
    • Saskatchewan: The Government of Saskatchewan decided in the middle of last year to extend its coal fleet to power its grid until nuclear plants come online sometime later in the century. Although it is also procuring some renewable energy, we believe the decision to extend coal is going in the wrong direction ([url]https://www.pembina.org/blog/saskatchewan-going-wrong-direction-coal[/url]).
    The provincial and territorial governments with the foresight to take advantage of the low-cost electricity available from wind and solar can do so by planning their systems around a modernized grid. This means harnessing the latest technology — including interprovincial interties, demand-side measures and long-duration energy storage — to manage their energy in a way that delivers affordable and reliable electricity as demand grows.
    2026 will be another exciting year for clean energy in Canada as federal, provincial and territorial governments adjust to the new reality of low-cost renewable energy and make crucial decisions about the future of our energy supply.
    HOW WE DID IT: Calculating contract renewable and nuclear energy

    Comment

    • chuckChuck
      Senior Member
      • Dec 2006
      • 13066

      #12
      Quebec, Ontario, Manitoba, Nova Scotia are using competitive auctions instead of governments like Saskatchewan and Alberta picking winners and losers. Its politics instead of economics driving a lot of decisions in the petro provinces dominated by fossil fuels! They don't like cheaper competition!

      Get ready to pay a fortune in Saskatchewan! Alberta has the highest electricity prices already. I will stick with solar and add battery storage to reduce the impact of Scott Moe's and Jeremy Harrison's stupid decisions. Our solar electricity costs are already low at 8 cents per kwh.



      Where clean energy is being added to the Canadian grid now



      Canadian provinces, having recognized the value of adding more renewables to their electricity mix, are scaling up calls for wind and solar project proposals in 2026. The fact that they’re using competitive auctions to secure the additional electricity means they’re getting the best value for their dollar. Here’s what we’ll be watching this year:
      • Ontario: Over four years, the province is running a technology-agnostic competitive bid process for up to 7,500 MW of new energy and capacity. It’s open to wind and solar developers, as well as energy storage projects and natural gas plants. The first round of results ([url]https://www.ieso.ca/Sector-Participants/Resource-Acquisition-and-Contracts/Long-Term-2-RFP[/url]) are expected in April.
      • Quebec:Hydro-Québec announced plans last year to develop 10,000 MW of wind and 3,000 MW of solar energy by 2035. The first call for tenders ([url]https://www.hydroquebec.com/achats-electricite-quebec/appels-propositions/2025-01.html[/url]) for 300 MW of solar energy is opening in April.
      • British Columbia: BC Hydro launched a bid process in 2025 to acquire up to 5,000 gigawatt hours per year of new clean or renewable energy projects. For comparison, this is roughly equivalent to either 1,600 MW of wind or 2,500 MW of solar. BC Hydro got 14 proposals totalling more than 9,100 gigawatt hours per year, ([url]https://news.gov.bc.ca/releases/2026ECS0003-000056[/url]) nearly double the targeted amount, and final results are expected in the coming months.
      • Manitoba: Manitoba Hydro is procuring 600 MW of wind power this year, with the official request for proposals ([url]https://www.hydro.mb.ca/corporate/call-for-wind-power/[/url]) coming out in March.
      • The territories do not have centralized renewable energy requests for proposals. They’re typically smaller community-oriented projects, funding programs, and utility procurements rather than large multihundred-MW auctions. Our recent report, Restoring the Flow ([url]https://www.pembina.org/pub/restoring-flow[/url]), explores the status of policies supporting Indigenous-led clean energy in remote communities.

      However, a couple of provinces are choosing to go a different direction with new energy needs and are missing out on the opportunities of low-cost renewable energy:
      • Alberta: Until recently, Alberta led the country in renewable energy deployment. However, after a series of major policy changes, the market is stalling, as our report from last year highlights ([url]https://www.pembina.org/pub/down-not-out[/url]).
      • Saskatchewan: The Government of Saskatchewan decided in the middle of last year to extend its coal fleet to power its grid until nuclear plants come online sometime later in the century. Although it is also procuring some renewable energy, we believe the decision to extend coal is going in the wrong direction ([url]https://www.pembina.org/blog/saskatchewan-going-wrong-direction-coal[/url]).

      The provincial and territorial governments with the foresight to take advantage of the low-cost electricity available from wind and solar can do so by planning their systems around a modernized grid. This means harnessing the latest technology — including interprovincial interties, demand-side measures and long-duration energy storage — to manage their energy in a way that delivers affordable and reliable electricity as demand grows.

      Comment

      • shtferbrains
        Senior Member
        • Jun 2017
        • 5297

        #13
        BC is using surplus solar from California that comes up on the interconnect.
        They use it during the day when it has little or sometimes negative value because California just keeps building more.
        BC has a lot of hydro mostly built back in Waccy Bennett days when you could put dams in in very short time lines.
        They shut tubines down during the day and take the surplus solar to cover the power shortage they have managed to develop in the last few yrs.
        Fortunately in this case one governments boondoggle can cover for anothers incompetence?

        Comment

        • chuckChuck
          Senior Member
          • Dec 2006
          • 13066

          #14
          Whats the downside here? Importing low cost surplus power makes sense.

          Sounds like there is a lot of value of interconnects with other states and provinces. Saving hydro for when you need it makes sense because BC is facing more droughts and lower water levels.

          Australia is using its roof top solar to deliver 3 hours of free electricity to some consumers to shift demand to periods of oversupply. Again where is the downside?



          Comment

          • furrowtickler
            Senior Member
            • Dec 2004
            • 22207

            #15
            Great for areas that don’t experience 5 months of winter

            Comment

            • shtferbrains
              Senior Member
              • Jun 2017
              • 5297

              #16
              Originally posted by chuckChuck View Post
              Whats the downside here? Importing low cost surplus power makes sense.

              Sounds like there is a lot of value of interconnects with other states and provinces. Saving hydro for when you need it makes sense because BC is facing more droughts and lower water levels.
              There is no downside in that plan.
              Double down and invest is reliable, dispatchable, sources like Nuclear, gas, hydro, and coal that we have. Use the interconnect to sell to the SW USA at premium prices when they need it to cover for unreliable sources and take their surplus solar at discounts or free.
              Government policy there makes this opportunity available to us.
              Government policy here decides which side we are on.
              Why squander money on solar when we can get it for free?



              Comment

              • furrowtickler
                Senior Member
                • Dec 2004
                • 22207

                #17
                Originally posted by shtferbrains View Post

                There is no downside in that plan.
                Double down and invest is reliable, dispatchable, sources like Nuclear, gas, hydro, and coal that we have. Use the interconnect to sell to the SW USA at premium prices when they need it to cover for unreliable sources and take their surplus solar at discounts or free.
                Government policy there makes this opportunity available to us.
                Government policy here decides which side we are on.
                Why squander money on solar when we can get it for free?


                Sounds like a brilliant and common sense plan

                Comment

                • blackpowder
                  Senior Member
                  • Feb 2010
                  • 9368

                  #18
                  Although a different jurisdiction completely, a glance at China's stats interesting. What are they building? What's the source breakdown? They certainly haven't shut anything in. I think a narrow focus on our part is a mistake. Typical dithering a bigger one. These decisions decades overdue.
                  Nuclear expensive build.
                  Coal at least as expensive to restart.
                  Gas won't last forever and we pay world price
                  Only so many rivers for hydro.
                  Renewable can't yet be the sole source in any forseeable future.
                  Something needs fast tracking and it can't be an only renewable answer.


                  Comment

                  • blackpowder
                    Senior Member
                    • Feb 2010
                    • 9368

                    #19
                    On a related note. Renewables require inverters to send off AC.
                    Where do you suppose they are made?

                    Yes, a recent study shows that not only Chinese vehicles, but some dockyard cranes and most renewable plants may have shutdown access by the manufacturer.
                    So while we bicker and delay incessantly, we've sold our safety, security and sovereignty.
                    Sad how virtue signalling makes you blind.
                    With no suspenders, elbows up - pants down.
                    Last edited by blackpowder; Jun 28, 2026, 16:54.

                    Comment

                    • chuckChuck
                      Senior Member
                      • Dec 2006
                      • 13066

                      #20
                      Well they aren't making nuclear components or enriching uranium in Canada either!

                      The most important thing you need to know is the wind and the sun are massive sources of energy that will never run out. They can't be monopolized. The fuel is free. Their energy can be stored in EVs and stored in many other ways.

                      And best of all the costs of renewable wind and solar are going down while almost every other sources of energy is going up.

                      "We estimate the Pickering nuclear refurbishment will deliver power at $266 per megawatt-hour (MWh), and the Darlington small modular reactor project will be $152 per MWh; compare that to wind and solar procured in Saskatchewan and B.C. at $64-110 per MWh."

                      Open the the bidding up to renewables, the cost will come in well below any other source and you can add a lot of capacity and back it up with a variety of base load options and be farther ahead. Just ask Ontario, Australia, Nova Scotia, Texas, North Dakota, and many other countries that have a lot more new renewable generation or are planning more.

                      And winter production is lower but its not zero and it can be backed up with all of the above options. The wind blows a lot during winter. Ontario peak demand occurs in summer which matches peak solar.

                      Its not one or either source.

                      Comment

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